mirror of
https://github.com/NVIDIA/nvidia-container-toolkit
synced 2024-11-22 16:29:18 +00:00
bf2bdfd35e
This change refactors the toml config file handlig for runtimes such as containerd or crio. A toml.Loader is introduced that encapsulates loading the required file. This can be extended to allow other mechanisms for loading loading the current config. Signed-off-by: Evan Lezar <elezar@nvidia.com>
101 lines
2.6 KiB
Go
101 lines
2.6 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 containerd
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import (
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"fmt"
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"github.com/NVIDIA/nvidia-container-toolkit/internal/logger"
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"github.com/NVIDIA/nvidia-container-toolkit/pkg/config/engine"
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"github.com/NVIDIA/nvidia-container-toolkit/pkg/config/toml"
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)
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// Config represents the containerd config
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type Config struct {
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*toml.Tree
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Logger logger.Interface
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RuntimeType string
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UseDefaultRuntimeName bool
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ContainerAnnotations []string
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}
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var _ engine.Interface = (*Config)(nil)
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// New creates a containerd config with the specified options
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func New(opts ...Option) (engine.Interface, error) {
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b := &builder{
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runtimeType: defaultRuntimeType,
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}
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for _, opt := range opts {
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opt(b)
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}
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if b.logger == nil {
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b.logger = logger.New()
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}
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if b.configSource == nil {
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b.configSource = toml.FromFile(b.path)
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}
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tomlConfig, err := b.configSource.Load()
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if err != nil {
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return nil, fmt.Errorf("failed to load config: %v", err)
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}
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cfg := &Config{
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Tree: tomlConfig,
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Logger: b.logger,
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RuntimeType: b.runtimeType,
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UseDefaultRuntimeName: b.useLegacyConfig,
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ContainerAnnotations: b.containerAnnotations,
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}
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version, err := cfg.parseVersion(b.useLegacyConfig)
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if err != nil {
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return nil, fmt.Errorf("failed to parse config version: %v", err)
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}
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switch version {
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case 1:
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return (*ConfigV1)(cfg), nil
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case 2:
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return cfg, nil
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}
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return nil, fmt.Errorf("unsupported config version: %v", version)
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}
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// parseVersion returns the version of the config
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func (c *Config) parseVersion(useLegacyConfig bool) (int, error) {
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defaultVersion := 2
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if useLegacyConfig {
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defaultVersion = 1
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}
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switch v := c.Get("version").(type) {
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case nil:
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switch len(c.Keys()) {
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case 0: // No config exists, or the config file is empty, use version inferred from containerd
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return defaultVersion, nil
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default: // A config file exists, has content, and no version is set
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return 1, nil
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}
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case int64:
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return int(v), nil
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default:
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return -1, fmt.Errorf("unsupported type for version field: %v", v)
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}
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}
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