Function Load

cli/compose/loader/loader.go:79–141

Load reads a ConfigDetails and returns a fully loaded configuration

(configDetails types.ConfigDetails, opt ...func(*Options))

// Load reads a ConfigDetails and returns a fully loaded configuration
func Load(configDetails types.ConfigDetails, opt ...func(*Options)) (*types.Config, error) {
	if len(configDetails.ConfigFiles) < 1 {
		return nil, errors.New("no files specified")
	}

	options := &Options{
		Interpolate: &interp.Options{
			Substitute:      template.Substitute,
			LookupValue:     configDetails.LookupEnv,
			TypeCastMapping: interpolateTypeCastMapping,
		},
	}

	for _, op := range opt {
		op(options)
	}

	configs := []*types.Config{}
	var err error

	for _, file := range configDetails.ConfigFiles {
		configDict := file.Config
		version := schema.Version(configDict)
		if configDetails.Version == "" {
			configDetails.Version = version
		}
		if configDetails.Version != version {
			return nil, fmt.Errorf("version mismatched between two composefiles : %v and %v", configDetails.Version, version)
		}

		if err := validateForbidden(configDict); err != nil {
			return nil, err
		}

		if !options.SkipInterpolation {
			configDict, err = interpolateConfig(configDict, *options.Interpolate)
			if err != nil {
				return nil, err
			}
		}

		if !options.SkipValidation {
			if err := schema.Validate(configDict, configDetails.Version); err != nil {
				return nil, err
			}
		}

		cfg, err := loadSections(configDict, configDetails)
		if err != nil {
			return nil, err
		}
		cfg.Filename = file.Filename
		if options.discardEnvFiles {
			for i := range cfg.Services {
				cfg.Services[i].EnvFile = nil
			}
		}