mirror of
https://github.com/NVIDIA/nvidia-container-toolkit
synced 2024-11-22 16:29:18 +00:00
75 lines
2.3 KiB
Go
75 lines
2.3 KiB
Go
/**
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# Copyright (c) 2022, 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 discover
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import (
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"github.com/NVIDIA/nvidia-container-toolkit/internal/lookup"
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"github.com/container-orchestrated-devices/container-device-interface/pkg/cdi"
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"github.com/sirupsen/logrus"
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)
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type legacy struct {
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None
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logger *logrus.Logger
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lookup lookup.Locator
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}
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const (
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nvidiaContainerRuntimeHookExecutable = "nvidia-container-runtime-hook"
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hookDefaultFilePath = "/usr/bin/nvidia-container-runtime-hook"
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)
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var _ Discover = (*legacy)(nil)
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// NewLegacyDiscoverer creates a discoverer for the legacy runtime
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func NewLegacyDiscoverer(logger *logrus.Logger, root string) (Discover, error) {
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d := legacy{
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logger: logger,
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lookup: lookup.NewExecutableLocator(logger, root),
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}
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return &d, nil
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}
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// Hooks returns the "legacy" NVIDIA Container Runtime hook. This hook calls out
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// to the nvidia-container-cli to make modifications to the container as defined
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// in libnvidia-container.
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func (d legacy) Hooks() ([]Hook, error) {
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var hooks []Hook
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hookPath := hookDefaultFilePath
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targets, err := d.lookup.Locate(nvidiaContainerRuntimeHookExecutable)
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if err != nil {
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d.logger.Warnf("Failed to locate %v: %v", nvidiaContainerRuntimeHookExecutable, err)
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} else if len(targets) == 0 {
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d.logger.Warnf("%v not found", nvidiaContainerRuntimeHookExecutable)
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} else {
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d.logger.Debugf("Found %v candidates: %v", nvidiaContainerRuntimeHookExecutable, targets)
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hookPath = targets[0]
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}
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d.logger.Debugf("Using NVIDIA Container Runtime Hook path %v", hookPath)
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args := []string{hookPath, "prestart"}
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legacyHook := Hook{
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Lifecycle: cdi.PrestartHook,
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Path: hookPath,
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Args: args,
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}
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hooks = append(hooks, legacyHook)
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return hooks, nil
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}
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