Function LoadConfig

config/config.go:73–115

LoadConfig loads configuration from JSON file at 'path'

(path string)

// LoadConfig loads configuration from JSON file at 'path'
func LoadConfig(path string) (*Config, error) {
	if path == "" {
		path = os.Getenv(ConfigPathEnvName)
	}

	if path == "" {
		path = defaultConfigPath
	}

	data, err := os.ReadFile(path)
	if err != nil {
		return nil, fmt.Errorf("failed to read config from %q: %w", path, err)
	}

	cfg := &Config{
		KernelArgs:      defaultKernelArgs,
		KernelImagePath: defaultKernelPath,
		RootDrive:       defaultRootfsPath,
		ShimBaseDir:     defaultShimBaseDir,
		JailerConfig: JailerConfig{
			RuncConfigPath: runcConfigPath,
		},
	}

	flag, err := internal.SupportCPUTemplate()
	if err != nil {
		return nil, err
	}
	if flag {
		cfg.CPUTemplate = string(defaultCPUTemplate)
	}

	if err := json.Unmarshal(data, cfg); err != nil {
		return nil, fmt.Errorf("failed to unmarshal config from %q: %w", path, err)
	}

	cfg.DebugHelper, err = debug.New(cfg.LogLevels...)
	if err != nil {
		return nil, err
	}

	return cfg, nil
}