Golang Config.UnknownAttrs方法代码示例

func (p *environProvider) Validate(cfg, old *config.Config) (valid *config.Config, err error) {
	v, err := checker.Coerce(cfg.UnknownAttrs(), nil)
	if err != nil {
		return nil, err
	}
	attrs := v.(map[string]interface{})
	switch cfg.FirewallMode() {
	case config.FwDefault:
		attrs["firewall-mode"] = config.FwInstance
	case config.FwInstance, config.FwGlobal:
	default:
		return nil, fmt.Errorf("unsupported firewall mode: %q", cfg.FirewallMode())
	}
	return cfg.Apply(attrs)
}

func (p environProvider) Validate(cfg, old *config.Config) (valid *config.Config, err error) {
	v, err := configChecker.Coerce(cfg.UnknownAttrs(), nil)
	if err != nil {
		return nil, err
	}
	ecfg := &environConfig{cfg, v.(map[string]interface{})}
	if ecfg.accessKey() == "" || ecfg.secretKey() == "" {
		auth, err := aws.EnvAuth()
		if err != nil || ecfg.accessKey() != "" || ecfg.secretKey() != "" {
			return nil, fmt.Errorf("environment has no access-key or secret-key")
		}
		ecfg.attrs["access-key"] = auth.AccessKey
		ecfg.attrs["secret-key"] = auth.SecretKey
	}
	if _, ok := aws.Regions[ecfg.region()]; !ok {
		return nil, fmt.Errorf("invalid region name %q", ecfg.region())
	}
	if _, ok := aws.Regions[ecfg.publicBucketRegion()]; !ok {
		return nil, fmt.Errorf("invalid public-bucket-region name %q", ecfg.publicBucketRegion())
	}

	if old != nil {
		attrs := old.UnknownAttrs()
		if region, _ := attrs["region"].(string); ecfg.region() != region {
			return nil, fmt.Errorf("cannot change region from %q to %q", region, ecfg.region())
		}
		if bucket, _ := attrs["control-bucket"].(string); ecfg.controlBucket() != bucket {
			return nil, fmt.Errorf("cannot change control-bucket from %q to %q", bucket, ecfg.controlBucket())
		}
	}

	switch cfg.FirewallMode() {
	case config.FwDefault:
		ecfg.attrs["firewall-mode"] = config.FwInstance
	case config.FwInstance, config.FwGlobal:
	default:
		return nil, fmt.Errorf("unsupported firewall mode: %q", cfg.FirewallMode())
	}

	// ssl-hostname-verification cannot be disabled
	if !ecfg.SSLHostnameVerification() {
		return nil, fmt.Errorf("disabling ssh-hostname-verification is not supported")
	}

	return cfg.Apply(ecfg.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.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)
}

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
	}

	// Check for deprecated fields and log a warning. We also print to stderr to ensure the user sees the message
	// even if they are not running with --debug.
	if defaultImageId := cfg.AllAttrs()["default-image-id"]; defaultImageId != nil && defaultImageId.(string) != "" {
		msg := fmt.Sprintf(
			"config attribute %q (%v) is deprecated and ignored, use simplestreams metadata instead",
			"default-image-id", defaultImageId)
		log.Warningf(msg)
	}
	if defaultInstanceType := cfg.AllAttrs()["default-instance-type"]; defaultInstanceType != nil && defaultInstanceType.(string) != "" {
		msg := fmt.Sprintf(
			"config attribute %q (%v) is deprecated and ignored", "default-instance-type", defaultInstanceType)
		log.Warningf(msg)
	}

	validated, err := cfg.ValidateUnknownAttrs(configFields, configDefaults)
	if err != nil {
		return nil, err
	}
	ecfg := &environConfig{cfg, validated}

	authMode := AuthMode(ecfg.authMode())
	switch authMode {
	case AuthKeyPair:
	case AuthLegacy:
	case AuthUserPass:
	default:
		return nil, fmt.Errorf("invalid authorization mode: %q", authMode)
	}

	if ecfg.authURL() != "" {
		parts, err := url.Parse(ecfg.authURL())
		if err != nil || parts.Host == "" || parts.Scheme == "" {
			return nil, fmt.Errorf("invalid auth-url value %q", ecfg.authURL())
		}
	}
	cred := identity.CredentialsFromEnv()
	format := "required environment variable not set for credentials attribute: %s"
	if authMode == AuthUserPass || authMode == AuthLegacy {
		if ecfg.username() == "" {
			if cred.User == "" {
				return nil, fmt.Errorf(format, "User")
			}
			ecfg.attrs["username"] = cred.User
		}
		if ecfg.password() == "" {
			if cred.Secrets == "" {
				return nil, fmt.Errorf(format, "Secrets")
			}
			ecfg.attrs["password"] = cred.Secrets
		}
	} else if authMode == AuthKeyPair {
		if ecfg.accessKey() == "" {
			if cred.User == "" {
				return nil, fmt.Errorf(format, "User")
			}
			ecfg.attrs["access-key"] = cred.User
		}
		if ecfg.secretKey() == "" {
			if cred.Secrets == "" {
				return nil, fmt.Errorf(format, "Secrets")
			}
			ecfg.attrs["secret-key"] = cred.Secrets
		}
	}
	if ecfg.authURL() == "" {
		if cred.URL == "" {
			return nil, fmt.Errorf(format, "URL")
		}
		ecfg.attrs["auth-url"] = cred.URL
	}
	if ecfg.tenantName() == "" {
		if cred.TenantName == "" {
			return nil, fmt.Errorf(format, "TenantName")
		}
		ecfg.attrs["tenant-name"] = cred.TenantName
	}
	if ecfg.region() == "" {
		if cred.Region == "" {
			return nil, fmt.Errorf(format, "Region")
		}
		ecfg.attrs["region"] = cred.Region
	}

	if old != nil {
		attrs := old.UnknownAttrs()
		if region, _ := attrs["region"].(string); ecfg.region() != region {
			return nil, fmt.Errorf("cannot change region from %q to %q", region, ecfg.region())
		}
		if controlBucket, _ := attrs["control-bucket"].(string); ecfg.controlBucket() != controlBucket {
			return nil, fmt.Errorf("cannot change control-bucket from %q to %q", controlBucket, ecfg.controlBucket())
		}
	}

	// Apply the coerced unknown values back into the config.
//.........这里部分代码省略.........