mirror of
https://github.com/NVIDIA/nvidia-container-toolkit
synced 2024-11-25 21:39:10 +00:00
239b6d3739
This change enables the experimental mode of the NVIDIA Container Runtime. If enabled, the nvidia-container-runtime.discover-mode config option is queried to determine how required OCI spec modifications should be defined. If "legacy" is selected, the existing NVIDIA Container Runtime hooks is discovered and injected into the OCI spec. Signed-off-by: Evan Lezar <elezar@nvidia.com>
93 lines
2.4 KiB
Go
93 lines
2.4 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 config
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import (
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"fmt"
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"io"
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"os"
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"path"
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"github.com/pelletier/go-toml"
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)
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const (
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configOverride = "XDG_CONFIG_HOME"
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configFilePath = "nvidia-container-runtime/config.toml"
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)
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var (
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configDir = "/etc/"
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)
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// RuntimeConfig stores the config options for the NVIDIA Container Runtime
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type RuntimeConfig struct {
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DebugFilePath string
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Experimental bool
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DiscoverMode string
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}
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// GetRuntimeConfig sets up the config struct. Values are read from a toml file
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// or set via the environment.
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func GetRuntimeConfig() (*RuntimeConfig, error) {
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if XDGConfigDir := os.Getenv(configOverride); len(XDGConfigDir) != 0 {
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configDir = XDGConfigDir
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}
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configFilePath := path.Join(configDir, configFilePath)
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tomlFile, err := os.Open(configFilePath)
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if err != nil {
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return nil, fmt.Errorf("failed to open config file %v: %v", configFilePath, err)
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}
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defer tomlFile.Close()
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cfg, err := getRuntimeConfigFrom(tomlFile)
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if err != nil {
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return nil, fmt.Errorf("failed to read config values: %v", err)
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}
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return cfg, nil
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}
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// getRuntimeConfigFrom reads the config from the specified Reader
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func getRuntimeConfigFrom(reader io.Reader) (*RuntimeConfig, error) {
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toml, err := toml.LoadReader(reader)
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if err != nil {
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return nil, err
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}
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cfg := getDefaultRuntimeConfig()
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cfg.DebugFilePath = toml.GetDefault("nvidia-container-runtime.debug", cfg.DebugFilePath).(string)
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cfg.Experimental = toml.GetDefault("nvidia-container-runtime.experimental", cfg.Experimental).(bool)
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cfg.DiscoverMode = toml.GetDefault("nvidia-container-runtime.discover-mode", cfg.DiscoverMode).(string)
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return cfg, nil
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}
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// getDefaultRuntimeConfig defines the default values for the config
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func getDefaultRuntimeConfig() *RuntimeConfig {
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c := RuntimeConfig{
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DebugFilePath: "/dev/null",
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Experimental: false,
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DiscoverMode: "legacy",
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}
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return &c
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}
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