Esempio n. 1
0
// defaultStoragePool returns the default storage pool for the environment.
// The default pool is either user specified, or one that is registered by the provider itself.
func defaultStoragePool(cfg *config.Config, kind storage.StorageKind, cons StorageConstraints) (string, error) {
	switch kind {
	case storage.StorageKindBlock:
		loopPool := string(provider.LoopProviderType)

		emptyConstraints := StorageConstraints{}
		if cons == emptyConstraints {
			// No constraints at all: use loop.
			return loopPool, nil
		}
		// Either size or count specified, use env default.
		defaultPool, ok := cfg.StorageDefaultBlockSource()
		if !ok {
			defaultPool = loopPool
		}
		return defaultPool, nil

	case storage.StorageKindFilesystem:
		rootfsPool := string(provider.RootfsProviderType)
		emptyConstraints := StorageConstraints{}
		if cons == emptyConstraints {
			return rootfsPool, nil
		}

		// TODO(axw) add env configuration for default
		// filesystem source, prefer that.
		defaultPool, ok := cfg.StorageDefaultBlockSource()
		if !ok {
			defaultPool = rootfsPool
		}
		return defaultPool, nil
	}
	return "", ErrNoDefaultStoragePool
}
Esempio n. 2
0
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
	}

	// Add MAAS specific defaults.
	providerDefaults := make(map[string]interface{})

	// Storage.
	if _, ok := cfg.StorageDefaultBlockSource(); !ok {
		providerDefaults[config.StorageDefaultBlockSourceKey] = maasStorageProviderType
	}
	if len(providerDefaults) > 0 {
		if cfg, err = cfg.Apply(providerDefaults); err != nil {
			return nil, err
		}
	}

	if oldCfg != nil {
		oldAttrs := oldCfg.UnknownAttrs()
		validMaasAgentName := false
		if oldName, ok := oldAttrs["maas-agent-name"]; !ok || oldName == nil {
			// If maas-agent-name was nil (because the config was
			// generated pre-1.16.2 the only correct value for it is ""
			// See bug #1256179
			validMaasAgentName = (validated["maas-agent-name"] == "")
		} else {
			validMaasAgentName = (validated["maas-agent-name"] == oldName)
		}
		if !validMaasAgentName {
			return nil, fmt.Errorf("cannot change maas-agent-name")
		}
	}
	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)
}
Esempio n. 3
0
func configWithDefaults(cfg *config.Config) (*config.Config, error) {
	defaults := make(map[string]interface{})
	if _, ok := cfg.StorageDefaultBlockSource(); !ok {
		// Set the default block source.
		defaults[config.StorageDefaultBlockSourceKey] = storageProviderType
	}
	if len(defaults) == 0 {
		return cfg, nil
	}
	return cfg.Apply(defaults)
}
Esempio n. 4
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func validateConfig(cfg, old *config.Config) (*environConfig, 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
	}

	// Add EC2 specific defaults.
	providerDefaults := make(map[string]interface{})

	// Storage.
	if _, ok := cfg.StorageDefaultBlockSource(); !ok {
		providerDefaults[config.StorageDefaultBlockSourceKey] = EBS_ProviderType
	}
	if len(providerDefaults) > 0 {
		if cfg, err = cfg.Apply(providerDefaults); err != nil {
			return nil, err
		}
	}
	ecfg := &environConfig{cfg, validated}

	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 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())
		}
	}

	// ssl-hostname-verification cannot be disabled
	if !ecfg.SSLHostnameVerification() {
		return nil, fmt.Errorf("disabling ssh-hostname-verification is not supported")
	}
	return ecfg, nil
}
Esempio n. 5
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// 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
	}

	// User cannot change availability-sets-enabled after environment is prepared.
	if oldCfg != nil {
		if oldCfg.AllAttrs()["availability-sets-enabled"] != cfg.AllAttrs()["availability-sets-enabled"] {
			return nil, fmt.Errorf("cannot change availability-sets-enabled")
		}
	}

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

	if _, ok := cfg.StorageDefaultBlockSource(); !ok {
		// Default volume source not specified; set
		// it to the azure storage provider.
		envCfg.attrs[config.StorageDefaultBlockSourceKey] = storageProviderType
	}

	cert := envCfg.managementCertificate()
	if cert == "" {
		certPath := envCfg.attrs["management-certificate-path"].(string)
		pemData, err := readPEMFile(certPath)
		if err != nil {
			return nil, fmt.Errorf("invalid management-certificate-path: %s", err)
		}
		envCfg.attrs["management-certificate"] = string(pemData)
	} else {
		if block, _ := pem.Decode([]byte(cert)); block == nil {
			return nil, fmt.Errorf("invalid management-certificate: not a PEM encoded certificate")
		}
	}
	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'")
	}
	return cfg.Apply(envCfg.attrs)
}
Esempio n. 6
0
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, p.Configurator.GetConfigDefaults())
	if err != nil {
		return nil, err
	}

	// Add Openstack specific defaults.
	providerDefaults := map[string]interface{}{}

	// Storage.
	if _, ok := cfg.StorageDefaultBlockSource(); !ok {
		providerDefaults[config.StorageDefaultBlockSourceKey] = CinderProviderType
	}
	if len(providerDefaults) > 0 {
		if cfg, err = cfg.Apply(providerDefaults); err != nil {
			return nil, err
		}
	}

	ecfg := &environConfig{cfg, validated}

	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 model variable not set for credentials attribute: %s"
	switch ecfg.authMode() {
	case AuthUserPass, 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
		}
	case 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
		}
	default:
		return nil, fmt.Errorf("unexpected authentication mode %q", ecfg.authMode())
	}
	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())
		}
	}

	// 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.
	cfgAttrs := cfg.AllAttrs()
	if defaultImageId := cfgAttrs["default-image-id"]; defaultImageId != nil && defaultImageId.(string) != "" {
		msg := fmt.Sprintf(
			"Config attribute %q (%v) is deprecated and ignored.\n"+
				"Your cloud provider should have set up image metadata to provide the correct image id\n"+
				"for your chosen series and archietcure. If this is a private Openstack deployment without\n"+
				"existing image metadata, please run 'juju-metadata help' to see how suitable image"+
				"metadata can be generated.",
			"default-image-id", defaultImageId)
		logger.Warningf(msg)
	}
	if defaultInstanceType := cfgAttrs["default-instance-type"]; defaultInstanceType != nil && defaultInstanceType.(string) != "" {
		msg := fmt.Sprintf(
			"Config attribute %q (%v) is deprecated and ignored.\n"+
				"The correct instance flavor is determined using constraints, globally specified\n"+
				"when an model is bootstrapped, or individually when a charm is deployed.\n"+
				"See 'juju help bootstrap' or 'juju help deploy'.",
			"default-instance-type", defaultInstanceType)
		logger.Warningf(msg)
	}
	// Construct a new config with the deprecated attributes removed.
	for _, attr := range []string{"default-image-id", "default-instance-type"} {
		delete(cfgAttrs, attr)
		delete(ecfg.attrs, attr)
	}
	for k, v := range ecfg.attrs {
		cfgAttrs[k] = v
	}
	return config.New(config.NoDefaults, cfgAttrs)
}