mirror of
https://github.com/NVIDIA/nvidia-container-toolkit
synced 2024-11-24 04:54:00 +00:00
179d8655f9
This change creates an nvidia-cdi-hook binary for implementing CDI hooks. This allows for these hooks to be separated from the nvidia-ctk command which may, for example, require libnvidia-ml to support other functionality. The nvidia-ctk hook subcommand is maintained as an alias for the time being to allow for existing CDI specifications referring to this path to work as expected. Signed-off-by: Avi Deitcher <avi@deitcher.net>
343 lines
8.8 KiB
Go
343 lines
8.8 KiB
Go
/**
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# Copyright (c) NVIDIA CORPORATION. All rights reserved.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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**/
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package root
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import (
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"testing"
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"github.com/stretchr/testify/require"
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"tags.cncf.io/container-device-interface/specs-go"
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)
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func TestContainerRootTransformer(t *testing.T) {
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testCases := []struct {
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description string
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root string
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targetRoot string
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spec *specs.Spec
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expectedSpec *specs.Spec
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}{
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{
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description: "nil spec",
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root: "/root",
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targetRoot: "/target-root",
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spec: nil,
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expectedSpec: nil,
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},
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{
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description: "empty spec",
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root: "/root",
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targetRoot: "/target-root",
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spec: &specs.Spec{},
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expectedSpec: &specs.Spec{},
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},
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{
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description: "device nodes",
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root: "/root",
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targetRoot: "/target-root",
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spec: &specs.Spec{
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ContainerEdits: specs.ContainerEdits{
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DeviceNodes: []*specs.DeviceNode{
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{HostPath: "/root/dev/nvidia0", Path: "/root/dev/nvidia0"},
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{HostPath: "/target-root/dev/nvidia1", Path: "/target-root/dev/nvidia1"},
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{HostPath: "/different-root/dev/nvidia2", Path: "/different-root/dev/nvidia2"},
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},
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},
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},
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expectedSpec: &specs.Spec{
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ContainerEdits: specs.ContainerEdits{
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DeviceNodes: []*specs.DeviceNode{
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{HostPath: "/root/dev/nvidia0", Path: "/target-root/dev/nvidia0"},
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{HostPath: "/target-root/dev/nvidia1", Path: "/target-root/dev/nvidia1"},
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{HostPath: "/different-root/dev/nvidia2", Path: "/different-root/dev/nvidia2"},
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},
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},
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},
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},
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{
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description: "mounts",
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root: "/root",
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targetRoot: "/target-root",
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spec: &specs.Spec{
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ContainerEdits: specs.ContainerEdits{
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Mounts: []*specs.Mount{
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{HostPath: "/root/lib/lib1.so", ContainerPath: "/root/lib/lib1.so"},
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{HostPath: "/target-root/lib/lib2.so", ContainerPath: "/target-root/lib/lib2.so"},
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{HostPath: "/different-root/lib/lib3.so", ContainerPath: "/different-root/lib/lib3.so"},
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},
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},
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},
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expectedSpec: &specs.Spec{
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ContainerEdits: specs.ContainerEdits{
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Mounts: []*specs.Mount{
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{HostPath: "/root/lib/lib1.so", ContainerPath: "/target-root/lib/lib1.so"},
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{HostPath: "/target-root/lib/lib2.so", ContainerPath: "/target-root/lib/lib2.so"},
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{HostPath: "/different-root/lib/lib3.so", ContainerPath: "/different-root/lib/lib3.so"},
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},
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},
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},
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},
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{
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description: "hooks",
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root: "/root",
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targetRoot: "/target-root",
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spec: &specs.Spec{
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ContainerEdits: specs.ContainerEdits{
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Hooks: []*specs.Hook{
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{
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HookName: "createContainer",
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Path: "/root/usr/bin/nvidia-ctk",
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Args: []string{
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"--link",
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"/root/path/to/target::/root/path/to/link",
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},
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},
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{
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HookName: "createContainer",
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Path: "/target-root/usr/bin/nvidia-ctk",
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Args: []string{
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"--link",
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"/target-root/path/to/target::/target-root/path/to/link",
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},
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},
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{
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HookName: "createContainer",
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Path: "/different-root/usr/bin/nvidia-ctk",
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Args: []string{
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"--link",
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"/different-root/path/to/target::/different-root/path/to/link",
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},
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},
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},
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},
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},
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expectedSpec: &specs.Spec{
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ContainerEdits: specs.ContainerEdits{
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Hooks: []*specs.Hook{
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{
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HookName: "createContainer",
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Path: "/root/usr/bin/nvidia-ctk",
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Args: []string{
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"--link",
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"/target-root/path/to/target::/target-root/path/to/link",
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},
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},
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{
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HookName: "createContainer",
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Path: "/target-root/usr/bin/nvidia-ctk",
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Args: []string{
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"--link",
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"/target-root/path/to/target::/target-root/path/to/link",
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},
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},
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{
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HookName: "createContainer",
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Path: "/different-root/usr/bin/nvidia-ctk",
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Args: []string{
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"--link",
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"/different-root/path/to/target::/different-root/path/to/link",
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},
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},
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},
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},
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},
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},
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{
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description: "update ldcache hooks",
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root: "/root",
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targetRoot: "/target-root",
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spec: &specs.Spec{
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ContainerEdits: specs.ContainerEdits{
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Hooks: []*specs.Hook{
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{
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HookName: "createContainer",
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Path: "/root/usr/bin/nvidia-cdi-hook",
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Args: []string{
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"nvidia-cdi-hook", "update-ldcache",
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"--folder",
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"/root/path/to/target",
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},
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},
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{
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HookName: "createContainer",
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Path: "/target-root/usr/bin/nvidia-cdi-hook",
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Args: []string{
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"nvidia-cdi-hook", "update-ldcache",
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"--folder",
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"/target-root/path/to/target",
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},
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},
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{
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HookName: "createContainer",
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Path: "/different-root/usr/bin/nvidia-cdi-hook",
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Args: []string{
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"nvidia-cdi-hook", "update-ldcache",
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"--folder",
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"/different-root/path/to/target",
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},
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},
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},
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},
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},
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expectedSpec: &specs.Spec{
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ContainerEdits: specs.ContainerEdits{
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Hooks: []*specs.Hook{
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{
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HookName: "createContainer",
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Path: "/root/usr/bin/nvidia-cdi-hook",
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Args: []string{
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"nvidia-cdi-hook", "update-ldcache",
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"--folder",
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"/target-root/path/to/target",
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},
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},
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{
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HookName: "createContainer",
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Path: "/target-root/usr/bin/nvidia-cdi-hook",
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Args: []string{
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"nvidia-cdi-hook", "update-ldcache",
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"--folder",
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"/target-root/path/to/target",
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},
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},
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{
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HookName: "createContainer",
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Path: "/different-root/usr/bin/nvidia-cdi-hook",
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Args: []string{
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"nvidia-cdi-hook", "update-ldcache",
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"--folder",
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"/different-root/path/to/target",
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},
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},
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},
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},
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},
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},
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{
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description: "startContainer hook updates path and arguments",
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root: "/root",
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targetRoot: "/target-root",
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spec: &specs.Spec{
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ContainerEdits: specs.ContainerEdits{
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Hooks: []*specs.Hook{
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{
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HookName: "startContainer",
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Path: "/root/usr/bin/nvidia-cdi-hook",
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Args: []string{
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"--link",
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"/root/path/to/target::/root/path/to/link",
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},
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},
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},
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},
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},
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expectedSpec: &specs.Spec{
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ContainerEdits: specs.ContainerEdits{
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Hooks: []*specs.Hook{
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{
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HookName: "startContainer",
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Path: "/target-root/usr/bin/nvidia-cdi-hook",
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Args: []string{
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"--link",
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"/target-root/path/to/target::/target-root/path/to/link",
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},
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},
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},
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},
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},
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},
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{
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description: "createContainer hook skips path but updates arguments",
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root: "/root",
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targetRoot: "/target-root",
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spec: &specs.Spec{
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ContainerEdits: specs.ContainerEdits{
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Hooks: []*specs.Hook{
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{
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HookName: "createContainer",
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Path: "/root/usr/bin/nvidia-cdi-hook",
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Args: []string{
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"--link",
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"/root/path/to/target::/root/path/to/link",
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},
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},
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},
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},
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},
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expectedSpec: &specs.Spec{
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ContainerEdits: specs.ContainerEdits{
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Hooks: []*specs.Hook{
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{
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HookName: "createContainer",
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Path: "/root/usr/bin/nvidia-cdi-hook",
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Args: []string{
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"--link",
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"/target-root/path/to/target::/target-root/path/to/link",
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},
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},
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},
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},
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},
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},
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{
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description: "createRuntime hook skips path and arguments",
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root: "/root",
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targetRoot: "/target-root",
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spec: &specs.Spec{
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ContainerEdits: specs.ContainerEdits{
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Hooks: []*specs.Hook{
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{
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HookName: "createRuntime",
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Path: "/root/usr/bin/nvidia-cdi-hook",
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Args: []string{
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"--link",
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"/root/path/to/target::/root/path/to/link",
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},
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},
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},
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},
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},
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expectedSpec: &specs.Spec{
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ContainerEdits: specs.ContainerEdits{
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Hooks: []*specs.Hook{
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{
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HookName: "createRuntime",
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Path: "/root/usr/bin/nvidia-cdi-hook",
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Args: []string{
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"--link",
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"/root/path/to/target::/root/path/to/link",
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},
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},
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},
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},
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},
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},
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}
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for _, tc := range testCases {
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t.Run(tc.description, func(t *testing.T) {
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err := New(
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WithRoot(tc.root),
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WithTargetRoot(tc.targetRoot),
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WithRelativeTo("container"),
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).Transform(tc.spec)
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require.NoError(t, err)
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require.Equal(t, tc.spec, tc.expectedSpec)
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})
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}
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}
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