mirror of
https://github.com/NVIDIA/nvidia-container-toolkit
synced 2024-11-27 06:19:34 +00:00
115 lines
3.6 KiB
Go
115 lines
3.6 KiB
Go
/*
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# Copyright (c) 2021-2022, 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 runtime
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import (
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"fmt"
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"github.com/NVIDIA/nvidia-container-toolkit/internal/config"
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"github.com/NVIDIA/nvidia-container-toolkit/internal/config/image"
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"github.com/NVIDIA/nvidia-container-toolkit/internal/info"
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"github.com/NVIDIA/nvidia-container-toolkit/internal/logger"
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"github.com/NVIDIA/nvidia-container-toolkit/internal/modifier"
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"github.com/NVIDIA/nvidia-container-toolkit/internal/oci"
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)
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// newNVIDIAContainerRuntime is a factory method that constructs a runtime based on the selected configuration and specified logger
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func newNVIDIAContainerRuntime(logger logger.Interface, cfg *config.Config, argv []string) (oci.Runtime, error) {
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lowLevelRuntime, err := oci.NewLowLevelRuntime(logger, cfg.NVIDIAContainerRuntimeConfig.Runtimes)
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if err != nil {
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return nil, fmt.Errorf("error constructing low-level runtime: %v", err)
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}
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if !oci.HasCreateSubcommand(argv) {
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logger.Debugf("Skipping modifier for non-create subcommand")
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return lowLevelRuntime, nil
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}
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ociSpec, err := oci.NewSpec(logger, argv)
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if err != nil {
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return nil, fmt.Errorf("error constructing OCI specification: %v", err)
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}
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specModifier, err := newSpecModifier(logger, cfg, ociSpec)
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if err != nil {
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return nil, fmt.Errorf("failed to construct OCI spec modifier: %v", err)
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}
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// Create the wrapping runtime with the specified modifier
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r := oci.NewModifyingRuntimeWrapper(
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logger,
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lowLevelRuntime,
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ociSpec,
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specModifier,
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)
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return r, nil
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}
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// newSpecModifier is a factory method that creates constructs an OCI spec modifer based on the provided config.
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func newSpecModifier(logger logger.Interface, cfg *config.Config, ociSpec oci.Spec) (oci.SpecModifier, error) {
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rawSpec, err := ociSpec.Load()
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if err != nil {
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return nil, fmt.Errorf("failed to load OCI spec: %v", err)
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}
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image, err := image.NewCUDAImageFromSpec(rawSpec)
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if err != nil {
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return nil, err
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}
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mode := info.ResolveAutoMode(logger, cfg.NVIDIAContainerRuntimeConfig.Mode, image)
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modeModifier, err := newModeModifier(logger, mode, cfg, ociSpec, image)
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if err != nil {
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return nil, err
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}
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// For CDI mode we make no additional modifications.
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if mode == "cdi" {
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return modeModifier, nil
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}
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graphicsModifier, err := modifier.NewGraphicsModifier(logger, cfg, image)
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if err != nil {
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return nil, err
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}
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featureModifier, err := modifier.NewFeatureGatedModifier(logger, cfg, image)
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if err != nil {
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return nil, err
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}
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modifiers := modifier.Merge(
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modeModifier,
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graphicsModifier,
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featureModifier,
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)
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return modifiers, nil
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}
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func newModeModifier(logger logger.Interface, mode string, cfg *config.Config, ociSpec oci.Spec, image image.CUDA) (oci.SpecModifier, error) {
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switch mode {
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case "legacy":
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return modifier.NewStableRuntimeModifier(logger, cfg.NVIDIAContainerRuntimeHookConfig.Path), nil
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case "csv":
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return modifier.NewCSVModifier(logger, cfg, image)
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case "cdi":
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return modifier.NewCDIModifier(logger, cfg, ociSpec)
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}
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return nil, fmt.Errorf("invalid runtime mode: %v", cfg.NVIDIAContainerRuntimeConfig.Mode)
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}
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