Merge branch 'update-libnvidia-container' into 'master'

Update libnvidia-container to latest for release

See merge request nvidia/container-toolkit/container-toolkit!83

.nvidia-ci.yml

@@ -66,7 +66,7 @@ variables:
       export SSA_TOKEN=$(curl --request POST --header "Authorization: Basic $AuthHeader" --header "Content-Type: application/x-www-form-urlencoded" ${SSA_ISSUER_URL} | jq ".access_token" |  tr -d '"')
     - if [ -z "$SSA_TOKEN" ]; then exit 1; else echo "SSA_TOKEN set!"; fi
   script:
-    - pulse-cli -n $NSPECT_ID --pss $PSS_URL --ssa $SSA_TOKEN scan -i $IMAGE_ARCHIVE -p $CONTAINER_POLICY -o
+    - pulse-cli -n $NSPECT_ID --ssa $SSA_TOKEN scan -i $IMAGE_ARCHIVE -p $CONTAINER_POLICY -o
   artifacts:
     when: always
     expire_in: 1 week

Makefile

@@ -17,8 +17,8 @@ MKDIR    ?= mkdir
 DIST_DIR ?= $(CURDIR)/dist
 
 LIB_NAME := nvidia-container-toolkit
-LIB_VERSION := 1.6.0
-LIB_TAG ?= rc.3
+LIB_VERSION := 1.7.0
+LIB_TAG := rc.1
 
 GOLANG_VERSION := 1.16.3
 MODULE := github.com/NVIDIA/nvidia-container-toolkit

build/container/Makefile

@@ -20,8 +20,8 @@ DIST_DIR ?= $(CURDIR)/dist
 
 # TODO: These should be defined ONCE and currently duplicate the version in the
 # toolkit makefile.
-LIB_VERSION := 1.6.0
-LIB_TAG := rc.3
+LIB_VERSION := 1.7.0
+LIB_TAG := rc.1
 
 VERSION ?= $(LIB_VERSION)$(if $(LIB_TAG),-$(LIB_TAG))
 

cmd/nvidia-container-toolkit/capabilities.go

@@ -2,6 +2,15 @@ package main
 
 import (
 	"log"
+	"strings"
+)
+
+const (
+	allDriverCapabilities     = DriverCapabilities("compute,compat32,graphics,utility,video,display,ngx")
+	defaultDriverCapabilities = DriverCapabilities("utility,compute")
+
+	none = DriverCapabilities("")
+	all  = DriverCapabilities("all")
 )
 
 func capabilityToCLI(cap string) string {
@@ -25,3 +34,50 @@ func capabilityToCLI(cap string) string {
 	}
 	return ""
 }
+
+// DriverCapabilities is used to process the NVIDIA_DRIVER_CAPABILITIES environment
+// variable. Operations include default values, filtering, and handling meta values such as "all"
+type DriverCapabilities string
+
+// Intersection returns intersection between two sets of capabilities.
+func (d DriverCapabilities) Intersection(capabilities DriverCapabilities) DriverCapabilities {
+	if capabilities == all {
+		return d
+	}
+	if d == all {
+		return capabilities
+	}
+
+	lookup := make(map[string]bool)
+	for _, c := range d.list() {
+		lookup[c] = true
+	}
+	var found []string
+	for _, c := range capabilities.list() {
+		if lookup[c] {
+			found = append(found, c)
+		}
+	}
+
+	intersection := DriverCapabilities(strings.Join(found, ","))
+	return intersection
+}
+
+// String returns the string representation of the driver capabilities
+func (d DriverCapabilities) String() string {
+	return string(d)
+}
+
+// list returns the driver capabilities as a list
+func (d DriverCapabilities) list() []string {
+	var caps []string
+	for _, c := range strings.Split(string(d), ",") {
+		trimmed := strings.TrimSpace(c)
+		if len(trimmed) == 0 {
+			continue
+		}
+		caps = append(caps, trimmed)
+	}
+
+	return caps
+}

cmd/nvidia-container-toolkit/capabilities_test.go

@@ -0,0 +1,134 @@
+/**
+# Copyright (c) 2021, NVIDIA CORPORATION.  All rights reserved.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+**/
+
+package main
+
+import (
+	"fmt"
+	"testing"
+
+	"github.com/stretchr/testify/require"
+)
+
+func TestDriverCapabilitiesIntersection(t *testing.T) {
+	testCases := []struct {
+		capabilities          DriverCapabilities
+		supportedCapabilities DriverCapabilities
+		expectedIntersection  DriverCapabilities
+	}{
+		{
+			capabilities:          none,
+			supportedCapabilities: none,
+			expectedIntersection:  none,
+		},
+		{
+			capabilities:          all,
+			supportedCapabilities: none,
+			expectedIntersection:  none,
+		},
+		{
+			capabilities:          all,
+			supportedCapabilities: allDriverCapabilities,
+			expectedIntersection:  allDriverCapabilities,
+		},
+		{
+			capabilities:          allDriverCapabilities,
+			supportedCapabilities: all,
+			expectedIntersection:  allDriverCapabilities,
+		},
+		{
+			capabilities:          none,
+			supportedCapabilities: all,
+			expectedIntersection:  none,
+		},
+		{
+			capabilities:          none,
+			supportedCapabilities: DriverCapabilities("cap1"),
+			expectedIntersection:  none,
+		},
+		{
+			capabilities:          DriverCapabilities("cap0,cap1"),
+			supportedCapabilities: DriverCapabilities("cap1,cap0"),
+			expectedIntersection:  DriverCapabilities("cap0,cap1"),
+		},
+		{
+			capabilities:          defaultDriverCapabilities,
+			supportedCapabilities: allDriverCapabilities,
+			expectedIntersection:  defaultDriverCapabilities,
+		},
+		{
+			capabilities:          DriverCapabilities("compute,compat32,graphics,utility,video,display"),
+			supportedCapabilities: DriverCapabilities("compute,compat32,graphics,utility,video,display,ngx"),
+			expectedIntersection:  DriverCapabilities("compute,compat32,graphics,utility,video,display"),
+		},
+		{
+			capabilities:          DriverCapabilities("cap1"),
+			supportedCapabilities: none,
+			expectedIntersection:  none,
+		},
+		{
+			capabilities:          DriverCapabilities("compute,compat32,graphics,utility,video,display,ngx"),
+			supportedCapabilities: DriverCapabilities("compute,compat32,graphics,utility,video,display"),
+			expectedIntersection:  DriverCapabilities("compute,compat32,graphics,utility,video,display"),
+		},
+	}
+
+	for i, tc := range testCases {
+		t.Run(fmt.Sprintf("test case %d", i), func(t *testing.T) {
+			intersection := tc.supportedCapabilities.Intersection(tc.capabilities)
+			require.EqualValues(t, tc.expectedIntersection, intersection)
+		})
+	}
+}
+
+func TestDriverCapabilitiesList(t *testing.T) {
+	testCases := []struct {
+		capabilities DriverCapabilities
+		expected     []string
+	}{
+		{
+			capabilities: DriverCapabilities(""),
+		},
+		{
+			capabilities: DriverCapabilities("  "),
+		},
+		{
+			capabilities: DriverCapabilities(","),
+		},
+		{
+			capabilities: DriverCapabilities(",cap"),
+			expected:     []string{"cap"},
+		},
+		{
+			capabilities: DriverCapabilities("cap,"),
+			expected:     []string{"cap"},
+		},
+		{
+			capabilities: DriverCapabilities("cap0,,cap1"),
+			expected:     []string{"cap0", "cap1"},
+		},
+		{
+			capabilities: DriverCapabilities("cap1,cap0,cap3"),
+			expected:     []string{"cap1", "cap0", "cap3"},
+		},
+	}
+
+	for i, tc := range testCases {
+		t.Run(fmt.Sprintf("test case %d", i), func(t *testing.T) {
+			require.EqualValues(t, tc.expected, tc.capabilities.list())
+		})
+	}
+}

cmd/nvidia-container-toolkit/container_config.go

@@ -26,11 +26,6 @@ const (
 	envNVDriverCapabilities = "NVIDIA_DRIVER_CAPABILITIES"
 )
 
-const (
-	allDriverCapabilities     = "compute,compat32,graphics,utility,video,display,ngx"
-	defaultDriverCapabilities = "utility,compute"
-)
-
 const (
 	capSysAdmin = "CAP_SYS_ADMIN"
 )
@@ -316,33 +311,27 @@ func getMigMonitorDevices(env map[string]string) *string {
 	return nil
 }
 
-func getDriverCapabilities(env map[string]string, legacyImage bool) *string {
-	// Grab a reference to the capabilities from the envvar
-	// if it actually exists in the environment.
-	var capabilities *string
-	if caps, ok := env[envNVDriverCapabilities]; ok {
-		capabilities = &caps
+func getDriverCapabilities(env map[string]string, supportedDriverCapabilities DriverCapabilities, legacyImage bool) DriverCapabilities {
+	// We use the default driver capabilities by default. This is filtered to only include the
+	// supported capabilities
+	capabilities := supportedDriverCapabilities.Intersection(defaultDriverCapabilities)
+
+	capsEnv, capsEnvSpecified := env[envNVDriverCapabilities]
+
+	if !capsEnvSpecified && legacyImage {
+		// Environment variable unset with legacy image: set all capabilities.
+		return supportedDriverCapabilities
 	}
 
-	// Environment variable unset with legacy image: set all capabilities.
-	if capabilities == nil && legacyImage {
-		allCaps := allDriverCapabilities
-		return &allCaps
+	if capsEnvSpecified && len(capsEnv) > 0 {
+		// If the envvironment variable is specified and is non-empty, use the capabilities value
+		envCapabilities := DriverCapabilities(capsEnv)
+		capabilities = supportedDriverCapabilities.Intersection(envCapabilities)
+		if envCapabilities != all && capabilities != envCapabilities {
+			log.Panicln(fmt.Errorf("unsupported capabilities found in '%v' (allowed '%v')", envCapabilities, capabilities))
+		}
 	}
 
-	// Environment variable unset or set but empty: set default capabilities.
-	if capabilities == nil || len(*capabilities) == 0 {
-		defaultCaps := defaultDriverCapabilities
-		return &defaultCaps
-	}
-
-	// Environment variable set to "all": set all capabilities.
-	if *capabilities == "all" {
-		allCaps := allDriverCapabilities
-		return &allCaps
-	}
-
-	// Any other value
 	return capabilities
 }
 
@@ -389,10 +378,7 @@ func getNvidiaConfig(hookConfig *HookConfig, env map[string]string, mounts []Mou
 		log.Panicln("cannot set MIG_MONITOR_DEVICES in non privileged container")
 	}
 
-	var driverCapabilities string
-	if c := getDriverCapabilities(env, legacyImage); c != nil {
-		driverCapabilities = *c
-	}
+	driverCapabilities := getDriverCapabilities(env, hookConfig.SupportedDriverCapabilities, legacyImage).String()
 
 	requirements := getRequirements(env, legacyImage)
 

cmd/nvidia-container-toolkit/container_config_test.go

@@ -12,6 +12,7 @@ func TestGetNvidiaConfig(t *testing.T) {
 		description    string
 		env            map[string]string
 		privileged     bool
+		hookConfig     *HookConfig
 		expectedConfig *nvidiaConfig
 		expectedPanic  bool
 	}{
@@ -35,7 +36,7 @@ func TestGetNvidiaConfig(t *testing.T) {
 			privileged: false,
 			expectedConfig: &nvidiaConfig{
 				Devices:            "all",
-				DriverCapabilities: allDriverCapabilities,
+				DriverCapabilities: allDriverCapabilities.String(),
 				Requirements:       []string{"cuda>=9.0"},
 				DisableRequire:     false,
 			},
@@ -49,7 +50,7 @@ func TestGetNvidiaConfig(t *testing.T) {
 			privileged: false,
 			expectedConfig: &nvidiaConfig{
 				Devices:            "all",
-				DriverCapabilities: allDriverCapabilities,
+				DriverCapabilities: allDriverCapabilities.String(),
 				Requirements:       []string{"cuda>=9.0"},
 				DisableRequire:     false,
 			},
@@ -81,7 +82,7 @@ func TestGetNvidiaConfig(t *testing.T) {
 			privileged: false,
 			expectedConfig: &nvidiaConfig{
 				Devices:            "",
-				DriverCapabilities: allDriverCapabilities,
+				DriverCapabilities: allDriverCapabilities.String(),
 				Requirements:       []string{"cuda>=9.0"},
 				DisableRequire:     false,
 			},
@@ -95,7 +96,7 @@ func TestGetNvidiaConfig(t *testing.T) {
 			privileged: false,
 			expectedConfig: &nvidiaConfig{
 				Devices:            "gpu0,gpu1",
-				DriverCapabilities: allDriverCapabilities,
+				DriverCapabilities: allDriverCapabilities.String(),
 				Requirements:       []string{"cuda>=9.0"},
 				DisableRequire:     false,
 			},
@@ -110,7 +111,7 @@ func TestGetNvidiaConfig(t *testing.T) {
 			privileged: false,
 			expectedConfig: &nvidiaConfig{
 				Devices:            "gpu0,gpu1",
-				DriverCapabilities: defaultDriverCapabilities,
+				DriverCapabilities: defaultDriverCapabilities.String(),
 				Requirements:       []string{"cuda>=9.0"},
 				DisableRequire:     false,
 			},
@@ -125,7 +126,7 @@ func TestGetNvidiaConfig(t *testing.T) {
 			privileged: false,
 			expectedConfig: &nvidiaConfig{
 				Devices:            "gpu0,gpu1",
-				DriverCapabilities: allDriverCapabilities,
+				DriverCapabilities: allDriverCapabilities.String(),
 				Requirements:       []string{"cuda>=9.0"},
 				DisableRequire:     false,
 			},
@@ -135,12 +136,12 @@ func TestGetNvidiaConfig(t *testing.T) {
 			env: map[string]string{
 				envCUDAVersion:          "9.0",
 				envNVVisibleDevices:     "gpu0,gpu1",
-				envNVDriverCapabilities: "cap0,cap1",
+				envNVDriverCapabilities: "video,display",
 			},
 			privileged: false,
 			expectedConfig: &nvidiaConfig{
 				Devices:            "gpu0,gpu1",
-				DriverCapabilities: "cap0,cap1",
+				DriverCapabilities: "video,display",
 				Requirements:       []string{"cuda>=9.0"},
 				DisableRequire:     false,
 			},
@@ -150,14 +151,14 @@ func TestGetNvidiaConfig(t *testing.T) {
 			env: map[string]string{
 				envCUDAVersion:              "9.0",
 				envNVVisibleDevices:         "gpu0,gpu1",
-				envNVDriverCapabilities:     "cap0,cap1",
+				envNVDriverCapabilities:     "video,display",
 				envNVRequirePrefix + "REQ0": "req0=true",
 				envNVRequirePrefix + "REQ1": "req1=false",
 			},
 			privileged: false,
 			expectedConfig: &nvidiaConfig{
 				Devices:            "gpu0,gpu1",
-				DriverCapabilities: "cap0,cap1",
+				DriverCapabilities: "video,display",
 				Requirements:       []string{"cuda>=9.0", "req0=true", "req1=false"},
 				DisableRequire:     false,
 			},
@@ -167,7 +168,7 @@ func TestGetNvidiaConfig(t *testing.T) {
 			env: map[string]string{
 				envCUDAVersion:              "9.0",
 				envNVVisibleDevices:         "gpu0,gpu1",
-				envNVDriverCapabilities:     "cap0,cap1",
+				envNVDriverCapabilities:     "video,display",
 				envNVRequirePrefix + "REQ0": "req0=true",
 				envNVRequirePrefix + "REQ1": "req1=false",
 				envNVDisableRequire:         "true",
@@ -175,7 +176,7 @@ func TestGetNvidiaConfig(t *testing.T) {
 			privileged: false,
 			expectedConfig: &nvidiaConfig{
 				Devices:            "gpu0,gpu1",
-				DriverCapabilities: "cap0,cap1",
+				DriverCapabilities: "video,display",
 				Requirements:       []string{"cuda>=9.0", "req0=true", "req1=false"},
 				DisableRequire:     true,
 			},
@@ -206,7 +207,7 @@ func TestGetNvidiaConfig(t *testing.T) {
 			privileged: false,
 			expectedConfig: &nvidiaConfig{
 				Devices:            "all",
-				DriverCapabilities: defaultDriverCapabilities,
+				DriverCapabilities: defaultDriverCapabilities.String(),
 				Requirements:       []string{"cuda>=9.0"},
 				DisableRequire:     false,
 			},
@@ -238,7 +239,7 @@ func TestGetNvidiaConfig(t *testing.T) {
 			privileged: false,
 			expectedConfig: &nvidiaConfig{
 				Devices:            "",
-				DriverCapabilities: defaultDriverCapabilities,
+				DriverCapabilities: defaultDriverCapabilities.String(),
 				Requirements:       []string{"cuda>=9.0"},
 				DisableRequire:     false,
 			},
@@ -252,7 +253,7 @@ func TestGetNvidiaConfig(t *testing.T) {
 			privileged: false,
 			expectedConfig: &nvidiaConfig{
 				Devices:            "gpu0,gpu1",
-				DriverCapabilities: defaultDriverCapabilities,
+				DriverCapabilities: defaultDriverCapabilities.String(),
 				Requirements:       []string{"cuda>=9.0"},
 				DisableRequire:     false,
 			},
@@ -267,7 +268,7 @@ func TestGetNvidiaConfig(t *testing.T) {
 			privileged: false,
 			expectedConfig: &nvidiaConfig{
 				Devices:            "gpu0,gpu1",
-				DriverCapabilities: defaultDriverCapabilities,
+				DriverCapabilities: defaultDriverCapabilities.String(),
 				Requirements:       []string{"cuda>=9.0"},
 				DisableRequire:     false,
 			},
@@ -282,7 +283,7 @@ func TestGetNvidiaConfig(t *testing.T) {
 			privileged: false,
 			expectedConfig: &nvidiaConfig{
 				Devices:            "gpu0,gpu1",
-				DriverCapabilities: allDriverCapabilities,
+				DriverCapabilities: allDriverCapabilities.String(),
 				Requirements:       []string{"cuda>=9.0"},
 				DisableRequire:     false,
 			},
@@ -292,12 +293,12 @@ func TestGetNvidiaConfig(t *testing.T) {
 			env: map[string]string{
 				envNVRequireCUDA:        "cuda>=9.0",
 				envNVVisibleDevices:     "gpu0,gpu1",
-				envNVDriverCapabilities: "cap0,cap1",
+				envNVDriverCapabilities: "video,display",
 			},
 			privileged: false,
 			expectedConfig: &nvidiaConfig{
 				Devices:            "gpu0,gpu1",
-				DriverCapabilities: "cap0,cap1",
+				DriverCapabilities: "video,display",
 				Requirements:       []string{"cuda>=9.0"},
 				DisableRequire:     false,
 			},
@@ -307,14 +308,14 @@ func TestGetNvidiaConfig(t *testing.T) {
 			env: map[string]string{
 				envNVRequireCUDA:            "cuda>=9.0",
 				envNVVisibleDevices:         "gpu0,gpu1",
-				envNVDriverCapabilities:     "cap0,cap1",
+				envNVDriverCapabilities:     "video,display",
 				envNVRequirePrefix + "REQ0": "req0=true",
 				envNVRequirePrefix + "REQ1": "req1=false",
 			},
 			privileged: false,
 			expectedConfig: &nvidiaConfig{
 				Devices:            "gpu0,gpu1",
-				DriverCapabilities: "cap0,cap1",
+				DriverCapabilities: "video,display",
 				Requirements:       []string{"cuda>=9.0", "req0=true", "req1=false"},
 				DisableRequire:     false,
 			},
@@ -324,7 +325,7 @@ func TestGetNvidiaConfig(t *testing.T) {
 			env: map[string]string{
 				envNVRequireCUDA:            "cuda>=9.0",
 				envNVVisibleDevices:         "gpu0,gpu1",
-				envNVDriverCapabilities:     "cap0,cap1",
+				envNVDriverCapabilities:     "video,display",
 				envNVRequirePrefix + "REQ0": "req0=true",
 				envNVRequirePrefix + "REQ1": "req1=false",
 				envNVDisableRequire:         "true",
@@ -332,7 +333,7 @@ func TestGetNvidiaConfig(t *testing.T) {
 			privileged: false,
 			expectedConfig: &nvidiaConfig{
 				Devices:            "gpu0,gpu1",
-				DriverCapabilities: "cap0,cap1",
+				DriverCapabilities: "video,display",
 				Requirements:       []string{"cuda>=9.0", "req0=true", "req1=false"},
 				DisableRequire:     true,
 			},
@@ -346,7 +347,7 @@ func TestGetNvidiaConfig(t *testing.T) {
 
 			expectedConfig: &nvidiaConfig{
 				Devices:            "all",
-				DriverCapabilities: defaultDriverCapabilities,
+				DriverCapabilities: defaultDriverCapabilities.String(),
 				Requirements:       []string{},
 				DisableRequire:     false,
 			},
@@ -362,7 +363,7 @@ func TestGetNvidiaConfig(t *testing.T) {
 			expectedConfig: &nvidiaConfig{
 				Devices:            "all",
 				MigConfigDevices:   "mig0,mig1",
-				DriverCapabilities: defaultDriverCapabilities,
+				DriverCapabilities: defaultDriverCapabilities.String(),
 				Requirements:       []string{"cuda>=9.0"},
 				DisableRequire:     false,
 			},
@@ -388,7 +389,7 @@ func TestGetNvidiaConfig(t *testing.T) {
 			expectedConfig: &nvidiaConfig{
 				Devices:            "all",
 				MigMonitorDevices:  "mig0,mig1",
-				DriverCapabilities: defaultDriverCapabilities,
+				DriverCapabilities: defaultDriverCapabilities.String(),
 				Requirements:       []string{"cuda>=9.0"},
 				DisableRequire:     false,
 			},
@@ -403,14 +404,62 @@ func TestGetNvidiaConfig(t *testing.T) {
 			privileged:    false,
 			expectedPanic: true,
 		},
+		{
+			description: "Hook config set as driver-capabilities-all",
+			env: map[string]string{
+				envNVVisibleDevices:     "all",
+				envNVDriverCapabilities: "all",
+			},
+			privileged: true,
+			hookConfig: &HookConfig{
+				SupportedDriverCapabilities: "video,display",
+			},
+			expectedConfig: &nvidiaConfig{
+				Devices:            "all",
+				DriverCapabilities: "video,display",
+			},
+		},
+		{
+			description: "Hook config set, envvar sets driver-capabilities",
+			env: map[string]string{
+				envNVVisibleDevices:     "all",
+				envNVDriverCapabilities: "video,display",
+			},
+			privileged: true,
+			hookConfig: &HookConfig{
+				SupportedDriverCapabilities: "video,display,compute,utility",
+			},
+			expectedConfig: &nvidiaConfig{
+				Devices:            "all",
+				DriverCapabilities: "video,display",
+			},
+		},
+		{
+			description: "Hook config set, envvar unset sets default driver-capabilities",
+			env: map[string]string{
+				envNVVisibleDevices: "all",
+			},
+			privileged: true,
+			hookConfig: &HookConfig{
+				SupportedDriverCapabilities: "video,display,utility,compute",
+			},
+			expectedConfig: &nvidiaConfig{
+				Devices:            "all",
+				DriverCapabilities: defaultDriverCapabilities.String(),
+			},
+		},
 	}
 	for _, tc := range tests {
 		t.Run(tc.description, func(t *testing.T) {
 			// Wrap the call to getNvidiaConfig() in a closure.
 			var config *nvidiaConfig
 			getConfig := func() {
-				hookConfig := getDefaultHookConfig()
-				config = getNvidiaConfig(&hookConfig, tc.env, nil, tc.privileged)
+				hookConfig := tc.hookConfig
+				if hookConfig == nil {
+					defaultConfig := getDefaultHookConfig()
+					hookConfig = &defaultConfig
+				}
+				config = getNvidiaConfig(hookConfig, tc.env, nil, tc.privileged)
 			}
 
 			// For any tests that are expected to panic, make sure they do.
@@ -822,3 +871,119 @@ func TestGetDevicesFromEnvvar(t *testing.T) {
 		})
 	}
 }
+
+func TestGetDriverCapabilities(t *testing.T) {
+
+	supportedCapabilities := "compute,utility,display,video"
+
+	testCases := []struct {
+		description           string
+		env                   map[string]string
+		legacyImage           bool
+		supportedCapabilities string
+		expectedPanic         bool
+		expectedCapabilities  string
+	}{
+		{
+			description: "Env is set for legacy image",
+			env: map[string]string{
+				envNVDriverCapabilities: "display,video",
+			},
+			legacyImage:           true,
+			supportedCapabilities: supportedCapabilities,
+			expectedCapabilities:  "display,video",
+		},
+		{
+			description: "Env is all for legacy image",
+			env: map[string]string{
+				envNVDriverCapabilities: "all",
+			},
+			legacyImage:           true,
+			supportedCapabilities: supportedCapabilities,
+			expectedCapabilities:  supportedCapabilities,
+		},
+		{
+			description: "Env is empty for legacy image",
+			env: map[string]string{
+				envNVDriverCapabilities: "",
+			},
+			legacyImage:           true,
+			supportedCapabilities: supportedCapabilities,
+			expectedCapabilities:  defaultDriverCapabilities.String(),
+		},
+		{
+			description:           "Env unset for legacy image is 'all'",
+			env:                   map[string]string{},
+			legacyImage:           true,
+			supportedCapabilities: supportedCapabilities,
+			expectedCapabilities:  supportedCapabilities,
+		},
+		{
+			description: "Env is set for modern image",
+			env: map[string]string{
+				envNVDriverCapabilities: "display,video",
+			},
+			legacyImage:           false,
+			supportedCapabilities: supportedCapabilities,
+			expectedCapabilities:  "display,video",
+		},
+		{
+			description:           "Env unset for modern image is default",
+			env:                   map[string]string{},
+			legacyImage:           false,
+			supportedCapabilities: supportedCapabilities,
+			expectedCapabilities:  defaultDriverCapabilities.String(),
+		},
+		{
+			description: "Env is all for modern image",
+			env: map[string]string{
+				envNVDriverCapabilities: "all",
+			},
+			legacyImage:           false,
+			supportedCapabilities: supportedCapabilities,
+			expectedCapabilities:  supportedCapabilities,
+		},
+		{
+			description: "Env is empty for modern image",
+			env: map[string]string{
+				envNVDriverCapabilities: "",
+			},
+			legacyImage:           false,
+			supportedCapabilities: supportedCapabilities,
+			expectedCapabilities:  defaultDriverCapabilities.String(),
+		},
+		{
+			description: "Invalid capabilities panic",
+			env: map[string]string{
+				envNVDriverCapabilities: "compute,utility",
+			},
+			supportedCapabilities: "not-compute,not-utility",
+			expectedPanic:         true,
+		},
+		{
+			description:           "Default is restricted for modern image",
+			legacyImage:           false,
+			supportedCapabilities: "compute",
+			expectedCapabilities:  "compute",
+		},
+	}
+
+	for _, tc := range testCases {
+		t.Run(tc.description, func(t *testing.T) {
+			var capabilites DriverCapabilities
+
+			getDriverCapabilities := func() {
+				supportedCapabilities := DriverCapabilities(tc.supportedCapabilities)
+				capabilites = getDriverCapabilities(tc.env, supportedCapabilities, tc.legacyImage)
+			}
+
+			if tc.expectedPanic {
+				require.Panics(t, getDriverCapabilities)
+				return
+			}
+
+			getDriverCapabilities()
+			require.EqualValues(t, tc.expectedCapabilities, capabilites)
+		})
+	}
+}

cmd/nvidia-container-toolkit/hook_config.go

@@ -35,10 +35,11 @@ type CLIConfig struct {
 
 // HookConfig : options for the nvidia-container-toolkit.
 type HookConfig struct {
-	DisableRequire                 bool    `toml:"disable-require"`
-	SwarmResource                  *string `toml:"swarm-resource"`
-	AcceptEnvvarUnprivileged       bool    `toml:"accept-nvidia-visible-devices-envvar-when-unprivileged"`
-	AcceptDeviceListAsVolumeMounts bool    `toml:"accept-nvidia-visible-devices-as-volume-mounts"`
+	DisableRequire                 bool               `toml:"disable-require"`
+	SwarmResource                  *string            `toml:"swarm-resource"`
+	AcceptEnvvarUnprivileged       bool               `toml:"accept-nvidia-visible-devices-envvar-when-unprivileged"`
+	AcceptDeviceListAsVolumeMounts bool               `toml:"accept-nvidia-visible-devices-as-volume-mounts"`
+	SupportedDriverCapabilities    DriverCapabilities `toml:"supported-driver-capabilities"`
 
 	NvidiaContainerCLI CLIConfig `toml:"nvidia-container-cli"`
 }
@@ -49,6 +50,7 @@ func getDefaultHookConfig() (config HookConfig) {
 		SwarmResource:                  nil,
 		AcceptEnvvarUnprivileged:       true,
 		AcceptDeviceListAsVolumeMounts: false,
+		SupportedDriverCapabilities:    allDriverCapabilities,
 		NvidiaContainerCLI: CLIConfig{
 			Root:        nil,
 			Path:        nil,
@@ -85,6 +87,15 @@ func getHookConfig() (config HookConfig) {
 		}
 	}
 
+	if config.SupportedDriverCapabilities == all {
+		config.SupportedDriverCapabilities = allDriverCapabilities
+	}
+	// We ensure that the supported-driver-capabilites option is a subset of allDriverCapabilities
+	if intersection := allDriverCapabilities.Intersection(config.SupportedDriverCapabilities); intersection != config.SupportedDriverCapabilities {
+		configName := config.getConfigOption("SupportedDriverCapabilities")
+		log.Panicf("Invalid value for config option '%v'; %v (supported: %v)\n", configName, config.SupportedDriverCapabilities, allDriverCapabilities)
+	}
+
 	return config
 }
 

cmd/nvidia-container-toolkit/hook_config_test.go

@@ -0,0 +1,105 @@
+/**
+# Copyright (c) 2021, NVIDIA CORPORATION.  All rights reserved.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+**/
+
+package main
+
+import (
+	"fmt"
+	"os"
+	"testing"
+
+	"github.com/stretchr/testify/require"
+)
+
+func TestGetHookConfig(t *testing.T) {
+	testCases := []struct {
+		lines                      []string
+		expectedPanic              bool
+		expectedDriverCapabilities DriverCapabilities
+	}{
+		{
+			expectedDriverCapabilities: allDriverCapabilities,
+		},
+		{
+			lines: []string{
+				"supported-driver-capabilities = \"all\"",
+			},
+			expectedDriverCapabilities: allDriverCapabilities,
+		},
+		{
+			lines: []string{
+				"supported-driver-capabilities = \"compute,utility,not-compute\"",
+			},
+			expectedPanic: true,
+		},
+		{
+			lines:                      []string{},
+			expectedDriverCapabilities: allDriverCapabilities,
+		},
+		{
+			lines: []string{
+				"supported-driver-capabilities = \"\"",
+			},
+			expectedDriverCapabilities: none,
+		},
+		{
+			lines: []string{
+				"supported-driver-capabilities = \"utility,compute\"",
+			},
+			expectedDriverCapabilities: DriverCapabilities("utility,compute"),
+		},
+	}
+
+	for i, tc := range testCases {
+		t.Run(fmt.Sprintf("test case %d", i), func(t *testing.T) {
+			var filename string
+			defer func() {
+				if len(filename) > 0 {
+					os.Remove(filename)
+				}
+				configflag = nil
+			}()
+
+			if tc.lines != nil {
+				configFile, err := os.CreateTemp("", "*.toml")
+				require.NoError(t, err)
+				defer configFile.Close()
+
+				filename = configFile.Name()
+				configflag = &filename
+
+				for _, line := range tc.lines {
+					_, err := configFile.WriteString(fmt.Sprintf("%s\n", line))
+					require.NoError(t, err)
+				}
+			}
+
+			var config HookConfig
+			getHookConfig := func() {
+				config = getHookConfig()
+			}
+
+			if tc.expectedPanic {
+				require.Panics(t, getHookConfig)
+				return
+			}
+
+			getHookConfig()
+
+			require.EqualValues(t, tc.expectedDriverCapabilities, config.SupportedDriverCapabilities)
+		})
+	}
+}

config/config.toml.ubuntu+jetpack

@@ -0,0 +1,19 @@
+disable-require = false
+supported-driver-capabilities = "compute,compat32,graphics,utility,video,display"
+#swarm-resource = "DOCKER_RESOURCE_GPU"
+#accept-nvidia-visible-devices-envvar-when-unprivileged = true
+#accept-nvidia-visible-devices-as-volume-mounts = false
+
+[nvidia-container-cli]
+#root = "/run/nvidia/driver"
+#path = "/usr/bin/nvidia-container-cli"
+environment = []
+#debug = "/var/log/nvidia-container-toolkit.log"
+#ldcache = "/etc/ld.so.cache"
+load-kmods = true
+#no-cgroups = false
+#user = "root:video"
+ldconfig = "@/sbin/ldconfig.real"
+
+[nvidia-container-runtime]
+#debug = "/var/log/nvidia-container-runtime.log"

docker/Dockerfile.amazonlinux

@@ -42,7 +42,9 @@ COPY . .
 
 RUN make PREFIX=${DIST_DIR} cmds
 
-COPY config/config.toml.amzn $DIST_DIR/config.toml
+ARG CONFIG_TOML_SUFFIX
+ENV CONFIG_TOML_SUFFIX ${CONFIG_TOML_SUFFIX}
+COPY config/config.toml.${CONFIG_TOML_SUFFIX} $DIST_DIR/config.toml
 
 # Hook for Project Atomic's fork of Docker: https://github.com/projectatomic/docker/tree/docker-1.13.1-rhel#add-dockerhooks-exec-custom-hooks-for-prestartpoststop-containerspatch
 # This might not be useful on Amazon Linux, but it's simpler to keep the RHEL

docker/Dockerfile.centos

@@ -42,7 +42,9 @@ COPY . .
 
 RUN make PREFIX=${DIST_DIR} cmds
 
-COPY config/config.toml.centos $DIST_DIR/config.toml
+ARG CONFIG_TOML_SUFFIX
+ENV CONFIG_TOML_SUFFIX ${CONFIG_TOML_SUFFIX}
+COPY config/config.toml.${CONFIG_TOML_SUFFIX} $DIST_DIR/config.toml
 
 # Hook for Project Atomic's fork of Docker: https://github.com/projectatomic/docker/tree/docker-1.13.1-rhel#add-dockerhooks-exec-custom-hooks-for-prestartpoststop-containerspatch
 COPY oci-nvidia-hook $DIST_DIR/oci-nvidia-hook

docker/Dockerfile.debian

@@ -50,7 +50,9 @@ COPY . .
 
 RUN make PREFIX=${DIST_DIR} cmds
 
-COPY config/config.toml.debian $DIST_DIR/config.toml
+ARG CONFIG_TOML_SUFFIX
+ENV CONFIG_TOML_SUFFIX ${CONFIG_TOML_SUFFIX}
+COPY config/config.toml.${CONFIG_TOML_SUFFIX} $DIST_DIR/config.toml
 
 # Debian Jessie still had ldconfig.real
 RUN if [ "$(lsb_release -cs)" = "jessie" ]; then \

docker/Dockerfile.opensuse-leap

@@ -47,7 +47,9 @@ COPY oci-nvidia-hook $DIST_DIR/oci-nvidia-hook
 # Hook for libpod/CRI-O: https://github.com/containers/libpod/blob/v0.8.5/pkg/hooks/docs/oci-hooks.5.md
 COPY oci-nvidia-hook.json $DIST_DIR/oci-nvidia-hook.json
 
-COPY config/config.toml.opensuse-leap $DIST_DIR/config.toml
+ARG CONFIG_TOML_SUFFIX
+ENV CONFIG_TOML_SUFFIX ${CONFIG_TOML_SUFFIX}
+COPY config/config.toml.${CONFIG_TOML_SUFFIX} $DIST_DIR/config.toml
 
 WORKDIR $DIST_DIR/..
 COPY packaging/rpm .

docker/Dockerfile.ubuntu

@@ -48,7 +48,9 @@ COPY . .
 
 RUN make PREFIX=${DIST_DIR} cmds
 
-COPY config/config.toml.ubuntu $DIST_DIR/config.toml
+ARG CONFIG_TOML_SUFFIX
+ENV CONFIG_TOML_SUFFIX ${CONFIG_TOML_SUFFIX}
+COPY config/config.toml.${CONFIG_TOML_SUFFIX} $DIST_DIR/config.toml
 
 WORKDIR $DIST_DIR
 COPY packaging/debian ./debian

docker/docker.mk

@@ -114,6 +114,9 @@ docker-all: $(AMD64_TARGETS) $(X86_64_TARGETS) \
 --rhel%: VERSION = $(patsubst rhel%-$(ARCH),%,$(TARGET_PLATFORM))
 --rhel%: ARTIFACTS_DIR = $(DIST_DIR)/rhel$(VERSION)/$(ARCH)
 
+# We allow the CONFIG_TOML_SUFFIX to be overridden.
+CONFIG_TOML_SUFFIX ?= $(OS)
+
 docker-build-%:
 	@echo "Building for $(TARGET_PLATFORM)"
 	docker pull --platform=linux/$(ARCH) $(BASEIMAGE)
@@ -124,6 +127,7 @@ docker-build-%:
 	    --build-arg GOLANG_VERSION="$(GOLANG_VERSION)" \
 	    --build-arg PKG_VERS="$(LIB_VERSION)" \
 	    --build-arg PKG_REV="$(PKG_REV)" \
+	    --build-arg CONFIG_TOML_SUFFIX="$(CONFIG_TOML_SUFFIX)" \
 	    --tag $(BUILDIMAGE) \
 	    --file $(DOCKERFILE) .
 	$(DOCKER) run \

go.mod

@@ -4,7 +4,6 @@ go 1.14
 
 require (
 	github.com/BurntSushi/toml v0.3.1
-	github.com/containerd/containerd v1.5.7
 	github.com/containers/podman/v2 v2.2.1
 	github.com/opencontainers/runtime-spec v1.0.3-0.20211101234015-a3c33d663ebc
 	github.com/pelletier/go-toml v1.9.3

internal/oci/runtime_low_level.go

@@ -32,7 +32,7 @@ func NewLowLevelRuntime(candidates ...string) (Runtime, error) {
 
 // NewLowLevelRuntimeWithLogger creates a Runtime as with NewLowLevelRuntime using the specified logger.
 func NewLowLevelRuntimeWithLogger(logger *log.Logger, candidates ...string) (Runtime, error) {
-	runtimePath, err := findRuntime(candidates)
+	runtimePath, err := findRuntime(logger, candidates)
 	if err != nil {
 		return nil, fmt.Errorf("error locating runtime: %v", err)
 	}
@@ -42,19 +42,19 @@ func NewLowLevelRuntimeWithLogger(logger *log.Logger, candidates ...string) (Run
 
 // findRuntime checks elements in a list of supplied candidates for a matching executable in the PATH.
 // The absolute path to the first match is returned.
-func findRuntime(candidates []string) (string, error) {
+func findRuntime(logger *log.Logger, candidates []string) (string, error) {
 	if len(candidates) == 0 {
 		return "", fmt.Errorf("at least one runtime candidate must be specified")
 	}
 
 	for _, candidate := range candidates {
-		log.Infof("Looking for runtime binary '%v'", candidate)
+		logger.Infof("Looking for runtime binary '%v'", candidate)
 		runcPath, err := exec.LookPath(candidate)
 		if err == nil {
-			log.Infof("Found runtime binary '%v'", runcPath)
+			logger.Infof("Found runtime binary '%v'", runcPath)
 			return runcPath, nil
 		}
-		log.Warnf("Runtime binary '%v' not found: %v", candidate, err)
+		logger.Warnf("Runtime binary '%v' not found: %v", candidate, err)
 	}
 
 	return "", fmt.Errorf("no runtime binary found from candidate list: %v", candidates)

packaging/debian/changelog

@@ -1,5 +1,20 @@
+nvidia-container-toolkit (1.7.0~rc.1-1) experimental; urgency=medium
+
+  * Specify containerd runtime type as string in config tools to remove dependency on containerd package
+  * Add supported-driver-capabilities config option to allow for a subset of all driver capabilities to be specified
+
+ -- NVIDIA CORPORATION <cudatools@nvidia.com>  Thu, 25 Nov 2021 11:36:29 +0100
+
+nvidia-container-toolkit (1.6.0-1) UNRELEASED; urgency=medium
+
+  * Promote 1.6.0~rc.3-1 to 1.6.0-1
+  * Fix unnecessary logging to stderr instead of configured nvidia-container-runtime log file
+
+ -- NVIDIA CORPORATION <cudatools@nvidia.com>  Wed, 17 Nov 2021 09:25:15 +0100
+
 nvidia-container-toolkit (1.6.0~rc.3-1) experimental; urgency=medium
 
+  * Add supported-driver-capabilities config option to the nvidia-container-toolkit
   * Move OCI and command line checks for runtime to internal oci package
 
  -- NVIDIA CORPORATION <cudatools@nvidia.com>  Mon, 15 Nov 2021 13:02:23 +0100

packaging/rpm/SPECS/nvidia-container-toolkit.spec

@@ -64,8 +64,17 @@ rm -f %{_bindir}/nvidia-container-runtime-hook
 /usr/share/containers/oci/hooks.d/oci-nvidia-hook.json
 
 %changelog
+* Thu Nov 25 2021 NVIDIA CORPORATION <cudatools@nvidia.com> 1.7.0-0.1.rc.1
+- Specify containerd runtime type as string in config tools to remove dependency on containerd package
+- Add supported-driver-capabilities config option to allow for a subset of all driver capabilities to be specified
+
+* Wed Nov 17 2021 NVIDIA CORPORATION <cudatools@nvidia.com> 1.6.0-1
+- Promote 1.6.0-0.1.rc.3 to 1.6.0-1
+- Fix unnecessary logging to stderr instead of configured nvidia-container-runtime log file
+
 * Mon Nov 15 2021 NVIDIA CORPORATION <cudatools@nvidia.com> 1.6.0-0.1.rc.3
 
+- Add supported-driver-capabilities config option to the nvidia-container-toolkit
 - Move OCI and command line checks for runtime to internal oci package
 
 * Fri Nov 05 2021 NVIDIA CORPORATION <cudatools@nvidia.com> 1.6.0-0.1.rc.2

scripts/build-all-components.sh

@@ -59,15 +59,18 @@ if [[ -z ${NVIDIA_CONTAINER_TOOLKIT_VERSION} ]]; then
 eval $(${SCRIPTS_DIR}/get-component-versions.sh)
 fi
 
-# We set the TOOLKIT_VERSION for the nvidia-container-runtime and nvidia-docker targets
+# We set the TOOLKIT_VERSION, TOOLKIT_TAG for the nvidia-container-runtime and nvidia-docker targets
+# The LIB_TAG is also overridden to match the TOOLKIT_TAG.
 # Build nvidia-container-runtime
 make -C ${NVIDIA_CONTAINER_RUNTIME_ROOT} \
+    LIB_TAG="${NVIDIA_CONTAINER_TOOLKIT_TAG}" \
     TOOLKIT_VERSION="${NVIDIA_CONTAINER_TOOLKIT_VERSION}" \
     TOOLKIT_TAG="${NVIDIA_CONTAINER_TOOLKIT_TAG}" \
         ${TARGET}
 
 # Build nvidia-docker2
 make -C ${NVIDIA_DOCKER_ROOT} \
+    LIB_TAG="${NVIDIA_CONTAINER_TOOLKIT_TAG}" \
     TOOLKIT_VERSION="${NVIDIA_CONTAINER_TOOLKIT_VERSION}" \
     TOOLKIT_TAG="${NVIDIA_CONTAINER_TOOLKIT_TAG}" \
         ${TARGET}

scripts/release.sh

@@ -56,16 +56,6 @@ eval $(${SCRIPTS_DIR}/get-component-versions.sh)
 export NVIDIA_CONTAINER_TOOLKIT_VERSION
 export NVIDIA_CONTAINER_TOOLKIT_TAG
 
-if [[ "${NVIDIA_CONTAINER_TOOLKIT_TAG}" != "${NVIDIA_CONTAINER_RUNTIME_TAG}" ]]; then
-    echo "ERROR: The nvidia-container-runtime and nvidia-container-toolkit version tags do not match"
-    exit  1
-fi
-
-if [[ "${NVIDIA_CONTAINER_TOOLKIT_TAG}" != "${NVIDIA_DOCKER_TAG}" ]]; then
-    echo "ERROR: The nvidia-docker and nvidia-container-toolkit version tags do not match"
-    exit 1
-fi
-
 for target in ${targets[@]}; do
     ${SCRIPTS_DIR}/build-all-components.sh ${target}
 done

tools/container/containerd/containerd.go

@@ -25,7 +25,6 @@ import (
 	"syscall"
 	"time"
 
-	"github.com/containerd/containerd/plugin"
 	toml "github.com/pelletier/go-toml"
 	log "github.com/sirupsen/logrus"
 	cli "github.com/urfave/cli/v2"
@@ -44,7 +43,7 @@ const (
 	defaultConfig        = "/etc/containerd/config.toml"
 	defaultSocket        = "/run/containerd/containerd.sock"
 	defaultRuntimeClass  = "nvidia"
-	defaultRuntmeType    = plugin.RuntimeRuncV2
+	defaultRuntmeType    = "io.containerd.runc.v2"
 	defaultSetAsDefault  = true
 	defaultRestartMode   = restartModeSignal
 	defaultHostRootMount = "/host"

vendor/github.com/containerd/containerd/LICENSE

@@ -1,191 +0,0 @@
-
-                                 Apache License
-                           Version 2.0, January 2004
-                        https://www.apache.org/licenses/
-
-   TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
-
-   1. Definitions.
-
-      "License" shall mean the terms and conditions for use, reproduction,
-      and distribution as defined by Sections 1 through 9 of this document.
-
-      "Licensor" shall mean the copyright owner or entity authorized by
-      the copyright owner that is granting the License.
-
-      "Legal Entity" shall mean the union of the acting entity and all
-      other entities that control, are controlled by, or are under common
-      control with that entity. For the purposes of this definition,
-      "control" means (i) the power, direct or indirect, to cause the
-      direction or management of such entity, whether by contract or
-      otherwise, or (ii) ownership of fifty percent (50%) or more of the
-      outstanding shares, or (iii) beneficial ownership of such entity.
-
-      "You" (or "Your") shall mean an individual or Legal Entity
-      exercising permissions granted by this License.
-
-      "Source" form shall mean the preferred form for making modifications,
-      including but not limited to software source code, documentation
-      source, and configuration files.
-
-      "Object" form shall mean any form resulting from mechanical
-      transformation or translation of a Source form, including but
-      not limited to compiled object code, generated documentation,
-      and conversions to other media types.
-
-      "Work" shall mean the work of authorship, whether in Source or
-      Object form, made available under the License, as indicated by a
-      copyright notice that is included in or attached to the work
-      (an example is provided in the Appendix below).
-
-      "Derivative Works" shall mean any work, whether in Source or Object
-      form, that is based on (or derived from) the Work and for which the
-      editorial revisions, annotations, elaborations, or other modifications
-      represent, as a whole, an original work of authorship. For the purposes
-      of this License, Derivative Works shall not include works that remain
-      separable from, or merely link (or bind by name) to the interfaces of,
-      the Work and Derivative Works thereof.
-
-      "Contribution" shall mean any work of authorship, including
-      the original version of the Work and any modifications or additions
-      to that Work or Derivative Works thereof, that is intentionally
-      submitted to Licensor for inclusion in the Work by the copyright owner
-      or by an individual or Legal Entity authorized to submit on behalf of
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-      to the Licensor or its representatives, including but not limited to
-      communication on electronic mailing lists, source code control systems,
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-      Licensor for the purpose of discussing and improving the Work, but
-      excluding communication that is conspicuously marked or otherwise
-      designated in writing by the copyright owner as "Not a Contribution."
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-      "Contributor" shall mean Licensor and any individual or Legal Entity
-      on behalf of whom a Contribution has been received by Licensor and
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-   2. Grant of Copyright License. Subject to the terms and conditions of
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-   4. Redistribution. You may reproduce and distribute copies of the
-      Work or Derivative Works thereof in any medium, with or without
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-          include a readable copy of the attribution notices contained
-          within such NOTICE file, excluding those notices that do not
-          pertain to any part of the Derivative Works, in at least one
-          of the following places: within a NOTICE text file distributed
-          as part of the Derivative Works; within the Source form or
-          documentation, if provided along with the Derivative Works; or,
-          within a display generated by the Derivative Works, if and
-          wherever such third-party notices normally appear. The contents
-          of the NOTICE file are for informational purposes only and
-          do not modify the License. You may add Your own attribution
-          notices within Derivative Works that You distribute, alongside
-          or as an addendum to the NOTICE text from the Work, provided
-          that such additional attribution notices cannot be construed
-          as modifying the License.
-
-      You may add Your own copyright statement to Your modifications and
-      may provide additional or different license terms and conditions
-      for use, reproduction, or distribution of Your modifications, or
-      for any such Derivative Works as a whole, provided Your use,
-      reproduction, and distribution of the Work otherwise complies with
-      the conditions stated in this License.
-
-   5. Submission of Contributions. Unless You explicitly state otherwise,
-      any Contribution intentionally submitted for inclusion in the Work
-      by You to the Licensor shall be under the terms and conditions of
-      this License, without any additional terms or conditions.
-      Notwithstanding the above, nothing herein shall supersede or modify
-      the terms of any separate license agreement you may have executed
-      with Licensor regarding such Contributions.
-
-   6. Trademarks. This License does not grant permission to use the trade
-      names, trademarks, service marks, or product names of the Licensor,
-      except as required for reasonable and customary use in describing the
-      origin of the Work and reproducing the content of the NOTICE file.
-
-   7. Disclaimer of Warranty. Unless required by applicable law or
-      agreed to in writing, Licensor provides the Work (and each
-      Contributor provides its Contributions) on an "AS IS" BASIS,
-      WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
-      implied, including, without limitation, any warranties or conditions
-      of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
-      PARTICULAR PURPOSE. You are solely responsible for determining the
-      appropriateness of using or redistributing the Work and assume any
-      risks associated with Your exercise of permissions under this License.
-
-   8. Limitation of Liability. In no event and under no legal theory,
-      whether in tort (including negligence), contract, or otherwise,
-      unless required by applicable law (such as deliberate and grossly
-      negligent acts) or agreed to in writing, shall any Contributor be
-      liable to You for damages, including any direct, indirect, special,
-      incidental, or consequential damages of any character arising as a
-      result of this License or out of the use or inability to use the
-      Work (including but not limited to damages for loss of goodwill,
-      work stoppage, computer failure or malfunction, or any and all
-      other commercial damages or losses), even if such Contributor
-      has been advised of the possibility of such damages.
-
-   9. Accepting Warranty or Additional Liability. While redistributing
-      the Work or Derivative Works thereof, You may choose to offer,
-      and charge a fee for, acceptance of support, warranty, indemnity,
-      or other liability obligations and/or rights consistent with this
-      License. However, in accepting such obligations, You may act only
-      on Your own behalf and on Your sole responsibility, not on behalf
-      of any other Contributor, and only if You agree to indemnify,
-      defend, and hold each Contributor harmless for any liability
-      incurred by, or claims asserted against, such Contributor by reason
-      of your accepting any such warranty or additional liability.
-
-   END OF TERMS AND CONDITIONS
-
-   Copyright The containerd Authors
-
-   Licensed under the Apache License, Version 2.0 (the "License");
-   you may not use this file except in compliance with the License.
-   You may obtain a copy of the License at
-
-       https://www.apache.org/licenses/LICENSE-2.0
-
-   Unless required by applicable law or agreed to in writing, software
-   distributed under the License is distributed on an "AS IS" BASIS,
-   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-   See the License for the specific language governing permissions and
-   limitations under the License.

vendor/github.com/containerd/containerd/NOTICE

@@ -1,16 +0,0 @@
-Docker
-Copyright 2012-2015 Docker, Inc.
-
-This product includes software developed at Docker, Inc. (https://www.docker.com).
-
-The following is courtesy of our legal counsel:
-
-
-Use and transfer of Docker may be subject to certain restrictions by the
-United States and other governments.
-It is your responsibility to ensure that your use and/or transfer does not
-violate applicable laws.
-
-For more information, please see https://www.bis.doc.gov
-
-See also https://www.apache.org/dev/crypto.html and/or seek legal counsel.

vendor/github.com/containerd/containerd/errdefs/errors.go

@@ -1,93 +0,0 @@
-/*
-   Copyright The containerd Authors.
-
-   Licensed under the Apache License, Version 2.0 (the "License");
-   you may not use this file except in compliance with the License.
-   You may obtain a copy of the License at
-
-       http://www.apache.org/licenses/LICENSE-2.0
-
-   Unless required by applicable law or agreed to in writing, software
-   distributed under the License is distributed on an "AS IS" BASIS,
-   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-   See the License for the specific language governing permissions and
-   limitations under the License.
-*/
-
-// Package errdefs defines the common errors used throughout containerd
-// packages.
-//
-// Use with errors.Wrap and error.Wrapf to add context to an error.
-//
-// To detect an error class, use the IsXXX functions to tell whether an error
-// is of a certain type.
-//
-// The functions ToGRPC and FromGRPC can be used to map server-side and
-// client-side errors to the correct types.
-package errdefs
-
-import (
-	"context"
-
-	"github.com/pkg/errors"
-)
-
-// Definitions of common error types used throughout containerd. All containerd
-// errors returned by most packages will map into one of these errors classes.
-// Packages should return errors of these types when they want to instruct a
-// client to take a particular action.
-//
-// For the most part, we just try to provide local grpc errors. Most conditions
-// map very well to those defined by grpc.
-var (
-	ErrUnknown            = errors.New("unknown") // used internally to represent a missed mapping.
-	ErrInvalidArgument    = errors.New("invalid argument")
-	ErrNotFound           = errors.New("not found")
-	ErrAlreadyExists      = errors.New("already exists")
-	ErrFailedPrecondition = errors.New("failed precondition")
-	ErrUnavailable        = errors.New("unavailable")
-	ErrNotImplemented     = errors.New("not implemented") // represents not supported and unimplemented
-)
-
-// IsInvalidArgument returns true if the error is due to an invalid argument
-func IsInvalidArgument(err error) bool {
-	return errors.Is(err, ErrInvalidArgument)
-}
-
-// IsNotFound returns true if the error is due to a missing object
-func IsNotFound(err error) bool {
-	return errors.Is(err, ErrNotFound)
-}
-
-// IsAlreadyExists returns true if the error is due to an already existing
-// metadata item
-func IsAlreadyExists(err error) bool {
-	return errors.Is(err, ErrAlreadyExists)
-}
-
-// IsFailedPrecondition returns true if an operation could not proceed to the
-// lack of a particular condition
-func IsFailedPrecondition(err error) bool {
-	return errors.Is(err, ErrFailedPrecondition)
-}
-
-// IsUnavailable returns true if the error is due to a resource being unavailable
-func IsUnavailable(err error) bool {
-	return errors.Is(err, ErrUnavailable)
-}
-
-// IsNotImplemented returns true if the error is due to not being implemented
-func IsNotImplemented(err error) bool {
-	return errors.Is(err, ErrNotImplemented)
-}
-
-// IsCanceled returns true if the error is due to `context.Canceled`.
-func IsCanceled(err error) bool {
-	return errors.Is(err, context.Canceled)
-}
-
-// IsDeadlineExceeded returns true if the error is due to
-// `context.DeadlineExceeded`.
-func IsDeadlineExceeded(err error) bool {
-	return errors.Is(err, context.DeadlineExceeded)
-}

vendor/github.com/containerd/containerd/errdefs/grpc.go

@@ -1,147 +0,0 @@
-/*
-   Copyright The containerd Authors.
-
-   Licensed under the Apache License, Version 2.0 (the "License");
-   you may not use this file except in compliance with the License.
-   You may obtain a copy of the License at
-
-       http://www.apache.org/licenses/LICENSE-2.0
-
-   Unless required by applicable law or agreed to in writing, software
-   distributed under the License is distributed on an "AS IS" BASIS,
-   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-   See the License for the specific language governing permissions and
-   limitations under the License.
-*/
-
-package errdefs
-
-import (
-	"context"
-	"strings"
-
-	"github.com/pkg/errors"
-	"google.golang.org/grpc/codes"
-	"google.golang.org/grpc/status"
-)
-
-// ToGRPC will attempt to map the backend containerd error into a grpc error,
-// using the original error message as a description.
-//
-// Further information may be extracted from certain errors depending on their
-// type.
-//
-// If the error is unmapped, the original error will be returned to be handled
-// by the regular grpc error handling stack.
-func ToGRPC(err error) error {
-	if err == nil {
-		return nil
-	}
-
-	if isGRPCError(err) {
-		// error has already been mapped to grpc
-		return err
-	}
-
-	switch {
-	case IsInvalidArgument(err):
-		return status.Errorf(codes.InvalidArgument, err.Error())
-	case IsNotFound(err):
-		return status.Errorf(codes.NotFound, err.Error())
-	case IsAlreadyExists(err):
-		return status.Errorf(codes.AlreadyExists, err.Error())
-	case IsFailedPrecondition(err):
-		return status.Errorf(codes.FailedPrecondition, err.Error())
-	case IsUnavailable(err):
-		return status.Errorf(codes.Unavailable, err.Error())
-	case IsNotImplemented(err):
-		return status.Errorf(codes.Unimplemented, err.Error())
-	case IsCanceled(err):
-		return status.Errorf(codes.Canceled, err.Error())
-	case IsDeadlineExceeded(err):
-		return status.Errorf(codes.DeadlineExceeded, err.Error())
-	}
-
-	return err
-}
-
-// ToGRPCf maps the error to grpc error codes, assembling the formatting string
-// and combining it with the target error string.
-//
-// This is equivalent to errors.ToGRPC(errors.Wrapf(err, format, args...))
-func ToGRPCf(err error, format string, args ...interface{}) error {
-	return ToGRPC(errors.Wrapf(err, format, args...))
-}
-
-// FromGRPC returns the underlying error from a grpc service based on the grpc error code
-func FromGRPC(err error) error {
-	if err == nil {
-		return nil
-	}
-
-	var cls error // divide these into error classes, becomes the cause
-
-	switch code(err) {
-	case codes.InvalidArgument:
-		cls = ErrInvalidArgument
-	case codes.AlreadyExists:
-		cls = ErrAlreadyExists
-	case codes.NotFound:
-		cls = ErrNotFound
-	case codes.Unavailable:
-		cls = ErrUnavailable
-	case codes.FailedPrecondition:
-		cls = ErrFailedPrecondition
-	case codes.Unimplemented:
-		cls = ErrNotImplemented
-	case codes.Canceled:
-		cls = context.Canceled
-	case codes.DeadlineExceeded:
-		cls = context.DeadlineExceeded
-	default:
-		cls = ErrUnknown
-	}
-
-	msg := rebaseMessage(cls, err)
-	if msg != "" {
-		err = errors.Wrap(cls, msg)
-	} else {
-		err = errors.WithStack(cls)
-	}
-
-	return err
-}
-
-// rebaseMessage removes the repeats for an error at the end of an error
-// string. This will happen when taking an error over grpc then remapping it.
-//
-// Effectively, we just remove the string of cls from the end of err if it
-// appears there.
-func rebaseMessage(cls error, err error) string {
-	desc := errDesc(err)
-	clss := cls.Error()
-	if desc == clss {
-		return ""
-	}
-
-	return strings.TrimSuffix(desc, ": "+clss)
-}
-
-func isGRPCError(err error) bool {
-	_, ok := status.FromError(err)
-	return ok
-}
-
-func code(err error) codes.Code {
-	if s, ok := status.FromError(err); ok {
-		return s.Code()
-	}
-	return codes.Unknown
-}
-
-func errDesc(err error) string {
-	if s, ok := status.FromError(err); ok {
-		return s.Message()
-	}
-	return err.Error()
-}

vendor/github.com/containerd/containerd/events/events.go

@@ -1,81 +0,0 @@
-/*
-   Copyright The containerd Authors.
-
-   Licensed under the Apache License, Version 2.0 (the "License");
-   you may not use this file except in compliance with the License.
-   You may obtain a copy of the License at
-
-       http://www.apache.org/licenses/LICENSE-2.0
-
-   Unless required by applicable law or agreed to in writing, software
-   distributed under the License is distributed on an "AS IS" BASIS,
-   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-   See the License for the specific language governing permissions and
-   limitations under the License.
-*/
-
-package events
-
-import (
-	"context"
-	"time"
-
-	"github.com/containerd/typeurl"
-	"github.com/gogo/protobuf/types"
-)
-
-// Envelope provides the packaging for an event.
-type Envelope struct {
-	Timestamp time.Time
-	Namespace string
-	Topic     string
-	Event     *types.Any
-}
-
-// Field returns the value for the given fieldpath as a string, if defined.
-// If the value is not defined, the second value will be false.
-func (e *Envelope) Field(fieldpath []string) (string, bool) {
-	if len(fieldpath) == 0 {
-		return "", false
-	}
-
-	switch fieldpath[0] {
-	// unhandled: timestamp
-	case "namespace":
-		return e.Namespace, len(e.Namespace) > 0
-	case "topic":
-		return e.Topic, len(e.Topic) > 0
-	case "event":
-		decoded, err := typeurl.UnmarshalAny(e.Event)
-		if err != nil {
-			return "", false
-		}
-
-		adaptor, ok := decoded.(interface {
-			Field([]string) (string, bool)
-		})
-		if !ok {
-			return "", false
-		}
-		return adaptor.Field(fieldpath[1:])
-	}
-	return "", false
-}
-
-// Event is a generic interface for any type of event
-type Event interface{}
-
-// Publisher posts the event.
-type Publisher interface {
-	Publish(ctx context.Context, topic string, event Event) error
-}
-
-// Forwarder forwards an event to the underlying event bus
-type Forwarder interface {
-	Forward(ctx context.Context, envelope *Envelope) error
-}
-
-// Subscriber allows callers to subscribe to events
-type Subscriber interface {
-	Subscribe(ctx context.Context, filters ...string) (ch <-chan *Envelope, errs <-chan error)
-}

vendor/github.com/containerd/containerd/events/exchange/exchange.go

@@ -1,251 +0,0 @@
-/*
-   Copyright The containerd Authors.
-
-   Licensed under the Apache License, Version 2.0 (the "License");
-   you may not use this file except in compliance with the License.
-   You may obtain a copy of the License at
-
-       http://www.apache.org/licenses/LICENSE-2.0
-
-   Unless required by applicable law or agreed to in writing, software
-   distributed under the License is distributed on an "AS IS" BASIS,
-   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-   See the License for the specific language governing permissions and
-   limitations under the License.
-*/
-
-package exchange
-
-import (
-	"context"
-	"strings"
-	"time"
-
-	"github.com/containerd/containerd/errdefs"
-	"github.com/containerd/containerd/events"
-	"github.com/containerd/containerd/filters"
-	"github.com/containerd/containerd/identifiers"
-	"github.com/containerd/containerd/log"
-	"github.com/containerd/containerd/namespaces"
-	"github.com/containerd/typeurl"
-	goevents "github.com/docker/go-events"
-	"github.com/gogo/protobuf/types"
-	"github.com/pkg/errors"
-	"github.com/sirupsen/logrus"
-)
-
-// Exchange broadcasts events
-type Exchange struct {
-	broadcaster *goevents.Broadcaster
-}
-
-// NewExchange returns a new event Exchange
-func NewExchange() *Exchange {
-	return &Exchange{
-		broadcaster: goevents.NewBroadcaster(),
-	}
-}
-
-var _ events.Publisher = &Exchange{}
-var _ events.Forwarder = &Exchange{}
-var _ events.Subscriber = &Exchange{}
-
-// Forward accepts an envelope to be directly distributed on the exchange.
-//
-// This is useful when an event is forwarded on behalf of another namespace or
-// when the event is propagated on behalf of another publisher.
-func (e *Exchange) Forward(ctx context.Context, envelope *events.Envelope) (err error) {
-	if err := validateEnvelope(envelope); err != nil {
-		return err
-	}
-
-	defer func() {
-		logger := log.G(ctx).WithFields(logrus.Fields{
-			"topic": envelope.Topic,
-			"ns":    envelope.Namespace,
-			"type":  envelope.Event.TypeUrl,
-		})
-
-		if err != nil {
-			logger.WithError(err).Error("error forwarding event")
-		} else {
-			logger.Debug("event forwarded")
-		}
-	}()
-
-	return e.broadcaster.Write(envelope)
-}
-
-// Publish packages and sends an event. The caller will be considered the
-// initial publisher of the event. This means the timestamp will be calculated
-// at this point and this method may read from the calling context.
-func (e *Exchange) Publish(ctx context.Context, topic string, event events.Event) (err error) {
-	var (
-		namespace string
-		encoded   *types.Any
-		envelope  events.Envelope
-	)
-
-	namespace, err = namespaces.NamespaceRequired(ctx)
-	if err != nil {
-		return errors.Wrapf(err, "failed publishing event")
-	}
-	if err := validateTopic(topic); err != nil {
-		return errors.Wrapf(err, "envelope topic %q", topic)
-	}
-
-	encoded, err = typeurl.MarshalAny(event)
-	if err != nil {
-		return err
-	}
-
-	envelope.Timestamp = time.Now().UTC()
-	envelope.Namespace = namespace
-	envelope.Topic = topic
-	envelope.Event = encoded
-
-	defer func() {
-		logger := log.G(ctx).WithFields(logrus.Fields{
-			"topic": envelope.Topic,
-			"ns":    envelope.Namespace,
-			"type":  envelope.Event.TypeUrl,
-		})
-
-		if err != nil {
-			logger.WithError(err).Error("error publishing event")
-		} else {
-			logger.Debug("event published")
-		}
-	}()
-
-	return e.broadcaster.Write(&envelope)
-}
-
-// Subscribe to events on the exchange. Events are sent through the returned
-// channel ch. If an error is encountered, it will be sent on channel errs and
-// errs will be closed. To end the subscription, cancel the provided context.
-//
-// Zero or more filters may be provided as strings. Only events that match
-// *any* of the provided filters will be sent on the channel. The filters use
-// the standard containerd filters package syntax.
-func (e *Exchange) Subscribe(ctx context.Context, fs ...string) (ch <-chan *events.Envelope, errs <-chan error) {
-	var (
-		evch                  = make(chan *events.Envelope)
-		errq                  = make(chan error, 1)
-		channel               = goevents.NewChannel(0)
-		queue                 = goevents.NewQueue(channel)
-		dst     goevents.Sink = queue
-	)
-
-	closeAll := func() {
-		channel.Close()
-		queue.Close()
-		e.broadcaster.Remove(dst)
-		close(errq)
-	}
-
-	ch = evch
-	errs = errq
-
-	if len(fs) > 0 {
-		filter, err := filters.ParseAll(fs...)
-		if err != nil {
-			errq <- errors.Wrapf(err, "failed parsing subscription filters")
-			closeAll()
-			return
-		}
-
-		dst = goevents.NewFilter(queue, goevents.MatcherFunc(func(gev goevents.Event) bool {
-			return filter.Match(adapt(gev))
-		}))
-	}
-
-	e.broadcaster.Add(dst)
-
-	go func() {
-		defer closeAll()
-
-		var err error
-	loop:
-		for {
-			select {
-			case ev := <-channel.C:
-				env, ok := ev.(*events.Envelope)
-				if !ok {
-					// TODO(stevvooe): For the most part, we are well protected
-					// from this condition. Both Forward and Publish protect
-					// from this.
-					err = errors.Errorf("invalid envelope encountered %#v; please file a bug", ev)
-					break
-				}
-
-				select {
-				case evch <- env:
-				case <-ctx.Done():
-					break loop
-				}
-			case <-ctx.Done():
-				break loop
-			}
-		}
-
-		if err == nil {
-			if cerr := ctx.Err(); cerr != context.Canceled {
-				err = cerr
-			}
-		}
-
-		errq <- err
-	}()
-
-	return
-}
-
-func validateTopic(topic string) error {
-	if topic == "" {
-		return errors.Wrap(errdefs.ErrInvalidArgument, "must not be empty")
-	}
-
-	if topic[0] != '/' {
-		return errors.Wrapf(errdefs.ErrInvalidArgument, "must start with '/'")
-	}
-
-	if len(topic) == 1 {
-		return errors.Wrapf(errdefs.ErrInvalidArgument, "must have at least one component")
-	}
-
-	components := strings.Split(topic[1:], "/")
-	for _, component := range components {
-		if err := identifiers.Validate(component); err != nil {
-			return errors.Wrapf(err, "failed validation on component %q", component)
-		}
-	}
-
-	return nil
-}
-
-func validateEnvelope(envelope *events.Envelope) error {
-	if err := identifiers.Validate(envelope.Namespace); err != nil {
-		return errors.Wrapf(err, "event envelope has invalid namespace")
-	}
-
-	if err := validateTopic(envelope.Topic); err != nil {
-		return errors.Wrapf(err, "envelope topic %q", envelope.Topic)
-	}
-
-	if envelope.Timestamp.IsZero() {
-		return errors.Wrapf(errdefs.ErrInvalidArgument, "timestamp must be set on forwarded event")
-	}
-
-	return nil
-}
-
-func adapt(ev interface{}) filters.Adaptor {
-	if adaptor, ok := ev.(filters.Adaptor); ok {
-		return adaptor
-	}
-
-	return filters.AdapterFunc(func(fieldpath []string) (string, bool) {
-		return "", false
-	})
-}

vendor/github.com/containerd/containerd/filters/adaptor.go

@@ -1,33 +0,0 @@
-/*
-   Copyright The containerd Authors.
-
-   Licensed under the Apache License, Version 2.0 (the "License");
-   you may not use this file except in compliance with the License.
-   You may obtain a copy of the License at
-
-       http://www.apache.org/licenses/LICENSE-2.0
-
-   Unless required by applicable law or agreed to in writing, software
-   distributed under the License is distributed on an "AS IS" BASIS,
-   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-   See the License for the specific language governing permissions and
-   limitations under the License.
-*/
-
-package filters
-
-// Adaptor specifies the mapping of fieldpaths to a type. For the given field
-// path, the value and whether it is present should be returned. The mapping of
-// the fieldpath to a field is deferred to the adaptor implementation, but
-// should generally follow protobuf field path/mask semantics.
-type Adaptor interface {
-	Field(fieldpath []string) (value string, present bool)
-}
-
-// AdapterFunc allows implementation specific matching of fieldpaths
-type AdapterFunc func(fieldpath []string) (string, bool)
-
-// Field returns the field name and true if it exists
-func (fn AdapterFunc) Field(fieldpath []string) (string, bool) {
-	return fn(fieldpath)
-}

vendor/github.com/containerd/containerd/filters/filter.go

@@ -1,179 +0,0 @@
-/*
-   Copyright The containerd Authors.
-
-   Licensed under the Apache License, Version 2.0 (the "License");
-   you may not use this file except in compliance with the License.
-   You may obtain a copy of the License at
-
-       http://www.apache.org/licenses/LICENSE-2.0
-
-   Unless required by applicable law or agreed to in writing, software
-   distributed under the License is distributed on an "AS IS" BASIS,
-   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-   See the License for the specific language governing permissions and
-   limitations under the License.
-*/
-
-// Package filters defines a syntax and parser that can be used for the
-// filtration of items across the containerd API. The core is built on the
-// concept of protobuf field paths, with quoting.  Several operators allow the
-// user to flexibly select items based on field presence, equality, inequality
-// and regular expressions. Flexible adaptors support working with any type.
-//
-// The syntax is fairly familiar, if you've used container ecosystem
-// projects.  At the core, we base it on the concept of protobuf field
-// paths, augmenting with the ability to quote portions of the field path
-// to match arbitrary labels. These "selectors" come in the following
-// syntax:
-//
-// ```
-// <fieldpath>[<operator><value>]
-// ```
-//
-// A basic example is as follows:
-//
-// ```
-// name==foo
-// ```
-//
-// This would match all objects that have a field `name` with the value
-// `foo`. If we only want to test if the field is present, we can omit the
-// operator. This is most useful for matching labels in containerd. The
-// following will match objects that have the field "labels" and have the
-// label "foo" defined:
-//
-// ```
-// labels.foo
-// ```
-//
-// We also allow for quoting of parts of the field path to allow matching
-// of arbitrary items:
-//
-// ```
-// labels."very complex label"==something
-// ```
-//
-// We also define `!=` and `~=` as operators. The `!=` will match all
-// objects that don't match the value for a field and `~=` will compile the
-// target value as a regular expression and match the field value against that.
-//
-// Selectors can be combined using a comma, such that the resulting
-// selector will require all selectors are matched for the object to match.
-// The following example will match objects that are named `foo` and have
-// the label `bar`:
-//
-// ```
-// name==foo,labels.bar
-// ```
-//
-package filters
-
-import (
-	"regexp"
-
-	"github.com/containerd/containerd/log"
-)
-
-// Filter matches specific resources based the provided filter
-type Filter interface {
-	Match(adaptor Adaptor) bool
-}
-
-// FilterFunc is a function that handles matching with an adaptor
-type FilterFunc func(Adaptor) bool
-
-// Match matches the FilterFunc returning true if the object matches the filter
-func (fn FilterFunc) Match(adaptor Adaptor) bool {
-	return fn(adaptor)
-}
-
-// Always is a filter that always returns true for any type of object
-var Always FilterFunc = func(adaptor Adaptor) bool {
-	return true
-}
-
-// Any allows multiple filters to be matched against the object
-type Any []Filter
-
-// Match returns true if any of the provided filters are true
-func (m Any) Match(adaptor Adaptor) bool {
-	for _, m := range m {
-		if m.Match(adaptor) {
-			return true
-		}
-	}
-
-	return false
-}
-
-// All allows multiple filters to be matched against the object
-type All []Filter
-
-// Match only returns true if all filters match the object
-func (m All) Match(adaptor Adaptor) bool {
-	for _, m := range m {
-		if !m.Match(adaptor) {
-			return false
-		}
-	}
-
-	return true
-}
-
-type operator int
-
-const (
-	operatorPresent = iota
-	operatorEqual
-	operatorNotEqual
-	operatorMatches
-)
-
-func (op operator) String() string {
-	switch op {
-	case operatorPresent:
-		return "?"
-	case operatorEqual:
-		return "=="
-	case operatorNotEqual:
-		return "!="
-	case operatorMatches:
-		return "~="
-	}
-
-	return "unknown"
-}
-
-type selector struct {
-	fieldpath []string
-	operator  operator
-	value     string
-	re        *regexp.Regexp
-}
-
-func (m selector) Match(adaptor Adaptor) bool {
-	value, present := adaptor.Field(m.fieldpath)
-
-	switch m.operator {
-	case operatorPresent:
-		return present
-	case operatorEqual:
-		return present && value == m.value
-	case operatorNotEqual:
-		return value != m.value
-	case operatorMatches:
-		if m.re == nil {
-			r, err := regexp.Compile(m.value)
-			if err != nil {
-				log.L.Errorf("error compiling regexp %q", m.value)
-				return false
-			}
-
-			m.re = r
-		}
-
-		return m.re.MatchString(value)
-	default:
-		return false
-	}
-}

vendor/github.com/containerd/containerd/filters/parser.go

@@ -1,292 +0,0 @@
-/*
-   Copyright The containerd Authors.
-
-   Licensed under the Apache License, Version 2.0 (the "License");
-   you may not use this file except in compliance with the License.
-   You may obtain a copy of the License at
-
-       http://www.apache.org/licenses/LICENSE-2.0
-
-   Unless required by applicable law or agreed to in writing, software
-   distributed under the License is distributed on an "AS IS" BASIS,
-   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-   See the License for the specific language governing permissions and
-   limitations under the License.
-*/
-
-package filters
-
-import (
-	"fmt"
-	"io"
-
-	"github.com/containerd/containerd/errdefs"
-	"github.com/pkg/errors"
-)
-
-/*
-Parse the strings into a filter that may be used with an adaptor.
-
-The filter is made up of zero or more selectors.
-
-The format is a comma separated list of expressions, in the form of
-`<fieldpath><op><value>`, known as selectors. All selectors must match the
-target object for the filter to be true.
-
-We define the operators "==" for equality, "!=" for not equal and "~=" for a
-regular expression. If the operator and value are not present, the matcher will
-test for the presence of a value, as defined by the target object.
-
-The formal grammar is as follows:
-
-selectors := selector ("," selector)*
-selector  := fieldpath (operator value)
-fieldpath := field ('.' field)*
-field     := quoted | [A-Za-z] [A-Za-z0-9_]+
-operator  := "==" | "!=" | "~="
-value     := quoted | [^\s,]+
-quoted    := <go string syntax>
-
-*/
-func Parse(s string) (Filter, error) {
-	// special case empty to match all
-	if s == "" {
-		return Always, nil
-	}
-
-	p := parser{input: s}
-	return p.parse()
-}
-
-// ParseAll parses each filter in ss and returns a filter that will return true
-// if any filter matches the expression.
-//
-// If no filters are provided, the filter will match anything.
-func ParseAll(ss ...string) (Filter, error) {
-	if len(ss) == 0 {
-		return Always, nil
-	}
-
-	var fs []Filter
-	for _, s := range ss {
-		f, err := Parse(s)
-		if err != nil {
-			return nil, errors.Wrap(errdefs.ErrInvalidArgument, err.Error())
-		}
-
-		fs = append(fs, f)
-	}
-
-	return Any(fs), nil
-}
-
-type parser struct {
-	input   string
-	scanner scanner
-}
-
-func (p *parser) parse() (Filter, error) {
-	p.scanner.init(p.input)
-
-	ss, err := p.selectors()
-	if err != nil {
-		return nil, errors.Wrap(err, "filters")
-	}
-
-	return ss, nil
-}
-
-func (p *parser) selectors() (Filter, error) {
-	s, err := p.selector()
-	if err != nil {
-		return nil, err
-	}
-
-	ss := All{s}
-
-loop:
-	for {
-		tok := p.scanner.peek()
-		switch tok {
-		case ',':
-			pos, tok, _ := p.scanner.scan()
-			if tok != tokenSeparator {
-				return nil, p.mkerr(pos, "expected a separator")
-			}
-
-			s, err := p.selector()
-			if err != nil {
-				return nil, err
-			}
-
-			ss = append(ss, s)
-		case tokenEOF:
-			break loop
-		default:
-			return nil, p.mkerr(p.scanner.ppos, "unexpected input: %v", string(tok))
-		}
-	}
-
-	return ss, nil
-}
-
-func (p *parser) selector() (selector, error) {
-	fieldpath, err := p.fieldpath()
-	if err != nil {
-		return selector{}, err
-	}
-
-	switch p.scanner.peek() {
-	case ',', tokenSeparator, tokenEOF:
-		return selector{
-			fieldpath: fieldpath,
-			operator:  operatorPresent,
-		}, nil
-	}
-
-	op, err := p.operator()
-	if err != nil {
-		return selector{}, err
-	}
-
-	var allowAltQuotes bool
-	if op == operatorMatches {
-		allowAltQuotes = true
-	}
-
-	value, err := p.value(allowAltQuotes)
-	if err != nil {
-		if err == io.EOF {
-			return selector{}, io.ErrUnexpectedEOF
-		}
-		return selector{}, err
-	}
-
-	return selector{
-		fieldpath: fieldpath,
-		value:     value,
-		operator:  op,
-	}, nil
-}
-
-func (p *parser) fieldpath() ([]string, error) {
-	f, err := p.field()
-	if err != nil {
-		return nil, err
-	}
-
-	fs := []string{f}
-loop:
-	for {
-		tok := p.scanner.peek() // lookahead to consume field separator
-
-		switch tok {
-		case '.':
-			pos, tok, _ := p.scanner.scan() // consume separator
-			if tok != tokenSeparator {
-				return nil, p.mkerr(pos, "expected a field separator (`.`)")
-			}
-
-			f, err := p.field()
-			if err != nil {
-				return nil, err
-			}
-
-			fs = append(fs, f)
-		default:
-			// let the layer above handle the other bad cases.
-			break loop
-		}
-	}
-
-	return fs, nil
-}
-
-func (p *parser) field() (string, error) {
-	pos, tok, s := p.scanner.scan()
-	switch tok {
-	case tokenField:
-		return s, nil
-	case tokenQuoted:
-		return p.unquote(pos, s, false)
-	case tokenIllegal:
-		return "", p.mkerr(pos, p.scanner.err)
-	}
-
-	return "", p.mkerr(pos, "expected field or quoted")
-}
-
-func (p *parser) operator() (operator, error) {
-	pos, tok, s := p.scanner.scan()
-	switch tok {
-	case tokenOperator:
-		switch s {
-		case "==":
-			return operatorEqual, nil
-		case "!=":
-			return operatorNotEqual, nil
-		case "~=":
-			return operatorMatches, nil
-		default:
-			return 0, p.mkerr(pos, "unsupported operator %q", s)
-		}
-	case tokenIllegal:
-		return 0, p.mkerr(pos, p.scanner.err)
-	}
-
-	return 0, p.mkerr(pos, `expected an operator ("=="|"!="|"~=")`)
-}
-
-func (p *parser) value(allowAltQuotes bool) (string, error) {
-	pos, tok, s := p.scanner.scan()
-
-	switch tok {
-	case tokenValue, tokenField:
-		return s, nil
-	case tokenQuoted:
-		return p.unquote(pos, s, allowAltQuotes)
-	case tokenIllegal:
-		return "", p.mkerr(pos, p.scanner.err)
-	}
-
-	return "", p.mkerr(pos, "expected value or quoted")
-}
-
-func (p *parser) unquote(pos int, s string, allowAlts bool) (string, error) {
-	if !allowAlts && s[0] != '\'' && s[0] != '"' {
-		return "", p.mkerr(pos, "invalid quote encountered")
-	}
-
-	uq, err := unquote(s)
-	if err != nil {
-		return "", p.mkerr(pos, "unquoting failed: %v", err)
-	}
-
-	return uq, nil
-}
-
-type parseError struct {
-	input string
-	pos   int
-	msg   string
-}
-
-func (pe parseError) Error() string {
-	if pe.pos < len(pe.input) {
-		before := pe.input[:pe.pos]
-		location := pe.input[pe.pos : pe.pos+1] // need to handle end
-		after := pe.input[pe.pos+1:]
-
-		return fmt.Sprintf("[%s >|%s|< %s]: %v", before, location, after, pe.msg)
-	}
-
-	return fmt.Sprintf("[%s]: %v", pe.input, pe.msg)
-}
-
-func (p *parser) mkerr(pos int, format string, args ...interface{}) error {
-	return errors.Wrap(parseError{
-		input: p.input,
-		pos:   pos,
-		msg:   fmt.Sprintf(format, args...),
-	}, "parse error")
-}

vendor/github.com/containerd/containerd/filters/quote.go

@@ -1,253 +0,0 @@
-/*
-   Copyright The containerd Authors.
-
-   Licensed under the Apache License, Version 2.0 (the "License");
-   you may not use this file except in compliance with the License.
-   You may obtain a copy of the License at
-
-       http://www.apache.org/licenses/LICENSE-2.0
-
-   Unless required by applicable law or agreed to in writing, software
-   distributed under the License is distributed on an "AS IS" BASIS,
-   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-   See the License for the specific language governing permissions and
-   limitations under the License.
-*/
-
-package filters
-
-import (
-	"unicode/utf8"
-
-	"github.com/pkg/errors"
-)
-
-// NOTE(stevvooe): Most of this code in this file is copied from the stdlib
-// strconv package and modified to be able to handle quoting with `/` and `|`
-// as delimiters.  The copyright is held by the Go authors.
-
-var errQuoteSyntax = errors.New("quote syntax error")
-
-// UnquoteChar decodes the first character or byte in the escaped string
-// or character literal represented by the string s.
-// It returns four values:
-//
-//	1) value, the decoded Unicode code point or byte value;
-//	2) multibyte, a boolean indicating whether the decoded character requires a multibyte UTF-8 representation;
-//	3) tail, the remainder of the string after the character; and
-//	4) an error that will be nil if the character is syntactically valid.
-//
-// The second argument, quote, specifies the type of literal being parsed
-// and therefore which escaped quote character is permitted.
-// If set to a single quote, it permits the sequence \' and disallows unescaped '.
-// If set to a double quote, it permits \" and disallows unescaped ".
-// If set to zero, it does not permit either escape and allows both quote characters to appear unescaped.
-//
-// This is from Go strconv package, modified to support `|` and `/` as double
-// quotes for use with regular expressions.
-func unquoteChar(s string, quote byte) (value rune, multibyte bool, tail string, err error) {
-	// easy cases
-	switch c := s[0]; {
-	case c == quote && (quote == '\'' || quote == '"' || quote == '/' || quote == '|'):
-		err = errQuoteSyntax
-		return
-	case c >= utf8.RuneSelf:
-		r, size := utf8.DecodeRuneInString(s)
-		return r, true, s[size:], nil
-	case c != '\\':
-		return rune(s[0]), false, s[1:], nil
-	}
-
-	// hard case: c is backslash
-	if len(s) <= 1 {
-		err = errQuoteSyntax
-		return
-	}
-	c := s[1]
-	s = s[2:]
-
-	switch c {
-	case 'a':
-		value = '\a'
-	case 'b':
-		value = '\b'
-	case 'f':
-		value = '\f'
-	case 'n':
-		value = '\n'
-	case 'r':
-		value = '\r'
-	case 't':
-		value = '\t'
-	case 'v':
-		value = '\v'
-	case 'x', 'u', 'U':
-		n := 0
-		switch c {
-		case 'x':
-			n = 2
-		case 'u':
-			n = 4
-		case 'U':
-			n = 8
-		}
-		var v rune
-		if len(s) < n {
-			err = errQuoteSyntax
-			return
-		}
-		for j := 0; j < n; j++ {
-			x, ok := unhex(s[j])
-			if !ok {
-				err = errQuoteSyntax
-				return
-			}
-			v = v<<4 | x
-		}
-		s = s[n:]
-		if c == 'x' {
-			// single-byte string, possibly not UTF-8
-			value = v
-			break
-		}
-		if v > utf8.MaxRune {
-			err = errQuoteSyntax
-			return
-		}
-		value = v
-		multibyte = true
-	case '0', '1', '2', '3', '4', '5', '6', '7':
-		v := rune(c) - '0'
-		if len(s) < 2 {
-			err = errQuoteSyntax
-			return
-		}
-		for j := 0; j < 2; j++ { // one digit already; two more
-			x := rune(s[j]) - '0'
-			if x < 0 || x > 7 {
-				err = errQuoteSyntax
-				return
-			}
-			v = (v << 3) | x
-		}
-		s = s[2:]
-		if v > 255 {
-			err = errQuoteSyntax
-			return
-		}
-		value = v
-	case '\\':
-		value = '\\'
-	case '\'', '"', '|', '/':
-		if c != quote {
-			err = errQuoteSyntax
-			return
-		}
-		value = rune(c)
-	default:
-		err = errQuoteSyntax
-		return
-	}
-	tail = s
-	return
-}
-
-// unquote interprets s as a single-quoted, double-quoted,
-// or backquoted Go string literal, returning the string value
-// that s quotes.  (If s is single-quoted, it would be a Go
-// character literal; Unquote returns the corresponding
-// one-character string.)
-//
-// This is modified from the standard library to support `|` and `/` as quote
-// characters for use with regular expressions.
-func unquote(s string) (string, error) {
-	n := len(s)
-	if n < 2 {
-		return "", errQuoteSyntax
-	}
-	quote := s[0]
-	if quote != s[n-1] {
-		return "", errQuoteSyntax
-	}
-	s = s[1 : n-1]
-
-	if quote == '`' {
-		if contains(s, '`') {
-			return "", errQuoteSyntax
-		}
-		if contains(s, '\r') {
-			// -1 because we know there is at least one \r to remove.
-			buf := make([]byte, 0, len(s)-1)
-			for i := 0; i < len(s); i++ {
-				if s[i] != '\r' {
-					buf = append(buf, s[i])
-				}
-			}
-			return string(buf), nil
-		}
-		return s, nil
-	}
-	if quote != '"' && quote != '\'' && quote != '|' && quote != '/' {
-		return "", errQuoteSyntax
-	}
-	if contains(s, '\n') {
-		return "", errQuoteSyntax
-	}
-
-	// Is it trivial?  Avoid allocation.
-	if !contains(s, '\\') && !contains(s, quote) {
-		switch quote {
-		case '"', '/', '|': // pipe and slash are treated like double quote
-			return s, nil
-		case '\'':
-			r, size := utf8.DecodeRuneInString(s)
-			if size == len(s) && (r != utf8.RuneError || size != 1) {
-				return s, nil
-			}
-		}
-	}
-
-	var runeTmp [utf8.UTFMax]byte
-	buf := make([]byte, 0, 3*len(s)/2) // Try to avoid more allocations.
-	for len(s) > 0 {
-		c, multibyte, ss, err := unquoteChar(s, quote)
-		if err != nil {
-			return "", err
-		}
-		s = ss
-		if c < utf8.RuneSelf || !multibyte {
-			buf = append(buf, byte(c))
-		} else {
-			n := utf8.EncodeRune(runeTmp[:], c)
-			buf = append(buf, runeTmp[:n]...)
-		}
-		if quote == '\'' && len(s) != 0 {
-			// single-quoted must be single character
-			return "", errQuoteSyntax
-		}
-	}
-	return string(buf), nil
-}
-
-// contains reports whether the string contains the byte c.
-func contains(s string, c byte) bool {
-	for i := 0; i < len(s); i++ {
-		if s[i] == c {
-			return true
-		}
-	}
-	return false
-}
-
-func unhex(b byte) (v rune, ok bool) {
-	c := rune(b)
-	switch {
-	case '0' <= c && c <= '9':
-		return c - '0', true
-	case 'a' <= c && c <= 'f':
-		return c - 'a' + 10, true
-	case 'A' <= c && c <= 'F':
-		return c - 'A' + 10, true
-	}
-	return
-}

vendor/github.com/containerd/containerd/filters/scanner.go

@@ -1,297 +0,0 @@
-/*
-   Copyright The containerd Authors.
-
-   Licensed under the Apache License, Version 2.0 (the "License");
-   you may not use this file except in compliance with the License.
-   You may obtain a copy of the License at
-
-       http://www.apache.org/licenses/LICENSE-2.0
-
-   Unless required by applicable law or agreed to in writing, software
-   distributed under the License is distributed on an "AS IS" BASIS,
-   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-   See the License for the specific language governing permissions and
-   limitations under the License.
-*/
-
-package filters
-
-import (
-	"unicode"
-	"unicode/utf8"
-)
-
-const (
-	tokenEOF = -(iota + 1)
-	tokenQuoted
-	tokenValue
-	tokenField
-	tokenSeparator
-	tokenOperator
-	tokenIllegal
-)
-
-type token rune
-
-func (t token) String() string {
-	switch t {
-	case tokenEOF:
-		return "EOF"
-	case tokenQuoted:
-		return "Quoted"
-	case tokenValue:
-		return "Value"
-	case tokenField:
-		return "Field"
-	case tokenSeparator:
-		return "Separator"
-	case tokenOperator:
-		return "Operator"
-	case tokenIllegal:
-		return "Illegal"
-	}
-
-	return string(t)
-}
-
-func (t token) GoString() string {
-	return "token" + t.String()
-}
-
-type scanner struct {
-	input string
-	pos   int
-	ppos  int // bounds the current rune in the string
-	value bool
-	err   string
-}
-
-func (s *scanner) init(input string) {
-	s.input = input
-	s.pos = 0
-	s.ppos = 0
-}
-
-func (s *scanner) next() rune {
-	if s.pos >= len(s.input) {
-		return tokenEOF
-	}
-	s.pos = s.ppos
-
-	r, w := utf8.DecodeRuneInString(s.input[s.ppos:])
-	s.ppos += w
-	if r == utf8.RuneError {
-		if w > 0 {
-			s.error("rune error")
-			return tokenIllegal
-		}
-		return tokenEOF
-	}
-
-	if r == 0 {
-		s.error("unexpected null")
-		return tokenIllegal
-	}
-
-	return r
-}
-
-func (s *scanner) peek() rune {
-	pos := s.pos
-	ppos := s.ppos
-	ch := s.next()
-	s.pos = pos
-	s.ppos = ppos
-	return ch
-}
-
-func (s *scanner) scan() (nextp int, tk token, text string) {
-	var (
-		ch  = s.next()
-		pos = s.pos
-	)
-
-chomp:
-	switch {
-	case ch == tokenEOF:
-	case ch == tokenIllegal:
-	case isQuoteRune(ch):
-		if !s.scanQuoted(ch) {
-			return pos, tokenIllegal, s.input[pos:s.ppos]
-		}
-		return pos, tokenQuoted, s.input[pos:s.ppos]
-	case isSeparatorRune(ch):
-		s.value = false
-		return pos, tokenSeparator, s.input[pos:s.ppos]
-	case isOperatorRune(ch):
-		s.scanOperator()
-		s.value = true
-		return pos, tokenOperator, s.input[pos:s.ppos]
-	case unicode.IsSpace(ch):
-		// chomp
-		ch = s.next()
-		pos = s.pos
-		goto chomp
-	case s.value:
-		s.scanValue()
-		s.value = false
-		return pos, tokenValue, s.input[pos:s.ppos]
-	case isFieldRune(ch):
-		s.scanField()
-		return pos, tokenField, s.input[pos:s.ppos]
-	}
-
-	return s.pos, token(ch), ""
-}
-
-func (s *scanner) scanField() {
-	for {
-		ch := s.peek()
-		if !isFieldRune(ch) {
-			break
-		}
-		s.next()
-	}
-}
-
-func (s *scanner) scanOperator() {
-	for {
-		ch := s.peek()
-		switch ch {
-		case '=', '!', '~':
-			s.next()
-		default:
-			return
-		}
-	}
-}
-
-func (s *scanner) scanValue() {
-	for {
-		ch := s.peek()
-		if !isValueRune(ch) {
-			break
-		}
-		s.next()
-	}
-}
-
-func (s *scanner) scanQuoted(quote rune) bool {
-	var illegal bool
-	ch := s.next() // read character after quote
-	for ch != quote {
-		if ch == '\n' || ch < 0 {
-			s.error("quoted literal not terminated")
-			return false
-		}
-		if ch == '\\' {
-			var legal bool
-			ch, legal = s.scanEscape(quote)
-			if !legal {
-				illegal = true
-			}
-		} else {
-			ch = s.next()
-		}
-	}
-	return !illegal
-}
-
-func (s *scanner) scanEscape(quote rune) (ch rune, legal bool) {
-	ch = s.next() // read character after '/'
-	switch ch {
-	case 'a', 'b', 'f', 'n', 'r', 't', 'v', '\\', quote:
-		// nothing to do
-		ch = s.next()
-		legal = true
-	case '0', '1', '2', '3', '4', '5', '6', '7':
-		ch, legal = s.scanDigits(ch, 8, 3)
-	case 'x':
-		ch, legal = s.scanDigits(s.next(), 16, 2)
-	case 'u':
-		ch, legal = s.scanDigits(s.next(), 16, 4)
-	case 'U':
-		ch, legal = s.scanDigits(s.next(), 16, 8)
-	default:
-		s.error("illegal escape sequence")
-	}
-	return
-}
-
-func (s *scanner) scanDigits(ch rune, base, n int) (rune, bool) {
-	for n > 0 && digitVal(ch) < base {
-		ch = s.next()
-		n--
-	}
-	if n > 0 {
-		s.error("illegal numeric escape sequence")
-		return ch, false
-	}
-	return ch, true
-}
-
-func (s *scanner) error(msg string) {
-	if s.err == "" {
-		s.err = msg
-	}
-}
-
-func digitVal(ch rune) int {
-	switch {
-	case '0' <= ch && ch <= '9':
-		return int(ch - '0')
-	case 'a' <= ch && ch <= 'f':
-		return int(ch - 'a' + 10)
-	case 'A' <= ch && ch <= 'F':
-		return int(ch - 'A' + 10)
-	}
-	return 16 // larger than any legal digit val
-}
-
-func isFieldRune(r rune) bool {
-	return (r == '_' || isAlphaRune(r) || isDigitRune(r))
-}
-
-func isAlphaRune(r rune) bool {
-	return r >= 'A' && r <= 'Z' || r >= 'a' && r <= 'z'
-}
-
-func isDigitRune(r rune) bool {
-	return r >= '0' && r <= '9'
-}
-
-func isOperatorRune(r rune) bool {
-	switch r {
-	case '=', '!', '~':
-		return true
-	}
-
-	return false
-}
-
-func isQuoteRune(r rune) bool {
-	switch r {
-	case '/', '|', '"': // maybe add single quoting?
-		return true
-	}
-
-	return false
-}
-
-func isSeparatorRune(r rune) bool {
-	switch r {
-	case ',', '.':
-		return true
-	}
-
-	return false
-}
-
-func isValueRune(r rune) bool {
-	return r != ',' && !unicode.IsSpace(r) &&
-		(unicode.IsLetter(r) ||
-			unicode.IsDigit(r) ||
-			unicode.IsNumber(r) ||
-			unicode.IsGraphic(r) ||
-			unicode.IsPunct(r))
-}

vendor/github.com/containerd/containerd/identifiers/validate.go

@@ -1,73 +0,0 @@
-/*
-   Copyright The containerd Authors.
-
-   Licensed under the Apache License, Version 2.0 (the "License");
-   you may not use this file except in compliance with the License.
-   You may obtain a copy of the License at
-
-       http://www.apache.org/licenses/LICENSE-2.0
-
-   Unless required by applicable law or agreed to in writing, software
-   distributed under the License is distributed on an "AS IS" BASIS,
-   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-   See the License for the specific language governing permissions and
-   limitations under the License.
-*/
-
-// Package identifiers provides common validation for identifiers and keys
-// across containerd.
-//
-// Identifiers in containerd must be a alphanumeric, allowing limited
-// underscores, dashes and dots.
-//
-// While the character set may be expanded in the future, identifiers
-// are guaranteed to be safely used as filesystem path components.
-package identifiers
-
-import (
-	"regexp"
-
-	"github.com/containerd/containerd/errdefs"
-	"github.com/pkg/errors"
-)
-
-const (
-	maxLength  = 76
-	alphanum   = `[A-Za-z0-9]+`
-	separators = `[._-]`
-)
-
-var (
-	// identifierRe defines the pattern for valid identifiers.
-	identifierRe = regexp.MustCompile(reAnchor(alphanum + reGroup(separators+reGroup(alphanum)) + "*"))
-)
-
-// Validate returns nil if the string s is a valid identifier.
-//
-// identifiers are similar to the domain name rules according to RFC 1035, section 2.3.1. However
-// rules in this package are relaxed to allow numerals to follow period (".") and mixed case is
-// allowed.
-//
-// In general identifiers that pass this validation should be safe for use as filesystem path components.
-func Validate(s string) error {
-	if len(s) == 0 {
-		return errors.Wrapf(errdefs.ErrInvalidArgument, "identifier must not be empty")
-	}
-
-	if len(s) > maxLength {
-		return errors.Wrapf(errdefs.ErrInvalidArgument, "identifier %q greater than maximum length (%d characters)", s, maxLength)
-	}
-
-	if !identifierRe.MatchString(s) {
-		return errors.Wrapf(errdefs.ErrInvalidArgument, "identifier %q must match %v", s, identifierRe)
-	}
-	return nil
-}
-
-func reGroup(s string) string {
-	return `(?:` + s + `)`
-}
-
-func reAnchor(s string) string {
-	return `^` + s + `$`
-}

vendor/github.com/containerd/containerd/log/context.go

@@ -1,68 +0,0 @@
-/*
-   Copyright The containerd Authors.
-
-   Licensed under the Apache License, Version 2.0 (the "License");
-   you may not use this file except in compliance with the License.
-   You may obtain a copy of the License at
-
-       http://www.apache.org/licenses/LICENSE-2.0
-
-   Unless required by applicable law or agreed to in writing, software
-   distributed under the License is distributed on an "AS IS" BASIS,
-   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-   See the License for the specific language governing permissions and
-   limitations under the License.
-*/
-
-package log
-
-import (
-	"context"
-
-	"github.com/sirupsen/logrus"
-)
-
-var (
-	// G is an alias for GetLogger.
-	//
-	// We may want to define this locally to a package to get package tagged log
-	// messages.
-	G = GetLogger
-
-	// L is an alias for the standard logger.
-	L = logrus.NewEntry(logrus.StandardLogger())
-)
-
-type (
-	loggerKey struct{}
-)
-
-const (
-	// RFC3339NanoFixed is time.RFC3339Nano with nanoseconds padded using zeros to
-	// ensure the formatted time is always the same number of characters.
-	RFC3339NanoFixed = "2006-01-02T15:04:05.000000000Z07:00"
-
-	// TextFormat represents the text logging format
-	TextFormat = "text"
-
-	// JSONFormat represents the JSON logging format
-	JSONFormat = "json"
-)
-
-// WithLogger returns a new context with the provided logger. Use in
-// combination with logger.WithField(s) for great effect.
-func WithLogger(ctx context.Context, logger *logrus.Entry) context.Context {
-	return context.WithValue(ctx, loggerKey{}, logger)
-}
-
-// GetLogger retrieves the current logger from the context. If no logger is
-// available, the default logger is returned.
-func GetLogger(ctx context.Context) *logrus.Entry {
-	logger := ctx.Value(loggerKey{})
-
-	if logger == nil {
-		return L
-	}
-
-	return logger.(*logrus.Entry)
-}

vendor/github.com/containerd/containerd/namespaces/context.go

@@ -1,78 +0,0 @@
-/*
-   Copyright The containerd Authors.
-
-   Licensed under the Apache License, Version 2.0 (the "License");
-   you may not use this file except in compliance with the License.
-   You may obtain a copy of the License at
-
-       http://www.apache.org/licenses/LICENSE-2.0
-
-   Unless required by applicable law or agreed to in writing, software
-   distributed under the License is distributed on an "AS IS" BASIS,
-   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-   See the License for the specific language governing permissions and
-   limitations under the License.
-*/
-
-package namespaces
-
-import (
-	"context"
-	"os"
-
-	"github.com/containerd/containerd/errdefs"
-	"github.com/containerd/containerd/identifiers"
-	"github.com/pkg/errors"
-)
-
-const (
-	// NamespaceEnvVar is the environment variable key name
-	NamespaceEnvVar = "CONTAINERD_NAMESPACE"
-	// Default is the name of the default namespace
-	Default = "default"
-)
-
-type namespaceKey struct{}
-
-// WithNamespace sets a given namespace on the context
-func WithNamespace(ctx context.Context, namespace string) context.Context {
-	ctx = context.WithValue(ctx, namespaceKey{}, namespace) // set our key for namespace
-	// also store on the grpc and ttrpc headers so it gets picked up by any clients that
-	// are using this.
-	return withTTRPCNamespaceHeader(withGRPCNamespaceHeader(ctx, namespace), namespace)
-}
-
-// NamespaceFromEnv uses the namespace defined in CONTAINERD_NAMESPACE or
-// default
-func NamespaceFromEnv(ctx context.Context) context.Context {
-	namespace := os.Getenv(NamespaceEnvVar)
-	if namespace == "" {
-		namespace = Default
-	}
-	return WithNamespace(ctx, namespace)
-}
-
-// Namespace returns the namespace from the context.
-//
-// The namespace is not guaranteed to be valid.
-func Namespace(ctx context.Context) (string, bool) {
-	namespace, ok := ctx.Value(namespaceKey{}).(string)
-	if !ok {
-		if namespace, ok = fromGRPCHeader(ctx); !ok {
-			return fromTTRPCHeader(ctx)
-		}
-	}
-	return namespace, ok
-}
-
-// NamespaceRequired returns the valid namespace from the context or an error.
-func NamespaceRequired(ctx context.Context) (string, error) {
-	namespace, ok := Namespace(ctx)
-	if !ok || namespace == "" {
-		return "", errors.Wrapf(errdefs.ErrFailedPrecondition, "namespace is required")
-	}
-	if err := identifiers.Validate(namespace); err != nil {
-		return "", errors.Wrap(err, "namespace validation")
-	}
-	return namespace, nil
-}

vendor/github.com/containerd/containerd/namespaces/grpc.go

@@ -1,61 +0,0 @@
-/*
-   Copyright The containerd Authors.
-
-   Licensed under the Apache License, Version 2.0 (the "License");
-   you may not use this file except in compliance with the License.
-   You may obtain a copy of the License at
-
-       http://www.apache.org/licenses/LICENSE-2.0
-
-   Unless required by applicable law or agreed to in writing, software
-   distributed under the License is distributed on an "AS IS" BASIS,
-   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-   See the License for the specific language governing permissions and
-   limitations under the License.
-*/
-
-package namespaces
-
-import (
-	"context"
-
-	"google.golang.org/grpc/metadata"
-)
-
-const (
-	// GRPCHeader defines the header name for specifying a containerd namespace.
-	GRPCHeader = "containerd-namespace"
-)
-
-// NOTE(stevvooe): We can stub this file out if we don't want a grpc dependency here.
-
-func withGRPCNamespaceHeader(ctx context.Context, namespace string) context.Context {
-	// also store on the grpc headers so it gets picked up by any clients that
-	// are using this.
-	nsheader := metadata.Pairs(GRPCHeader, namespace)
-	md, ok := metadata.FromOutgoingContext(ctx) // merge with outgoing context.
-	if !ok {
-		md = nsheader
-	} else {
-		// order ensures the latest is first in this list.
-		md = metadata.Join(nsheader, md)
-	}
-
-	return metadata.NewOutgoingContext(ctx, md)
-}
-
-func fromGRPCHeader(ctx context.Context) (string, bool) {
-	// try to extract for use in grpc servers.
-	md, ok := metadata.FromIncomingContext(ctx)
-	if !ok {
-		// TODO(stevvooe): Check outgoing context?
-		return "", false
-	}
-
-	values := md[GRPCHeader]
-	if len(values) == 0 {
-		return "", false
-	}
-
-	return values[0], true
-}

vendor/github.com/containerd/containerd/namespaces/store.go

@@ -1,46 +0,0 @@
-/*
-   Copyright The containerd Authors.
-
-   Licensed under the Apache License, Version 2.0 (the "License");
-   you may not use this file except in compliance with the License.
-   You may obtain a copy of the License at
-
-       http://www.apache.org/licenses/LICENSE-2.0
-
-   Unless required by applicable law or agreed to in writing, software
-   distributed under the License is distributed on an "AS IS" BASIS,
-   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-   See the License for the specific language governing permissions and
-   limitations under the License.
-*/
-
-package namespaces
-
-import "context"
-
-// Store provides introspection about namespaces.
-//
-// Note that these are slightly different than other objects, which are record
-// oriented. A namespace is really just a name and a set of labels. Objects
-// that belong to a namespace are returned when the namespace is assigned to a
-// given context.
-//
-//
-type Store interface {
-	Create(ctx context.Context, namespace string, labels map[string]string) error
-	Labels(ctx context.Context, namespace string) (map[string]string, error)
-	SetLabel(ctx context.Context, namespace, key, value string) error
-	List(ctx context.Context) ([]string, error)
-
-	// Delete removes the namespace. The namespace must be empty to be deleted.
-	Delete(ctx context.Context, namespace string, opts ...DeleteOpts) error
-}
-
-// DeleteInfo specifies information for the deletion of a namespace
-type DeleteInfo struct {
-	// Name of the namespace
-	Name string
-}
-
-// DeleteOpts allows the caller to set options for namespace deletion
-type DeleteOpts func(context.Context, *DeleteInfo) error

vendor/github.com/containerd/containerd/namespaces/ttrpc.go

@@ -1,51 +0,0 @@
-/*
-   Copyright The containerd Authors.
-
-   Licensed under the Apache License, Version 2.0 (the "License");
-   you may not use this file except in compliance with the License.
-   You may obtain a copy of the License at
-
-       http://www.apache.org/licenses/LICENSE-2.0
-
-   Unless required by applicable law or agreed to in writing, software
-   distributed under the License is distributed on an "AS IS" BASIS,
-   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-   See the License for the specific language governing permissions and
-   limitations under the License.
-*/
-
-package namespaces
-
-import (
-	"context"
-
-	"github.com/containerd/ttrpc"
-)
-
-const (
-	// TTRPCHeader defines the header name for specifying a containerd namespace
-	TTRPCHeader = "containerd-namespace-ttrpc"
-)
-
-func copyMetadata(src ttrpc.MD) ttrpc.MD {
-	md := ttrpc.MD{}
-	for k, v := range src {
-		md[k] = append(md[k], v...)
-	}
-	return md
-}
-
-func withTTRPCNamespaceHeader(ctx context.Context, namespace string) context.Context {
-	md, ok := ttrpc.GetMetadata(ctx)
-	if !ok {
-		md = ttrpc.MD{}
-	} else {
-		md = copyMetadata(md)
-	}
-	md.Set(TTRPCHeader, namespace)
-	return ttrpc.WithMetadata(ctx, md)
-}
-
-func fromTTRPCHeader(ctx context.Context) (string, bool) {
-	return ttrpc.GetMetadataValue(ctx, TTRPCHeader)
-}

vendor/github.com/containerd/containerd/plugin/context.go

@@ -1,146 +0,0 @@
-/*
-   Copyright The containerd Authors.
-
-   Licensed under the Apache License, Version 2.0 (the "License");
-   you may not use this file except in compliance with the License.
-   You may obtain a copy of the License at
-
-       http://www.apache.org/licenses/LICENSE-2.0
-
-   Unless required by applicable law or agreed to in writing, software
-   distributed under the License is distributed on an "AS IS" BASIS,
-   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-   See the License for the specific language governing permissions and
-   limitations under the License.
-*/
-
-package plugin
-
-import (
-	"context"
-	"path/filepath"
-
-	"github.com/containerd/containerd/errdefs"
-	"github.com/containerd/containerd/events/exchange"
-	ocispec "github.com/opencontainers/image-spec/specs-go/v1"
-	"github.com/pkg/errors"
-)
-
-// InitContext is used for plugin inititalization
-type InitContext struct {
-	Context      context.Context
-	Root         string
-	State        string
-	Config       interface{}
-	Address      string
-	TTRPCAddress string
-	Events       *exchange.Exchange
-
-	Meta *Meta // plugins can fill in metadata at init.
-
-	plugins *Set
-}
-
-// NewContext returns a new plugin InitContext
-func NewContext(ctx context.Context, r *Registration, plugins *Set, root, state string) *InitContext {
-	return &InitContext{
-		Context: ctx,
-		Root:    filepath.Join(root, r.URI()),
-		State:   filepath.Join(state, r.URI()),
-		Meta: &Meta{
-			Exports: map[string]string{},
-		},
-		plugins: plugins,
-	}
-}
-
-// Get returns the first plugin by its type
-func (i *InitContext) Get(t Type) (interface{}, error) {
-	return i.plugins.Get(t)
-}
-
-// Meta contains information gathered from the registration and initialization
-// process.
-type Meta struct {
-	Platforms    []ocispec.Platform // platforms supported by plugin
-	Exports      map[string]string  // values exported by plugin
-	Capabilities []string           // feature switches for plugin
-}
-
-// Plugin represents an initialized plugin, used with an init context.
-type Plugin struct {
-	Registration *Registration // registration, as initialized
-	Config       interface{}   // config, as initialized
-	Meta         *Meta
-
-	instance interface{}
-	err      error // will be set if there was an error initializing the plugin
-}
-
-// Err returns the errors during initialization.
-// returns nil if not error was encountered
-func (p *Plugin) Err() error {
-	return p.err
-}
-
-// Instance returns the instance and any initialization error of the plugin
-func (p *Plugin) Instance() (interface{}, error) {
-	return p.instance, p.err
-}
-
-// Set defines a plugin collection, used with InitContext.
-//
-// This maintains ordering and unique indexing over the set.
-//
-// After iteratively instantiating plugins, this set should represent, the
-// ordered, initialization set of plugins for a containerd instance.
-type Set struct {
-	ordered     []*Plugin // order of initialization
-	byTypeAndID map[Type]map[string]*Plugin
-}
-
-// NewPluginSet returns an initialized plugin set
-func NewPluginSet() *Set {
-	return &Set{
-		byTypeAndID: make(map[Type]map[string]*Plugin),
-	}
-}
-
-// Add a plugin to the set
-func (ps *Set) Add(p *Plugin) error {
-	if byID, typeok := ps.byTypeAndID[p.Registration.Type]; !typeok {
-		ps.byTypeAndID[p.Registration.Type] = map[string]*Plugin{
-			p.Registration.ID: p,
-		}
-	} else if _, idok := byID[p.Registration.ID]; !idok {
-		byID[p.Registration.ID] = p
-	} else {
-		return errors.Wrapf(errdefs.ErrAlreadyExists, "plugin %v already initialized", p.Registration.URI())
-	}
-
-	ps.ordered = append(ps.ordered, p)
-	return nil
-}
-
-// Get returns the first plugin by its type
-func (ps *Set) Get(t Type) (interface{}, error) {
-	for _, v := range ps.byTypeAndID[t] {
-		return v.Instance()
-	}
-	return nil, errors.Wrapf(errdefs.ErrNotFound, "no plugins registered for %s", t)
-}
-
-// GetAll plugins in the set
-func (i *InitContext) GetAll() []*Plugin {
-	return i.plugins.ordered
-}
-
-// GetByType returns all plugins with the specific type.
-func (i *InitContext) GetByType(t Type) (map[string]*Plugin, error) {
-	p, ok := i.plugins.byTypeAndID[t]
-	if !ok {
-		return nil, errors.Wrapf(errdefs.ErrNotFound, "no plugins registered for %s", t)
-	}
-
-	return p, nil
-}

vendor/github.com/containerd/containerd/plugin/plugin.go

@@ -1,239 +0,0 @@
-/*
-   Copyright The containerd Authors.
-
-   Licensed under the Apache License, Version 2.0 (the "License");
-   you may not use this file except in compliance with the License.
-   You may obtain a copy of the License at
-
-       http://www.apache.org/licenses/LICENSE-2.0
-
-   Unless required by applicable law or agreed to in writing, software
-   distributed under the License is distributed on an "AS IS" BASIS,
-   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-   See the License for the specific language governing permissions and
-   limitations under the License.
-*/
-
-package plugin
-
-import (
-	"fmt"
-	"sync"
-
-	"github.com/containerd/ttrpc"
-	"github.com/pkg/errors"
-	"google.golang.org/grpc"
-)
-
-var (
-	// ErrNoType is returned when no type is specified
-	ErrNoType = errors.New("plugin: no type")
-	// ErrNoPluginID is returned when no id is specified
-	ErrNoPluginID = errors.New("plugin: no id")
-	// ErrIDRegistered is returned when a duplicate id is already registered
-	ErrIDRegistered = errors.New("plugin: id already registered")
-	// ErrSkipPlugin is used when a plugin is not initialized and should not be loaded,
-	// this allows the plugin loader differentiate between a plugin which is configured
-	// not to load and one that fails to load.
-	ErrSkipPlugin = errors.New("skip plugin")
-
-	// ErrInvalidRequires will be thrown if the requirements for a plugin are
-	// defined in an invalid manner.
-	ErrInvalidRequires = errors.New("invalid requires")
-)
-
-// IsSkipPlugin returns true if the error is skipping the plugin
-func IsSkipPlugin(err error) bool {
-	return errors.Is(err, ErrSkipPlugin)
-}
-
-// Type is the type of the plugin
-type Type string
-
-func (t Type) String() string { return string(t) }
-
-const (
-	// InternalPlugin implements an internal plugin to containerd
-	InternalPlugin Type = "io.containerd.internal.v1"
-	// RuntimePlugin implements a runtime
-	RuntimePlugin Type = "io.containerd.runtime.v1"
-	// RuntimePluginV2 implements a runtime v2
-	RuntimePluginV2 Type = "io.containerd.runtime.v2"
-	// ServicePlugin implements a internal service
-	ServicePlugin Type = "io.containerd.service.v1"
-	// GRPCPlugin implements a grpc service
-	GRPCPlugin Type = "io.containerd.grpc.v1"
-	// SnapshotPlugin implements a snapshotter
-	SnapshotPlugin Type = "io.containerd.snapshotter.v1"
-	// TaskMonitorPlugin implements a task monitor
-	TaskMonitorPlugin Type = "io.containerd.monitor.v1"
-	// DiffPlugin implements a differ
-	DiffPlugin Type = "io.containerd.differ.v1"
-	// MetadataPlugin implements a metadata store
-	MetadataPlugin Type = "io.containerd.metadata.v1"
-	// ContentPlugin implements a content store
-	ContentPlugin Type = "io.containerd.content.v1"
-	// GCPlugin implements garbage collection policy
-	GCPlugin Type = "io.containerd.gc.v1"
-)
-
-const (
-	// RuntimeLinuxV1 is the legacy linux runtime
-	RuntimeLinuxV1 = "io.containerd.runtime.v1.linux"
-	// RuntimeRuncV1 is the runc runtime that supports a single container
-	RuntimeRuncV1 = "io.containerd.runc.v1"
-	// RuntimeRuncV2 is the runc runtime that supports multiple containers per shim
-	RuntimeRuncV2 = "io.containerd.runc.v2"
-)
-
-// Registration contains information for registering a plugin
-type Registration struct {
-	// Type of the plugin
-	Type Type
-	// ID of the plugin
-	ID string
-	// Config specific to the plugin
-	Config interface{}
-	// Requires is a list of plugins that the registered plugin requires to be available
-	Requires []Type
-
-	// InitFn is called when initializing a plugin. The registration and
-	// context are passed in. The init function may modify the registration to
-	// add exports, capabilities and platform support declarations.
-	InitFn func(*InitContext) (interface{}, error)
-	// Disable the plugin from loading
-	Disable bool
-}
-
-// Init the registered plugin
-func (r *Registration) Init(ic *InitContext) *Plugin {
-	p, err := r.InitFn(ic)
-	return &Plugin{
-		Registration: r,
-		Config:       ic.Config,
-		Meta:         ic.Meta,
-		instance:     p,
-		err:          err,
-	}
-}
-
-// URI returns the full plugin URI
-func (r *Registration) URI() string {
-	return fmt.Sprintf("%s.%s", r.Type, r.ID)
-}
-
-// Service allows GRPC services to be registered with the underlying server
-type Service interface {
-	Register(*grpc.Server) error
-}
-
-// TTRPCService allows TTRPC services to be registered with the underlying server
-type TTRPCService interface {
-	RegisterTTRPC(*ttrpc.Server) error
-}
-
-// TCPService allows GRPC services to be registered with the underlying tcp server
-type TCPService interface {
-	RegisterTCP(*grpc.Server) error
-}
-
-var register = struct {
-	sync.RWMutex
-	r []*Registration
-}{}
-
-// Load loads all plugins at the provided path into containerd
-func Load(path string) (err error) {
-	defer func() {
-		if v := recover(); v != nil {
-			rerr, ok := v.(error)
-			if !ok {
-				rerr = fmt.Errorf("%s", v)
-			}
-			err = rerr
-		}
-	}()
-	return loadPlugins(path)
-}
-
-// Register allows plugins to register
-func Register(r *Registration) {
-	register.Lock()
-	defer register.Unlock()
-
-	if r.Type == "" {
-		panic(ErrNoType)
-	}
-	if r.ID == "" {
-		panic(ErrNoPluginID)
-	}
-	if err := checkUnique(r); err != nil {
-		panic(err)
-	}
-
-	var last bool
-	for _, requires := range r.Requires {
-		if requires == "*" {
-			last = true
-		}
-	}
-	if last && len(r.Requires) != 1 {
-		panic(ErrInvalidRequires)
-	}
-
-	register.r = append(register.r, r)
-}
-
-func checkUnique(r *Registration) error {
-	for _, registered := range register.r {
-		if r.URI() == registered.URI() {
-			return errors.Wrap(ErrIDRegistered, r.URI())
-		}
-	}
-	return nil
-}
-
-// DisableFilter filters out disabled plugins
-type DisableFilter func(r *Registration) bool
-
-// Graph returns an ordered list of registered plugins for initialization.
-// Plugins in disableList specified by id will be disabled.
-func Graph(filter DisableFilter) (ordered []*Registration) {
-	register.RLock()
-	defer register.RUnlock()
-
-	for _, r := range register.r {
-		if filter(r) {
-			r.Disable = true
-		}
-	}
-
-	added := map[*Registration]bool{}
-	for _, r := range register.r {
-		if r.Disable {
-			continue
-		}
-		children(r, added, &ordered)
-		if !added[r] {
-			ordered = append(ordered, r)
-			added[r] = true
-		}
-	}
-	return ordered
-}
-
-func children(reg *Registration, added map[*Registration]bool, ordered *[]*Registration) {
-	for _, t := range reg.Requires {
-		for _, r := range register.r {
-			if !r.Disable &&
-				r.URI() != reg.URI() &&
-				(t == "*" || r.Type == t) {
-				children(r, added, ordered)
-				if !added[r] {
-					*ordered = append(*ordered, r)
-					added[r] = true
-				}
-			}
-		}
-	}
-}

vendor/github.com/containerd/containerd/plugin/plugin_go18.go

@@ -1,62 +0,0 @@
-// +build go1.8,!windows,amd64,!static_build,!gccgo
-
-/*
-   Copyright The containerd Authors.
-
-   Licensed under the Apache License, Version 2.0 (the "License");
-   you may not use this file except in compliance with the License.
-   You may obtain a copy of the License at
-
-       http://www.apache.org/licenses/LICENSE-2.0
-
-   Unless required by applicable law or agreed to in writing, software
-   distributed under the License is distributed on an "AS IS" BASIS,
-   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-   See the License for the specific language governing permissions and
-   limitations under the License.
-*/
-
-package plugin
-
-import (
-	"fmt"
-	"path/filepath"
-	"plugin"
-	"runtime"
-)
-
-// loadPlugins loads all plugins for the OS and Arch
-// that containerd is built for inside the provided path
-func loadPlugins(path string) error {
-	abs, err := filepath.Abs(path)
-	if err != nil {
-		return err
-	}
-	pattern := filepath.Join(abs, fmt.Sprintf(
-		"*-%s-%s.%s",
-		runtime.GOOS,
-		runtime.GOARCH,
-		getLibExt(),
-	))
-	libs, err := filepath.Glob(pattern)
-	if err != nil {
-		return err
-	}
-	for _, lib := range libs {
-		if _, err := plugin.Open(lib); err != nil {
-			return err
-		}
-	}
-	return nil
-}
-
-// getLibExt returns a platform specific lib extension for
-// the platform that containerd is running on
-func getLibExt() string {
-	switch runtime.GOOS {
-	case "windows":
-		return "dll"
-	default:
-		return "so"
-	}
-}

vendor/github.com/containerd/containerd/plugin/plugin_other.go

@@ -1,24 +0,0 @@
-// +build !go1.8 windows !amd64 static_build gccgo
-
-/*
-   Copyright The containerd Authors.
-
-   Licensed under the Apache License, Version 2.0 (the "License");
-   you may not use this file except in compliance with the License.
-   You may obtain a copy of the License at
-
-       http://www.apache.org/licenses/LICENSE-2.0
-
-   Unless required by applicable law or agreed to in writing, software
-   distributed under the License is distributed on an "AS IS" BASIS,
-   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-   See the License for the specific language governing permissions and
-   limitations under the License.
-*/
-
-package plugin
-
-func loadPlugins(path string) error {
-	// plugins not supported until 1.8
-	return nil
-}

vendor/github.com/containerd/ttrpc/.gitignore

@@ -1,14 +0,0 @@
-# Binaries for programs and plugins
-*.exe
-*.dll
-*.so
-*.dylib
-
-# Test binary, build with `go test -c`
-*.test
-
-# Output of the go coverage tool, specifically when used with LiteIDE
-*.out
-
-# Project-local glide cache, RE: https://github.com/Masterminds/glide/issues/736
-.glide/

vendor/github.com/containerd/ttrpc/.travis.yml

@@ -1,24 +0,0 @@
-dist: bionic
-language: go
-
-go:
-  - "1.13.x"
-  - "1.15.x"
-
-install:
-  # Don't change local go.{mod, sum} by go get tools.
-  #
-  # ref: https://github.com/golang/go/issues/27643
-  - pushd ..; go get -u github.com/vbatts/git-validation; popd
-  - pushd ..; go get -u github.com/kunalkushwaha/ltag; popd
-
-before_script:
-  - pushd ..; git clone https://github.com/containerd/project; popd
-
-script:
-  - DCO_VERBOSITY=-q ../project/script/validate/dco
-  - ../project/script/validate/fileheader ../project/
-  - go test -v -race -covermode=atomic -coverprofile=coverage.txt ./...
-
-after_success:
-  - bash <(curl -s https://codecov.io/bash)

vendor/github.com/containerd/ttrpc/LICENSE

@@ -1,201 +0,0 @@
-                                 Apache License
-                           Version 2.0, January 2004
-                        http://www.apache.org/licenses/
-
-   TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
-
-   1. Definitions.
-
-      "License" shall mean the terms and conditions for use, reproduction,
-      and distribution as defined by Sections 1 through 9 of this document.
-
-      "Licensor" shall mean the copyright owner or entity authorized by
-      the copyright owner that is granting the License.
-
-      "Legal Entity" shall mean the union of the acting entity and all
-      other entities that control, are controlled by, or are under common
-      control with that entity. For the purposes of this definition,
-      "control" means (i) the power, direct or indirect, to cause the
-      direction or management of such entity, whether by contract or
-      otherwise, or (ii) ownership of fifty percent (50%) or more of the
-      outstanding shares, or (iii) beneficial ownership of such entity.
-
-      "You" (or "Your") shall mean an individual or Legal Entity
-      exercising permissions granted by this License.
-
-      "Source" form shall mean the preferred form for making modifications,
-      including but not limited to software source code, documentation
-      source, and configuration files.
-
-      "Object" form shall mean any form resulting from mechanical
-      transformation or translation of a Source form, including but
-      not limited to compiled object code, generated documentation,
-      and conversions to other media types.
-
-      "Work" shall mean the work of authorship, whether in Source or
-      Object form, made available under the License, as indicated by a
-      copyright notice that is included in or attached to the work
-      (an example is provided in the Appendix below).
-
-      "Derivative Works" shall mean any work, whether in Source or Object
-      form, that is based on (or derived from) the Work and for which the
-      editorial revisions, annotations, elaborations, or other modifications
-      represent, as a whole, an original work of authorship. For the purposes
-      of this License, Derivative Works shall not include works that remain
-      separable from, or merely link (or bind by name) to the interfaces of,
-      the Work and Derivative Works thereof.
-
-      "Contribution" shall mean any work of authorship, including
-      the original version of the Work and any modifications or additions
-      to that Work or Derivative Works thereof, that is intentionally
-      submitted to Licensor for inclusion in the Work by the copyright owner
-      or by an individual or Legal Entity authorized to submit on behalf of
-      the copyright owner. For the purposes of this definition, "submitted"
-      means any form of electronic, verbal, or written communication sent
-      to the Licensor or its representatives, including but not limited to
-      communication on electronic mailing lists, source code control systems,
-      and issue tracking systems that are managed by, or on behalf of, the
-      Licensor for the purpose of discussing and improving the Work, but
-      excluding communication that is conspicuously marked or otherwise
-      designated in writing by the copyright owner as "Not a Contribution."
-
-      "Contributor" shall mean Licensor and any individual or Legal Entity
-      on behalf of whom a Contribution has been received by Licensor and
-      subsequently incorporated within the Work.
-
-   2. Grant of Copyright License. Subject to the terms and conditions of
-      this License, each Contributor hereby grants to You a perpetual,
-      worldwide, non-exclusive, no-charge, royalty-free, irrevocable
-      copyright license to reproduce, prepare Derivative Works of,
-      publicly display, publicly perform, sublicense, and distribute the
-      Work and such Derivative Works in Source or Object form.
-
-   3. Grant of Patent License. Subject to the terms and conditions of
-      this License, each Contributor hereby grants to You a perpetual,
-      worldwide, non-exclusive, no-charge, royalty-free, irrevocable
-      (except as stated in this section) patent license to make, have made,
-      use, offer to sell, sell, import, and otherwise transfer the Work,
-      where such license applies only to those patent claims licensable
-      by such Contributor that are necessarily infringed by their
-      Contribution(s) alone or by combination of their Contribution(s)
-      with the Work to which such Contribution(s) was submitted. If You
-      institute patent litigation against any entity (including a
-      cross-claim or counterclaim in a lawsuit) alleging that the Work
-      or a Contribution incorporated within the Work constitutes direct
-      or contributory patent infringement, then any patent licenses
-      granted to You under this License for that Work shall terminate
-      as of the date such litigation is filed.
-
-   4. Redistribution. You may reproduce and distribute copies of the
-      Work or Derivative Works thereof in any medium, with or without
-      modifications, and in Source or Object form, provided that You
-      meet the following conditions:
-
-      (a) You must give any other recipients of the Work or
-          Derivative Works a copy of this License; and
-
-      (b) You must cause any modified files to carry prominent notices
-          stating that You changed the files; and
-
-      (c) You must retain, in the Source form of any Derivative Works
-          that You distribute, all copyright, patent, trademark, and
-          attribution notices from the Source form of the Work,
-          excluding those notices that do not pertain to any part of
-          the Derivative Works; and
-
-      (d) If the Work includes a "NOTICE" text file as part of its
-          distribution, then any Derivative Works that You distribute must
-          include a readable copy of the attribution notices contained
-          within such NOTICE file, excluding those notices that do not
-          pertain to any part of the Derivative Works, in at least one
-          of the following places: within a NOTICE text file distributed
-          as part of the Derivative Works; within the Source form or
-          documentation, if provided along with the Derivative Works; or,
-          within a display generated by the Derivative Works, if and
-          wherever such third-party notices normally appear. The contents
-          of the NOTICE file are for informational purposes only and
-          do not modify the License. You may add Your own attribution
-          notices within Derivative Works that You distribute, alongside
-          or as an addendum to the NOTICE text from the Work, provided
-          that such additional attribution notices cannot be construed
-          as modifying the License.
-
-      You may add Your own copyright statement to Your modifications and
-      may provide additional or different license terms and conditions
-      for use, reproduction, or distribution of Your modifications, or
-      for any such Derivative Works as a whole, provided Your use,
-      reproduction, and distribution of the Work otherwise complies with
-      the conditions stated in this License.
-
-   5. Submission of Contributions. Unless You explicitly state otherwise,
-      any Contribution intentionally submitted for inclusion in the Work
-      by You to the Licensor shall be under the terms and conditions of
-      this License, without any additional terms or conditions.
-      Notwithstanding the above, nothing herein shall supersede or modify
-      the terms of any separate license agreement you may have executed
-      with Licensor regarding such Contributions.
-
-   6. Trademarks. This License does not grant permission to use the trade
-      names, trademarks, service marks, or product names of the Licensor,
-      except as required for reasonable and customary use in describing the
-      origin of the Work and reproducing the content of the NOTICE file.
-
-   7. Disclaimer of Warranty. Unless required by applicable law or
-      agreed to in writing, Licensor provides the Work (and each
-      Contributor provides its Contributions) on an "AS IS" BASIS,
-      WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
-      implied, including, without limitation, any warranties or conditions
-      of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
-      PARTICULAR PURPOSE. You are solely responsible for determining the
-      appropriateness of using or redistributing the Work and assume any
-      risks associated with Your exercise of permissions under this License.
-
-   8. Limitation of Liability. In no event and under no legal theory,
-      whether in tort (including negligence), contract, or otherwise,
-      unless required by applicable law (such as deliberate and grossly
-      negligent acts) or agreed to in writing, shall any Contributor be
-      liable to You for damages, including any direct, indirect, special,
-      incidental, or consequential damages of any character arising as a
-      result of this License or out of the use or inability to use the
-      Work (including but not limited to damages for loss of goodwill,
-      work stoppage, computer failure or malfunction, or any and all
-      other commercial damages or losses), even if such Contributor
-      has been advised of the possibility of such damages.
-
-   9. Accepting Warranty or Additional Liability. While redistributing
-      the Work or Derivative Works thereof, You may choose to offer,
-      and charge a fee for, acceptance of support, warranty, indemnity,
-      or other liability obligations and/or rights consistent with this
-      License. However, in accepting such obligations, You may act only
-      on Your own behalf and on Your sole responsibility, not on behalf
-      of any other Contributor, and only if You agree to indemnify,
-      defend, and hold each Contributor harmless for any liability
-      incurred by, or claims asserted against, such Contributor by reason
-      of your accepting any such warranty or additional liability.
-
-   END OF TERMS AND CONDITIONS
-
-   APPENDIX: How to apply the Apache License to your work.
-
-      To apply the Apache License to your work, attach the following
-      boilerplate notice, with the fields enclosed by brackets "[]"
-      replaced with your own identifying information. (Don't include
-      the brackets!)  The text should be enclosed in the appropriate
-      comment syntax for the file format. We also recommend that a
-      file or class name and description of purpose be included on the
-      same "printed page" as the copyright notice for easier
-      identification within third-party archives.
-
-   Copyright [yyyy] [name of copyright owner]
-
-   Licensed under the Apache License, Version 2.0 (the "License");
-   you may not use this file except in compliance with the License.
-   You may obtain a copy of the License at
-
-       http://www.apache.org/licenses/LICENSE-2.0
-
-   Unless required by applicable law or agreed to in writing, software
-   distributed under the License is distributed on an "AS IS" BASIS,
-   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-   See the License for the specific language governing permissions and
-   limitations under the License.

vendor/github.com/containerd/ttrpc/README.md

@@ -1,62 +0,0 @@
-# ttrpc
-
-[![Build Status](https://travis-ci.org/containerd/ttrpc.svg?branch=master)](https://travis-ci.org/containerd/ttrpc)
-
-GRPC for low-memory environments.
-
-The existing grpc-go project requires a lot of memory overhead for importing
-packages and at runtime. While this is great for many services with low density
-requirements, this can be a problem when running a large number of services on
-a single machine or on a machine with a small amount of memory.
-
-Using the same GRPC definitions, this project reduces the binary size and
-protocol overhead required. We do this by eliding the `net/http`, `net/http2`
-and `grpc` package used by grpc replacing it with a lightweight framing
-protocol. The result are smaller binaries that use less resident memory with
-the same ease of use as GRPC.
-
-Please note that while this project supports generating either end of the
-protocol, the generated service definitions will be incompatible with regular
-GRPC services, as they do not speak the same protocol.
-
-# Usage
-
-Create a gogo vanity binary (see
-[`cmd/protoc-gen-gogottrpc/main.go`](cmd/protoc-gen-gogottrpc/main.go) for an
-example with the ttrpc plugin enabled.
-
-It's recommended to use [`protobuild`](https://github.com//stevvooe/protobuild)
-to build the protobufs for this project, but this will work with protoc
-directly, if required.
-
-# Differences from GRPC
-
-- The protocol stack has been replaced with a lighter protocol that doesn't
-  require http, http2 and tls.
-- The client and server interface are identical whereas in GRPC there is a
-  client and server interface that are different.
-- The Go stdlib context package is used instead.
-- No support for streams yet.
-
-# Status
-
-Very new. YMMV.
-
-TODO:
-
-- [X] Plumb error codes and GRPC status
-- [X] Remove use of any type and dependency on typeurl package
-- [X] Ensure that protocol can support streaming in the future
-- [ ] Document protocol layout
-- [ ] Add testing under concurrent load to ensure
-- [ ] Verify connection error handling
-
-# Project details
-
-ttrpc is a containerd sub-project, licensed under the [Apache 2.0 license](./LICENSE).
-As a containerd sub-project, you will find the:
- * [Project governance](https://github.com/containerd/project/blob/master/GOVERNANCE.md),
- * [Maintainers](https://github.com/containerd/project/blob/master/MAINTAINERS),
- * and [Contributing guidelines](https://github.com/containerd/project/blob/master/CONTRIBUTING.md)
-
-information in our [`containerd/project`](https://github.com/containerd/project) repository.

vendor/github.com/containerd/ttrpc/channel.go

@@ -1,153 +0,0 @@
-/*
-   Copyright The containerd Authors.
-
-   Licensed under the Apache License, Version 2.0 (the "License");
-   you may not use this file except in compliance with the License.
-   You may obtain a copy of the License at
-
-       http://www.apache.org/licenses/LICENSE-2.0
-
-   Unless required by applicable law or agreed to in writing, software
-   distributed under the License is distributed on an "AS IS" BASIS,
-   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-   See the License for the specific language governing permissions and
-   limitations under the License.
-*/
-
-package ttrpc
-
-import (
-	"bufio"
-	"encoding/binary"
-	"io"
-	"net"
-	"sync"
-
-	"github.com/pkg/errors"
-	"google.golang.org/grpc/codes"
-	"google.golang.org/grpc/status"
-)
-
-const (
-	messageHeaderLength = 10
-	messageLengthMax    = 4 << 20
-)
-
-type messageType uint8
-
-const (
-	messageTypeRequest  messageType = 0x1
-	messageTypeResponse messageType = 0x2
-)
-
-// messageHeader represents the fixed-length message header of 10 bytes sent
-// with every request.
-type messageHeader struct {
-	Length   uint32      // length excluding this header. b[:4]
-	StreamID uint32      // identifies which request stream message is a part of. b[4:8]
-	Type     messageType // message type b[8]
-	Flags    uint8       // reserved          b[9]
-}
-
-func readMessageHeader(p []byte, r io.Reader) (messageHeader, error) {
-	_, err := io.ReadFull(r, p[:messageHeaderLength])
-	if err != nil {
-		return messageHeader{}, err
-	}
-
-	return messageHeader{
-		Length:   binary.BigEndian.Uint32(p[:4]),
-		StreamID: binary.BigEndian.Uint32(p[4:8]),
-		Type:     messageType(p[8]),
-		Flags:    p[9],
-	}, nil
-}
-
-func writeMessageHeader(w io.Writer, p []byte, mh messageHeader) error {
-	binary.BigEndian.PutUint32(p[:4], mh.Length)
-	binary.BigEndian.PutUint32(p[4:8], mh.StreamID)
-	p[8] = byte(mh.Type)
-	p[9] = mh.Flags
-
-	_, err := w.Write(p[:])
-	return err
-}
-
-var buffers sync.Pool
-
-type channel struct {
-	conn  net.Conn
-	bw    *bufio.Writer
-	br    *bufio.Reader
-	hrbuf [messageHeaderLength]byte // avoid alloc when reading header
-	hwbuf [messageHeaderLength]byte
-}
-
-func newChannel(conn net.Conn) *channel {
-	return &channel{
-		conn: conn,
-		bw:   bufio.NewWriter(conn),
-		br:   bufio.NewReader(conn),
-	}
-}
-
-// recv a message from the channel. The returned buffer contains the message.
-//
-// If a valid grpc status is returned, the message header
-// returned will be valid and caller should send that along to
-// the correct consumer. The bytes on the underlying channel
-// will be discarded.
-func (ch *channel) recv() (messageHeader, []byte, error) {
-	mh, err := readMessageHeader(ch.hrbuf[:], ch.br)
-	if err != nil {
-		return messageHeader{}, nil, err
-	}
-
-	if mh.Length > uint32(messageLengthMax) {
-		if _, err := ch.br.Discard(int(mh.Length)); err != nil {
-			return mh, nil, errors.Wrapf(err, "failed to discard after receiving oversized message")
-		}
-
-		return mh, nil, status.Errorf(codes.ResourceExhausted, "message length %v exceed maximum message size of %v", mh.Length, messageLengthMax)
-	}
-
-	p := ch.getmbuf(int(mh.Length))
-	if _, err := io.ReadFull(ch.br, p); err != nil {
-		return messageHeader{}, nil, errors.Wrapf(err, "failed reading message")
-	}
-
-	return mh, p, nil
-}
-
-func (ch *channel) send(streamID uint32, t messageType, p []byte) error {
-	if err := writeMessageHeader(ch.bw, ch.hwbuf[:], messageHeader{Length: uint32(len(p)), StreamID: streamID, Type: t}); err != nil {
-		return err
-	}
-
-	_, err := ch.bw.Write(p)
-	if err != nil {
-		return err
-	}
-
-	return ch.bw.Flush()
-}
-
-func (ch *channel) getmbuf(size int) []byte {
-	// we can't use the standard New method on pool because we want to allocate
-	// based on size.
-	b, ok := buffers.Get().(*[]byte)
-	if !ok || cap(*b) < size {
-		// TODO(stevvooe): It may be better to allocate these in fixed length
-		// buckets to reduce fragmentation but its not clear that would help
-		// with performance. An ilogb approach or similar would work well.
-		bb := make([]byte, size)
-		b = &bb
-	} else {
-		*b = (*b)[:size]
-	}
-	return *b
-}
-
-func (ch *channel) putmbuf(p []byte) {
-	buffers.Put(&p)
-}

vendor/github.com/containerd/ttrpc/client.go

@@ -1,368 +0,0 @@
-/*
-   Copyright The containerd Authors.
-
-   Licensed under the Apache License, Version 2.0 (the "License");
-   you may not use this file except in compliance with the License.
-   You may obtain a copy of the License at
-
-       http://www.apache.org/licenses/LICENSE-2.0
-
-   Unless required by applicable law or agreed to in writing, software
-   distributed under the License is distributed on an "AS IS" BASIS,
-   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-   See the License for the specific language governing permissions and
-   limitations under the License.
-*/
-
-package ttrpc
-
-import (
-	"context"
-	"io"
-	"net"
-	"os"
-	"strings"
-	"sync"
-	"syscall"
-	"time"
-
-	"github.com/gogo/protobuf/proto"
-	"github.com/pkg/errors"
-	"github.com/sirupsen/logrus"
-	"google.golang.org/grpc/codes"
-	"google.golang.org/grpc/status"
-)
-
-// ErrClosed is returned by client methods when the underlying connection is
-// closed.
-var ErrClosed = errors.New("ttrpc: closed")
-
-// Client for a ttrpc server
-type Client struct {
-	codec   codec
-	conn    net.Conn
-	channel *channel
-	calls   chan *callRequest
-
-	ctx    context.Context
-	closed func()
-
-	closeOnce       sync.Once
-	userCloseFunc   func()
-	userCloseWaitCh chan struct{}
-
-	errOnce     sync.Once
-	err         error
-	interceptor UnaryClientInterceptor
-}
-
-// ClientOpts configures a client
-type ClientOpts func(c *Client)
-
-// WithOnClose sets the close func whenever the client's Close() method is called
-func WithOnClose(onClose func()) ClientOpts {
-	return func(c *Client) {
-		c.userCloseFunc = onClose
-	}
-}
-
-// WithUnaryClientInterceptor sets the provided client interceptor
-func WithUnaryClientInterceptor(i UnaryClientInterceptor) ClientOpts {
-	return func(c *Client) {
-		c.interceptor = i
-	}
-}
-
-func NewClient(conn net.Conn, opts ...ClientOpts) *Client {
-	ctx, cancel := context.WithCancel(context.Background())
-	c := &Client{
-		codec:           codec{},
-		conn:            conn,
-		channel:         newChannel(conn),
-		calls:           make(chan *callRequest),
-		closed:          cancel,
-		ctx:             ctx,
-		userCloseFunc:   func() {},
-		userCloseWaitCh: make(chan struct{}),
-		interceptor:     defaultClientInterceptor,
-	}
-
-	for _, o := range opts {
-		o(c)
-	}
-
-	go c.run()
-	return c
-}
-
-type callRequest struct {
-	ctx  context.Context
-	req  *Request
-	resp *Response  // response will be written back here
-	errs chan error // error written here on completion
-}
-
-func (c *Client) Call(ctx context.Context, service, method string, req, resp interface{}) error {
-	payload, err := c.codec.Marshal(req)
-	if err != nil {
-		return err
-	}
-
-	var (
-		creq = &Request{
-			Service: service,
-			Method:  method,
-			Payload: payload,
-		}
-
-		cresp = &Response{}
-	)
-
-	if metadata, ok := GetMetadata(ctx); ok {
-		metadata.setRequest(creq)
-	}
-
-	if dl, ok := ctx.Deadline(); ok {
-		creq.TimeoutNano = dl.Sub(time.Now()).Nanoseconds()
-	}
-
-	info := &UnaryClientInfo{
-		FullMethod: fullPath(service, method),
-	}
-	if err := c.interceptor(ctx, creq, cresp, info, c.dispatch); err != nil {
-		return err
-	}
-
-	if err := c.codec.Unmarshal(cresp.Payload, resp); err != nil {
-		return err
-	}
-
-	if cresp.Status != nil && cresp.Status.Code != int32(codes.OK) {
-		return status.ErrorProto(cresp.Status)
-	}
-	return nil
-}
-
-func (c *Client) dispatch(ctx context.Context, req *Request, resp *Response) error {
-	errs := make(chan error, 1)
-	call := &callRequest{
-		ctx:  ctx,
-		req:  req,
-		resp: resp,
-		errs: errs,
-	}
-
-	select {
-	case <-ctx.Done():
-		return ctx.Err()
-	case c.calls <- call:
-	case <-c.ctx.Done():
-		return c.error()
-	}
-
-	select {
-	case <-ctx.Done():
-		return ctx.Err()
-	case err := <-errs:
-		return filterCloseErr(err)
-	case <-c.ctx.Done():
-		return c.error()
-	}
-}
-
-func (c *Client) Close() error {
-	c.closeOnce.Do(func() {
-		c.closed()
-	})
-	return nil
-}
-
-// UserOnCloseWait is used to blocks untils the user's on-close callback
-// finishes.
-func (c *Client) UserOnCloseWait(ctx context.Context) error {
-	select {
-	case <-c.userCloseWaitCh:
-		return nil
-	case <-ctx.Done():
-		return ctx.Err()
-	}
-}
-
-type message struct {
-	messageHeader
-	p   []byte
-	err error
-}
-
-type receiver struct {
-	wg       *sync.WaitGroup
-	messages chan *message
-	err      error
-}
-
-func (r *receiver) run(ctx context.Context, c *channel) {
-	defer r.wg.Done()
-
-	for {
-		select {
-		case <-ctx.Done():
-			r.err = ctx.Err()
-			return
-		default:
-			mh, p, err := c.recv()
-			if err != nil {
-				_, ok := status.FromError(err)
-				if !ok {
-					// treat all errors that are not an rpc status as terminal.
-					// all others poison the connection.
-					r.err = filterCloseErr(err)
-					return
-				}
-			}
-			select {
-			case r.messages <- &message{
-				messageHeader: mh,
-				p:             p[:mh.Length],
-				err:           err,
-			}:
-			case <-ctx.Done():
-				r.err = ctx.Err()
-				return
-			}
-		}
-	}
-}
-
-func (c *Client) run() {
-	var (
-		streamID      uint32 = 1
-		waiters              = make(map[uint32]*callRequest)
-		calls                = c.calls
-		incoming             = make(chan *message)
-		receiversDone        = make(chan struct{})
-		wg            sync.WaitGroup
-	)
-
-	// broadcast the shutdown error to the remaining waiters.
-	abortWaiters := func(wErr error) {
-		for _, waiter := range waiters {
-			waiter.errs <- wErr
-		}
-	}
-	recv := &receiver{
-		wg:       &wg,
-		messages: incoming,
-	}
-	wg.Add(1)
-
-	go func() {
-		wg.Wait()
-		close(receiversDone)
-	}()
-	go recv.run(c.ctx, c.channel)
-
-	defer func() {
-		c.conn.Close()
-		c.userCloseFunc()
-		close(c.userCloseWaitCh)
-	}()
-
-	for {
-		select {
-		case call := <-calls:
-			if err := c.send(streamID, messageTypeRequest, call.req); err != nil {
-				call.errs <- err
-				continue
-			}
-
-			waiters[streamID] = call
-			streamID += 2 // enforce odd client initiated request ids
-		case msg := <-incoming:
-			call, ok := waiters[msg.StreamID]
-			if !ok {
-				logrus.Errorf("ttrpc: received message for unknown channel %v", msg.StreamID)
-				continue
-			}
-
-			call.errs <- c.recv(call.resp, msg)
-			delete(waiters, msg.StreamID)
-		case <-receiversDone:
-			// all the receivers have exited
-			if recv.err != nil {
-				c.setError(recv.err)
-			}
-			// don't return out, let the close of the context trigger the abort of waiters
-			c.Close()
-		case <-c.ctx.Done():
-			abortWaiters(c.error())
-			return
-		}
-	}
-}
-
-func (c *Client) error() error {
-	c.errOnce.Do(func() {
-		if c.err == nil {
-			c.err = ErrClosed
-		}
-	})
-	return c.err
-}
-
-func (c *Client) setError(err error) {
-	c.errOnce.Do(func() {
-		c.err = err
-	})
-}
-
-func (c *Client) send(streamID uint32, mtype messageType, msg interface{}) error {
-	p, err := c.codec.Marshal(msg)
-	if err != nil {
-		return err
-	}
-
-	return c.channel.send(streamID, mtype, p)
-}
-
-func (c *Client) recv(resp *Response, msg *message) error {
-	if msg.err != nil {
-		return msg.err
-	}
-
-	if msg.Type != messageTypeResponse {
-		return errors.New("unknown message type received")
-	}
-
-	defer c.channel.putmbuf(msg.p)
-	return proto.Unmarshal(msg.p, resp)
-}
-
-// filterCloseErr rewrites EOF and EPIPE errors to ErrClosed. Use when
-// returning from call or handling errors from main read loop.
-//
-// This purposely ignores errors with a wrapped cause.
-func filterCloseErr(err error) error {
-	switch {
-	case err == nil:
-		return nil
-	case err == io.EOF:
-		return ErrClosed
-	case errors.Cause(err) == io.EOF:
-		return ErrClosed
-	case strings.Contains(err.Error(), "use of closed network connection"):
-		return ErrClosed
-	default:
-		// if we have an epipe on a write or econnreset on a read , we cast to errclosed
-		var oerr *net.OpError
-		if errors.As(err, &oerr) && (oerr.Op == "write" || oerr.Op == "read") {
-			serr, sok := oerr.Err.(*os.SyscallError)
-			if sok && ((serr.Err == syscall.EPIPE && oerr.Op == "write") ||
-				(serr.Err == syscall.ECONNRESET && oerr.Op == "read")) {
-
-				return ErrClosed
-			}
-		}
-	}
-
-	return err
-}

vendor/github.com/containerd/ttrpc/codec.go

@@ -1,42 +0,0 @@
-/*
-   Copyright The containerd Authors.
-
-   Licensed under the Apache License, Version 2.0 (the "License");
-   you may not use this file except in compliance with the License.
-   You may obtain a copy of the License at
-
-       http://www.apache.org/licenses/LICENSE-2.0
-
-   Unless required by applicable law or agreed to in writing, software
-   distributed under the License is distributed on an "AS IS" BASIS,
-   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-   See the License for the specific language governing permissions and
-   limitations under the License.
-*/
-
-package ttrpc
-
-import (
-	"github.com/gogo/protobuf/proto"
-	"github.com/pkg/errors"
-)
-
-type codec struct{}
-
-func (c codec) Marshal(msg interface{}) ([]byte, error) {
-	switch v := msg.(type) {
-	case proto.Message:
-		return proto.Marshal(v)
-	default:
-		return nil, errors.Errorf("ttrpc: cannot marshal unknown type: %T", msg)
-	}
-}
-
-func (c codec) Unmarshal(p []byte, msg interface{}) error {
-	switch v := msg.(type) {
-	case proto.Message:
-		return proto.Unmarshal(p, v)
-	default:
-		return errors.Errorf("ttrpc: cannot unmarshal into unknown type: %T", msg)
-	}
-}

vendor/github.com/containerd/ttrpc/config.go

@@ -1,52 +0,0 @@
-/*
-   Copyright The containerd Authors.
-
-   Licensed under the Apache License, Version 2.0 (the "License");
-   you may not use this file except in compliance with the License.
-   You may obtain a copy of the License at
-
-       http://www.apache.org/licenses/LICENSE-2.0
-
-   Unless required by applicable law or agreed to in writing, software
-   distributed under the License is distributed on an "AS IS" BASIS,
-   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-   See the License for the specific language governing permissions and
-   limitations under the License.
-*/
-
-package ttrpc
-
-import "github.com/pkg/errors"
-
-type serverConfig struct {
-	handshaker  Handshaker
-	interceptor UnaryServerInterceptor
-}
-
-// ServerOpt for configuring a ttrpc server
-type ServerOpt func(*serverConfig) error
-
-// WithServerHandshaker can be passed to NewServer to ensure that the
-// handshaker is called before every connection attempt.
-//
-// Only one handshaker is allowed per server.
-func WithServerHandshaker(handshaker Handshaker) ServerOpt {
-	return func(c *serverConfig) error {
-		if c.handshaker != nil {
-			return errors.New("only one handshaker allowed per server")
-		}
-		c.handshaker = handshaker
-		return nil
-	}
-}
-
-// WithUnaryServerInterceptor sets the provided interceptor on the server
-func WithUnaryServerInterceptor(i UnaryServerInterceptor) ServerOpt {
-	return func(c *serverConfig) error {
-		if c.interceptor != nil {
-			return errors.New("only one interceptor allowed per server")
-		}
-		c.interceptor = i
-		return nil
-	}
-}

vendor/github.com/containerd/ttrpc/go.mod

@@ -1,14 +0,0 @@
-module github.com/containerd/ttrpc
-
-go 1.13
-
-require (
-	github.com/gogo/protobuf v1.3.1
-	github.com/konsorten/go-windows-terminal-sequences v1.0.2 // indirect
-	github.com/pkg/errors v0.9.1
-	github.com/prometheus/procfs v0.0.0-20190522114515-bc1a522cf7b1
-	github.com/sirupsen/logrus v1.4.2
-	golang.org/x/sys v0.0.0-20200120151820-655fe14d7479
-	google.golang.org/genproto v0.0.0-20200117163144-32f20d992d24
-	google.golang.org/grpc v1.26.0
-)

vendor/github.com/containerd/ttrpc/go.sum

@@ -1,85 +0,0 @@
-cloud.google.com/go v0.26.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw=
-github.com/BurntSushi/toml v0.3.1/go.mod h1:xHWCNGjB5oqiDr8zfno3MHue2Ht5sIBksp03qcyfWMU=
-github.com/census-instrumentation/opencensus-proto v0.2.1/go.mod h1:f6KPmirojxKA12rnyqOA5BBL4O983OfeGPqjHWSTneU=
-github.com/client9/misspell v0.3.4/go.mod h1:qj6jICC3Q7zFZvVWo7KLAzC3yx5G7kyvSDkc90ppPyw=
-github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
-github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
-github.com/envoyproxy/go-control-plane v0.9.1-0.20191026205805-5f8ba28d4473/go.mod h1:YTl/9mNaCwkRvm6d1a2C3ymFceY/DCBVvsKhRF0iEA4=
-github.com/envoyproxy/protoc-gen-validate v0.1.0/go.mod h1:iSmxcyjqTsJpI2R4NaDN7+kN2VEUnK/pcBlmesArF7c=
-github.com/gogo/protobuf v1.2.1 h1:/s5zKNz0uPFCZ5hddgPdo2TK2TVrUNMn0OOX8/aZMTE=
-github.com/gogo/protobuf v1.2.1/go.mod h1:hp+jE20tsWTFYpLwKvXlhS1hjn+gTNwPg2I6zVXpSg4=
-github.com/gogo/protobuf v1.3.1 h1:DqDEcV5aeaTmdFBePNpYsp3FlcVH/2ISVVM9Qf8PSls=
-github.com/gogo/protobuf v1.3.1/go.mod h1:SlYgWuQ5SjCEi6WLHjHCa1yvBfUnHcTbrrZtXPKa29o=
-github.com/golang/glog v0.0.0-20160126235308-23def4e6c14b/go.mod h1:SBH7ygxi8pfUlaOkMMuAQtPIUF8ecWP5IEl/CR7VP2Q=
-github.com/golang/mock v1.1.1/go.mod h1:oTYuIxOrZwtPieC+H1uAHpcLFnEyAGVDL/k47Jfbm0A=
-github.com/golang/protobuf v1.2.0/go.mod h1:6lQm79b+lXiMfvg/cZm0SGofjICqVBUtrP5yJMmIC1U=
-github.com/golang/protobuf v1.3.1 h1:YF8+flBXS5eO826T4nzqPrxfhQThhXl0YzfuUPu4SBg=
-github.com/golang/protobuf v1.3.1/go.mod h1:6lQm79b+lXiMfvg/cZm0SGofjICqVBUtrP5yJMmIC1U=
-github.com/golang/protobuf v1.3.2 h1:6nsPYzhq5kReh6QImI3k5qWzO4PEbvbIW2cwSfR/6xs=
-github.com/golang/protobuf v1.3.2/go.mod h1:6lQm79b+lXiMfvg/cZm0SGofjICqVBUtrP5yJMmIC1U=
-github.com/google/go-cmp v0.2.0/go.mod h1:oXzfMopK8JAjlY9xF4vHSVASa0yLyX7SntLO5aqRK0M=
-github.com/kisielk/errcheck v1.1.0/go.mod h1:EZBBE59ingxPouuu3KfxchcWSUPOHkagtvWXihfKN4Q=
-github.com/kisielk/errcheck v1.2.0/go.mod h1:/BMXB+zMLi60iA8Vv6Ksmxu/1UDYcXs4uQLJ+jE2L00=
-github.com/kisielk/gotool v1.0.0/go.mod h1:XhKaO+MFFWcvkIS/tQcRk01m1F5IRFswLeQ+oQHNcck=
-github.com/konsorten/go-windows-terminal-sequences v1.0.1 h1:mweAR1A6xJ3oS2pRaGiHgQ4OO8tzTaLawm8vnODuwDk=
-github.com/konsorten/go-windows-terminal-sequences v1.0.1/go.mod h1:T0+1ngSBFLxvqU3pZ+m/2kptfBszLMUkC4ZK/EgS/cQ=
-github.com/konsorten/go-windows-terminal-sequences v1.0.2 h1:DB17ag19krx9CFsz4o3enTrPXyIXCl+2iCXH/aMAp9s=
-github.com/konsorten/go-windows-terminal-sequences v1.0.2/go.mod h1:T0+1ngSBFLxvqU3pZ+m/2kptfBszLMUkC4ZK/EgS/cQ=
-github.com/pkg/errors v0.8.1 h1:iURUrRGxPUNPdy5/HRSm+Yj6okJ6UtLINN0Q9M4+h3I=
-github.com/pkg/errors v0.8.1/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINEl0=
-github.com/pkg/errors v0.9.1 h1:FEBLx1zS214owpjy7qsBeixbURkuhQAwrK5UwLGTwt4=
-github.com/pkg/errors v0.9.1/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINEl0=
-github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
-github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
-github.com/prometheus/client_model v0.0.0-20190812154241-14fe0d1b01d4/go.mod h1:xMI15A0UPsDsEKsMN9yxemIoYk6Tm2C1GtYGdfGttqA=
-github.com/prometheus/procfs v0.0.0-20190522114515-bc1a522cf7b1 h1:Lo6mRUjdS99f3zxYOUalftWHUoOGaDRqFk1+j0Q57/I=
-github.com/prometheus/procfs v0.0.0-20190522114515-bc1a522cf7b1/go.mod h1:TjEm7ze935MbeOT/UhFTIMYKhuLP4wbCsTZCD3I8kEA=
-github.com/sirupsen/logrus v1.4.2 h1:SPIRibHv4MatM3XXNO2BJeFLZwZ2LvZgfQ5+UNI2im4=
-github.com/sirupsen/logrus v1.4.2/go.mod h1:tLMulIdttU9McNUspp0xgXVQah82FyeX6MwdIuYE2rE=
-github.com/stretchr/objx v0.1.1/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
-github.com/stretchr/testify v1.2.2 h1:bSDNvY7ZPG5RlJ8otE/7V6gMiyenm9RtJ7IUVIAoJ1w=
-github.com/stretchr/testify v1.2.2/go.mod h1:a8OnRcib4nhh0OaRAV+Yts87kKdq0PP7pXfy6kDkUVs=
-golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=
-golang.org/x/exp v0.0.0-20190121172915-509febef88a4/go.mod h1:CJ0aWSM057203Lf6IL+f9T1iT9GByDxfZKAQTCR3kQA=
-golang.org/x/lint v0.0.0-20181026193005-c67002cb31c3/go.mod h1:UVdnD1Gm6xHRNCYTkRU2/jEulfH38KcIWyp/GAMgvoE=
-golang.org/x/lint v0.0.0-20190227174305-5b3e6a55c961/go.mod h1:wehouNa3lNwaWXcvxsM5YxQ5yQlVC4a0KAMCusXpPoU=
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-golang.org/x/oauth2 v0.0.0-20180821212333-d2e6202438be/go.mod h1:N/0e6XlmueqKjAGxoOufVs8QHGRruUQn6yWY3a++T0U=
-golang.org/x/sync v0.0.0-20180314180146-1d60e4601c6f/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
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-golang.org/x/sync v0.0.0-20190423024810-112230192c58/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
-golang.org/x/sys v0.0.0-20180830151530-49385e6e1522/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
-golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
-golang.org/x/sys v0.0.0-20190422165155-953cdadca894/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
-golang.org/x/sys v0.0.0-20190522044717-8097e1b27ff5 h1:f005F/Jl5JLP036x7QIvUVhNTqxvSYwFIiyOh2q12iU=
-golang.org/x/sys v0.0.0-20190522044717-8097e1b27ff5/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
-golang.org/x/sys v0.0.0-20200120151820-655fe14d7479 h1:LhLiKguPgZL+Tglay4GhVtfF0kb8cvOJ0dHTCBO8YNI=
-golang.org/x/sys v0.0.0-20200120151820-655fe14d7479/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
-golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
-golang.org/x/tools v0.0.0-20180221164845-07fd8470d635/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
-golang.org/x/tools v0.0.0-20181030221726-6c7e314b6563/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
-golang.org/x/tools v0.0.0-20190114222345-bf090417da8b/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
-golang.org/x/tools v0.0.0-20190226205152-f727befe758c/go.mod h1:9Yl7xja0Znq3iFh3HoIrodX9oNMXvdceNzlUR8zjMvY=
-golang.org/x/tools v0.0.0-20190311212946-11955173bddd/go.mod h1:LCzVGOaR6xXOjkQ3onu1FJEFr0SW1gC7cKk1uF8kGRs=
-golang.org/x/tools v0.0.0-20190524140312-2c0ae7006135/go.mod h1:RgjU9mgBXZiqYHBnxXauZ1Gv1EHHAz9KjViQ78xBX0Q=
-google.golang.org/appengine v1.1.0/go.mod h1:EbEs0AVv82hx2wNQdGPgUI5lhzA/G0D9YwlJXL52JkM=
-google.golang.org/appengine v1.4.0/go.mod h1:xpcJRLb0r/rnEns0DIKYYv+WjYCduHsrkT7/EB5XEv4=
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-google.golang.org/genproto v0.0.0-20190522204451-c2c4e71fbf69 h1:4rNOqY4ULrKzS6twXa619uQgI7h9PaVd4ZhjFQ7C5zs=
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-google.golang.org/genproto v0.0.0-20190819201941-24fa4b261c55/go.mod h1:DMBHOl98Agz4BDEuKkezgsaosCRResVns1a3J2ZsMNc=
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-google.golang.org/grpc v1.23.0/go.mod h1:Y5yQAOtifL1yxbo5wqy6BxZv8vAUGQwXBOALyacEbxg=
-google.golang.org/grpc v1.26.0 h1:2dTRdpdFEEhJYQD8EMLB61nnrzSCTbG38PhqdhvOltg=
-google.golang.org/grpc v1.26.0/go.mod h1:qbnxyOmOxrQa7FizSgH+ReBfzJrCY1pSN7KXBS8abTk=
-honnef.co/go/tools v0.0.0-20190102054323-c2f93a96b099/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=
-honnef.co/go/tools v0.0.0-20190523083050-ea95bdfd59fc/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=

vendor/github.com/containerd/ttrpc/handshake.go

@@ -1,50 +0,0 @@
-/*
-   Copyright The containerd Authors.
-
-   Licensed under the Apache License, Version 2.0 (the "License");
-   you may not use this file except in compliance with the License.
-   You may obtain a copy of the License at
-
-       http://www.apache.org/licenses/LICENSE-2.0
-
-   Unless required by applicable law or agreed to in writing, software
-   distributed under the License is distributed on an "AS IS" BASIS,
-   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-   See the License for the specific language governing permissions and
-   limitations under the License.
-*/
-
-package ttrpc
-
-import (
-	"context"
-	"net"
-)
-
-// Handshaker defines the interface for connection handshakes performed on the
-// server or client when first connecting.
-type Handshaker interface {
-	// Handshake should confirm or decorate a connection that may be incoming
-	// to a server or outgoing from a client.
-	//
-	// If this returns without an error, the caller should use the connection
-	// in place of the original connection.
-	//
-	// The second return value can contain credential specific data, such as
-	// unix socket credentials or TLS information.
-	//
-	// While we currently only have implementations on the server-side, this
-	// interface should be sufficient to implement similar handshakes on the
-	// client-side.
-	Handshake(ctx context.Context, conn net.Conn) (net.Conn, interface{}, error)
-}
-
-type handshakerFunc func(ctx context.Context, conn net.Conn) (net.Conn, interface{}, error)
-
-func (fn handshakerFunc) Handshake(ctx context.Context, conn net.Conn) (net.Conn, interface{}, error) {
-	return fn(ctx, conn)
-}
-
-func noopHandshake(ctx context.Context, conn net.Conn) (net.Conn, interface{}, error) {
-	return conn, nil, nil
-}

vendor/github.com/containerd/ttrpc/interceptor.go

@@ -1,50 +0,0 @@
-/*
-   Copyright The containerd Authors.
-
-   Licensed under the Apache License, Version 2.0 (the "License");
-   you may not use this file except in compliance with the License.
-   You may obtain a copy of the License at
-
-       http://www.apache.org/licenses/LICENSE-2.0
-
-   Unless required by applicable law or agreed to in writing, software
-   distributed under the License is distributed on an "AS IS" BASIS,
-   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-   See the License for the specific language governing permissions and
-   limitations under the License.
-*/
-
-package ttrpc
-
-import "context"
-
-// UnaryServerInfo provides information about the server request
-type UnaryServerInfo struct {
-	FullMethod string
-}
-
-// UnaryClientInfo provides information about the client request
-type UnaryClientInfo struct {
-	FullMethod string
-}
-
-// Unmarshaler contains the server request data and allows it to be unmarshaled
-// into a concrete type
-type Unmarshaler func(interface{}) error
-
-// Invoker invokes the client's request and response from the ttrpc server
-type Invoker func(context.Context, *Request, *Response) error
-
-// UnaryServerInterceptor specifies the interceptor function for server request/response
-type UnaryServerInterceptor func(context.Context, Unmarshaler, *UnaryServerInfo, Method) (interface{}, error)
-
-// UnaryClientInterceptor specifies the interceptor function for client request/response
-type UnaryClientInterceptor func(context.Context, *Request, *Response, *UnaryClientInfo, Invoker) error
-
-func defaultServerInterceptor(ctx context.Context, unmarshal Unmarshaler, info *UnaryServerInfo, method Method) (interface{}, error) {
-	return method(ctx, unmarshal)
-}
-
-func defaultClientInterceptor(ctx context.Context, req *Request, resp *Response, _ *UnaryClientInfo, invoker Invoker) error {
-	return invoker(ctx, req, resp)
-}

vendor/github.com/containerd/ttrpc/metadata.go

@@ -1,107 +0,0 @@
-/*
-   Copyright The containerd Authors.
-
-   Licensed under the Apache License, Version 2.0 (the "License");
-   you may not use this file except in compliance with the License.
-   You may obtain a copy of the License at
-
-       http://www.apache.org/licenses/LICENSE-2.0
-
-   Unless required by applicable law or agreed to in writing, software
-   distributed under the License is distributed on an "AS IS" BASIS,
-   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-   See the License for the specific language governing permissions and
-   limitations under the License.
-*/
-
-package ttrpc
-
-import (
-	"context"
-	"strings"
-)
-
-// MD is the user type for ttrpc metadata
-type MD map[string][]string
-
-// Get returns the metadata for a given key when they exist.
-// If there is no metadata, a nil slice and false are returned.
-func (m MD) Get(key string) ([]string, bool) {
-	key = strings.ToLower(key)
-	list, ok := m[key]
-	if !ok || len(list) == 0 {
-		return nil, false
-	}
-
-	return list, true
-}
-
-// Set sets the provided values for a given key.
-// The values will overwrite any existing values.
-// If no values provided, a key will be deleted.
-func (m MD) Set(key string, values ...string) {
-	key = strings.ToLower(key)
-	if len(values) == 0 {
-		delete(m, key)
-		return
-	}
-	m[key] = values
-}
-
-// Append appends additional values to the given key.
-func (m MD) Append(key string, values ...string) {
-	key = strings.ToLower(key)
-	if len(values) == 0 {
-		return
-	}
-	current, ok := m[key]
-	if ok {
-		m.Set(key, append(current, values...)...)
-	} else {
-		m.Set(key, values...)
-	}
-}
-
-func (m MD) setRequest(r *Request) {
-	for k, values := range m {
-		for _, v := range values {
-			r.Metadata = append(r.Metadata, &KeyValue{
-				Key:   k,
-				Value: v,
-			})
-		}
-	}
-}
-
-func (m MD) fromRequest(r *Request) {
-	for _, kv := range r.Metadata {
-		m[kv.Key] = append(m[kv.Key], kv.Value)
-	}
-}
-
-type metadataKey struct{}
-
-// GetMetadata retrieves metadata from context.Context (previously attached with WithMetadata)
-func GetMetadata(ctx context.Context) (MD, bool) {
-	metadata, ok := ctx.Value(metadataKey{}).(MD)
-	return metadata, ok
-}
-
-// GetMetadataValue gets a specific metadata value by name from context.Context
-func GetMetadataValue(ctx context.Context, name string) (string, bool) {
-	metadata, ok := GetMetadata(ctx)
-	if !ok {
-		return "", false
-	}
-
-	if list, ok := metadata.Get(name); ok {
-		return list[0], true
-	}
-
-	return "", false
-}
-
-// WithMetadata attaches metadata map to a context.Context
-func WithMetadata(ctx context.Context, md MD) context.Context {
-	return context.WithValue(ctx, metadataKey{}, md)
-}

vendor/github.com/containerd/ttrpc/server.go

@@ -1,500 +0,0 @@
-/*
-   Copyright The containerd Authors.
-
-   Licensed under the Apache License, Version 2.0 (the "License");
-   you may not use this file except in compliance with the License.
-   You may obtain a copy of the License at
-
-       http://www.apache.org/licenses/LICENSE-2.0
-
-   Unless required by applicable law or agreed to in writing, software
-   distributed under the License is distributed on an "AS IS" BASIS,
-   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-   See the License for the specific language governing permissions and
-   limitations under the License.
-*/
-
-package ttrpc
-
-import (
-	"context"
-	"io"
-	"math/rand"
-	"net"
-	"sync"
-	"sync/atomic"
-	"time"
-
-	"github.com/pkg/errors"
-	"github.com/sirupsen/logrus"
-	"google.golang.org/grpc/codes"
-	"google.golang.org/grpc/status"
-)
-
-var (
-	ErrServerClosed = errors.New("ttrpc: server closed")
-)
-
-type Server struct {
-	config   *serverConfig
-	services *serviceSet
-	codec    codec
-
-	mu          sync.Mutex
-	listeners   map[net.Listener]struct{}
-	connections map[*serverConn]struct{} // all connections to current state
-	done        chan struct{}            // marks point at which we stop serving requests
-}
-
-func NewServer(opts ...ServerOpt) (*Server, error) {
-	config := &serverConfig{}
-	for _, opt := range opts {
-		if err := opt(config); err != nil {
-			return nil, err
-		}
-	}
-	if config.interceptor == nil {
-		config.interceptor = defaultServerInterceptor
-	}
-
-	return &Server{
-		config:      config,
-		services:    newServiceSet(config.interceptor),
-		done:        make(chan struct{}),
-		listeners:   make(map[net.Listener]struct{}),
-		connections: make(map[*serverConn]struct{}),
-	}, nil
-}
-
-func (s *Server) Register(name string, methods map[string]Method) {
-	s.services.register(name, methods)
-}
-
-func (s *Server) Serve(ctx context.Context, l net.Listener) error {
-	s.addListener(l)
-	defer s.closeListener(l)
-
-	var (
-		backoff    time.Duration
-		handshaker = s.config.handshaker
-	)
-
-	if handshaker == nil {
-		handshaker = handshakerFunc(noopHandshake)
-	}
-
-	for {
-		conn, err := l.Accept()
-		if err != nil {
-			select {
-			case <-s.done:
-				return ErrServerClosed
-			default:
-			}
-
-			if terr, ok := err.(interface {
-				Temporary() bool
-			}); ok && terr.Temporary() {
-				if backoff == 0 {
-					backoff = time.Millisecond
-				} else {
-					backoff *= 2
-				}
-
-				if max := time.Second; backoff > max {
-					backoff = max
-				}
-
-				sleep := time.Duration(rand.Int63n(int64(backoff)))
-				logrus.WithError(err).Errorf("ttrpc: failed accept; backoff %v", sleep)
-				time.Sleep(sleep)
-				continue
-			}
-
-			return err
-		}
-
-		backoff = 0
-
-		approved, handshake, err := handshaker.Handshake(ctx, conn)
-		if err != nil {
-			logrus.WithError(err).Errorf("ttrpc: refusing connection after handshake")
-			conn.Close()
-			continue
-		}
-
-		sc := s.newConn(approved, handshake)
-		go sc.run(ctx)
-	}
-}
-
-func (s *Server) Shutdown(ctx context.Context) error {
-	s.mu.Lock()
-	select {
-	case <-s.done:
-	default:
-		// protected by mutex
-		close(s.done)
-	}
-	lnerr := s.closeListeners()
-	s.mu.Unlock()
-
-	ticker := time.NewTicker(200 * time.Millisecond)
-	defer ticker.Stop()
-	for {
-		if s.closeIdleConns() {
-			return lnerr
-		}
-		select {
-		case <-ctx.Done():
-			return ctx.Err()
-		case <-ticker.C:
-		}
-	}
-}
-
-// Close the server without waiting for active connections.
-func (s *Server) Close() error {
-	s.mu.Lock()
-	defer s.mu.Unlock()
-
-	select {
-	case <-s.done:
-	default:
-		// protected by mutex
-		close(s.done)
-	}
-
-	err := s.closeListeners()
-	for c := range s.connections {
-		c.close()
-		delete(s.connections, c)
-	}
-
-	return err
-}
-
-func (s *Server) addListener(l net.Listener) {
-	s.mu.Lock()
-	defer s.mu.Unlock()
-	s.listeners[l] = struct{}{}
-}
-
-func (s *Server) closeListener(l net.Listener) error {
-	s.mu.Lock()
-	defer s.mu.Unlock()
-
-	return s.closeListenerLocked(l)
-}
-
-func (s *Server) closeListenerLocked(l net.Listener) error {
-	defer delete(s.listeners, l)
-	return l.Close()
-}
-
-func (s *Server) closeListeners() error {
-	var err error
-	for l := range s.listeners {
-		if cerr := s.closeListenerLocked(l); cerr != nil && err == nil {
-			err = cerr
-		}
-	}
-	return err
-}
-
-func (s *Server) addConnection(c *serverConn) {
-	s.mu.Lock()
-	defer s.mu.Unlock()
-
-	s.connections[c] = struct{}{}
-}
-
-func (s *Server) delConnection(c *serverConn) {
-	s.mu.Lock()
-	defer s.mu.Unlock()
-
-	delete(s.connections, c)
-}
-
-func (s *Server) countConnection() int {
-	s.mu.Lock()
-	defer s.mu.Unlock()
-
-	return len(s.connections)
-}
-
-func (s *Server) closeIdleConns() bool {
-	s.mu.Lock()
-	defer s.mu.Unlock()
-	quiescent := true
-	for c := range s.connections {
-		st, ok := c.getState()
-		if !ok || st != connStateIdle {
-			quiescent = false
-			continue
-		}
-		c.close()
-		delete(s.connections, c)
-	}
-	return quiescent
-}
-
-type connState int
-
-const (
-	connStateActive = iota + 1 // outstanding requests
-	connStateIdle              // no requests
-	connStateClosed            // closed connection
-)
-
-func (cs connState) String() string {
-	switch cs {
-	case connStateActive:
-		return "active"
-	case connStateIdle:
-		return "idle"
-	case connStateClosed:
-		return "closed"
-	default:
-		return "unknown"
-	}
-}
-
-func (s *Server) newConn(conn net.Conn, handshake interface{}) *serverConn {
-	c := &serverConn{
-		server:    s,
-		conn:      conn,
-		handshake: handshake,
-		shutdown:  make(chan struct{}),
-	}
-	c.setState(connStateIdle)
-	s.addConnection(c)
-	return c
-}
-
-type serverConn struct {
-	server    *Server
-	conn      net.Conn
-	handshake interface{} // data from handshake, not used for now
-	state     atomic.Value
-
-	shutdownOnce sync.Once
-	shutdown     chan struct{} // forced shutdown, used by close
-}
-
-func (c *serverConn) getState() (connState, bool) {
-	cs, ok := c.state.Load().(connState)
-	return cs, ok
-}
-
-func (c *serverConn) setState(newstate connState) {
-	c.state.Store(newstate)
-}
-
-func (c *serverConn) close() error {
-	c.shutdownOnce.Do(func() {
-		close(c.shutdown)
-	})
-
-	return nil
-}
-
-func (c *serverConn) run(sctx context.Context) {
-	type (
-		request struct {
-			id  uint32
-			req *Request
-		}
-
-		response struct {
-			id   uint32
-			resp *Response
-		}
-	)
-
-	var (
-		ch          = newChannel(c.conn)
-		ctx, cancel = context.WithCancel(sctx)
-		active      int
-		state       connState = connStateIdle
-		responses             = make(chan response)
-		requests              = make(chan request)
-		recvErr               = make(chan error, 1)
-		shutdown              = c.shutdown
-		done                  = make(chan struct{})
-	)
-
-	defer c.conn.Close()
-	defer cancel()
-	defer close(done)
-	defer c.server.delConnection(c)
-
-	go func(recvErr chan error) {
-		defer close(recvErr)
-		sendImmediate := func(id uint32, st *status.Status) bool {
-			select {
-			case responses <- response{
-				// even though we've had an invalid stream id, we send it
-				// back on the same stream id so the client knows which
-				// stream id was bad.
-				id: id,
-				resp: &Response{
-					Status: st.Proto(),
-				},
-			}:
-				return true
-			case <-c.shutdown:
-				return false
-			case <-done:
-				return false
-			}
-		}
-
-		for {
-			select {
-			case <-c.shutdown:
-				return
-			case <-done:
-				return
-			default: // proceed
-			}
-
-			mh, p, err := ch.recv()
-			if err != nil {
-				status, ok := status.FromError(err)
-				if !ok {
-					recvErr <- err
-					return
-				}
-
-				// in this case, we send an error for that particular message
-				// when the status is defined.
-				if !sendImmediate(mh.StreamID, status) {
-					return
-				}
-
-				continue
-			}
-
-			if mh.Type != messageTypeRequest {
-				// we must ignore this for future compat.
-				continue
-			}
-
-			var req Request
-			if err := c.server.codec.Unmarshal(p, &req); err != nil {
-				ch.putmbuf(p)
-				if !sendImmediate(mh.StreamID, status.Newf(codes.InvalidArgument, "unmarshal request error: %v", err)) {
-					return
-				}
-				continue
-			}
-			ch.putmbuf(p)
-
-			if mh.StreamID%2 != 1 {
-				// enforce odd client initiated identifiers.
-				if !sendImmediate(mh.StreamID, status.Newf(codes.InvalidArgument, "StreamID must be odd for client initiated streams")) {
-					return
-				}
-				continue
-			}
-
-			// Forward the request to the main loop. We don't wait on s.done
-			// because we have already accepted the client request.
-			select {
-			case requests <- request{
-				id:  mh.StreamID,
-				req: &req,
-			}:
-			case <-done:
-				return
-			}
-		}
-	}(recvErr)
-
-	for {
-		newstate := state
-		switch {
-		case active > 0:
-			newstate = connStateActive
-			shutdown = nil
-		case active == 0:
-			newstate = connStateIdle
-			shutdown = c.shutdown // only enable this branch in idle mode
-		}
-
-		if newstate != state {
-			c.setState(newstate)
-			state = newstate
-		}
-
-		select {
-		case request := <-requests:
-			active++
-			go func(id uint32) {
-				ctx, cancel := getRequestContext(ctx, request.req)
-				defer cancel()
-
-				p, status := c.server.services.call(ctx, request.req.Service, request.req.Method, request.req.Payload)
-				resp := &Response{
-					Status:  status.Proto(),
-					Payload: p,
-				}
-
-				select {
-				case responses <- response{
-					id:   id,
-					resp: resp,
-				}:
-				case <-done:
-				}
-			}(request.id)
-		case response := <-responses:
-			p, err := c.server.codec.Marshal(response.resp)
-			if err != nil {
-				logrus.WithError(err).Error("failed marshaling response")
-				return
-			}
-
-			if err := ch.send(response.id, messageTypeResponse, p); err != nil {
-				logrus.WithError(err).Error("failed sending message on channel")
-				return
-			}
-
-			active--
-		case err := <-recvErr:
-			// TODO(stevvooe): Not wildly clear what we should do in this
-			// branch. Basically, it means that we are no longer receiving
-			// requests due to a terminal error.
-			recvErr = nil // connection is now "closing"
-			if err == io.EOF || err == io.ErrUnexpectedEOF {
-				// The client went away and we should stop processing
-				// requests, so that the client connection is closed
-				return
-			}
-			if err != nil {
-				logrus.WithError(err).Error("error receiving message")
-			}
-		case <-shutdown:
-			return
-		}
-	}
-}
-
-var noopFunc = func() {}
-
-func getRequestContext(ctx context.Context, req *Request) (retCtx context.Context, cancel func()) {
-	if len(req.Metadata) > 0 {
-		md := MD{}
-		md.fromRequest(req)
-		ctx = WithMetadata(ctx, md)
-	}
-
-	cancel = noopFunc
-	if req.TimeoutNano == 0 {
-		return ctx, cancel
-	}
-
-	ctx, cancel = context.WithTimeout(ctx, time.Duration(req.TimeoutNano))
-	return ctx, cancel
-}

vendor/github.com/containerd/ttrpc/services.go

@@ -1,165 +0,0 @@
-/*
-   Copyright The containerd Authors.
-
-   Licensed under the Apache License, Version 2.0 (the "License");
-   you may not use this file except in compliance with the License.
-   You may obtain a copy of the License at
-
-       http://www.apache.org/licenses/LICENSE-2.0
-
-   Unless required by applicable law or agreed to in writing, software
-   distributed under the License is distributed on an "AS IS" BASIS,
-   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-   See the License for the specific language governing permissions and
-   limitations under the License.
-*/
-
-package ttrpc
-
-import (
-	"context"
-	"io"
-	"os"
-	"path"
-	"unsafe"
-
-	"github.com/gogo/protobuf/proto"
-	"github.com/pkg/errors"
-	"google.golang.org/grpc/codes"
-	"google.golang.org/grpc/status"
-)
-
-type Method func(ctx context.Context, unmarshal func(interface{}) error) (interface{}, error)
-
-type ServiceDesc struct {
-	Methods map[string]Method
-
-	// TODO(stevvooe): Add stream support.
-}
-
-type serviceSet struct {
-	services    map[string]ServiceDesc
-	interceptor UnaryServerInterceptor
-}
-
-func newServiceSet(interceptor UnaryServerInterceptor) *serviceSet {
-	return &serviceSet{
-		services:    make(map[string]ServiceDesc),
-		interceptor: interceptor,
-	}
-}
-
-func (s *serviceSet) register(name string, methods map[string]Method) {
-	if _, ok := s.services[name]; ok {
-		panic(errors.Errorf("duplicate service %v registered", name))
-	}
-
-	s.services[name] = ServiceDesc{
-		Methods: methods,
-	}
-}
-
-func (s *serviceSet) call(ctx context.Context, serviceName, methodName string, p []byte) ([]byte, *status.Status) {
-	p, err := s.dispatch(ctx, serviceName, methodName, p)
-	st, ok := status.FromError(err)
-	if !ok {
-		st = status.New(convertCode(err), err.Error())
-	}
-
-	return p, st
-}
-
-func (s *serviceSet) dispatch(ctx context.Context, serviceName, methodName string, p []byte) ([]byte, error) {
-	method, err := s.resolve(serviceName, methodName)
-	if err != nil {
-		return nil, err
-	}
-
-	unmarshal := func(obj interface{}) error {
-		switch v := obj.(type) {
-		case proto.Message:
-			if err := proto.Unmarshal(p, v); err != nil {
-				return status.Errorf(codes.Internal, "ttrpc: error unmarshalling payload: %v", err.Error())
-			}
-		default:
-			return status.Errorf(codes.Internal, "ttrpc: error unsupported request type: %T", v)
-		}
-		return nil
-	}
-
-	info := &UnaryServerInfo{
-		FullMethod: fullPath(serviceName, methodName),
-	}
-
-	resp, err := s.interceptor(ctx, unmarshal, info, method)
-	if err != nil {
-		return nil, err
-	}
-
-	if isNil(resp) {
-		return nil, errors.New("ttrpc: marshal called with nil")
-	}
-
-	switch v := resp.(type) {
-	case proto.Message:
-		r, err := proto.Marshal(v)
-		if err != nil {
-			return nil, status.Errorf(codes.Internal, "ttrpc: error marshaling payload: %v", err.Error())
-		}
-
-		return r, nil
-	default:
-		return nil, status.Errorf(codes.Internal, "ttrpc: error unsupported response type: %T", v)
-	}
-}
-
-func (s *serviceSet) resolve(service, method string) (Method, error) {
-	srv, ok := s.services[service]
-	if !ok {
-		return nil, status.Errorf(codes.NotFound, "service %v", service)
-	}
-
-	mthd, ok := srv.Methods[method]
-	if !ok {
-		return nil, status.Errorf(codes.NotFound, "method %v", method)
-	}
-
-	return mthd, nil
-}
-
-// convertCode maps stdlib go errors into grpc space.
-//
-// This is ripped from the grpc-go code base.
-func convertCode(err error) codes.Code {
-	switch err {
-	case nil:
-		return codes.OK
-	case io.EOF:
-		return codes.OutOfRange
-	case io.ErrClosedPipe, io.ErrNoProgress, io.ErrShortBuffer, io.ErrShortWrite, io.ErrUnexpectedEOF:
-		return codes.FailedPrecondition
-	case os.ErrInvalid:
-		return codes.InvalidArgument
-	case context.Canceled:
-		return codes.Canceled
-	case context.DeadlineExceeded:
-		return codes.DeadlineExceeded
-	}
-	switch {
-	case os.IsExist(err):
-		return codes.AlreadyExists
-	case os.IsNotExist(err):
-		return codes.NotFound
-	case os.IsPermission(err):
-		return codes.PermissionDenied
-	}
-	return codes.Unknown
-}
-
-func fullPath(service, method string) string {
-	return "/" + path.Join(service, method)
-}
-
-func isNil(resp interface{}) bool {
-	return (*[2]uintptr)(unsafe.Pointer(&resp))[1] == 0
-}

vendor/github.com/containerd/ttrpc/types.go

@@ -1,63 +0,0 @@
-/*
-   Copyright The containerd Authors.
-
-   Licensed under the Apache License, Version 2.0 (the "License");
-   you may not use this file except in compliance with the License.
-   You may obtain a copy of the License at
-
-       http://www.apache.org/licenses/LICENSE-2.0
-
-   Unless required by applicable law or agreed to in writing, software
-   distributed under the License is distributed on an "AS IS" BASIS,
-   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-   See the License for the specific language governing permissions and
-   limitations under the License.
-*/
-
-package ttrpc
-
-import (
-	"fmt"
-
-	spb "google.golang.org/genproto/googleapis/rpc/status"
-)
-
-type Request struct {
-	Service     string      `protobuf:"bytes,1,opt,name=service,proto3"`
-	Method      string      `protobuf:"bytes,2,opt,name=method,proto3"`
-	Payload     []byte      `protobuf:"bytes,3,opt,name=payload,proto3"`
-	TimeoutNano int64       `protobuf:"varint,4,opt,name=timeout_nano,proto3"`
-	Metadata    []*KeyValue `protobuf:"bytes,5,rep,name=metadata,proto3"`
-}
-
-func (r *Request) Reset()         { *r = Request{} }
-func (r *Request) String() string { return fmt.Sprintf("%+#v", r) }
-func (r *Request) ProtoMessage()  {}
-
-type Response struct {
-	Status  *spb.Status `protobuf:"bytes,1,opt,name=status,proto3"`
-	Payload []byte      `protobuf:"bytes,2,opt,name=payload,proto3"`
-}
-
-func (r *Response) Reset()         { *r = Response{} }
-func (r *Response) String() string { return fmt.Sprintf("%+#v", r) }
-func (r *Response) ProtoMessage()  {}
-
-type StringList struct {
-	List []string `protobuf:"bytes,1,rep,name=list,proto3"`
-}
-
-func (r *StringList) Reset()         { *r = StringList{} }
-func (r *StringList) String() string { return fmt.Sprintf("%+#v", r) }
-func (r *StringList) ProtoMessage()  {}
-
-func makeStringList(item ...string) StringList { return StringList{List: item} }
-
-type KeyValue struct {
-	Key   string `protobuf:"bytes,1,opt,name=key,proto3"`
-	Value string `protobuf:"bytes,2,opt,name=value,proto3"`
-}
-
-func (m *KeyValue) Reset()         { *m = KeyValue{} }
-func (*KeyValue) ProtoMessage()    {}
-func (m *KeyValue) String() string { return fmt.Sprintf("%+#v", m) }

vendor/github.com/containerd/ttrpc/unixcreds_linux.go

@@ -1,108 +0,0 @@
-/*
-   Copyright The containerd Authors.
-
-   Licensed under the Apache License, Version 2.0 (the "License");
-   you may not use this file except in compliance with the License.
-   You may obtain a copy of the License at
-
-       http://www.apache.org/licenses/LICENSE-2.0
-
-   Unless required by applicable law or agreed to in writing, software
-   distributed under the License is distributed on an "AS IS" BASIS,
-   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-   See the License for the specific language governing permissions and
-   limitations under the License.
-*/
-
-package ttrpc
-
-import (
-	"context"
-	"net"
-	"os"
-	"syscall"
-
-	"github.com/pkg/errors"
-	"golang.org/x/sys/unix"
-)
-
-type UnixCredentialsFunc func(*unix.Ucred) error
-
-func (fn UnixCredentialsFunc) Handshake(ctx context.Context, conn net.Conn) (net.Conn, interface{}, error) {
-	uc, err := requireUnixSocket(conn)
-	if err != nil {
-		return nil, nil, errors.Wrap(err, "ttrpc.UnixCredentialsFunc: require unix socket")
-	}
-
-	rs, err := uc.SyscallConn()
-	if err != nil {
-		return nil, nil, errors.Wrap(err, "ttrpc.UnixCredentialsFunc: (net.UnixConn).SyscallConn failed")
-	}
-	var (
-		ucred    *unix.Ucred
-		ucredErr error
-	)
-	if err := rs.Control(func(fd uintptr) {
-		ucred, ucredErr = unix.GetsockoptUcred(int(fd), unix.SOL_SOCKET, unix.SO_PEERCRED)
-	}); err != nil {
-		return nil, nil, errors.Wrapf(err, "ttrpc.UnixCredentialsFunc: (*syscall.RawConn).Control failed")
-	}
-
-	if ucredErr != nil {
-		return nil, nil, errors.Wrapf(err, "ttrpc.UnixCredentialsFunc: failed to retrieve socket peer credentials")
-	}
-
-	if err := fn(ucred); err != nil {
-		return nil, nil, errors.Wrapf(err, "ttrpc.UnixCredentialsFunc: credential check failed")
-	}
-
-	return uc, ucred, nil
-}
-
-// UnixSocketRequireUidGid requires specific *effective* UID/GID, rather than the real UID/GID.
-//
-// For example, if a daemon binary is owned by the root (UID 0) with SUID bit but running as an
-// unprivileged user (UID 1001), the effective UID becomes 0, and the real UID becomes 1001.
-// So calling this function with uid=0 allows a connection from effective UID 0 but rejects
-// a connection from effective UID 1001.
-//
-// See socket(7), SO_PEERCRED: "The returned credentials are those that were in effect at the time of the call to connect(2) or socketpair(2)."
-func UnixSocketRequireUidGid(uid, gid int) UnixCredentialsFunc {
-	return func(ucred *unix.Ucred) error {
-		return requireUidGid(ucred, uid, gid)
-	}
-}
-
-func UnixSocketRequireRoot() UnixCredentialsFunc {
-	return UnixSocketRequireUidGid(0, 0)
-}
-
-// UnixSocketRequireSameUser resolves the current effective unix user and returns a
-// UnixCredentialsFunc that will validate incoming unix connections against the
-// current credentials.
-//
-// This is useful when using abstract sockets that are accessible by all users.
-func UnixSocketRequireSameUser() UnixCredentialsFunc {
-	euid, egid := os.Geteuid(), os.Getegid()
-	return UnixSocketRequireUidGid(euid, egid)
-}
-
-func requireRoot(ucred *unix.Ucred) error {
-	return requireUidGid(ucred, 0, 0)
-}
-
-func requireUidGid(ucred *unix.Ucred, uid, gid int) error {
-	if (uid != -1 && uint32(uid) != ucred.Uid) || (gid != -1 && uint32(gid) != ucred.Gid) {
-		return errors.Wrap(syscall.EPERM, "ttrpc: invalid credentials")
-	}
-	return nil
-}
-
-func requireUnixSocket(conn net.Conn) (*net.UnixConn, error) {
-	uc, ok := conn.(*net.UnixConn)
-	if !ok {
-		return nil, errors.New("a unix socket connection is required")
-	}
-
-	return uc, nil
-}

vendor/github.com/containerd/typeurl/.gitignore

@@ -1,2 +0,0 @@
-*.test
-coverage.txt

vendor/github.com/containerd/typeurl/LICENSE

@@ -1,191 +0,0 @@
-
-                                 Apache License
-                           Version 2.0, January 2004
-                        https://www.apache.org/licenses/
-
-   TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
-
-   1. Definitions.
-
-      "License" shall mean the terms and conditions for use, reproduction,
-      and distribution as defined by Sections 1 through 9 of this document.
-
-      "Licensor" shall mean the copyright owner or entity authorized by
-      the copyright owner that is granting the License.
-
-      "Legal Entity" shall mean the union of the acting entity and all
-      other entities that control, are controlled by, or are under common
-      control with that entity. For the purposes of this definition,
-      "control" means (i) the power, direct or indirect, to cause the
-      direction or management of such entity, whether by contract or
-      otherwise, or (ii) ownership of fifty percent (50%) or more of the
-      outstanding shares, or (iii) beneficial ownership of such entity.
-
-      "You" (or "Your") shall mean an individual or Legal Entity
-      exercising permissions granted by this License.
-
-      "Source" form shall mean the preferred form for making modifications,
-      including but not limited to software source code, documentation
-      source, and configuration files.
-
-      "Object" form shall mean any form resulting from mechanical
-      transformation or translation of a Source form, including but
-      not limited to compiled object code, generated documentation,
-      and conversions to other media types.
-
-      "Work" shall mean the work of authorship, whether in Source or
-      Object form, made available under the License, as indicated by a
-      copyright notice that is included in or attached to the work
-      (an example is provided in the Appendix below).
-
-      "Derivative Works" shall mean any work, whether in Source or Object
-      form, that is based on (or derived from) the Work and for which the
-      editorial revisions, annotations, elaborations, or other modifications
-      represent, as a whole, an original work of authorship. For the purposes
-      of this License, Derivative Works shall not include works that remain
-      separable from, or merely link (or bind by name) to the interfaces of,
-      the Work and Derivative Works thereof.
-
-      "Contribution" shall mean any work of authorship, including
-      the original version of the Work and any modifications or additions
-      to that Work or Derivative Works thereof, that is intentionally
-      submitted to Licensor for inclusion in the Work by the copyright owner
-      or by an individual or Legal Entity authorized to submit on behalf of
-      the copyright owner. For the purposes of this definition, "submitted"
-      means any form of electronic, verbal, or written communication sent
-      to the Licensor or its representatives, including but not limited to
-      communication on electronic mailing lists, source code control systems,
-      and issue tracking systems that are managed by, or on behalf of, the
-      Licensor for the purpose of discussing and improving the Work, but
-      excluding communication that is conspicuously marked or otherwise
-      designated in writing by the copyright owner as "Not a Contribution."
-
-      "Contributor" shall mean Licensor and any individual or Legal Entity
-      on behalf of whom a Contribution has been received by Licensor and
-      subsequently incorporated within the Work.
-
-   2. Grant of Copyright License. Subject to the terms and conditions of
-      this License, each Contributor hereby grants to You a perpetual,
-      worldwide, non-exclusive, no-charge, royalty-free, irrevocable
-      copyright license to reproduce, prepare Derivative Works of,
-      publicly display, publicly perform, sublicense, and distribute the
-      Work and such Derivative Works in Source or Object form.
-
-   3. Grant of Patent License. Subject to the terms and conditions of
-      this License, each Contributor hereby grants to You a perpetual,
-      worldwide, non-exclusive, no-charge, royalty-free, irrevocable
-      (except as stated in this section) patent license to make, have made,
-      use, offer to sell, sell, import, and otherwise transfer the Work,
-      where such license applies only to those patent claims licensable
-      by such Contributor that are necessarily infringed by their
-      Contribution(s) alone or by combination of their Contribution(s)
-      with the Work to which such Contribution(s) was submitted. If You
-      institute patent litigation against any entity (including a
-      cross-claim or counterclaim in a lawsuit) alleging that the Work
-      or a Contribution incorporated within the Work constitutes direct
-      or contributory patent infringement, then any patent licenses
-      granted to You under this License for that Work shall terminate
-      as of the date such litigation is filed.
-
-   4. Redistribution. You may reproduce and distribute copies of the
-      Work or Derivative Works thereof in any medium, with or without
-      modifications, and in Source or Object form, provided that You
-      meet the following conditions:
-
-      (a) You must give any other recipients of the Work or
-          Derivative Works a copy of this License; and
-
-      (b) You must cause any modified files to carry prominent notices
-          stating that You changed the files; and
-
-      (c) You must retain, in the Source form of any Derivative Works
-          that You distribute, all copyright, patent, trademark, and
-          attribution notices from the Source form of the Work,
-          excluding those notices that do not pertain to any part of
-          the Derivative Works; and
-
-      (d) If the Work includes a "NOTICE" text file as part of its
-          distribution, then any Derivative Works that You distribute must
-          include a readable copy of the attribution notices contained
-          within such NOTICE file, excluding those notices that do not
-          pertain to any part of the Derivative Works, in at least one
-          of the following places: within a NOTICE text file distributed
-          as part of the Derivative Works; within the Source form or
-          documentation, if provided along with the Derivative Works; or,
-          within a display generated by the Derivative Works, if and
-          wherever such third-party notices normally appear. The contents
-          of the NOTICE file are for informational purposes only and
-          do not modify the License. You may add Your own attribution
-          notices within Derivative Works that You distribute, alongside
-          or as an addendum to the NOTICE text from the Work, provided
-          that such additional attribution notices cannot be construed
-          as modifying the License.
-
-      You may add Your own copyright statement to Your modifications and
-      may provide additional or different license terms and conditions
-      for use, reproduction, or distribution of Your modifications, or
-      for any such Derivative Works as a whole, provided Your use,
-      reproduction, and distribution of the Work otherwise complies with
-      the conditions stated in this License.
-
-   5. Submission of Contributions. Unless You explicitly state otherwise,
-      any Contribution intentionally submitted for inclusion in the Work
-      by You to the Licensor shall be under the terms and conditions of
-      this License, without any additional terms or conditions.
-      Notwithstanding the above, nothing herein shall supersede or modify
-      the terms of any separate license agreement you may have executed
-      with Licensor regarding such Contributions.
-
-   6. Trademarks. This License does not grant permission to use the trade
-      names, trademarks, service marks, or product names of the Licensor,
-      except as required for reasonable and customary use in describing the
-      origin of the Work and reproducing the content of the NOTICE file.
-
-   7. Disclaimer of Warranty. Unless required by applicable law or
-      agreed to in writing, Licensor provides the Work (and each
-      Contributor provides its Contributions) on an "AS IS" BASIS,
-      WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
-      implied, including, without limitation, any warranties or conditions
-      of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
-      PARTICULAR PURPOSE. You are solely responsible for determining the
-      appropriateness of using or redistributing the Work and assume any
-      risks associated with Your exercise of permissions under this License.
-
-   8. Limitation of Liability. In no event and under no legal theory,
-      whether in tort (including negligence), contract, or otherwise,
-      unless required by applicable law (such as deliberate and grossly
-      negligent acts) or agreed to in writing, shall any Contributor be
-      liable to You for damages, including any direct, indirect, special,
-      incidental, or consequential damages of any character arising as a
-      result of this License or out of the use or inability to use the
-      Work (including but not limited to damages for loss of goodwill,
-      work stoppage, computer failure or malfunction, or any and all
-      other commercial damages or losses), even if such Contributor
-      has been advised of the possibility of such damages.
-
-   9. Accepting Warranty or Additional Liability. While redistributing
-      the Work or Derivative Works thereof, You may choose to offer,
-      and charge a fee for, acceptance of support, warranty, indemnity,
-      or other liability obligations and/or rights consistent with this
-      License. However, in accepting such obligations, You may act only
-      on Your own behalf and on Your sole responsibility, not on behalf
-      of any other Contributor, and only if You agree to indemnify,
-      defend, and hold each Contributor harmless for any liability
-      incurred by, or claims asserted against, such Contributor by reason
-      of your accepting any such warranty or additional liability.
-
-   END OF TERMS AND CONDITIONS
-
-   Copyright The containerd Authors
-
-   Licensed under the Apache License, Version 2.0 (the "License");
-   you may not use this file except in compliance with the License.
-   You may obtain a copy of the License at
-
-       https://www.apache.org/licenses/LICENSE-2.0
-
-   Unless required by applicable law or agreed to in writing, software
-   distributed under the License is distributed on an "AS IS" BASIS,
-   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-   See the License for the specific language governing permissions and
-   limitations under the License.

vendor/github.com/containerd/typeurl/README.md

@@ -1,20 +0,0 @@
-# typeurl
-
-[![PkgGoDev](https://pkg.go.dev/badge/github.com/containerd/typeurl)](https://pkg.go.dev/github.com/containerd/typeurl)
-[![Build Status](https://github.com/containerd/typeurl/workflows/CI/badge.svg)](https://github.com/containerd/typeurl/actions?query=workflow%3ACI)
-[![codecov](https://codecov.io/gh/containerd/typeurl/branch/master/graph/badge.svg)](https://codecov.io/gh/containerd/typeurl)
-[![Go Report Card](https://goreportcard.com/badge/github.com/containerd/typeurl)](https://goreportcard.com/report/github.com/containerd/typeurl)
-
-A Go package for managing the registration, marshaling, and unmarshaling of encoded types.
-
-This package helps when types are sent over a GRPC API and marshaled as a [protobuf.Any](https://github.com/gogo/protobuf/blob/master/protobuf/google/protobuf/any.proto).
-
-## Project details
-
-**typeurl** is a containerd sub-project, licensed under the [Apache 2.0 license](./LICENSE).
-As a containerd sub-project, you will find the:
- * [Project governance](https://github.com/containerd/project/blob/master/GOVERNANCE.md),
- * [Maintainers](https://github.com/containerd/project/blob/master/MAINTAINERS),
- * and [Contributing guidelines](https://github.com/containerd/project/blob/master/CONTRIBUTING.md)
-
-information in our [`containerd/project`](https://github.com/containerd/project) repository.

vendor/github.com/containerd/typeurl/doc.go

@@ -1,83 +0,0 @@
-/*
-   Copyright The containerd Authors.
-
-   Licensed under the Apache License, Version 2.0 (the "License");
-   you may not use this file except in compliance with the License.
-   You may obtain a copy of the License at
-
-       http://www.apache.org/licenses/LICENSE-2.0
-
-   Unless required by applicable law or agreed to in writing, software
-   distributed under the License is distributed on an "AS IS" BASIS,
-   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-   See the License for the specific language governing permissions and
-   limitations under the License.
-*/
-
-package typeurl
-
-// Package typeurl assists with managing the registration, marshaling, and
-// unmarshaling of types encoded as protobuf.Any.
-//
-// A protobuf.Any is a proto message that can contain any arbitrary data. It
-// consists of two components, a TypeUrl and a Value, and its proto definition
-// looks like this:
-//
-//   message Any {
-//     string type_url = 1;
-//     bytes value = 2;
-//   }
-//
-// The TypeUrl is used to distinguish the contents from other proto.Any
-// messages. This typeurl library manages these URLs to enable automagic
-// marshaling and unmarshaling of the contents.
-//
-// For example, consider this go struct:
-//
-//   type Foo struct {
-//     Field1 string
-//     Field2 string
-//   }
-//
-// To use typeurl, types must first be registered. This is typically done in
-// the init function
-//
-//   func init() {
-//      typeurl.Register(&Foo{}, "Foo")
-//   }
-//
-// This will register the type Foo with the url path "Foo". The arguments to
-// Register are variadic, and are used to construct a url path. Consider this
-// example, from the github.com/containerd/containerd/client package:
-//
-//   func init() {
-//     const prefix = "types.containerd.io"
-//     // register TypeUrls for commonly marshaled external types
-//     major := strconv.Itoa(specs.VersionMajor)
-//     typeurl.Register(&specs.Spec{}, prefix, "opencontainers/runtime-spec", major, "Spec")
-//     // this function has more Register calls, which are elided.
-//   }
-//
-// This registers several types under a more complex url, which ends up mapping
-// to `types.containerd.io/opencontainers/runtime-spec/1/Spec` (or some other
-// value for major).
-//
-// Once a type is registered, it can be marshaled to a proto.Any message simply
-// by calling `MarshalAny`, like this:
-//
-//   foo := &Foo{Field1: "value1", Field2: "value2"}
-//   anyFoo, err := typeurl.MarshalAny(foo)
-//
-// MarshalAny will resolve the correct URL for the type. If the type in
-// question implements the proto.Message interface, then it will be marshaled
-// as a proto message. Otherwise, it will be marshaled as json. This means that
-// typeurl will work on any arbitrary data, whether or not it has a proto
-// definition, as long as it can be serialized to json.
-//
-// To unmarshal, the process is simply inverse:
-//
-//   iface, err := typeurl.UnmarshalAny(anyFoo)
-//   foo := iface.(*Foo)
-//
-// The correct type is automatically chosen from the type registry, and the
-// returned interface can be cast straight to that type.

vendor/github.com/containerd/typeurl/go.mod

@@ -1,8 +0,0 @@
-module github.com/containerd/typeurl
-
-go 1.13
-
-require (
-	github.com/gogo/protobuf v1.3.2
-	github.com/pkg/errors v0.9.1
-)

vendor/github.com/containerd/typeurl/go.sum

@@ -1,33 +0,0 @@
-github.com/gogo/protobuf v1.3.2 h1:Ov1cvc58UF3b5XjBnZv7+opcTcQFZebYjWzi34vdm4Q=
-github.com/gogo/protobuf v1.3.2/go.mod h1:P1XiOD3dCwIKUDQYPy72D8LYyHL2YPYrpS2s69NZV8Q=
-github.com/kisielk/errcheck v1.5.0/go.mod h1:pFxgyoBC7bSaBwPgfKdkLd5X25qrDl4LWUI2bnpBCr8=
-github.com/kisielk/gotool v1.0.0/go.mod h1:XhKaO+MFFWcvkIS/tQcRk01m1F5IRFswLeQ+oQHNcck=
-github.com/pkg/errors v0.9.1 h1:FEBLx1zS214owpjy7qsBeixbURkuhQAwrK5UwLGTwt4=
-github.com/pkg/errors v0.9.1/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINEl0=
-github.com/yuin/goldmark v1.1.27/go.mod h1:3hX8gzYuyVAZsxl0MRgGTJEmQBFcNTphYh9decYSb74=
-github.com/yuin/goldmark v1.2.1/go.mod h1:3hX8gzYuyVAZsxl0MRgGTJEmQBFcNTphYh9decYSb74=
-golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=
-golang.org/x/crypto v0.0.0-20191011191535-87dc89f01550/go.mod h1:yigFU9vqHzYiE8UmvKecakEJjdnWj3jj499lnFckfCI=
-golang.org/x/crypto v0.0.0-20200622213623-75b288015ac9/go.mod h1:LzIPMQfyMNhhGPhUkYOs5KpL4U8rLKemX1yGLhDgUto=
-golang.org/x/mod v0.2.0/go.mod h1:s0Qsj1ACt9ePp/hMypM3fl4fZqREWJwdYDEqhRiZZUA=
-golang.org/x/mod v0.3.0/go.mod h1:s0Qsj1ACt9ePp/hMypM3fl4fZqREWJwdYDEqhRiZZUA=
-golang.org/x/net v0.0.0-20190404232315-eb5bcb51f2a3/go.mod h1:t9HGtf8HONx5eT2rtn7q6eTqICYqUVnKs3thJo3Qplg=
-golang.org/x/net v0.0.0-20190620200207-3b0461eec859/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
-golang.org/x/net v0.0.0-20200226121028-0de0cce0169b/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
-golang.org/x/net v0.0.0-20201021035429-f5854403a974/go.mod h1:sp8m0HH+o8qH0wwXwYZr8TS3Oi6o0r6Gce1SSxlDquU=
-golang.org/x/sync v0.0.0-20190423024810-112230192c58/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
-golang.org/x/sync v0.0.0-20190911185100-cd5d95a43a6e/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
-golang.org/x/sync v0.0.0-20201020160332-67f06af15bc9/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
-golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
-golang.org/x/sys v0.0.0-20190412213103-97732733099d/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
-golang.org/x/sys v0.0.0-20200930185726-fdedc70b468f/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
-golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
-golang.org/x/text v0.3.3/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
-golang.org/x/tools v0.0.0-20180917221912-90fa682c2a6e/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
-golang.org/x/tools v0.0.0-20191119224855-298f0cb1881e/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo=
-golang.org/x/tools v0.0.0-20200619180055-7c47624df98f/go.mod h1:EkVYQZoAsY45+roYkvgYkIh4xh/qjgUK9TdY2XT94GE=
-golang.org/x/tools v0.0.0-20210106214847-113979e3529a/go.mod h1:emZCQorbCU4vsT4fOWvOPXz4eW1wZW4PmDk9uLelYpA=
-golang.org/x/xerrors v0.0.0-20190717185122-a985d3407aa7/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
-golang.org/x/xerrors v0.0.0-20191011141410-1b5146add898/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
-golang.org/x/xerrors v0.0.0-20191204190536-9bdfabe68543/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
-golang.org/x/xerrors v0.0.0-20200804184101-5ec99f83aff1/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=

vendor/github.com/containerd/typeurl/types.go

@@ -1,214 +0,0 @@
-/*
-   Copyright The containerd Authors.
-
-   Licensed under the Apache License, Version 2.0 (the "License");
-   you may not use this file except in compliance with the License.
-   You may obtain a copy of the License at
-
-       http://www.apache.org/licenses/LICENSE-2.0
-
-   Unless required by applicable law or agreed to in writing, software
-   distributed under the License is distributed on an "AS IS" BASIS,
-   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-   See the License for the specific language governing permissions and
-   limitations under the License.
-*/
-
-package typeurl
-
-import (
-	"encoding/json"
-	"path"
-	"reflect"
-	"sync"
-
-	"github.com/gogo/protobuf/proto"
-	"github.com/gogo/protobuf/types"
-	"github.com/pkg/errors"
-)
-
-var (
-	mu       sync.RWMutex
-	registry = make(map[reflect.Type]string)
-)
-
-// Definitions of common error types used throughout typeurl.
-//
-// These error types are used with errors.Wrap and errors.Wrapf to add context
-// to an error.
-//
-// To detect an error class, use errors.Is() functions to tell whether an
-// error is of this type.
-var (
-	ErrNotFound = errors.New("not found")
-)
-
-// Register a type with a base URL for JSON marshaling. When the MarshalAny and
-// UnmarshalAny functions are called they will treat the Any type value as JSON.
-// To use protocol buffers for handling the Any value the proto.Register
-// function should be used instead of this function.
-func Register(v interface{}, args ...string) {
-	var (
-		t = tryDereference(v)
-		p = path.Join(args...)
-	)
-	mu.Lock()
-	defer mu.Unlock()
-	if et, ok := registry[t]; ok {
-		if et != p {
-			panic(errors.Errorf("type registered with alternate path %q != %q", et, p))
-		}
-		return
-	}
-	registry[t] = p
-}
-
-// TypeURL returns the type url for a registered type.
-func TypeURL(v interface{}) (string, error) {
-	mu.RLock()
-	u, ok := registry[tryDereference(v)]
-	mu.RUnlock()
-	if !ok {
-		// fallback to the proto registry if it is a proto message
-		pb, ok := v.(proto.Message)
-		if !ok {
-			return "", errors.Wrapf(ErrNotFound, "type %s", reflect.TypeOf(v))
-		}
-		return proto.MessageName(pb), nil
-	}
-	return u, nil
-}
-
-// Is returns true if the type of the Any is the same as v.
-func Is(any *types.Any, v interface{}) bool {
-	// call to check that v is a pointer
-	tryDereference(v)
-	url, err := TypeURL(v)
-	if err != nil {
-		return false
-	}
-	return any.TypeUrl == url
-}
-
-// MarshalAny marshals the value v into an any with the correct TypeUrl.
-// If the provided object is already a proto.Any message, then it will be
-// returned verbatim. If it is of type proto.Message, it will be marshaled as a
-// protocol buffer. Otherwise, the object will be marshaled to json.
-func MarshalAny(v interface{}) (*types.Any, error) {
-	var marshal func(v interface{}) ([]byte, error)
-	switch t := v.(type) {
-	case *types.Any:
-		// avoid reserializing the type if we have an any.
-		return t, nil
-	case proto.Message:
-		marshal = func(v interface{}) ([]byte, error) {
-			return proto.Marshal(t)
-		}
-	default:
-		marshal = json.Marshal
-	}
-
-	url, err := TypeURL(v)
-	if err != nil {
-		return nil, err
-	}
-
-	data, err := marshal(v)
-	if err != nil {
-		return nil, err
-	}
-	return &types.Any{
-		TypeUrl: url,
-		Value:   data,
-	}, nil
-}
-
-// UnmarshalAny unmarshals the any type into a concrete type.
-func UnmarshalAny(any *types.Any) (interface{}, error) {
-	return UnmarshalByTypeURL(any.TypeUrl, any.Value)
-}
-
-// UnmarshalByTypeURL unmarshals the given type and value to into a concrete type.
-func UnmarshalByTypeURL(typeURL string, value []byte) (interface{}, error) {
-	return unmarshal(typeURL, value, nil)
-}
-
-// UnmarshalTo unmarshals the any type into a concrete type passed in the out
-// argument. It is identical to UnmarshalAny, but lets clients provide a
-// destination type through the out argument.
-func UnmarshalTo(any *types.Any, out interface{}) error {
-	return UnmarshalToByTypeURL(any.TypeUrl, any.Value, out)
-}
-
-// UnmarshalTo unmarshals the given type and value into a concrete type passed
-// in the out argument. It is identical to UnmarshalByTypeURL, but lets clients
-// provide a destination type through the out argument.
-func UnmarshalToByTypeURL(typeURL string, value []byte, out interface{}) error {
-	_, err := unmarshal(typeURL, value, out)
-	return err
-}
-
-func unmarshal(typeURL string, value []byte, v interface{}) (interface{}, error) {
-	t, err := getTypeByUrl(typeURL)
-	if err != nil {
-		return nil, err
-	}
-
-	if v == nil {
-		v = reflect.New(t.t).Interface()
-	} else {
-		// Validate interface type provided by client
-		vURL, err := TypeURL(v)
-		if err != nil {
-			return nil, err
-		}
-		if typeURL != vURL {
-			return nil, errors.Errorf("can't unmarshal type %q to output %q", typeURL, vURL)
-		}
-	}
-
-	if t.isProto {
-		err = proto.Unmarshal(value, v.(proto.Message))
-	} else {
-		err = json.Unmarshal(value, v)
-	}
-
-	return v, err
-}
-
-type urlType struct {
-	t       reflect.Type
-	isProto bool
-}
-
-func getTypeByUrl(url string) (urlType, error) {
-	mu.RLock()
-	for t, u := range registry {
-		if u == url {
-			mu.RUnlock()
-			return urlType{
-				t: t,
-			}, nil
-		}
-	}
-	mu.RUnlock()
-	// fallback to proto registry
-	t := proto.MessageType(url)
-	if t != nil {
-		return urlType{
-			// get the underlying Elem because proto returns a pointer to the type
-			t:       t.Elem(),
-			isProto: true,
-		}, nil
-	}
-	return urlType{}, errors.Wrapf(ErrNotFound, "type with url %s", url)
-}
-
-func tryDereference(v interface{}) reflect.Type {
-	t := reflect.TypeOf(v)
-	if t.Kind() == reflect.Ptr {
-		// require check of pointer but dereference to register
-		return t.Elem()
-	}
-	panic("v is not a pointer to a type")
-}

vendor/github.com/docker/go-events/.gitignore

@@ -1,24 +0,0 @@
-# Compiled Object files, Static and Dynamic libs (Shared Objects)
-*.o
-*.a
-*.so
-
-# Folders
-_obj
-_test
-
-# Architecture specific extensions/prefixes
-*.[568vq]
-[568vq].out
-
-*.cgo1.go
-*.cgo2.c
-_cgo_defun.c
-_cgo_gotypes.go
-_cgo_export.*
-
-_testmain.go
-
-*.exe
-*.test
-*.prof

vendor/github.com/docker/go-events/CONTRIBUTING.md

@@ -1,70 +0,0 @@
-# Contributing to Docker open source projects
-
-Want to hack on go-events? Awesome! Here are instructions to get you started.
-
-go-events is part of the [Docker](https://www.docker.com) project, and
-follows the same rules and principles. If you're already familiar with the way
-Docker does things, you'll feel right at home.
-
-Otherwise, go read Docker's
-[contributions guidelines](https://github.com/docker/docker/blob/master/CONTRIBUTING.md),
-[issue triaging](https://github.com/docker/docker/blob/master/project/ISSUE-TRIAGE.md),
-[review process](https://github.com/docker/docker/blob/master/project/REVIEWING.md) and
-[branches and tags](https://github.com/docker/docker/blob/master/project/BRANCHES-AND-TAGS.md).
-
-For an in-depth description of our contribution process, visit the
-contributors guide: [Understand how to contribute](https://docs.docker.com/opensource/workflow/make-a-contribution/)
-
-### Sign your work
-
-The sign-off is a simple line at the end of the explanation for the patch. Your
-signature certifies that you wrote the patch or otherwise have the right to pass
-it on as an open-source patch. The rules are pretty simple: if you can certify
-the below (from [developercertificate.org](http://developercertificate.org/)):
-
-```
-Developer Certificate of Origin
-Version 1.1
-
-Copyright (C) 2004, 2006 The Linux Foundation and its contributors.
-660 York Street, Suite 102,
-San Francisco, CA 94110 USA
-
-Everyone is permitted to copy and distribute verbatim copies of this
-license document, but changing it is not allowed.
-
-Developer's Certificate of Origin 1.1
-
-By making a contribution to this project, I certify that:
-
-(a) The contribution was created in whole or in part by me and I
-    have the right to submit it under the open source license
-    indicated in the file; or
-
-(b) The contribution is based upon previous work that, to the best
-    of my knowledge, is covered under an appropriate open source
-    license and I have the right under that license to submit that
-    work with modifications, whether created in whole or in part
-    by me, under the same open source license (unless I am
-    permitted to submit under a different license), as indicated
-    in the file; or
-
-(c) The contribution was provided directly to me by some other
-    person who certified (a), (b) or (c) and I have not modified
-    it.
-
-(d) I understand and agree that this project and the contribution
-    are public and that a record of the contribution (including all
-    personal information I submit with it, including my sign-off) is
-    maintained indefinitely and may be redistributed consistent with
-    this project or the open source license(s) involved.
-```
-
-Then you just add a line to every git commit message:
-
-    Signed-off-by: Joe Smith <joe.smith@email.com>
-
-Use your real name (sorry, no pseudonyms or anonymous contributions.)
-
-If you set your `user.name` and `user.email` git configs, you can sign your
-commit automatically with `git commit -s`.

vendor/github.com/docker/go-events/LICENSE

@@ -1,201 +0,0 @@
-                                 Apache License
-                           Version 2.0, January 2004
-                        http://www.apache.org/licenses/
-
-   TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
-
-   1. Definitions.
-
-      "License" shall mean the terms and conditions for use, reproduction,
-      and distribution as defined by Sections 1 through 9 of this document.
-
-      "Licensor" shall mean the copyright owner or entity authorized by
-      the copyright owner that is granting the License.
-
-      "Legal Entity" shall mean the union of the acting entity and all
-      other entities that control, are controlled by, or are under common
-      control with that entity. For the purposes of this definition,
-      "control" means (i) the power, direct or indirect, to cause the
-      direction or management of such entity, whether by contract or
-      otherwise, or (ii) ownership of fifty percent (50%) or more of the
-      outstanding shares, or (iii) beneficial ownership of such entity.
-
-      "You" (or "Your") shall mean an individual or Legal Entity
-      exercising permissions granted by this License.
-
-      "Source" form shall mean the preferred form for making modifications,
-      including but not limited to software source code, documentation
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-      copyright notice that is included in or attached to the work
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-      form, that is based on (or derived from) the Work and for which the
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-      the conditions stated in this License.
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-   5. Submission of Contributions. Unless You explicitly state otherwise,
-      any Contribution intentionally submitted for inclusion in the Work
-      by You to the Licensor shall be under the terms and conditions of
-      this License, without any additional terms or conditions.
-      Notwithstanding the above, nothing herein shall supersede or modify
-      the terms of any separate license agreement you may have executed
-      with Licensor regarding such Contributions.
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-   6. Trademarks. This License does not grant permission to use the trade
-      names, trademarks, service marks, or product names of the Licensor,
-      except as required for reasonable and customary use in describing the
-      origin of the Work and reproducing the content of the NOTICE file.
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-   7. Disclaimer of Warranty. Unless required by applicable law or
-      agreed to in writing, Licensor provides the Work (and each
-      Contributor provides its Contributions) on an "AS IS" BASIS,
-      WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
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-      appropriateness of using or redistributing the Work and assume any
-      risks associated with Your exercise of permissions under this License.
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-   8. Limitation of Liability. In no event and under no legal theory,
-      whether in tort (including negligence), contract, or otherwise,
-      unless required by applicable law (such as deliberate and grossly
-      negligent acts) or agreed to in writing, shall any Contributor be
-      liable to You for damages, including any direct, indirect, special,
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-      Work (including but not limited to damages for loss of goodwill,
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-      License. However, in accepting such obligations, You may act only
-      on Your own behalf and on Your sole responsibility, not on behalf
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-      defend, and hold each Contributor harmless for any liability
-      incurred by, or claims asserted against, such Contributor by reason
-      of your accepting any such warranty or additional liability.
-
-   END OF TERMS AND CONDITIONS
-
-   APPENDIX: How to apply the Apache License to your work.
-
-      To apply the Apache License to your work, attach the following
-      boilerplate notice, with the fields enclosed by brackets "{}"
-      replaced with your own identifying information. (Don't include
-      the brackets!)  The text should be enclosed in the appropriate
-      comment syntax for the file format. We also recommend that a
-      file or class name and description of purpose be included on the
-      same "printed page" as the copyright notice for easier
-      identification within third-party archives.
-
-   Copyright 2016 Docker, Inc.
-
-   Licensed under the Apache License, Version 2.0 (the "License");
-   you may not use this file except in compliance with the License.
-   You may obtain a copy of the License at
-
-       http://www.apache.org/licenses/LICENSE-2.0
-
-   Unless required by applicable law or agreed to in writing, software
-   distributed under the License is distributed on an "AS IS" BASIS,
-   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-   See the License for the specific language governing permissions and
-   limitations under the License.

vendor/github.com/docker/go-events/MAINTAINERS

@@ -1,46 +0,0 @@
-# go-events maintainers file
-#
-# This file describes who runs the docker/go-events project and how.
-# This is a living document - if you see something out of date or missing, speak up!
-#
-# It is structured to be consumable by both humans and programs.
-# To extract its contents programmatically, use any TOML-compliant parser.
-#
-# This file is compiled into the MAINTAINERS file in docker/opensource.
-#
-[Org]
-	[Org."Core maintainers"]
-		people = [
-			"aaronlehmann",
-			"aluzzardi",
-			"lk4d4",
-			"stevvooe",
-		]
-
-[people]
-
-# A reference list of all people associated with the project.
-# All other sections should refer to people by their canonical key
-# in the people section.
-
-	# ADD YOURSELF HERE IN ALPHABETICAL ORDER
-
-	[people.aaronlehmann]
-	Name = "Aaron Lehmann"
-	Email = "aaron.lehmann@docker.com"
-	GitHub = "aaronlehmann"
-
-	[people.aluzzardi]
-	Name = "Andrea Luzzardi"
-	Email = "al@docker.com"
-	GitHub = "aluzzardi"
-
-	[people.lk4d4]
-	Name = "Alexander Morozov"
-	Email = "lk4d4@docker.com"
-	GitHub = "lk4d4"
-
-	[people.stevvooe]
-	Name = "Stephen Day"
-	Email = "stephen.day@docker.com"
-	GitHub = "stevvooe"

vendor/github.com/docker/go-events/README.md

@@ -1,117 +0,0 @@
-# Docker Events Package
-
-[![GoDoc](https://godoc.org/github.com/docker/go-events?status.svg)](https://godoc.org/github.com/docker/go-events)
-[![Circle CI](https://circleci.com/gh/docker/go-events.svg?style=shield)](https://circleci.com/gh/docker/go-events)
-
-The Docker `events` package implements a composable event distribution package
-for Go.
-
-Originally created to implement the [notifications in Docker Registry
-2](https://github.com/docker/distribution/blob/master/docs/notifications.md),
-we've found the pattern to be useful in other applications. This package is
-most of the same code with slightly updated interfaces. Much of the internals
-have been made available.
-
-## Usage
-
-The `events` package centers around a `Sink` type.  Events are written with
-calls to `Sink.Write(event Event)`. Sinks can be wired up in various
-configurations to achieve interesting behavior.
-
-The canonical example is that employed by the
-[docker/distribution/notifications](https://godoc.org/github.com/docker/distribution/notifications)
-package. Let's say we have a type `httpSink` where we'd like to queue
-notifications. As a rule, it should send a single http request and return an
-error if it fails:
-
-```go
-func (h *httpSink) Write(event Event) error {
-	p, err := json.Marshal(event)
-	if err != nil {
-		return err
-	}
-	body := bytes.NewReader(p)
-	resp, err := h.client.Post(h.url, "application/json", body)
-	if err != nil {
-		return err
-	}
-	defer resp.Body.Close()
-	
-	if resp.Status != 200 {
-		return errors.New("unexpected status")
-	}
-
-	return nil
-}
-
-// implement (*httpSink).Close()
-```
-
-With just that, we can start using components from this package. One can call
-`(*httpSink).Write` to send events as the body of a post request to a
-configured URL.
-
-### Retries
-
-HTTP can be unreliable. The first feature we'd like is to have some retry:
-
-```go
-hs := newHTTPSink(/*...*/)
-retry := NewRetryingSink(hs, NewBreaker(5, time.Second))
-```
-
-We now have a sink that will retry events against the `httpSink` until they
-succeed. The retry will backoff for one second after 5 consecutive failures
-using the breaker strategy.
-
-### Queues
-
-This isn't quite enough. We we want a sink that doesn't block while we are
-waiting for events to be sent. Let's add a `Queue`:
-
-```go
-queue := NewQueue(retry)
-```
-
-Now, we have an unbounded queue that will work through all events sent with
-`(*Queue).Write`. Events can be added asynchronously to the queue without
-blocking the current execution path. This is ideal for use in an http request.
-
-### Broadcast
-
-It usually turns out that you want to send to more than one listener. We can
-use `Broadcaster` to support this:
-
-```go
-var broadcast = NewBroadcaster() // make it available somewhere in your application.
-broadcast.Add(queue) // add your queue!
-broadcast.Add(queue2) // and another!
-```
-
-With the above, we can now call `broadcast.Write` in our http handlers and have
-all the events distributed to each queue. Because the events are queued, not
-listener blocks another.
-
-### Extending
-
-For the most part, the above is sufficient for a lot of applications. However,
-extending the above functionality can be done implementing your own `Sink`. The
-behavior and semantics of the sink can be completely dependent on the
-application requirements. The interface is provided below for reference:
-
-```go
-type Sink {
-	Write(Event) error
-	Close() error
-}
-```
-
-Application behavior can be controlled by how `Write` behaves. The examples
-above are designed to queue the message and return as quickly as possible.
-Other implementations may block until the event is committed to durable
-storage.
-
-## Copyright and license
-
-Copyright © 2016 Docker, Inc. go-events is licensed under the Apache License,
-Version 2.0. See [LICENSE](LICENSE) for the full license text.

vendor/github.com/docker/go-events/broadcast.go

@@ -1,178 +0,0 @@
-package events
-
-import (
-	"fmt"
-	"sync"
-
-	"github.com/sirupsen/logrus"
-)
-
-// Broadcaster sends events to multiple, reliable Sinks. The goal of this
-// component is to dispatch events to configured endpoints. Reliability can be
-// provided by wrapping incoming sinks.
-type Broadcaster struct {
-	sinks   []Sink
-	events  chan Event
-	adds    chan configureRequest
-	removes chan configureRequest
-
-	shutdown chan struct{}
-	closed   chan struct{}
-	once     sync.Once
-}
-
-// NewBroadcaster appends one or more sinks to the list of sinks. The
-// broadcaster behavior will be affected by the properties of the sink.
-// Generally, the sink should accept all messages and deal with reliability on
-// its own. Use of EventQueue and RetryingSink should be used here.
-func NewBroadcaster(sinks ...Sink) *Broadcaster {
-	b := Broadcaster{
-		sinks:    sinks,
-		events:   make(chan Event),
-		adds:     make(chan configureRequest),
-		removes:  make(chan configureRequest),
-		shutdown: make(chan struct{}),
-		closed:   make(chan struct{}),
-	}
-
-	// Start the broadcaster
-	go b.run()
-
-	return &b
-}
-
-// Write accepts an event to be dispatched to all sinks. This method will never
-// fail and should never block (hopefully!). The caller cedes the memory to the
-// broadcaster and should not modify it after calling write.
-func (b *Broadcaster) Write(event Event) error {
-	select {
-	case b.events <- event:
-	case <-b.closed:
-		return ErrSinkClosed
-	}
-	return nil
-}
-
-// Add the sink to the broadcaster.
-//
-// The provided sink must be comparable with equality. Typically, this just
-// works with a regular pointer type.
-func (b *Broadcaster) Add(sink Sink) error {
-	return b.configure(b.adds, sink)
-}
-
-// Remove the provided sink.
-func (b *Broadcaster) Remove(sink Sink) error {
-	return b.configure(b.removes, sink)
-}
-
-type configureRequest struct {
-	sink     Sink
-	response chan error
-}
-
-func (b *Broadcaster) configure(ch chan configureRequest, sink Sink) error {
-	response := make(chan error, 1)
-
-	for {
-		select {
-		case ch <- configureRequest{
-			sink:     sink,
-			response: response}:
-			ch = nil
-		case err := <-response:
-			return err
-		case <-b.closed:
-			return ErrSinkClosed
-		}
-	}
-}
-
-// Close the broadcaster, ensuring that all messages are flushed to the
-// underlying sink before returning.
-func (b *Broadcaster) Close() error {
-	b.once.Do(func() {
-		close(b.shutdown)
-	})
-
-	<-b.closed
-	return nil
-}
-
-// run is the main broadcast loop, started when the broadcaster is created.
-// Under normal conditions, it waits for events on the event channel. After
-// Close is called, this goroutine will exit.
-func (b *Broadcaster) run() {
-	defer close(b.closed)
-	remove := func(target Sink) {
-		for i, sink := range b.sinks {
-			if sink == target {
-				b.sinks = append(b.sinks[:i], b.sinks[i+1:]...)
-				break
-			}
-		}
-	}
-
-	for {
-		select {
-		case event := <-b.events:
-			for _, sink := range b.sinks {
-				if err := sink.Write(event); err != nil {
-					if err == ErrSinkClosed {
-						// remove closed sinks
-						remove(sink)
-						continue
-					}
-					logrus.WithField("event", event).WithField("events.sink", sink).WithError(err).
-						Errorf("broadcaster: dropping event")
-				}
-			}
-		case request := <-b.adds:
-			// while we have to iterate for add/remove, common iteration for
-			// send is faster against slice.
-
-			var found bool
-			for _, sink := range b.sinks {
-				if request.sink == sink {
-					found = true
-					break
-				}
-			}
-
-			if !found {
-				b.sinks = append(b.sinks, request.sink)
-			}
-			// b.sinks[request.sink] = struct{}{}
-			request.response <- nil
-		case request := <-b.removes:
-			remove(request.sink)
-			request.response <- nil
-		case <-b.shutdown:
-			// close all the underlying sinks
-			for _, sink := range b.sinks {
-				if err := sink.Close(); err != nil && err != ErrSinkClosed {
-					logrus.WithField("events.sink", sink).WithError(err).
-						Errorf("broadcaster: closing sink failed")
-				}
-			}
-			return
-		}
-	}
-}
-
-func (b *Broadcaster) String() string {
-	// Serialize copy of this broadcaster without the sync.Once, to avoid
-	// a data race.
-
-	b2 := map[string]interface{}{
-		"sinks":   b.sinks,
-		"events":  b.events,
-		"adds":    b.adds,
-		"removes": b.removes,
-
-		"shutdown": b.shutdown,
-		"closed":   b.closed,
-	}
-
-	return fmt.Sprint(b2)
-}

vendor/github.com/docker/go-events/channel.go

@@ -1,61 +0,0 @@
-package events
-
-import (
-	"fmt"
-	"sync"
-)
-
-// Channel provides a sink that can be listened on. The writer and channel
-// listener must operate in separate goroutines.
-//
-// Consumers should listen on Channel.C until Closed is closed.
-type Channel struct {
-	C chan Event
-
-	closed chan struct{}
-	once   sync.Once
-}
-
-// NewChannel returns a channel. If buffer is zero, the channel is
-// unbuffered.
-func NewChannel(buffer int) *Channel {
-	return &Channel{
-		C:      make(chan Event, buffer),
-		closed: make(chan struct{}),
-	}
-}
-
-// Done returns a channel that will always proceed once the sink is closed.
-func (ch *Channel) Done() chan struct{} {
-	return ch.closed
-}
-
-// Write the event to the channel. Must be called in a separate goroutine from
-// the listener.
-func (ch *Channel) Write(event Event) error {
-	select {
-	case ch.C <- event:
-		return nil
-	case <-ch.closed:
-		return ErrSinkClosed
-	}
-}
-
-// Close the channel sink.
-func (ch *Channel) Close() error {
-	ch.once.Do(func() {
-		close(ch.closed)
-	})
-
-	return nil
-}
-
-func (ch *Channel) String() string {
-	// Serialize a copy of the Channel that doesn't contain the sync.Once,
-	// to avoid a data race.
-	ch2 := map[string]interface{}{
-		"C":      ch.C,
-		"closed": ch.closed,
-	}
-	return fmt.Sprint(ch2)
-}

vendor/github.com/docker/go-events/errors.go

@@ -1,10 +0,0 @@
-package events
-
-import "fmt"
-
-var (
-	// ErrSinkClosed is returned if a write is issued to a sink that has been
-	// closed. If encountered, the error should be considered terminal and
-	// retries will not be successful.
-	ErrSinkClosed = fmt.Errorf("events: sink closed")
-)

vendor/github.com/docker/go-events/event.go

@@ -1,15 +0,0 @@
-package events
-
-// Event marks items that can be sent as events.
-type Event interface{}
-
-// Sink accepts and sends events.
-type Sink interface {
-	// Write an event to the Sink. If no error is returned, the caller will
-	// assume that all events have been committed to the sink. If an error is
-	// received, the caller may retry sending the event.
-	Write(event Event) error
-
-	// Close the sink, possibly waiting for pending events to flush.
-	Close() error
-}

vendor/github.com/docker/go-events/filter.go

@@ -1,52 +0,0 @@
-package events
-
-// Matcher matches events.
-type Matcher interface {
-	Match(event Event) bool
-}
-
-// MatcherFunc implements matcher with just a function.
-type MatcherFunc func(event Event) bool
-
-// Match calls the wrapped function.
-func (fn MatcherFunc) Match(event Event) bool {
-	return fn(event)
-}
-
-// Filter provides an event sink that sends only events that are accepted by a
-// Matcher. No methods on filter are goroutine safe.
-type Filter struct {
-	dst     Sink
-	matcher Matcher
-	closed  bool
-}
-
-// NewFilter returns a new filter that will send to events to dst that return
-// true for Matcher.
-func NewFilter(dst Sink, matcher Matcher) Sink {
-	return &Filter{dst: dst, matcher: matcher}
-}
-
-// Write an event to the filter.
-func (f *Filter) Write(event Event) error {
-	if f.closed {
-		return ErrSinkClosed
-	}
-
-	if f.matcher.Match(event) {
-		return f.dst.Write(event)
-	}
-
-	return nil
-}
-
-// Close the filter and allow no more events to pass through.
-func (f *Filter) Close() error {
-	// TODO(stevvooe): Not all sinks should have Close.
-	if f.closed {
-		return nil
-	}
-
-	f.closed = true
-	return f.dst.Close()
-}

vendor/github.com/docker/go-events/queue.go

@@ -1,111 +0,0 @@
-package events
-
-import (
-	"container/list"
-	"sync"
-
-	"github.com/sirupsen/logrus"
-)
-
-// Queue accepts all messages into a queue for asynchronous consumption
-// by a sink. It is unbounded and thread safe but the sink must be reliable or
-// events will be dropped.
-type Queue struct {
-	dst    Sink
-	events *list.List
-	cond   *sync.Cond
-	mu     sync.Mutex
-	closed bool
-}
-
-// NewQueue returns a queue to the provided Sink dst.
-func NewQueue(dst Sink) *Queue {
-	eq := Queue{
-		dst:    dst,
-		events: list.New(),
-	}
-
-	eq.cond = sync.NewCond(&eq.mu)
-	go eq.run()
-	return &eq
-}
-
-// Write accepts the events into the queue, only failing if the queue has
-// been closed.
-func (eq *Queue) Write(event Event) error {
-	eq.mu.Lock()
-	defer eq.mu.Unlock()
-
-	if eq.closed {
-		return ErrSinkClosed
-	}
-
-	eq.events.PushBack(event)
-	eq.cond.Signal() // signal waiters
-
-	return nil
-}
-
-// Close shutsdown the event queue, flushing
-func (eq *Queue) Close() error {
-	eq.mu.Lock()
-	defer eq.mu.Unlock()
-
-	if eq.closed {
-		return nil
-	}
-
-	// set closed flag
-	eq.closed = true
-	eq.cond.Signal() // signal flushes queue
-	eq.cond.Wait()   // wait for signal from last flush
-	return eq.dst.Close()
-}
-
-// run is the main goroutine to flush events to the target sink.
-func (eq *Queue) run() {
-	for {
-		event := eq.next()
-
-		if event == nil {
-			return // nil block means event queue is closed.
-		}
-
-		if err := eq.dst.Write(event); err != nil {
-			// TODO(aaronl): Dropping events could be bad depending
-			// on the application. We should have a way of
-			// communicating this condition. However, logging
-			// at a log level above debug may not be appropriate.
-			// Eventually, go-events should not use logrus at all,
-			// and should bubble up conditions like this through
-			// error values.
-			logrus.WithFields(logrus.Fields{
-				"event": event,
-				"sink":  eq.dst,
-			}).WithError(err).Debug("eventqueue: dropped event")
-		}
-	}
-}
-
-// next encompasses the critical section of the run loop. When the queue is
-// empty, it will block on the condition. If new data arrives, it will wake
-// and return a block. When closed, a nil slice will be returned.
-func (eq *Queue) next() Event {
-	eq.mu.Lock()
-	defer eq.mu.Unlock()
-
-	for eq.events.Len() < 1 {
-		if eq.closed {
-			eq.cond.Broadcast()
-			return nil
-		}
-
-		eq.cond.Wait()
-	}
-
-	front := eq.events.Front()
-	block := front.Value.(Event)
-	eq.events.Remove(front)
-
-	return block
-}

vendor/github.com/docker/go-events/retry.go

@@ -1,260 +0,0 @@
-package events
-
-import (
-	"fmt"
-	"math/rand"
-	"sync"
-	"sync/atomic"
-	"time"
-
-	"github.com/sirupsen/logrus"
-)
-
-// RetryingSink retries the write until success or an ErrSinkClosed is
-// returned. Underlying sink must have p > 0 of succeeding or the sink will
-// block. Retry is configured with a RetryStrategy.  Concurrent calls to a
-// retrying sink are serialized through the sink, meaning that if one is
-// in-flight, another will not proceed.
-type RetryingSink struct {
-	sink     Sink
-	strategy RetryStrategy
-	closed   chan struct{}
-	once     sync.Once
-}
-
-// NewRetryingSink returns a sink that will retry writes to a sink, backing
-// off on failure. Parameters threshold and backoff adjust the behavior of the
-// circuit breaker.
-func NewRetryingSink(sink Sink, strategy RetryStrategy) *RetryingSink {
-	rs := &RetryingSink{
-		sink:     sink,
-		strategy: strategy,
-		closed:   make(chan struct{}),
-	}
-
-	return rs
-}
-
-// Write attempts to flush the events to the downstream sink until it succeeds
-// or the sink is closed.
-func (rs *RetryingSink) Write(event Event) error {
-	logger := logrus.WithField("event", event)
-
-retry:
-	select {
-	case <-rs.closed:
-		return ErrSinkClosed
-	default:
-	}
-
-	if backoff := rs.strategy.Proceed(event); backoff > 0 {
-		select {
-		case <-time.After(backoff):
-			// TODO(stevvooe): This branch holds up the next try. Before, we
-			// would simply break to the "retry" label and then possibly wait
-			// again. However, this requires all retry strategies to have a
-			// large probability of probing the sync for success, rather than
-			// just backing off and sending the request.
-		case <-rs.closed:
-			return ErrSinkClosed
-		}
-	}
-
-	if err := rs.sink.Write(event); err != nil {
-		if err == ErrSinkClosed {
-			// terminal!
-			return err
-		}
-
-		logger := logger.WithError(err) // shadow!!
-
-		if rs.strategy.Failure(event, err) {
-			logger.Errorf("retryingsink: dropped event")
-			return nil
-		}
-
-		logger.Errorf("retryingsink: error writing event, retrying")
-		goto retry
-	}
-
-	rs.strategy.Success(event)
-	return nil
-}
-
-// Close closes the sink and the underlying sink.
-func (rs *RetryingSink) Close() error {
-	rs.once.Do(func() {
-		close(rs.closed)
-	})
-
-	return nil
-}
-
-func (rs *RetryingSink) String() string {
-	// Serialize a copy of the RetryingSink without the sync.Once, to avoid
-	// a data race.
-	rs2 := map[string]interface{}{
-		"sink":     rs.sink,
-		"strategy": rs.strategy,
-		"closed":   rs.closed,
-	}
-	return fmt.Sprint(rs2)
-}
-
-// RetryStrategy defines a strategy for retrying event sink writes.
-//
-// All methods should be goroutine safe.
-type RetryStrategy interface {
-	// Proceed is called before every event send. If proceed returns a
-	// positive, non-zero integer, the retryer will back off by the provided
-	// duration.
-	//
-	// An event is provided, by may be ignored.
-	Proceed(event Event) time.Duration
-
-	// Failure reports a failure to the strategy. If this method returns true,
-	// the event should be dropped.
-	Failure(event Event, err error) bool
-
-	// Success should be called when an event is sent successfully.
-	Success(event Event)
-}
-
-// Breaker implements a circuit breaker retry strategy.
-//
-// The current implementation never drops events.
-type Breaker struct {
-	threshold int
-	recent    int
-	last      time.Time
-	backoff   time.Duration // time after which we retry after failure.
-	mu        sync.Mutex
-}
-
-var _ RetryStrategy = &Breaker{}
-
-// NewBreaker returns a breaker that will backoff after the threshold has been
-// tripped. A Breaker is thread safe and may be shared by many goroutines.
-func NewBreaker(threshold int, backoff time.Duration) *Breaker {
-	return &Breaker{
-		threshold: threshold,
-		backoff:   backoff,
-	}
-}
-
-// Proceed checks the failures against the threshold.
-func (b *Breaker) Proceed(event Event) time.Duration {
-	b.mu.Lock()
-	defer b.mu.Unlock()
-
-	if b.recent < b.threshold {
-		return 0
-	}
-
-	return b.last.Add(b.backoff).Sub(time.Now())
-}
-
-// Success resets the breaker.
-func (b *Breaker) Success(event Event) {
-	b.mu.Lock()
-	defer b.mu.Unlock()
-
-	b.recent = 0
-	b.last = time.Time{}
-}
-
-// Failure records the failure and latest failure time.
-func (b *Breaker) Failure(event Event, err error) bool {
-	b.mu.Lock()
-	defer b.mu.Unlock()
-
-	b.recent++
-	b.last = time.Now().UTC()
-	return false // never drop events.
-}
-
-var (
-	// DefaultExponentialBackoffConfig provides a default configuration for
-	// exponential backoff.
-	DefaultExponentialBackoffConfig = ExponentialBackoffConfig{
-		Base:   time.Second,
-		Factor: time.Second,
-		Max:    20 * time.Second,
-	}
-)
-
-// ExponentialBackoffConfig configures backoff parameters.
-//
-// Note that these parameters operate on the upper bound for choosing a random
-// value. For example, at Base=1s, a random value in [0,1s) will be chosen for
-// the backoff value.
-type ExponentialBackoffConfig struct {
-	// Base is the minimum bound for backing off after failure.
-	Base time.Duration
-
-	// Factor sets the amount of time by which the backoff grows with each
-	// failure.
-	Factor time.Duration
-
-	// Max is the absolute maxiumum bound for a single backoff.
-	Max time.Duration
-}
-
-// ExponentialBackoff implements random backoff with exponentially increasing
-// bounds as the number consecutive failures increase.
-type ExponentialBackoff struct {
-	failures uint64 // consecutive failure counter (needs to be 64-bit aligned)
-	config   ExponentialBackoffConfig
-}
-
-// NewExponentialBackoff returns an exponential backoff strategy with the
-// desired config. If config is nil, the default is returned.
-func NewExponentialBackoff(config ExponentialBackoffConfig) *ExponentialBackoff {
-	return &ExponentialBackoff{
-		config: config,
-	}
-}
-
-// Proceed returns the next randomly bound exponential backoff time.
-func (b *ExponentialBackoff) Proceed(event Event) time.Duration {
-	return b.backoff(atomic.LoadUint64(&b.failures))
-}
-
-// Success resets the failures counter.
-func (b *ExponentialBackoff) Success(event Event) {
-	atomic.StoreUint64(&b.failures, 0)
-}
-
-// Failure increments the failure counter.
-func (b *ExponentialBackoff) Failure(event Event, err error) bool {
-	atomic.AddUint64(&b.failures, 1)
-	return false
-}
-
-// backoff calculates the amount of time to wait based on the number of
-// consecutive failures.
-func (b *ExponentialBackoff) backoff(failures uint64) time.Duration {
-	if failures <= 0 {
-		// proceed normally when there are no failures.
-		return 0
-	}
-
-	factor := b.config.Factor
-	if factor <= 0 {
-		factor = DefaultExponentialBackoffConfig.Factor
-	}
-
-	backoff := b.config.Base + factor*time.Duration(1<<(failures-1))
-
-	max := b.config.Max
-	if max <= 0 {
-		max = DefaultExponentialBackoffConfig.Max
-	}
-
-	if backoff > max || backoff < 0 {
-		backoff = max
-	}
-
-	// Choose a uniformly distributed value from [0, backoff).
-	return time.Duration(rand.Int63n(int64(backoff)))
-}

vendor/github.com/gogo/protobuf/AUTHORS

@@ -1,15 +0,0 @@
-# This is the official list of GoGo authors for copyright purposes.
-# This file is distinct from the CONTRIBUTORS file, which
-# lists people.  For example, employees are listed in CONTRIBUTORS,
-# but not in AUTHORS, because the employer holds the copyright.
-
-# Names should be added to this file as one of
-#     Organization's name
-#     Individual's name <submission email address>
-#     Individual's name <submission email address> <email2> <emailN>
-
-# Please keep the list sorted.
-
-Sendgrid, Inc
-Vastech SA (PTY) LTD
-Walter Schulze <awalterschulze@gmail.com>

vendor/github.com/gogo/protobuf/CONTRIBUTORS

@@ -1,23 +0,0 @@
-Anton Povarov <anton.povarov@gmail.com>
-Brian Goff <cpuguy83@gmail.com>
-Clayton Coleman <ccoleman@redhat.com>
-Denis Smirnov <denis.smirnov.91@gmail.com>
-DongYun Kang <ceram1000@gmail.com>
-Dwayne Schultz <dschultz@pivotal.io>
-Georg Apitz <gapitz@pivotal.io>
-Gustav Paul <gustav.paul@gmail.com>
-Johan Brandhorst <johan.brandhorst@gmail.com>
-John Shahid <jvshahid@gmail.com>
-John Tuley <john@tuley.org>
-Laurent <laurent@adyoulike.com>
-Patrick Lee <patrick@dropbox.com>
-Peter Edge <peter.edge@gmail.com>
-Roger Johansson <rogeralsing@gmail.com>
-Sam Nguyen <sam.nguyen@sendgrid.com>
-Sergio Arbeo <serabe@gmail.com>
-Stephen J Day <stephen.day@docker.com>
-Tamir Duberstein <tamird@gmail.com>
-Todd Eisenberger <teisenberger@dropbox.com>
-Tormod Erevik Lea <tormodlea@gmail.com>
-Vyacheslav Kim <kane@sendgrid.com>
-Walter Schulze <awalterschulze@gmail.com>

vendor/github.com/gogo/protobuf/LICENSE

@@ -1,35 +0,0 @@
-Copyright (c) 2013, The GoGo Authors. All rights reserved.
-
-Protocol Buffers for Go with Gadgets
-
-Go support for Protocol Buffers - Google's data interchange format
-
-Copyright 2010 The Go Authors.  All rights reserved.
-https://github.com/golang/protobuf
-
-Redistribution and use in source and binary forms, with or without
-modification, are permitted provided that the following conditions are
-met:
-
-    * Redistributions of source code must retain the above copyright
-notice, this list of conditions and the following disclaimer.
-    * Redistributions in binary form must reproduce the above
-copyright notice, this list of conditions and the following disclaimer
-in the documentation and/or other materials provided with the
-distribution.
-    * Neither the name of Google Inc. nor the names of its
-contributors may be used to endorse or promote products derived from
-this software without specific prior written permission.
-
-THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-

vendor/github.com/gogo/protobuf/proto/Makefile

@@ -1,43 +0,0 @@
-# Go support for Protocol Buffers - Google's data interchange format
-#
-# Copyright 2010 The Go Authors.  All rights reserved.
-# https://github.com/golang/protobuf
-#
-# Redistribution and use in source and binary forms, with or without
-# modification, are permitted provided that the following conditions are
-# met:
-#
-#     * Redistributions of source code must retain the above copyright
-# notice, this list of conditions and the following disclaimer.
-#     * Redistributions in binary form must reproduce the above
-# copyright notice, this list of conditions and the following disclaimer
-# in the documentation and/or other materials provided with the
-# distribution.
-#     * Neither the name of Google Inc. nor the names of its
-# contributors may be used to endorse or promote products derived from
-# this software without specific prior written permission.
-#
-# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
-install:
-	go install
-
-test: install generate-test-pbs
-	go test
-
-
-generate-test-pbs:
-	make install
-	make -C test_proto
-	make -C proto3_proto
-	make

vendor/github.com/gogo/protobuf/proto/clone.go

@@ -1,258 +0,0 @@
-// Go support for Protocol Buffers - Google's data interchange format
-//
-// Copyright 2011 The Go Authors.  All rights reserved.
-// https://github.com/golang/protobuf
-//
-// Redistribution and use in source and binary forms, with or without
-// modification, are permitted provided that the following conditions are
-// met:
-//
-//     * Redistributions of source code must retain the above copyright
-// notice, this list of conditions and the following disclaimer.
-//     * Redistributions in binary form must reproduce the above
-// copyright notice, this list of conditions and the following disclaimer
-// in the documentation and/or other materials provided with the
-// distribution.
-//     * Neither the name of Google Inc. nor the names of its
-// contributors may be used to endorse or promote products derived from
-// this software without specific prior written permission.
-//
-// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
-// Protocol buffer deep copy and merge.
-// TODO: RawMessage.
-
-package proto
-
-import (
-	"fmt"
-	"log"
-	"reflect"
-	"strings"
-)
-
-// Clone returns a deep copy of a protocol buffer.
-func Clone(src Message) Message {
-	in := reflect.ValueOf(src)
-	if in.IsNil() {
-		return src
-	}
-	out := reflect.New(in.Type().Elem())
-	dst := out.Interface().(Message)
-	Merge(dst, src)
-	return dst
-}
-
-// Merger is the interface representing objects that can merge messages of the same type.
-type Merger interface {
-	// Merge merges src into this message.
-	// Required and optional fields that are set in src will be set to that value in dst.
-	// Elements of repeated fields will be appended.
-	//
-	// Merge may panic if called with a different argument type than the receiver.
-	Merge(src Message)
-}
-
-// generatedMerger is the custom merge method that generated protos will have.
-// We must add this method since a generate Merge method will conflict with
-// many existing protos that have a Merge data field already defined.
-type generatedMerger interface {
-	XXX_Merge(src Message)
-}
-
-// Merge merges src into dst.
-// Required and optional fields that are set in src will be set to that value in dst.
-// Elements of repeated fields will be appended.
-// Merge panics if src and dst are not the same type, or if dst is nil.
-func Merge(dst, src Message) {
-	if m, ok := dst.(Merger); ok {
-		m.Merge(src)
-		return
-	}
-
-	in := reflect.ValueOf(src)
-	out := reflect.ValueOf(dst)
-	if out.IsNil() {
-		panic("proto: nil destination")
-	}
-	if in.Type() != out.Type() {
-		panic(fmt.Sprintf("proto.Merge(%T, %T) type mismatch", dst, src))
-	}
-	if in.IsNil() {
-		return // Merge from nil src is a noop
-	}
-	if m, ok := dst.(generatedMerger); ok {
-		m.XXX_Merge(src)
-		return
-	}
-	mergeStruct(out.Elem(), in.Elem())
-}
-
-func mergeStruct(out, in reflect.Value) {
-	sprop := GetProperties(in.Type())
-	for i := 0; i < in.NumField(); i++ {
-		f := in.Type().Field(i)
-		if strings.HasPrefix(f.Name, "XXX_") {
-			continue
-		}
-		mergeAny(out.Field(i), in.Field(i), false, sprop.Prop[i])
-	}
-
-	if emIn, ok := in.Addr().Interface().(extensionsBytes); ok {
-		emOut := out.Addr().Interface().(extensionsBytes)
-		bIn := emIn.GetExtensions()
-		bOut := emOut.GetExtensions()
-		*bOut = append(*bOut, *bIn...)
-	} else if emIn, err := extendable(in.Addr().Interface()); err == nil {
-		emOut, _ := extendable(out.Addr().Interface())
-		mIn, muIn := emIn.extensionsRead()
-		if mIn != nil {
-			mOut := emOut.extensionsWrite()
-			muIn.Lock()
-			mergeExtension(mOut, mIn)
-			muIn.Unlock()
-		}
-	}
-
-	uf := in.FieldByName("XXX_unrecognized")
-	if !uf.IsValid() {
-		return
-	}
-	uin := uf.Bytes()
-	if len(uin) > 0 {
-		out.FieldByName("XXX_unrecognized").SetBytes(append([]byte(nil), uin...))
-	}
-}
-
-// mergeAny performs a merge between two values of the same type.
-// viaPtr indicates whether the values were indirected through a pointer (implying proto2).
-// prop is set if this is a struct field (it may be nil).
-func mergeAny(out, in reflect.Value, viaPtr bool, prop *Properties) {
-	if in.Type() == protoMessageType {
-		if !in.IsNil() {
-			if out.IsNil() {
-				out.Set(reflect.ValueOf(Clone(in.Interface().(Message))))
-			} else {
-				Merge(out.Interface().(Message), in.Interface().(Message))
-			}
-		}
-		return
-	}
-	switch in.Kind() {
-	case reflect.Bool, reflect.Float32, reflect.Float64, reflect.Int32, reflect.Int64,
-		reflect.String, reflect.Uint32, reflect.Uint64:
-		if !viaPtr && isProto3Zero(in) {
-			return
-		}
-		out.Set(in)
-	case reflect.Interface:
-		// Probably a oneof field; copy non-nil values.
-		if in.IsNil() {
-			return
-		}
-		// Allocate destination if it is not set, or set to a different type.
-		// Otherwise we will merge as normal.
-		if out.IsNil() || out.Elem().Type() != in.Elem().Type() {
-			out.Set(reflect.New(in.Elem().Elem().Type())) // interface -> *T -> T -> new(T)
-		}
-		mergeAny(out.Elem(), in.Elem(), false, nil)
-	case reflect.Map:
-		if in.Len() == 0 {
-			return
-		}
-		if out.IsNil() {
-			out.Set(reflect.MakeMap(in.Type()))
-		}
-		// For maps with value types of *T or []byte we need to deep copy each value.
-		elemKind := in.Type().Elem().Kind()
-		for _, key := range in.MapKeys() {
-			var val reflect.Value
-			switch elemKind {
-			case reflect.Ptr:
-				val = reflect.New(in.Type().Elem().Elem())
-				mergeAny(val, in.MapIndex(key), false, nil)
-			case reflect.Slice:
-				val = in.MapIndex(key)
-				val = reflect.ValueOf(append([]byte{}, val.Bytes()...))
-			default:
-				val = in.MapIndex(key)
-			}
-			out.SetMapIndex(key, val)
-		}
-	case reflect.Ptr:
-		if in.IsNil() {
-			return
-		}
-		if out.IsNil() {
-			out.Set(reflect.New(in.Elem().Type()))
-		}
-		mergeAny(out.Elem(), in.Elem(), true, nil)
-	case reflect.Slice:
-		if in.IsNil() {
-			return
-		}
-		if in.Type().Elem().Kind() == reflect.Uint8 {
-			// []byte is a scalar bytes field, not a repeated field.
-
-			// Edge case: if this is in a proto3 message, a zero length
-			// bytes field is considered the zero value, and should not
-			// be merged.
-			if prop != nil && prop.proto3 && in.Len() == 0 {
-				return
-			}
-
-			// Make a deep copy.
-			// Append to []byte{} instead of []byte(nil) so that we never end up
-			// with a nil result.
-			out.SetBytes(append([]byte{}, in.Bytes()...))
-			return
-		}
-		n := in.Len()
-		if out.IsNil() {
-			out.Set(reflect.MakeSlice(in.Type(), 0, n))
-		}
-		switch in.Type().Elem().Kind() {
-		case reflect.Bool, reflect.Float32, reflect.Float64, reflect.Int32, reflect.Int64,
-			reflect.String, reflect.Uint32, reflect.Uint64:
-			out.Set(reflect.AppendSlice(out, in))
-		default:
-			for i := 0; i < n; i++ {
-				x := reflect.Indirect(reflect.New(in.Type().Elem()))
-				mergeAny(x, in.Index(i), false, nil)
-				out.Set(reflect.Append(out, x))
-			}
-		}
-	case reflect.Struct:
-		mergeStruct(out, in)
-	default:
-		// unknown type, so not a protocol buffer
-		log.Printf("proto: don't know how to copy %v", in)
-	}
-}
-
-func mergeExtension(out, in map[int32]Extension) {
-	for extNum, eIn := range in {
-		eOut := Extension{desc: eIn.desc}
-		if eIn.value != nil {
-			v := reflect.New(reflect.TypeOf(eIn.value)).Elem()
-			mergeAny(v, reflect.ValueOf(eIn.value), false, nil)
-			eOut.value = v.Interface()
-		}
-		if eIn.enc != nil {
-			eOut.enc = make([]byte, len(eIn.enc))
-			copy(eOut.enc, eIn.enc)
-		}
-
-		out[extNum] = eOut
-	}
-}

vendor/github.com/gogo/protobuf/proto/custom_gogo.go

@@ -1,39 +0,0 @@
-// Protocol Buffers for Go with Gadgets
-//
-// Copyright (c) 2018, The GoGo Authors. All rights reserved.
-// http://github.com/gogo/protobuf
-//
-// Redistribution and use in source and binary forms, with or without
-// modification, are permitted provided that the following conditions are
-// met:
-//
-//     * Redistributions of source code must retain the above copyright
-// notice, this list of conditions and the following disclaimer.
-//     * Redistributions in binary form must reproduce the above
-// copyright notice, this list of conditions and the following disclaimer
-// in the documentation and/or other materials provided with the
-// distribution.
-//
-// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
-package proto
-
-import "reflect"
-
-type custom interface {
-	Marshal() ([]byte, error)
-	Unmarshal(data []byte) error
-	Size() int
-}
-
-var customType = reflect.TypeOf((*custom)(nil)).Elem()

vendor/github.com/gogo/protobuf/proto/decode.go

@@ -1,427 +0,0 @@
-// Go support for Protocol Buffers - Google's data interchange format
-//
-// Copyright 2010 The Go Authors.  All rights reserved.
-// https://github.com/golang/protobuf
-//
-// Redistribution and use in source and binary forms, with or without
-// modification, are permitted provided that the following conditions are
-// met:
-//
-//     * Redistributions of source code must retain the above copyright
-// notice, this list of conditions and the following disclaimer.
-//     * Redistributions in binary form must reproduce the above
-// copyright notice, this list of conditions and the following disclaimer
-// in the documentation and/or other materials provided with the
-// distribution.
-//     * Neither the name of Google Inc. nor the names of its
-// contributors may be used to endorse or promote products derived from
-// this software without specific prior written permission.
-//
-// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
-package proto
-
-/*
- * Routines for decoding protocol buffer data to construct in-memory representations.
- */
-
-import (
-	"errors"
-	"fmt"
-	"io"
-)
-
-// errOverflow is returned when an integer is too large to be represented.
-var errOverflow = errors.New("proto: integer overflow")
-
-// ErrInternalBadWireType is returned by generated code when an incorrect
-// wire type is encountered. It does not get returned to user code.
-var ErrInternalBadWireType = errors.New("proto: internal error: bad wiretype for oneof")
-
-// DecodeVarint reads a varint-encoded integer from the slice.
-// It returns the integer and the number of bytes consumed, or
-// zero if there is not enough.
-// This is the format for the
-// int32, int64, uint32, uint64, bool, and enum
-// protocol buffer types.
-func DecodeVarint(buf []byte) (x uint64, n int) {
-	for shift := uint(0); shift < 64; shift += 7 {
-		if n >= len(buf) {
-			return 0, 0
-		}
-		b := uint64(buf[n])
-		n++
-		x |= (b & 0x7F) << shift
-		if (b & 0x80) == 0 {
-			return x, n
-		}
-	}
-
-	// The number is too large to represent in a 64-bit value.
-	return 0, 0
-}
-
-func (p *Buffer) decodeVarintSlow() (x uint64, err error) {
-	i := p.index
-	l := len(p.buf)
-
-	for shift := uint(0); shift < 64; shift += 7 {
-		if i >= l {
-			err = io.ErrUnexpectedEOF
-			return
-		}
-		b := p.buf[i]
-		i++
-		x |= (uint64(b) & 0x7F) << shift
-		if b < 0x80 {
-			p.index = i
-			return
-		}
-	}
-
-	// The number is too large to represent in a 64-bit value.
-	err = errOverflow
-	return
-}
-
-// DecodeVarint reads a varint-encoded integer from the Buffer.
-// This is the format for the
-// int32, int64, uint32, uint64, bool, and enum
-// protocol buffer types.
-func (p *Buffer) DecodeVarint() (x uint64, err error) {
-	i := p.index
-	buf := p.buf
-
-	if i >= len(buf) {
-		return 0, io.ErrUnexpectedEOF
-	} else if buf[i] < 0x80 {
-		p.index++
-		return uint64(buf[i]), nil
-	} else if len(buf)-i < 10 {
-		return p.decodeVarintSlow()
-	}
-
-	var b uint64
-	// we already checked the first byte
-	x = uint64(buf[i]) - 0x80
-	i++
-
-	b = uint64(buf[i])
-	i++
-	x += b << 7
-	if b&0x80 == 0 {
-		goto done
-	}
-	x -= 0x80 << 7
-
-	b = uint64(buf[i])
-	i++
-	x += b << 14
-	if b&0x80 == 0 {
-		goto done
-	}
-	x -= 0x80 << 14
-
-	b = uint64(buf[i])
-	i++
-	x += b << 21
-	if b&0x80 == 0 {
-		goto done
-	}
-	x -= 0x80 << 21
-
-	b = uint64(buf[i])
-	i++
-	x += b << 28
-	if b&0x80 == 0 {
-		goto done
-	}
-	x -= 0x80 << 28
-
-	b = uint64(buf[i])
-	i++
-	x += b << 35
-	if b&0x80 == 0 {
-		goto done
-	}
-	x -= 0x80 << 35
-
-	b = uint64(buf[i])
-	i++
-	x += b << 42
-	if b&0x80 == 0 {
-		goto done
-	}
-	x -= 0x80 << 42
-
-	b = uint64(buf[i])
-	i++
-	x += b << 49
-	if b&0x80 == 0 {
-		goto done
-	}
-	x -= 0x80 << 49
-
-	b = uint64(buf[i])
-	i++
-	x += b << 56
-	if b&0x80 == 0 {
-		goto done
-	}
-	x -= 0x80 << 56
-
-	b = uint64(buf[i])
-	i++
-	x += b << 63
-	if b&0x80 == 0 {
-		goto done
-	}
-
-	return 0, errOverflow
-
-done:
-	p.index = i
-	return x, nil
-}
-
-// DecodeFixed64 reads a 64-bit integer from the Buffer.
-// This is the format for the
-// fixed64, sfixed64, and double protocol buffer types.
-func (p *Buffer) DecodeFixed64() (x uint64, err error) {
-	// x, err already 0
-	i := p.index + 8
-	if i < 0 || i > len(p.buf) {
-		err = io.ErrUnexpectedEOF
-		return
-	}
-	p.index = i
-
-	x = uint64(p.buf[i-8])
-	x |= uint64(p.buf[i-7]) << 8
-	x |= uint64(p.buf[i-6]) << 16
-	x |= uint64(p.buf[i-5]) << 24
-	x |= uint64(p.buf[i-4]) << 32
-	x |= uint64(p.buf[i-3]) << 40
-	x |= uint64(p.buf[i-2]) << 48
-	x |= uint64(p.buf[i-1]) << 56
-	return
-}
-
-// DecodeFixed32 reads a 32-bit integer from the Buffer.
-// This is the format for the
-// fixed32, sfixed32, and float protocol buffer types.
-func (p *Buffer) DecodeFixed32() (x uint64, err error) {
-	// x, err already 0
-	i := p.index + 4
-	if i < 0 || i > len(p.buf) {
-		err = io.ErrUnexpectedEOF
-		return
-	}
-	p.index = i
-
-	x = uint64(p.buf[i-4])
-	x |= uint64(p.buf[i-3]) << 8
-	x |= uint64(p.buf[i-2]) << 16
-	x |= uint64(p.buf[i-1]) << 24
-	return
-}
-
-// DecodeZigzag64 reads a zigzag-encoded 64-bit integer
-// from the Buffer.
-// This is the format used for the sint64 protocol buffer type.
-func (p *Buffer) DecodeZigzag64() (x uint64, err error) {
-	x, err = p.DecodeVarint()
-	if err != nil {
-		return
-	}
-	x = (x >> 1) ^ uint64((int64(x&1)<<63)>>63)
-	return
-}
-
-// DecodeZigzag32 reads a zigzag-encoded 32-bit integer
-// from  the Buffer.
-// This is the format used for the sint32 protocol buffer type.
-func (p *Buffer) DecodeZigzag32() (x uint64, err error) {
-	x, err = p.DecodeVarint()
-	if err != nil {
-		return
-	}
-	x = uint64((uint32(x) >> 1) ^ uint32((int32(x&1)<<31)>>31))
-	return
-}
-
-// DecodeRawBytes reads a count-delimited byte buffer from the Buffer.
-// This is the format used for the bytes protocol buffer
-// type and for embedded messages.
-func (p *Buffer) DecodeRawBytes(alloc bool) (buf []byte, err error) {
-	n, err := p.DecodeVarint()
-	if err != nil {
-		return nil, err
-	}
-
-	nb := int(n)
-	if nb < 0 {
-		return nil, fmt.Errorf("proto: bad byte length %d", nb)
-	}
-	end := p.index + nb
-	if end < p.index || end > len(p.buf) {
-		return nil, io.ErrUnexpectedEOF
-	}
-
-	if !alloc {
-		// todo: check if can get more uses of alloc=false
-		buf = p.buf[p.index:end]
-		p.index += nb
-		return
-	}
-
-	buf = make([]byte, nb)
-	copy(buf, p.buf[p.index:])
-	p.index += nb
-	return
-}
-
-// DecodeStringBytes reads an encoded string from the Buffer.
-// This is the format used for the proto2 string type.
-func (p *Buffer) DecodeStringBytes() (s string, err error) {
-	buf, err := p.DecodeRawBytes(false)
-	if err != nil {
-		return
-	}
-	return string(buf), nil
-}
-
-// Unmarshaler is the interface representing objects that can
-// unmarshal themselves.  The argument points to data that may be
-// overwritten, so implementations should not keep references to the
-// buffer.
-// Unmarshal implementations should not clear the receiver.
-// Any unmarshaled data should be merged into the receiver.
-// Callers of Unmarshal that do not want to retain existing data
-// should Reset the receiver before calling Unmarshal.
-type Unmarshaler interface {
-	Unmarshal([]byte) error
-}
-
-// newUnmarshaler is the interface representing objects that can
-// unmarshal themselves. The semantics are identical to Unmarshaler.
-//
-// This exists to support protoc-gen-go generated messages.
-// The proto package will stop type-asserting to this interface in the future.
-//
-// DO NOT DEPEND ON THIS.
-type newUnmarshaler interface {
-	XXX_Unmarshal([]byte) error
-}
-
-// Unmarshal parses the protocol buffer representation in buf and places the
-// decoded result in pb.  If the struct underlying pb does not match
-// the data in buf, the results can be unpredictable.
-//
-// Unmarshal resets pb before starting to unmarshal, so any
-// existing data in pb is always removed. Use UnmarshalMerge
-// to preserve and append to existing data.
-func Unmarshal(buf []byte, pb Message) error {
-	pb.Reset()
-	if u, ok := pb.(newUnmarshaler); ok {
-		return u.XXX_Unmarshal(buf)
-	}
-	if u, ok := pb.(Unmarshaler); ok {
-		return u.Unmarshal(buf)
-	}
-	return NewBuffer(buf).Unmarshal(pb)
-}
-
-// UnmarshalMerge parses the protocol buffer representation in buf and
-// writes the decoded result to pb.  If the struct underlying pb does not match
-// the data in buf, the results can be unpredictable.
-//
-// UnmarshalMerge merges into existing data in pb.
-// Most code should use Unmarshal instead.
-func UnmarshalMerge(buf []byte, pb Message) error {
-	if u, ok := pb.(newUnmarshaler); ok {
-		return u.XXX_Unmarshal(buf)
-	}
-	if u, ok := pb.(Unmarshaler); ok {
-		// NOTE: The history of proto have unfortunately been inconsistent
-		// whether Unmarshaler should or should not implicitly clear itself.
-		// Some implementations do, most do not.
-		// Thus, calling this here may or may not do what people want.
-		//
-		// See https://github.com/golang/protobuf/issues/424
-		return u.Unmarshal(buf)
-	}
-	return NewBuffer(buf).Unmarshal(pb)
-}
-
-// DecodeMessage reads a count-delimited message from the Buffer.
-func (p *Buffer) DecodeMessage(pb Message) error {
-	enc, err := p.DecodeRawBytes(false)
-	if err != nil {
-		return err
-	}
-	return NewBuffer(enc).Unmarshal(pb)
-}
-
-// DecodeGroup reads a tag-delimited group from the Buffer.
-// StartGroup tag is already consumed. This function consumes
-// EndGroup tag.
-func (p *Buffer) DecodeGroup(pb Message) error {
-	b := p.buf[p.index:]
-	x, y := findEndGroup(b)
-	if x < 0 {
-		return io.ErrUnexpectedEOF
-	}
-	err := Unmarshal(b[:x], pb)
-	p.index += y
-	return err
-}
-
-// Unmarshal parses the protocol buffer representation in the
-// Buffer and places the decoded result in pb.  If the struct
-// underlying pb does not match the data in the buffer, the results can be
-// unpredictable.
-//
-// Unlike proto.Unmarshal, this does not reset pb before starting to unmarshal.
-func (p *Buffer) Unmarshal(pb Message) error {
-	// If the object can unmarshal itself, let it.
-	if u, ok := pb.(newUnmarshaler); ok {
-		err := u.XXX_Unmarshal(p.buf[p.index:])
-		p.index = len(p.buf)
-		return err
-	}
-	if u, ok := pb.(Unmarshaler); ok {
-		// NOTE: The history of proto have unfortunately been inconsistent
-		// whether Unmarshaler should or should not implicitly clear itself.
-		// Some implementations do, most do not.
-		// Thus, calling this here may or may not do what people want.
-		//
-		// See https://github.com/golang/protobuf/issues/424
-		err := u.Unmarshal(p.buf[p.index:])
-		p.index = len(p.buf)
-		return err
-	}
-
-	// Slow workaround for messages that aren't Unmarshalers.
-	// This includes some hand-coded .pb.go files and
-	// bootstrap protos.
-	// TODO: fix all of those and then add Unmarshal to
-	// the Message interface. Then:
-	// The cast above and code below can be deleted.
-	// The old unmarshaler can be deleted.
-	// Clients can call Unmarshal directly (can already do that, actually).
-	var info InternalMessageInfo
-	err := info.Unmarshal(pb, p.buf[p.index:])
-	p.index = len(p.buf)
-	return err
-}

vendor/github.com/gogo/protobuf/proto/deprecated.go

@@ -1,63 +0,0 @@
-// Go support for Protocol Buffers - Google's data interchange format
-//
-// Copyright 2018 The Go Authors.  All rights reserved.
-// https://github.com/golang/protobuf
-//
-// Redistribution and use in source and binary forms, with or without
-// modification, are permitted provided that the following conditions are
-// met:
-//
-//     * Redistributions of source code must retain the above copyright
-// notice, this list of conditions and the following disclaimer.
-//     * Redistributions in binary form must reproduce the above
-// copyright notice, this list of conditions and the following disclaimer
-// in the documentation and/or other materials provided with the
-// distribution.
-//     * Neither the name of Google Inc. nor the names of its
-// contributors may be used to endorse or promote products derived from
-// this software without specific prior written permission.
-//
-// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
-package proto
-
-import "errors"
-
-// Deprecated: do not use.
-type Stats struct{ Emalloc, Dmalloc, Encode, Decode, Chit, Cmiss, Size uint64 }
-
-// Deprecated: do not use.
-func GetStats() Stats { return Stats{} }
-
-// Deprecated: do not use.
-func MarshalMessageSet(interface{}) ([]byte, error) {
-	return nil, errors.New("proto: not implemented")
-}
-
-// Deprecated: do not use.
-func UnmarshalMessageSet([]byte, interface{}) error {
-	return errors.New("proto: not implemented")
-}
-
-// Deprecated: do not use.
-func MarshalMessageSetJSON(interface{}) ([]byte, error) {
-	return nil, errors.New("proto: not implemented")
-}
-
-// Deprecated: do not use.
-func UnmarshalMessageSetJSON([]byte, interface{}) error {
-	return errors.New("proto: not implemented")
-}
-
-// Deprecated: do not use.
-func RegisterMessageSetType(Message, int32, string) {}

vendor/github.com/gogo/protobuf/proto/discard.go

@@ -1,350 +0,0 @@
-// Go support for Protocol Buffers - Google's data interchange format
-//
-// Copyright 2017 The Go Authors.  All rights reserved.
-// https://github.com/golang/protobuf
-//
-// Redistribution and use in source and binary forms, with or without
-// modification, are permitted provided that the following conditions are
-// met:
-//
-//     * Redistributions of source code must retain the above copyright
-// notice, this list of conditions and the following disclaimer.
-//     * Redistributions in binary form must reproduce the above
-// copyright notice, this list of conditions and the following disclaimer
-// in the documentation and/or other materials provided with the
-// distribution.
-//     * Neither the name of Google Inc. nor the names of its
-// contributors may be used to endorse or promote products derived from
-// this software without specific prior written permission.
-//
-// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
-package proto
-
-import (
-	"fmt"
-	"reflect"
-	"strings"
-	"sync"
-	"sync/atomic"
-)
-
-type generatedDiscarder interface {
-	XXX_DiscardUnknown()
-}
-
-// DiscardUnknown recursively discards all unknown fields from this message
-// and all embedded messages.
-//
-// When unmarshaling a message with unrecognized fields, the tags and values
-// of such fields are preserved in the Message. This allows a later call to
-// marshal to be able to produce a message that continues to have those
-// unrecognized fields. To avoid this, DiscardUnknown is used to
-// explicitly clear the unknown fields after unmarshaling.
-//
-// For proto2 messages, the unknown fields of message extensions are only
-// discarded from messages that have been accessed via GetExtension.
-func DiscardUnknown(m Message) {
-	if m, ok := m.(generatedDiscarder); ok {
-		m.XXX_DiscardUnknown()
-		return
-	}
-	// TODO: Dynamically populate a InternalMessageInfo for legacy messages,
-	// but the master branch has no implementation for InternalMessageInfo,
-	// so it would be more work to replicate that approach.
-	discardLegacy(m)
-}
-
-// DiscardUnknown recursively discards all unknown fields.
-func (a *InternalMessageInfo) DiscardUnknown(m Message) {
-	di := atomicLoadDiscardInfo(&a.discard)
-	if di == nil {
-		di = getDiscardInfo(reflect.TypeOf(m).Elem())
-		atomicStoreDiscardInfo(&a.discard, di)
-	}
-	di.discard(toPointer(&m))
-}
-
-type discardInfo struct {
-	typ reflect.Type
-
-	initialized int32 // 0: only typ is valid, 1: everything is valid
-	lock        sync.Mutex
-
-	fields       []discardFieldInfo
-	unrecognized field
-}
-
-type discardFieldInfo struct {
-	field   field // Offset of field, guaranteed to be valid
-	discard func(src pointer)
-}
-
-var (
-	discardInfoMap  = map[reflect.Type]*discardInfo{}
-	discardInfoLock sync.Mutex
-)
-
-func getDiscardInfo(t reflect.Type) *discardInfo {
-	discardInfoLock.Lock()
-	defer discardInfoLock.Unlock()
-	di := discardInfoMap[t]
-	if di == nil {
-		di = &discardInfo{typ: t}
-		discardInfoMap[t] = di
-	}
-	return di
-}
-
-func (di *discardInfo) discard(src pointer) {
-	if src.isNil() {
-		return // Nothing to do.
-	}
-
-	if atomic.LoadInt32(&di.initialized) == 0 {
-		di.computeDiscardInfo()
-	}
-
-	for _, fi := range di.fields {
-		sfp := src.offset(fi.field)
-		fi.discard(sfp)
-	}
-
-	// For proto2 messages, only discard unknown fields in message extensions
-	// that have been accessed via GetExtension.
-	if em, err := extendable(src.asPointerTo(di.typ).Interface()); err == nil {
-		// Ignore lock since DiscardUnknown is not concurrency safe.
-		emm, _ := em.extensionsRead()
-		for _, mx := range emm {
-			if m, ok := mx.value.(Message); ok {
-				DiscardUnknown(m)
-			}
-		}
-	}
-
-	if di.unrecognized.IsValid() {
-		*src.offset(di.unrecognized).toBytes() = nil
-	}
-}
-
-func (di *discardInfo) computeDiscardInfo() {
-	di.lock.Lock()
-	defer di.lock.Unlock()
-	if di.initialized != 0 {
-		return
-	}
-	t := di.typ
-	n := t.NumField()
-
-	for i := 0; i < n; i++ {
-		f := t.Field(i)
-		if strings.HasPrefix(f.Name, "XXX_") {
-			continue
-		}
-
-		dfi := discardFieldInfo{field: toField(&f)}
-		tf := f.Type
-
-		// Unwrap tf to get its most basic type.
-		var isPointer, isSlice bool
-		if tf.Kind() == reflect.Slice && tf.Elem().Kind() != reflect.Uint8 {
-			isSlice = true
-			tf = tf.Elem()
-		}
-		if tf.Kind() == reflect.Ptr {
-			isPointer = true
-			tf = tf.Elem()
-		}
-		if isPointer && isSlice && tf.Kind() != reflect.Struct {
-			panic(fmt.Sprintf("%v.%s cannot be a slice of pointers to primitive types", t, f.Name))
-		}
-
-		switch tf.Kind() {
-		case reflect.Struct:
-			switch {
-			case !isPointer:
-				panic(fmt.Sprintf("%v.%s cannot be a direct struct value", t, f.Name))
-			case isSlice: // E.g., []*pb.T
-				discardInfo := getDiscardInfo(tf)
-				dfi.discard = func(src pointer) {
-					sps := src.getPointerSlice()
-					for _, sp := range sps {
-						if !sp.isNil() {
-							discardInfo.discard(sp)
-						}
-					}
-				}
-			default: // E.g., *pb.T
-				discardInfo := getDiscardInfo(tf)
-				dfi.discard = func(src pointer) {
-					sp := src.getPointer()
-					if !sp.isNil() {
-						discardInfo.discard(sp)
-					}
-				}
-			}
-		case reflect.Map:
-			switch {
-			case isPointer || isSlice:
-				panic(fmt.Sprintf("%v.%s cannot be a pointer to a map or a slice of map values", t, f.Name))
-			default: // E.g., map[K]V
-				if tf.Elem().Kind() == reflect.Ptr { // Proto struct (e.g., *T)
-					dfi.discard = func(src pointer) {
-						sm := src.asPointerTo(tf).Elem()
-						if sm.Len() == 0 {
-							return
-						}
-						for _, key := range sm.MapKeys() {
-							val := sm.MapIndex(key)
-							DiscardUnknown(val.Interface().(Message))
-						}
-					}
-				} else {
-					dfi.discard = func(pointer) {} // Noop
-				}
-			}
-		case reflect.Interface:
-			// Must be oneof field.
-			switch {
-			case isPointer || isSlice:
-				panic(fmt.Sprintf("%v.%s cannot be a pointer to a interface or a slice of interface values", t, f.Name))
-			default: // E.g., interface{}
-				// TODO: Make this faster?
-				dfi.discard = func(src pointer) {
-					su := src.asPointerTo(tf).Elem()
-					if !su.IsNil() {
-						sv := su.Elem().Elem().Field(0)
-						if sv.Kind() == reflect.Ptr && sv.IsNil() {
-							return
-						}
-						switch sv.Type().Kind() {
-						case reflect.Ptr: // Proto struct (e.g., *T)
-							DiscardUnknown(sv.Interface().(Message))
-						}
-					}
-				}
-			}
-		default:
-			continue
-		}
-		di.fields = append(di.fields, dfi)
-	}
-
-	di.unrecognized = invalidField
-	if f, ok := t.FieldByName("XXX_unrecognized"); ok {
-		if f.Type != reflect.TypeOf([]byte{}) {
-			panic("expected XXX_unrecognized to be of type []byte")
-		}
-		di.unrecognized = toField(&f)
-	}
-
-	atomic.StoreInt32(&di.initialized, 1)
-}
-
-func discardLegacy(m Message) {
-	v := reflect.ValueOf(m)
-	if v.Kind() != reflect.Ptr || v.IsNil() {
-		return
-	}
-	v = v.Elem()
-	if v.Kind() != reflect.Struct {
-		return
-	}
-	t := v.Type()
-
-	for i := 0; i < v.NumField(); i++ {
-		f := t.Field(i)
-		if strings.HasPrefix(f.Name, "XXX_") {
-			continue
-		}
-		vf := v.Field(i)
-		tf := f.Type
-
-		// Unwrap tf to get its most basic type.
-		var isPointer, isSlice bool
-		if tf.Kind() == reflect.Slice && tf.Elem().Kind() != reflect.Uint8 {
-			isSlice = true
-			tf = tf.Elem()
-		}
-		if tf.Kind() == reflect.Ptr {
-			isPointer = true
-			tf = tf.Elem()
-		}
-		if isPointer && isSlice && tf.Kind() != reflect.Struct {
-			panic(fmt.Sprintf("%T.%s cannot be a slice of pointers to primitive types", m, f.Name))
-		}
-
-		switch tf.Kind() {
-		case reflect.Struct:
-			switch {
-			case !isPointer:
-				panic(fmt.Sprintf("%T.%s cannot be a direct struct value", m, f.Name))
-			case isSlice: // E.g., []*pb.T
-				for j := 0; j < vf.Len(); j++ {
-					discardLegacy(vf.Index(j).Interface().(Message))
-				}
-			default: // E.g., *pb.T
-				discardLegacy(vf.Interface().(Message))
-			}
-		case reflect.Map:
-			switch {
-			case isPointer || isSlice:
-				panic(fmt.Sprintf("%T.%s cannot be a pointer to a map or a slice of map values", m, f.Name))
-			default: // E.g., map[K]V
-				tv := vf.Type().Elem()
-				if tv.Kind() == reflect.Ptr && tv.Implements(protoMessageType) { // Proto struct (e.g., *T)
-					for _, key := range vf.MapKeys() {
-						val := vf.MapIndex(key)
-						discardLegacy(val.Interface().(Message))
-					}
-				}
-			}
-		case reflect.Interface:
-			// Must be oneof field.
-			switch {
-			case isPointer || isSlice:
-				panic(fmt.Sprintf("%T.%s cannot be a pointer to a interface or a slice of interface values", m, f.Name))
-			default: // E.g., test_proto.isCommunique_Union interface
-				if !vf.IsNil() && f.Tag.Get("protobuf_oneof") != "" {
-					vf = vf.Elem() // E.g., *test_proto.Communique_Msg
-					if !vf.IsNil() {
-						vf = vf.Elem()   // E.g., test_proto.Communique_Msg
-						vf = vf.Field(0) // E.g., Proto struct (e.g., *T) or primitive value
-						if vf.Kind() == reflect.Ptr {
-							discardLegacy(vf.Interface().(Message))
-						}
-					}
-				}
-			}
-		}
-	}
-
-	if vf := v.FieldByName("XXX_unrecognized"); vf.IsValid() {
-		if vf.Type() != reflect.TypeOf([]byte{}) {
-			panic("expected XXX_unrecognized to be of type []byte")
-		}
-		vf.Set(reflect.ValueOf([]byte(nil)))
-	}
-
-	// For proto2 messages, only discard unknown fields in message extensions
-	// that have been accessed via GetExtension.
-	if em, err := extendable(m); err == nil {
-		// Ignore lock since discardLegacy is not concurrency safe.
-		emm, _ := em.extensionsRead()
-		for _, mx := range emm {
-			if m, ok := mx.value.(Message); ok {
-				discardLegacy(m)
-			}
-		}
-	}
-}

vendor/github.com/gogo/protobuf/proto/duration.go

@@ -1,100 +0,0 @@
-// Go support for Protocol Buffers - Google's data interchange format
-//
-// Copyright 2016 The Go Authors.  All rights reserved.
-// https://github.com/golang/protobuf
-//
-// Redistribution and use in source and binary forms, with or without
-// modification, are permitted provided that the following conditions are
-// met:
-//
-//     * Redistributions of source code must retain the above copyright
-// notice, this list of conditions and the following disclaimer.
-//     * Redistributions in binary form must reproduce the above
-// copyright notice, this list of conditions and the following disclaimer
-// in the documentation and/or other materials provided with the
-// distribution.
-//     * Neither the name of Google Inc. nor the names of its
-// contributors may be used to endorse or promote products derived from
-// this software without specific prior written permission.
-//
-// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
-package proto
-
-// This file implements conversions between google.protobuf.Duration
-// and time.Duration.
-
-import (
-	"errors"
-	"fmt"
-	"time"
-)
-
-const (
-	// Range of a Duration in seconds, as specified in
-	// google/protobuf/duration.proto. This is about 10,000 years in seconds.
-	maxSeconds = int64(10000 * 365.25 * 24 * 60 * 60)
-	minSeconds = -maxSeconds
-)
-
-// validateDuration determines whether the Duration is valid according to the
-// definition in google/protobuf/duration.proto. A valid Duration
-// may still be too large to fit into a time.Duration (the range of Duration
-// is about 10,000 years, and the range of time.Duration is about 290).
-func validateDuration(d *duration) error {
-	if d == nil {
-		return errors.New("duration: nil Duration")
-	}
-	if d.Seconds < minSeconds || d.Seconds > maxSeconds {
-		return fmt.Errorf("duration: %#v: seconds out of range", d)
-	}
-	if d.Nanos <= -1e9 || d.Nanos >= 1e9 {
-		return fmt.Errorf("duration: %#v: nanos out of range", d)
-	}
-	// Seconds and Nanos must have the same sign, unless d.Nanos is zero.
-	if (d.Seconds < 0 && d.Nanos > 0) || (d.Seconds > 0 && d.Nanos < 0) {
-		return fmt.Errorf("duration: %#v: seconds and nanos have different signs", d)
-	}
-	return nil
-}
-
-// DurationFromProto converts a Duration to a time.Duration. DurationFromProto
-// returns an error if the Duration is invalid or is too large to be
-// represented in a time.Duration.
-func durationFromProto(p *duration) (time.Duration, error) {
-	if err := validateDuration(p); err != nil {
-		return 0, err
-	}
-	d := time.Duration(p.Seconds) * time.Second
-	if int64(d/time.Second) != p.Seconds {
-		return 0, fmt.Errorf("duration: %#v is out of range for time.Duration", p)
-	}
-	if p.Nanos != 0 {
-		d += time.Duration(p.Nanos)
-		if (d < 0) != (p.Nanos < 0) {
-			return 0, fmt.Errorf("duration: %#v is out of range for time.Duration", p)
-		}
-	}
-	return d, nil
-}
-
-// DurationProto converts a time.Duration to a Duration.
-func durationProto(d time.Duration) *duration {
-	nanos := d.Nanoseconds()
-	secs := nanos / 1e9
-	nanos -= secs * 1e9
-	return &duration{
-		Seconds: secs,
-		Nanos:   int32(nanos),
-	}
-}

vendor/github.com/gogo/protobuf/proto/duration_gogo.go

@@ -1,49 +0,0 @@
-// Protocol Buffers for Go with Gadgets
-//
-// Copyright (c) 2016, The GoGo Authors. All rights reserved.
-// http://github.com/gogo/protobuf
-//
-// Redistribution and use in source and binary forms, with or without
-// modification, are permitted provided that the following conditions are
-// met:
-//
-//     * Redistributions of source code must retain the above copyright
-// notice, this list of conditions and the following disclaimer.
-//     * Redistributions in binary form must reproduce the above
-// copyright notice, this list of conditions and the following disclaimer
-// in the documentation and/or other materials provided with the
-// distribution.
-//
-// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
-package proto
-
-import (
-	"reflect"
-	"time"
-)
-
-var durationType = reflect.TypeOf((*time.Duration)(nil)).Elem()
-
-type duration struct {
-	Seconds int64 `protobuf:"varint,1,opt,name=seconds,proto3" json:"seconds,omitempty"`
-	Nanos   int32 `protobuf:"varint,2,opt,name=nanos,proto3" json:"nanos,omitempty"`
-}
-
-func (m *duration) Reset()       { *m = duration{} }
-func (*duration) ProtoMessage()  {}
-func (*duration) String() string { return "duration<string>" }
-
-func init() {
-	RegisterType((*duration)(nil), "gogo.protobuf.proto.duration")
-}

vendor/github.com/gogo/protobuf/proto/encode.go

@@ -1,205 +0,0 @@
-// Go support for Protocol Buffers - Google's data interchange format
-//
-// Copyright 2010 The Go Authors.  All rights reserved.
-// https://github.com/golang/protobuf
-//
-// Redistribution and use in source and binary forms, with or without
-// modification, are permitted provided that the following conditions are
-// met:
-//
-//     * Redistributions of source code must retain the above copyright
-// notice, this list of conditions and the following disclaimer.
-//     * Redistributions in binary form must reproduce the above
-// copyright notice, this list of conditions and the following disclaimer
-// in the documentation and/or other materials provided with the
-// distribution.
-//     * Neither the name of Google Inc. nor the names of its
-// contributors may be used to endorse or promote products derived from
-// this software without specific prior written permission.
-//
-// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
-package proto
-
-/*
- * Routines for encoding data into the wire format for protocol buffers.
- */
-
-import (
-	"errors"
-	"reflect"
-)
-
-var (
-	// errRepeatedHasNil is the error returned if Marshal is called with
-	// a struct with a repeated field containing a nil element.
-	errRepeatedHasNil = errors.New("proto: repeated field has nil element")
-
-	// errOneofHasNil is the error returned if Marshal is called with
-	// a struct with a oneof field containing a nil element.
-	errOneofHasNil = errors.New("proto: oneof field has nil value")
-
-	// ErrNil is the error returned if Marshal is called with nil.
-	ErrNil = errors.New("proto: Marshal called with nil")
-
-	// ErrTooLarge is the error returned if Marshal is called with a
-	// message that encodes to >2GB.
-	ErrTooLarge = errors.New("proto: message encodes to over 2 GB")
-)
-
-// The fundamental encoders that put bytes on the wire.
-// Those that take integer types all accept uint64 and are
-// therefore of type valueEncoder.
-
-const maxVarintBytes = 10 // maximum length of a varint
-
-// EncodeVarint returns the varint encoding of x.
-// This is the format for the
-// int32, int64, uint32, uint64, bool, and enum
-// protocol buffer types.
-// Not used by the package itself, but helpful to clients
-// wishing to use the same encoding.
-func EncodeVarint(x uint64) []byte {
-	var buf [maxVarintBytes]byte
-	var n int
-	for n = 0; x > 127; n++ {
-		buf[n] = 0x80 | uint8(x&0x7F)
-		x >>= 7
-	}
-	buf[n] = uint8(x)
-	n++
-	return buf[0:n]
-}
-
-// EncodeVarint writes a varint-encoded integer to the Buffer.
-// This is the format for the
-// int32, int64, uint32, uint64, bool, and enum
-// protocol buffer types.
-func (p *Buffer) EncodeVarint(x uint64) error {
-	for x >= 1<<7 {
-		p.buf = append(p.buf, uint8(x&0x7f|0x80))
-		x >>= 7
-	}
-	p.buf = append(p.buf, uint8(x))
-	return nil
-}
-
-// SizeVarint returns the varint encoding size of an integer.
-func SizeVarint(x uint64) int {
-	switch {
-	case x < 1<<7:
-		return 1
-	case x < 1<<14:
-		return 2
-	case x < 1<<21:
-		return 3
-	case x < 1<<28:
-		return 4
-	case x < 1<<35:
-		return 5
-	case x < 1<<42:
-		return 6
-	case x < 1<<49:
-		return 7
-	case x < 1<<56:
-		return 8
-	case x < 1<<63:
-		return 9
-	}
-	return 10
-}
-
-// EncodeFixed64 writes a 64-bit integer to the Buffer.
-// This is the format for the
-// fixed64, sfixed64, and double protocol buffer types.
-func (p *Buffer) EncodeFixed64(x uint64) error {
-	p.buf = append(p.buf,
-		uint8(x),
-		uint8(x>>8),
-		uint8(x>>16),
-		uint8(x>>24),
-		uint8(x>>32),
-		uint8(x>>40),
-		uint8(x>>48),
-		uint8(x>>56))
-	return nil
-}
-
-// EncodeFixed32 writes a 32-bit integer to the Buffer.
-// This is the format for the
-// fixed32, sfixed32, and float protocol buffer types.
-func (p *Buffer) EncodeFixed32(x uint64) error {
-	p.buf = append(p.buf,
-		uint8(x),
-		uint8(x>>8),
-		uint8(x>>16),
-		uint8(x>>24))
-	return nil
-}
-
-// EncodeZigzag64 writes a zigzag-encoded 64-bit integer
-// to the Buffer.
-// This is the format used for the sint64 protocol buffer type.
-func (p *Buffer) EncodeZigzag64(x uint64) error {
-	// use signed number to get arithmetic right shift.
-	return p.EncodeVarint(uint64((x << 1) ^ uint64((int64(x) >> 63))))
-}
-
-// EncodeZigzag32 writes a zigzag-encoded 32-bit integer
-// to the Buffer.
-// This is the format used for the sint32 protocol buffer type.
-func (p *Buffer) EncodeZigzag32(x uint64) error {
-	// use signed number to get arithmetic right shift.
-	return p.EncodeVarint(uint64((uint32(x) << 1) ^ uint32((int32(x) >> 31))))
-}
-
-// EncodeRawBytes writes a count-delimited byte buffer to the Buffer.
-// This is the format used for the bytes protocol buffer
-// type and for embedded messages.
-func (p *Buffer) EncodeRawBytes(b []byte) error {
-	p.EncodeVarint(uint64(len(b)))
-	p.buf = append(p.buf, b...)
-	return nil
-}
-
-// EncodeStringBytes writes an encoded string to the Buffer.
-// This is the format used for the proto2 string type.
-func (p *Buffer) EncodeStringBytes(s string) error {
-	p.EncodeVarint(uint64(len(s)))
-	p.buf = append(p.buf, s...)
-	return nil
-}
-
-// Marshaler is the interface representing objects that can marshal themselves.
-type Marshaler interface {
-	Marshal() ([]byte, error)
-}
-
-// EncodeMessage writes the protocol buffer to the Buffer,
-// prefixed by a varint-encoded length.
-func (p *Buffer) EncodeMessage(pb Message) error {
-	siz := Size(pb)
-	sizVar := SizeVarint(uint64(siz))
-	p.grow(siz + sizVar)
-	p.EncodeVarint(uint64(siz))
-	return p.Marshal(pb)
-}
-
-// All protocol buffer fields are nillable, but be careful.
-func isNil(v reflect.Value) bool {
-	switch v.Kind() {
-	case reflect.Interface, reflect.Map, reflect.Ptr, reflect.Slice:
-		return v.IsNil()
-	}
-	return false
-}

vendor/github.com/gogo/protobuf/proto/encode_gogo.go

@@ -1,33 +0,0 @@
-// Protocol Buffers for Go with Gadgets
-//
-// Copyright (c) 2013, The GoGo Authors. All rights reserved.
-// http://github.com/gogo/protobuf
-//
-// Redistribution and use in source and binary forms, with or without
-// modification, are permitted provided that the following conditions are
-// met:
-//
-//     * Redistributions of source code must retain the above copyright
-// notice, this list of conditions and the following disclaimer.
-//     * Redistributions in binary form must reproduce the above
-// copyright notice, this list of conditions and the following disclaimer
-// in the documentation and/or other materials provided with the
-// distribution.
-//
-// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
-package proto
-
-func NewRequiredNotSetError(field string) *RequiredNotSetError {
-	return &RequiredNotSetError{field}
-}

vendor/github.com/gogo/protobuf/proto/equal.go

@@ -1,300 +0,0 @@
-// Go support for Protocol Buffers - Google's data interchange format
-//
-// Copyright 2011 The Go Authors.  All rights reserved.
-// https://github.com/golang/protobuf
-//
-// Redistribution and use in source and binary forms, with or without
-// modification, are permitted provided that the following conditions are
-// met:
-//
-//     * Redistributions of source code must retain the above copyright
-// notice, this list of conditions and the following disclaimer.
-//     * Redistributions in binary form must reproduce the above
-// copyright notice, this list of conditions and the following disclaimer
-// in the documentation and/or other materials provided with the
-// distribution.
-//     * Neither the name of Google Inc. nor the names of its
-// contributors may be used to endorse or promote products derived from
-// this software without specific prior written permission.
-//
-// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
-// Protocol buffer comparison.
-
-package proto
-
-import (
-	"bytes"
-	"log"
-	"reflect"
-	"strings"
-)
-
-/*
-Equal returns true iff protocol buffers a and b are equal.
-The arguments must both be pointers to protocol buffer structs.
-
-Equality is defined in this way:
-  - Two messages are equal iff they are the same type,
-    corresponding fields are equal, unknown field sets
-    are equal, and extensions sets are equal.
-  - Two set scalar fields are equal iff their values are equal.
-    If the fields are of a floating-point type, remember that
-    NaN != x for all x, including NaN. If the message is defined
-    in a proto3 .proto file, fields are not "set"; specifically,
-    zero length proto3 "bytes" fields are equal (nil == {}).
-  - Two repeated fields are equal iff their lengths are the same,
-    and their corresponding elements are equal. Note a "bytes" field,
-    although represented by []byte, is not a repeated field and the
-    rule for the scalar fields described above applies.
-  - Two unset fields are equal.
-  - Two unknown field sets are equal if their current
-    encoded state is equal.
-  - Two extension sets are equal iff they have corresponding
-    elements that are pairwise equal.
-  - Two map fields are equal iff their lengths are the same,
-    and they contain the same set of elements. Zero-length map
-    fields are equal.
-  - Every other combination of things are not equal.
-
-The return value is undefined if a and b are not protocol buffers.
-*/
-func Equal(a, b Message) bool {
-	if a == nil || b == nil {
-		return a == b
-	}
-	v1, v2 := reflect.ValueOf(a), reflect.ValueOf(b)
-	if v1.Type() != v2.Type() {
-		return false
-	}
-	if v1.Kind() == reflect.Ptr {
-		if v1.IsNil() {
-			return v2.IsNil()
-		}
-		if v2.IsNil() {
-			return false
-		}
-		v1, v2 = v1.Elem(), v2.Elem()
-	}
-	if v1.Kind() != reflect.Struct {
-		return false
-	}
-	return equalStruct(v1, v2)
-}
-
-// v1 and v2 are known to have the same type.
-func equalStruct(v1, v2 reflect.Value) bool {
-	sprop := GetProperties(v1.Type())
-	for i := 0; i < v1.NumField(); i++ {
-		f := v1.Type().Field(i)
-		if strings.HasPrefix(f.Name, "XXX_") {
-			continue
-		}
-		f1, f2 := v1.Field(i), v2.Field(i)
-		if f.Type.Kind() == reflect.Ptr {
-			if n1, n2 := f1.IsNil(), f2.IsNil(); n1 && n2 {
-				// both unset
-				continue
-			} else if n1 != n2 {
-				// set/unset mismatch
-				return false
-			}
-			f1, f2 = f1.Elem(), f2.Elem()
-		}
-		if !equalAny(f1, f2, sprop.Prop[i]) {
-			return false
-		}
-	}
-
-	if em1 := v1.FieldByName("XXX_InternalExtensions"); em1.IsValid() {
-		em2 := v2.FieldByName("XXX_InternalExtensions")
-		if !equalExtensions(v1.Type(), em1.Interface().(XXX_InternalExtensions), em2.Interface().(XXX_InternalExtensions)) {
-			return false
-		}
-	}
-
-	if em1 := v1.FieldByName("XXX_extensions"); em1.IsValid() {
-		em2 := v2.FieldByName("XXX_extensions")
-		if !equalExtMap(v1.Type(), em1.Interface().(map[int32]Extension), em2.Interface().(map[int32]Extension)) {
-			return false
-		}
-	}
-
-	uf := v1.FieldByName("XXX_unrecognized")
-	if !uf.IsValid() {
-		return true
-	}
-
-	u1 := uf.Bytes()
-	u2 := v2.FieldByName("XXX_unrecognized").Bytes()
-	return bytes.Equal(u1, u2)
-}
-
-// v1 and v2 are known to have the same type.
-// prop may be nil.
-func equalAny(v1, v2 reflect.Value, prop *Properties) bool {
-	if v1.Type() == protoMessageType {
-		m1, _ := v1.Interface().(Message)
-		m2, _ := v2.Interface().(Message)
-		return Equal(m1, m2)
-	}
-	switch v1.Kind() {
-	case reflect.Bool:
-		return v1.Bool() == v2.Bool()
-	case reflect.Float32, reflect.Float64:
-		return v1.Float() == v2.Float()
-	case reflect.Int32, reflect.Int64:
-		return v1.Int() == v2.Int()
-	case reflect.Interface:
-		// Probably a oneof field; compare the inner values.
-		n1, n2 := v1.IsNil(), v2.IsNil()
-		if n1 || n2 {
-			return n1 == n2
-		}
-		e1, e2 := v1.Elem(), v2.Elem()
-		if e1.Type() != e2.Type() {
-			return false
-		}
-		return equalAny(e1, e2, nil)
-	case reflect.Map:
-		if v1.Len() != v2.Len() {
-			return false
-		}
-		for _, key := range v1.MapKeys() {
-			val2 := v2.MapIndex(key)
-			if !val2.IsValid() {
-				// This key was not found in the second map.
-				return false
-			}
-			if !equalAny(v1.MapIndex(key), val2, nil) {
-				return false
-			}
-		}
-		return true
-	case reflect.Ptr:
-		// Maps may have nil values in them, so check for nil.
-		if v1.IsNil() && v2.IsNil() {
-			return true
-		}
-		if v1.IsNil() != v2.IsNil() {
-			return false
-		}
-		return equalAny(v1.Elem(), v2.Elem(), prop)
-	case reflect.Slice:
-		if v1.Type().Elem().Kind() == reflect.Uint8 {
-			// short circuit: []byte
-
-			// Edge case: if this is in a proto3 message, a zero length
-			// bytes field is considered the zero value.
-			if prop != nil && prop.proto3 && v1.Len() == 0 && v2.Len() == 0 {
-				return true
-			}
-			if v1.IsNil() != v2.IsNil() {
-				return false
-			}
-			return bytes.Equal(v1.Interface().([]byte), v2.Interface().([]byte))
-		}
-
-		if v1.Len() != v2.Len() {
-			return false
-		}
-		for i := 0; i < v1.Len(); i++ {
-			if !equalAny(v1.Index(i), v2.Index(i), prop) {
-				return false
-			}
-		}
-		return true
-	case reflect.String:
-		return v1.Interface().(string) == v2.Interface().(string)
-	case reflect.Struct:
-		return equalStruct(v1, v2)
-	case reflect.Uint32, reflect.Uint64:
-		return v1.Uint() == v2.Uint()
-	}
-
-	// unknown type, so not a protocol buffer
-	log.Printf("proto: don't know how to compare %v", v1)
-	return false
-}
-
-// base is the struct type that the extensions are based on.
-// x1 and x2 are InternalExtensions.
-func equalExtensions(base reflect.Type, x1, x2 XXX_InternalExtensions) bool {
-	em1, _ := x1.extensionsRead()
-	em2, _ := x2.extensionsRead()
-	return equalExtMap(base, em1, em2)
-}
-
-func equalExtMap(base reflect.Type, em1, em2 map[int32]Extension) bool {
-	if len(em1) != len(em2) {
-		return false
-	}
-
-	for extNum, e1 := range em1 {
-		e2, ok := em2[extNum]
-		if !ok {
-			return false
-		}
-
-		m1, m2 := e1.value, e2.value
-
-		if m1 == nil && m2 == nil {
-			// Both have only encoded form.
-			if bytes.Equal(e1.enc, e2.enc) {
-				continue
-			}
-			// The bytes are different, but the extensions might still be
-			// equal. We need to decode them to compare.
-		}
-
-		if m1 != nil && m2 != nil {
-			// Both are unencoded.
-			if !equalAny(reflect.ValueOf(m1), reflect.ValueOf(m2), nil) {
-				return false
-			}
-			continue
-		}
-
-		// At least one is encoded. To do a semantically correct comparison
-		// we need to unmarshal them first.
-		var desc *ExtensionDesc
-		if m := extensionMaps[base]; m != nil {
-			desc = m[extNum]
-		}
-		if desc == nil {
-			// If both have only encoded form and the bytes are the same,
-			// it is handled above. We get here when the bytes are different.
-			// We don't know how to decode it, so just compare them as byte
-			// slices.
-			log.Printf("proto: don't know how to compare extension %d of %v", extNum, base)
-			return false
-		}
-		var err error
-		if m1 == nil {
-			m1, err = decodeExtension(e1.enc, desc)
-		}
-		if m2 == nil && err == nil {
-			m2, err = decodeExtension(e2.enc, desc)
-		}
-		if err != nil {
-			// The encoded form is invalid.
-			log.Printf("proto: badly encoded extension %d of %v: %v", extNum, base, err)
-			return false
-		}
-		if !equalAny(reflect.ValueOf(m1), reflect.ValueOf(m2), nil) {
-			return false
-		}
-	}
-
-	return true
-}

vendor/github.com/gogo/protobuf/proto/extensions.go

@@ -1,605 +0,0 @@
-// Go support for Protocol Buffers - Google's data interchange format
-//
-// Copyright 2010 The Go Authors.  All rights reserved.
-// https://github.com/golang/protobuf
-//
-// Redistribution and use in source and binary forms, with or without
-// modification, are permitted provided that the following conditions are
-// met:
-//
-//     * Redistributions of source code must retain the above copyright
-// notice, this list of conditions and the following disclaimer.
-//     * Redistributions in binary form must reproduce the above
-// copyright notice, this list of conditions and the following disclaimer
-// in the documentation and/or other materials provided with the
-// distribution.
-//     * Neither the name of Google Inc. nor the names of its
-// contributors may be used to endorse or promote products derived from
-// this software without specific prior written permission.
-//
-// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
-package proto
-
-/*
- * Types and routines for supporting protocol buffer extensions.
- */
-
-import (
-	"errors"
-	"fmt"
-	"io"
-	"reflect"
-	"strconv"
-	"sync"
-)
-
-// ErrMissingExtension is the error returned by GetExtension if the named extension is not in the message.
-var ErrMissingExtension = errors.New("proto: missing extension")
-
-// ExtensionRange represents a range of message extensions for a protocol buffer.
-// Used in code generated by the protocol compiler.
-type ExtensionRange struct {
-	Start, End int32 // both inclusive
-}
-
-// extendableProto is an interface implemented by any protocol buffer generated by the current
-// proto compiler that may be extended.
-type extendableProto interface {
-	Message
-	ExtensionRangeArray() []ExtensionRange
-	extensionsWrite() map[int32]Extension
-	extensionsRead() (map[int32]Extension, sync.Locker)
-}
-
-// extendableProtoV1 is an interface implemented by a protocol buffer generated by the previous
-// version of the proto compiler that may be extended.
-type extendableProtoV1 interface {
-	Message
-	ExtensionRangeArray() []ExtensionRange
-	ExtensionMap() map[int32]Extension
-}
-
-// extensionAdapter is a wrapper around extendableProtoV1 that implements extendableProto.
-type extensionAdapter struct {
-	extendableProtoV1
-}
-
-func (e extensionAdapter) extensionsWrite() map[int32]Extension {
-	return e.ExtensionMap()
-}
-
-func (e extensionAdapter) extensionsRead() (map[int32]Extension, sync.Locker) {
-	return e.ExtensionMap(), notLocker{}
-}
-
-// notLocker is a sync.Locker whose Lock and Unlock methods are nops.
-type notLocker struct{}
-
-func (n notLocker) Lock()   {}
-func (n notLocker) Unlock() {}
-
-// extendable returns the extendableProto interface for the given generated proto message.
-// If the proto message has the old extension format, it returns a wrapper that implements
-// the extendableProto interface.
-func extendable(p interface{}) (extendableProto, error) {
-	switch p := p.(type) {
-	case extendableProto:
-		if isNilPtr(p) {
-			return nil, fmt.Errorf("proto: nil %T is not extendable", p)
-		}
-		return p, nil
-	case extendableProtoV1:
-		if isNilPtr(p) {
-			return nil, fmt.Errorf("proto: nil %T is not extendable", p)
-		}
-		return extensionAdapter{p}, nil
-	case extensionsBytes:
-		return slowExtensionAdapter{p}, nil
-	}
-	// Don't allocate a specific error containing %T:
-	// this is the hot path for Clone and MarshalText.
-	return nil, errNotExtendable
-}
-
-var errNotExtendable = errors.New("proto: not an extendable proto.Message")
-
-func isNilPtr(x interface{}) bool {
-	v := reflect.ValueOf(x)
-	return v.Kind() == reflect.Ptr && v.IsNil()
-}
-
-// XXX_InternalExtensions is an internal representation of proto extensions.
-//
-// Each generated message struct type embeds an anonymous XXX_InternalExtensions field,
-// thus gaining the unexported 'extensions' method, which can be called only from the proto package.
-//
-// The methods of XXX_InternalExtensions are not concurrency safe in general,
-// but calls to logically read-only methods such as has and get may be executed concurrently.
-type XXX_InternalExtensions struct {
-	// The struct must be indirect so that if a user inadvertently copies a
-	// generated message and its embedded XXX_InternalExtensions, they
-	// avoid the mayhem of a copied mutex.
-	//
-	// The mutex serializes all logically read-only operations to p.extensionMap.
-	// It is up to the client to ensure that write operations to p.extensionMap are
-	// mutually exclusive with other accesses.
-	p *struct {
-		mu           sync.Mutex
-		extensionMap map[int32]Extension
-	}
-}
-
-// extensionsWrite returns the extension map, creating it on first use.
-func (e *XXX_InternalExtensions) extensionsWrite() map[int32]Extension {
-	if e.p == nil {
-		e.p = new(struct {
-			mu           sync.Mutex
-			extensionMap map[int32]Extension
-		})
-		e.p.extensionMap = make(map[int32]Extension)
-	}
-	return e.p.extensionMap
-}
-
-// extensionsRead returns the extensions map for read-only use.  It may be nil.
-// The caller must hold the returned mutex's lock when accessing Elements within the map.
-func (e *XXX_InternalExtensions) extensionsRead() (map[int32]Extension, sync.Locker) {
-	if e.p == nil {
-		return nil, nil
-	}
-	return e.p.extensionMap, &e.p.mu
-}
-
-// ExtensionDesc represents an extension specification.
-// Used in generated code from the protocol compiler.
-type ExtensionDesc struct {
-	ExtendedType  Message     // nil pointer to the type that is being extended
-	ExtensionType interface{} // nil pointer to the extension type
-	Field         int32       // field number
-	Name          string      // fully-qualified name of extension, for text formatting
-	Tag           string      // protobuf tag style
-	Filename      string      // name of the file in which the extension is defined
-}
-
-func (ed *ExtensionDesc) repeated() bool {
-	t := reflect.TypeOf(ed.ExtensionType)
-	return t.Kind() == reflect.Slice && t.Elem().Kind() != reflect.Uint8
-}
-
-// Extension represents an extension in a message.
-type Extension struct {
-	// When an extension is stored in a message using SetExtension
-	// only desc and value are set. When the message is marshaled
-	// enc will be set to the encoded form of the message.
-	//
-	// When a message is unmarshaled and contains extensions, each
-	// extension will have only enc set. When such an extension is
-	// accessed using GetExtension (or GetExtensions) desc and value
-	// will be set.
-	desc  *ExtensionDesc
-	value interface{}
-	enc   []byte
-}
-
-// SetRawExtension is for testing only.
-func SetRawExtension(base Message, id int32, b []byte) {
-	if ebase, ok := base.(extensionsBytes); ok {
-		clearExtension(base, id)
-		ext := ebase.GetExtensions()
-		*ext = append(*ext, b...)
-		return
-	}
-	epb, err := extendable(base)
-	if err != nil {
-		return
-	}
-	extmap := epb.extensionsWrite()
-	extmap[id] = Extension{enc: b}
-}
-
-// isExtensionField returns true iff the given field number is in an extension range.
-func isExtensionField(pb extendableProto, field int32) bool {
-	for _, er := range pb.ExtensionRangeArray() {
-		if er.Start <= field && field <= er.End {
-			return true
-		}
-	}
-	return false
-}
-
-// checkExtensionTypes checks that the given extension is valid for pb.
-func checkExtensionTypes(pb extendableProto, extension *ExtensionDesc) error {
-	var pbi interface{} = pb
-	// Check the extended type.
-	if ea, ok := pbi.(extensionAdapter); ok {
-		pbi = ea.extendableProtoV1
-	}
-	if ea, ok := pbi.(slowExtensionAdapter); ok {
-		pbi = ea.extensionsBytes
-	}
-	if a, b := reflect.TypeOf(pbi), reflect.TypeOf(extension.ExtendedType); a != b {
-		return fmt.Errorf("proto: bad extended type; %v does not extend %v", b, a)
-	}
-	// Check the range.
-	if !isExtensionField(pb, extension.Field) {
-		return errors.New("proto: bad extension number; not in declared ranges")
-	}
-	return nil
-}
-
-// extPropKey is sufficient to uniquely identify an extension.
-type extPropKey struct {
-	base  reflect.Type
-	field int32
-}
-
-var extProp = struct {
-	sync.RWMutex
-	m map[extPropKey]*Properties
-}{
-	m: make(map[extPropKey]*Properties),
-}
-
-func extensionProperties(ed *ExtensionDesc) *Properties {
-	key := extPropKey{base: reflect.TypeOf(ed.ExtendedType), field: ed.Field}
-
-	extProp.RLock()
-	if prop, ok := extProp.m[key]; ok {
-		extProp.RUnlock()
-		return prop
-	}
-	extProp.RUnlock()
-
-	extProp.Lock()
-	defer extProp.Unlock()
-	// Check again.
-	if prop, ok := extProp.m[key]; ok {
-		return prop
-	}
-
-	prop := new(Properties)
-	prop.Init(reflect.TypeOf(ed.ExtensionType), "unknown_name", ed.Tag, nil)
-	extProp.m[key] = prop
-	return prop
-}
-
-// HasExtension returns whether the given extension is present in pb.
-func HasExtension(pb Message, extension *ExtensionDesc) bool {
-	if epb, doki := pb.(extensionsBytes); doki {
-		ext := epb.GetExtensions()
-		buf := *ext
-		o := 0
-		for o < len(buf) {
-			tag, n := DecodeVarint(buf[o:])
-			fieldNum := int32(tag >> 3)
-			if int32(fieldNum) == extension.Field {
-				return true
-			}
-			wireType := int(tag & 0x7)
-			o += n
-			l, err := size(buf[o:], wireType)
-			if err != nil {
-				return false
-			}
-			o += l
-		}
-		return false
-	}
-	// TODO: Check types, field numbers, etc.?
-	epb, err := extendable(pb)
-	if err != nil {
-		return false
-	}
-	extmap, mu := epb.extensionsRead()
-	if extmap == nil {
-		return false
-	}
-	mu.Lock()
-	_, ok := extmap[extension.Field]
-	mu.Unlock()
-	return ok
-}
-
-// ClearExtension removes the given extension from pb.
-func ClearExtension(pb Message, extension *ExtensionDesc) {
-	clearExtension(pb, extension.Field)
-}
-
-func clearExtension(pb Message, fieldNum int32) {
-	if epb, ok := pb.(extensionsBytes); ok {
-		offset := 0
-		for offset != -1 {
-			offset = deleteExtension(epb, fieldNum, offset)
-		}
-		return
-	}
-	epb, err := extendable(pb)
-	if err != nil {
-		return
-	}
-	// TODO: Check types, field numbers, etc.?
-	extmap := epb.extensionsWrite()
-	delete(extmap, fieldNum)
-}
-
-// GetExtension retrieves a proto2 extended field from pb.
-//
-// If the descriptor is type complete (i.e., ExtensionDesc.ExtensionType is non-nil),
-// then GetExtension parses the encoded field and returns a Go value of the specified type.
-// If the field is not present, then the default value is returned (if one is specified),
-// otherwise ErrMissingExtension is reported.
-//
-// If the descriptor is not type complete (i.e., ExtensionDesc.ExtensionType is nil),
-// then GetExtension returns the raw encoded bytes of the field extension.
-func GetExtension(pb Message, extension *ExtensionDesc) (interface{}, error) {
-	if epb, doki := pb.(extensionsBytes); doki {
-		ext := epb.GetExtensions()
-		return decodeExtensionFromBytes(extension, *ext)
-	}
-
-	epb, err := extendable(pb)
-	if err != nil {
-		return nil, err
-	}
-
-	if extension.ExtendedType != nil {
-		// can only check type if this is a complete descriptor
-		if cerr := checkExtensionTypes(epb, extension); cerr != nil {
-			return nil, cerr
-		}
-	}
-
-	emap, mu := epb.extensionsRead()
-	if emap == nil {
-		return defaultExtensionValue(extension)
-	}
-	mu.Lock()
-	defer mu.Unlock()
-	e, ok := emap[extension.Field]
-	if !ok {
-		// defaultExtensionValue returns the default value or
-		// ErrMissingExtension if there is no default.
-		return defaultExtensionValue(extension)
-	}
-
-	if e.value != nil {
-		// Already decoded. Check the descriptor, though.
-		if e.desc != extension {
-			// This shouldn't happen. If it does, it means that
-			// GetExtension was called twice with two different
-			// descriptors with the same field number.
-			return nil, errors.New("proto: descriptor conflict")
-		}
-		return e.value, nil
-	}
-
-	if extension.ExtensionType == nil {
-		// incomplete descriptor
-		return e.enc, nil
-	}
-
-	v, err := decodeExtension(e.enc, extension)
-	if err != nil {
-		return nil, err
-	}
-
-	// Remember the decoded version and drop the encoded version.
-	// That way it is safe to mutate what we return.
-	e.value = v
-	e.desc = extension
-	e.enc = nil
-	emap[extension.Field] = e
-	return e.value, nil
-}
-
-// defaultExtensionValue returns the default value for extension.
-// If no default for an extension is defined ErrMissingExtension is returned.
-func defaultExtensionValue(extension *ExtensionDesc) (interface{}, error) {
-	if extension.ExtensionType == nil {
-		// incomplete descriptor, so no default
-		return nil, ErrMissingExtension
-	}
-
-	t := reflect.TypeOf(extension.ExtensionType)
-	props := extensionProperties(extension)
-
-	sf, _, err := fieldDefault(t, props)
-	if err != nil {
-		return nil, err
-	}
-
-	if sf == nil || sf.value == nil {
-		// There is no default value.
-		return nil, ErrMissingExtension
-	}
-
-	if t.Kind() != reflect.Ptr {
-		// We do not need to return a Ptr, we can directly return sf.value.
-		return sf.value, nil
-	}
-
-	// We need to return an interface{} that is a pointer to sf.value.
-	value := reflect.New(t).Elem()
-	value.Set(reflect.New(value.Type().Elem()))
-	if sf.kind == reflect.Int32 {
-		// We may have an int32 or an enum, but the underlying data is int32.
-		// Since we can't set an int32 into a non int32 reflect.value directly
-		// set it as a int32.
-		value.Elem().SetInt(int64(sf.value.(int32)))
-	} else {
-		value.Elem().Set(reflect.ValueOf(sf.value))
-	}
-	return value.Interface(), nil
-}
-
-// decodeExtension decodes an extension encoded in b.
-func decodeExtension(b []byte, extension *ExtensionDesc) (interface{}, error) {
-	t := reflect.TypeOf(extension.ExtensionType)
-	unmarshal := typeUnmarshaler(t, extension.Tag)
-
-	// t is a pointer to a struct, pointer to basic type or a slice.
-	// Allocate space to store the pointer/slice.
-	value := reflect.New(t).Elem()
-
-	var err error
-	for {
-		x, n := decodeVarint(b)
-		if n == 0 {
-			return nil, io.ErrUnexpectedEOF
-		}
-		b = b[n:]
-		wire := int(x) & 7
-
-		b, err = unmarshal(b, valToPointer(value.Addr()), wire)
-		if err != nil {
-			return nil, err
-		}
-
-		if len(b) == 0 {
-			break
-		}
-	}
-	return value.Interface(), nil
-}
-
-// GetExtensions returns a slice of the extensions present in pb that are also listed in es.
-// The returned slice has the same length as es; missing extensions will appear as nil elements.
-func GetExtensions(pb Message, es []*ExtensionDesc) (extensions []interface{}, err error) {
-	epb, err := extendable(pb)
-	if err != nil {
-		return nil, err
-	}
-	extensions = make([]interface{}, len(es))
-	for i, e := range es {
-		extensions[i], err = GetExtension(epb, e)
-		if err == ErrMissingExtension {
-			err = nil
-		}
-		if err != nil {
-			return
-		}
-	}
-	return
-}
-
-// ExtensionDescs returns a new slice containing pb's extension descriptors, in undefined order.
-// For non-registered extensions, ExtensionDescs returns an incomplete descriptor containing
-// just the Field field, which defines the extension's field number.
-func ExtensionDescs(pb Message) ([]*ExtensionDesc, error) {
-	epb, err := extendable(pb)
-	if err != nil {
-		return nil, err
-	}
-	registeredExtensions := RegisteredExtensions(pb)
-
-	emap, mu := epb.extensionsRead()
-	if emap == nil {
-		return nil, nil
-	}
-	mu.Lock()
-	defer mu.Unlock()
-	extensions := make([]*ExtensionDesc, 0, len(emap))
-	for extid, e := range emap {
-		desc := e.desc
-		if desc == nil {
-			desc = registeredExtensions[extid]
-			if desc == nil {
-				desc = &ExtensionDesc{Field: extid}
-			}
-		}
-
-		extensions = append(extensions, desc)
-	}
-	return extensions, nil
-}
-
-// SetExtension sets the specified extension of pb to the specified value.
-func SetExtension(pb Message, extension *ExtensionDesc, value interface{}) error {
-	if epb, ok := pb.(extensionsBytes); ok {
-		ClearExtension(pb, extension)
-		newb, err := encodeExtension(extension, value)
-		if err != nil {
-			return err
-		}
-		bb := epb.GetExtensions()
-		*bb = append(*bb, newb...)
-		return nil
-	}
-	epb, err := extendable(pb)
-	if err != nil {
-		return err
-	}
-	if err := checkExtensionTypes(epb, extension); err != nil {
-		return err
-	}
-	typ := reflect.TypeOf(extension.ExtensionType)
-	if typ != reflect.TypeOf(value) {
-		return fmt.Errorf("proto: bad extension value type. got: %T, want: %T", value, extension.ExtensionType)
-	}
-	// nil extension values need to be caught early, because the
-	// encoder can't distinguish an ErrNil due to a nil extension
-	// from an ErrNil due to a missing field. Extensions are
-	// always optional, so the encoder would just swallow the error
-	// and drop all the extensions from the encoded message.
-	if reflect.ValueOf(value).IsNil() {
-		return fmt.Errorf("proto: SetExtension called with nil value of type %T", value)
-	}
-
-	extmap := epb.extensionsWrite()
-	extmap[extension.Field] = Extension{desc: extension, value: value}
-	return nil
-}
-
-// ClearAllExtensions clears all extensions from pb.
-func ClearAllExtensions(pb Message) {
-	if epb, doki := pb.(extensionsBytes); doki {
-		ext := epb.GetExtensions()
-		*ext = []byte{}
-		return
-	}
-	epb, err := extendable(pb)
-	if err != nil {
-		return
-	}
-	m := epb.extensionsWrite()
-	for k := range m {
-		delete(m, k)
-	}
-}
-
-// A global registry of extensions.
-// The generated code will register the generated descriptors by calling RegisterExtension.
-
-var extensionMaps = make(map[reflect.Type]map[int32]*ExtensionDesc)
-
-// RegisterExtension is called from the generated code.
-func RegisterExtension(desc *ExtensionDesc) {
-	st := reflect.TypeOf(desc.ExtendedType).Elem()
-	m := extensionMaps[st]
-	if m == nil {
-		m = make(map[int32]*ExtensionDesc)
-		extensionMaps[st] = m
-	}
-	if _, ok := m[desc.Field]; ok {
-		panic("proto: duplicate extension registered: " + st.String() + " " + strconv.Itoa(int(desc.Field)))
-	}
-	m[desc.Field] = desc
-}
-
-// RegisteredExtensions returns a map of the registered extensions of a
-// protocol buffer struct, indexed by the extension number.
-// The argument pb should be a nil pointer to the struct type.
-func RegisteredExtensions(pb Message) map[int32]*ExtensionDesc {
-	return extensionMaps[reflect.TypeOf(pb).Elem()]
-}