Golang Config.ValidateUnknownAttrs方法代碼示例

func (prov maasEnvironProvider) Validate(cfg, oldCfg *config.Config) (*config.Config, error) {
	// Validate base configuration change before validating MAAS specifics.
	err := config.Validate(cfg, oldCfg)
	if err != nil {
		return nil, err
	}

	validated, err := cfg.ValidateUnknownAttrs(configFields, configDefaults)
	if err != nil {
		return nil, err
	}
	envCfg := new(maasEnvironConfig)
	envCfg.Config = cfg
	envCfg.attrs = validated
	server := envCfg.MAASServer()
	serverURL, err := url.Parse(server)
	if err != nil || serverURL.Scheme == "" || serverURL.Host == "" {
		return nil, fmt.Errorf("malformed maas-server URL '%v': %s", server, err)
	}
	oauth := envCfg.MAASOAuth()
	if strings.Count(oauth, ":") != 2 {
		return nil, errMalformedMaasOAuth
	}
	return cfg.Apply(envCfg.attrs)
}

// Validate ensures that config is a valid configuration for this
// provider like specified in the EnvironProvider interface.
func (prov azureEnvironProvider) Validate(cfg, oldCfg *config.Config) (*config.Config, error) {
	// Validate base configuration change before validating Azure specifics.
	err := config.Validate(cfg, oldCfg)
	if err != nil {
		return nil, err
	}

	validated, err := cfg.ValidateUnknownAttrs(configFields, configDefaults)
	if err != nil {
		return nil, err
	}
	envCfg := new(azureEnvironConfig)
	envCfg.Config = cfg
	envCfg.attrs = validated

	cert := envCfg.managementCertificate()
	if cert == "" {
		certPath := envCfg.attrs["management-certificate-path"].(string)
		pemData, err := ioutil.ReadFile(certPath)
		if err != nil {
			return nil, fmt.Errorf("invalid management-certificate-path: %s", err)
		}
		envCfg.attrs["management-certificate"] = string(pemData)
	}
	delete(envCfg.attrs, "management-certificate-path")
	if envCfg.location() == "" {
		return nil, fmt.Errorf("environment has no location; you need to set one.  E.g. 'West US'")
	}
	if (envCfg.publicStorageAccountName() == "") != (envCfg.publicStorageContainerName() == "") {
		return nil, fmt.Errorf("public-storage-account-name and public-storage-container-name must be specified both or none of them")
	}

	return cfg.Apply(envCfg.attrs)
}

func (p *environProvider) Validate(cfg, old *config.Config) (valid *config.Config, err error) {
	// Check for valid changes for the base config values.
	if err := config.Validate(cfg, old); err != nil {
		return nil, err
	}
	validated, err := cfg.ValidateUnknownAttrs(configFields, configDefaults)
	if err != nil {
		return nil, err
	}
	// Apply the coerced unknown values back into the config.
	return cfg.Apply(validated)
}

// Validate implements environs.EnvironProvider.Validate.
func (provider environProvider) Validate(cfg, old *config.Config) (valid *config.Config, err error) {
	// Check for valid changes for the base config values.
	if err := config.Validate(cfg, old); err != nil {
		return nil, err
	}
	validated, err := cfg.ValidateUnknownAttrs(configFields, configDefaults)
	if err != nil {
		return nil, err
	}
	localConfig := newEnvironConfig(cfg, validated)
	// Before potentially creating directories, make sure that the
	// root directory has not changed.
	if old != nil {
		oldLocalConfig, err := provider.newConfig(old)
		if err != nil {
			return nil, fmt.Errorf("old config is not a valid local config: %v", old)
		}
		if localConfig.rootDir() != oldLocalConfig.rootDir() {
			return nil, fmt.Errorf("cannot change root-dir from %q to %q",
				oldLocalConfig.rootDir(),
				localConfig.rootDir())
		}
		if localConfig.storagePort() != oldLocalConfig.storagePort() {
			return nil, fmt.Errorf("cannot change storage-port from %v to %v",
				oldLocalConfig.storagePort(),
				localConfig.storagePort())
		}
		if localConfig.sharedStoragePort() != oldLocalConfig.sharedStoragePort() {
			return nil, fmt.Errorf("cannot change shared-storage-port from %v to %v",
				oldLocalConfig.sharedStoragePort(),
				localConfig.sharedStoragePort())
		}
	}
	dir := utils.NormalizePath(localConfig.rootDir())
	if dir == "." {
		dir = config.JujuHomePath(cfg.Name())
		localConfig.attrs["root-dir"] = dir
	}

	// Apply the coerced unknown values back into the config.
	return cfg.Apply(localConfig.attrs)
}

// Validate ensures that config is a valid configuration for this
// provider like specified in the EnvironProvider interface.
func (prov azureEnvironProvider) Validate(cfg, oldCfg *config.Config) (*config.Config, error) {
	// Validate base configuration change before validating Azure specifics.
	err := config.Validate(cfg, oldCfg)
	if err != nil {
		return nil, err
	}

	validated, err := cfg.ValidateUnknownAttrs(configFields, configDefaults)
	if err != nil {
		return nil, err
	}
	envCfg := new(azureEnvironConfig)
	envCfg.Config = cfg
	envCfg.attrs = validated

	cert := envCfg.ManagementCertificate()
	if cert == "" {
		certPath := envCfg.attrs["management-certificate-path"].(string)
		pemData, err := ioutil.ReadFile(certPath)
		if err != nil {
			return nil, fmt.Errorf("invalid management-certificate-path: %s", err)
		}
		envCfg.attrs["management-certificate"] = string(pemData)
	}
	delete(envCfg.attrs, "management-certificate-path")
	if envCfg.StorageContainerName() == "" {
		return nil, fmt.Errorf("environment has no storage-container-name; auto-creation of storage containers is not yet supported")
	}
	if (envCfg.PublicStorageAccountName() == "") != (envCfg.PublicStorageContainerName() == "") {
		return nil, fmt.Errorf("public-storage-account-name and public-storage-container-name must be specified both or none of them")
	}
	if oldCfg != nil {
		attrs := oldCfg.UnknownAttrs()
		if storageContainerName, _ := attrs["storage-container-name"].(string); envCfg.StorageContainerName() != storageContainerName {
			return nil, fmt.Errorf("cannot change storage-container-name from %q to %q", storageContainerName, envCfg.StorageContainerName())
		}
	}

	return cfg.Apply(envCfg.attrs)
}