mirror of
https://github.com/NVIDIA/nvidia-container-toolkit
synced 2024-11-29 16:02:10 +00:00
1c05a463bd
This change adds support for a "csv" discovery mode to the experimental runtime. If this is set with experimental = true, a CSV-based discovery of devices and mounts are used to define the modifications required to the OCI spec. The edits are expressed as CDI ContainerEdits. Signed-off-by: Evan Lezar <elezar@nvidia.com>
75 lines
2.5 KiB
Go
75 lines
2.5 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 main
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import (
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"fmt"
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"github.com/NVIDIA/nvidia-container-toolkit/cmd/nvidia-container-runtime/modifier"
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"github.com/NVIDIA/nvidia-container-toolkit/internal/config"
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"github.com/NVIDIA/nvidia-container-toolkit/internal/oci"
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"github.com/NVIDIA/nvidia-container-toolkit/internal/runtime"
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"github.com/sirupsen/logrus"
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)
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const (
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dockerRuncExecutableName = "docker-runc"
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runcExecutableName = "runc"
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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 *logrus.Logger, cfg *config.Config, argv []string) (oci.Runtime, error) {
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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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lowLevelRuntimeCandidates := []string{dockerRuncExecutableName, runcExecutableName}
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lowLevelRuntime, err := oci.NewLowLevelRuntime(logger, lowLevelRuntimeCandidates)
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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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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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if specModifier == nil {
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logger.Infof("Using low-level runtime with no modification")
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return lowLevelRuntime, nil
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}
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// Create the wrapping runtime with the specified modifier
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r := runtime.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 *logrus.Logger, cfg *config.Config, ociSpec oci.Spec) (oci.SpecModifier, error) {
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if !cfg.NVIDIAContainerRuntimeConfig.Experimental {
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return modifier.NewStableRuntimeModifier(logger), nil
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}
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return modifier.NewExperimentalModifier(logger, cfg, ociSpec)
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}
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