Use oci package from experimental branch for nvidia-container-runtime

Signed-off-by: Evan Lezar <elezar@nvidia.com>

cmd/nvidia-container-runtime/nvcr.go

@@ -22,7 +22,7 @@ import (
 	"os/exec"
 	"strings"
 
-	"github.com/NVIDIA/nvidia-container-toolkit/internal/oci"
+	"github.com/NVIDIA/nvidia-container-toolkit/pkg/oci"
 	"github.com/opencontainers/runtime-spec/specs-go"
 	log "github.com/sirupsen/logrus"
 )

cmd/nvidia-container-runtime/nvcr_test.go

@@ -22,7 +22,7 @@ import (
 	"strings"
 	"testing"
 
-	"github.com/NVIDIA/nvidia-container-toolkit/internal/oci"
+	"github.com/NVIDIA/nvidia-container-toolkit/pkg/oci"
 	"github.com/opencontainers/runtime-spec/specs-go"
 	testlog "github.com/sirupsen/logrus/hooks/test"
 	"github.com/stretchr/testify/require"
@@ -185,9 +185,14 @@ func TestNvidiaContainerRuntime(t *testing.T) {
 		tc.shim.logger = logger
 		hook.Reset()
 
-		spec := &specs.Spec{}
-		ociMock := oci.NewMockSpec(spec, tc.writeError, tc.modifyError)
-
+		ociMock := &oci.SpecMock{
+			ModifyFunc: func(specModifier oci.SpecModifier) error {
+				return tc.modifyError
+			},
+			FlushFunc: func() error {
+				return tc.writeError
+			},
+		}
 		require.Equal(t, tc.shouldModify, tc.shim.modificationRequired(tc.args), "%d: %v", i, tc)
 
 		tc.shim.ociSpec = ociMock
@@ -201,18 +206,16 @@ func TestNvidiaContainerRuntime(t *testing.T) {
 		}
 
 		if tc.shouldModify {
-			require.Equal(t, 1, ociMock.MockModify.Callcount, "%d: %v", i, tc)
-			require.Equal(t, 1, nvidiaHookCount(spec.Hooks), "%d: %v", i, tc)
+			require.Equal(t, 1, len(ociMock.ModifyCalls()), "%d: %v", i, tc)
 		} else {
-			require.Equal(t, 0, ociMock.MockModify.Callcount, "%d: %v", i, tc)
-			require.Nil(t, spec.Hooks, "%d: %v", i, tc)
+			require.Equal(t, 0, len(ociMock.ModifyCalls()), "%d: %v", i, tc)
 		}
 
 		writeExpected := tc.shouldModify && tc.modifyError == nil
 		if writeExpected {
-			require.Equal(t, 1, ociMock.MockFlush.Callcount, "%d: %v", i, tc)
+			require.Equal(t, 1, len(ociMock.FlushCalls()), "%d: %v", i, tc)
 		} else {
-			require.Equal(t, 0, ociMock.MockFlush.Callcount, "%d: %v", i, tc)
+			require.Equal(t, 0, len(ociMock.FlushCalls()), "%d: %v", i, tc)
 		}
 	}
 }

cmd/nvidia-container-runtime/runtime_factory.go

@@ -19,11 +19,10 @@ package main
 import (
 	"fmt"
 	"os"
-	"os/exec"
 	"path/filepath"
 	"strings"
 
-	"github.com/NVIDIA/nvidia-container-toolkit/internal/oci"
+	"github.com/NVIDIA/nvidia-container-toolkit/pkg/oci"
 )
 
 const (
@@ -70,17 +69,11 @@ func newOCISpec(argv []string) (oci.Spec, error) {
 
 // newRuncRuntime locates the runc binary and wraps it in a SyscallExecRuntime
 func newRuncRuntime() (oci.Runtime, error) {
-	runtimePath, err := findRunc()
-	if err != nil {
-		return nil, fmt.Errorf("error locating runtime: %v", err)
-	}
-
-	runc, err := oci.NewSyscallExecRuntimeWithLogger(logger.Logger, runtimePath)
-	if err != nil {
-		return nil, fmt.Errorf("error constructing runtime: %v", err)
-	}
-
-	return runc, nil
+	return oci.NewLowLevelRuntimeWithLogger(
+		logger.Logger,
+		dockerRuncExecutableName,
+		runcExecutableName,
+	)
 }
 
 // getBundlePath checks the specified slice of strings (argv) for a 'bundle' flag as allowed by runc.
@@ -120,31 +113,6 @@ func getBundlePath(argv []string) (string, error) {
 	return bundlePath, nil
 }
 
-// findRunc locates runc in the path, returning the full path to the
-// binary or an error.
-func findRunc() (string, error) {
-	runtimeCandidates := []string{
-		dockerRuncExecutableName,
-		runcExecutableName,
-	}
-
-	return findRuntime(runtimeCandidates)
-}
-
-func findRuntime(runtimeCandidates []string) (string, error) {
-	for _, candidate := range runtimeCandidates {
-		logger.Infof("Looking for runtime binary '%v'", candidate)
-		runcPath, err := exec.LookPath(candidate)
-		if err == nil {
-			logger.Infof("Found runtime binary '%v'", runcPath)
-			return runcPath, nil
-		}
-		logger.Warnf("Runtime binary '%v' not found: %v", candidate, err)
-	}
-
-	return "", fmt.Errorf("no runtime binary found from candidate list: %v", runtimeCandidates)
-}
-
 func isBundleFlag(arg string) bool {
 	if !strings.HasPrefix(arg, "-") {
 		return false

cmd/nvidia-container-runtime/runtime_factory_test.go

@@ -17,10 +17,8 @@
 package main
 
 import (
-	"path/filepath"
 	"testing"
 
-	testlog "github.com/sirupsen/logrus/hooks/test"
 	"github.com/stretchr/testify/require"
 )
 
@@ -138,55 +136,3 @@ func TestGetBundlePath(t *testing.T) {
 		require.Equalf(t, tc.expected.bundle, bundle, "%d: %v", i, tc)
 	}
 }
-
-func TestFindRunc(t *testing.T) {
-	testLogger, _ := testlog.NewNullLogger()
-	logger.Logger = testLogger
-
-	runcPath, err := findRunc()
-	require.NoError(t, err)
-	require.Equal(t, filepath.Join(cfg.binPath, runcExecutableName), runcPath)
-}
-
-func TestFindRuntime(t *testing.T) {
-	testLogger, _ := testlog.NewNullLogger()
-	logger.Logger = testLogger
-
-	testCases := []struct {
-		candidates   []string
-		expectedPath string
-	}{
-		{
-			candidates: []string{},
-		},
-		{
-			candidates: []string{"not-runc"},
-		},
-		{
-			candidates: []string{"not-runc", "also-not-runc"},
-		},
-		{
-			candidates:   []string{runcExecutableName},
-			expectedPath: filepath.Join(cfg.binPath, runcExecutableName),
-		},
-		{
-			candidates:   []string{runcExecutableName, "not-runc"},
-			expectedPath: filepath.Join(cfg.binPath, runcExecutableName),
-		},
-		{
-			candidates:   []string{"not-runc", runcExecutableName},
-			expectedPath: filepath.Join(cfg.binPath, runcExecutableName),
-		},
-	}
-
-	for i, tc := range testCases {
-		runcPath, err := findRuntime(tc.candidates)
-		if tc.expectedPath == "" {
-			require.Error(t, err, "%d: %v", i, tc)
-		} else {
-			require.NoError(t, err, "%d: %v", i, tc)
-		}
-		require.Equal(t, tc.expectedPath, runcPath, "%d: %v", i, tc)
-	}
-
-}