Golang datastore.NewDataStoreFromConfig函数代码示例

// Init registers a new instance of overlay driver
func Init(dc driverapi.DriverCallback, config map[string]interface{}) error {
	c := driverapi.Capability{
		DataScope: datastore.GlobalScope,
	}
	d := &driver{
		networks: networkTable{},
		peerDb: peerNetworkMap{
			mp: map[string]*peerMap{},
		},
		secMap: &encrMap{nodes: map[string][]*spi{}},
		config: config,
	}

	if data, ok := config[netlabel.GlobalKVClient]; ok {
		var err error
		dsc, ok := data.(discoverapi.DatastoreConfigData)
		if !ok {
			return types.InternalErrorf("incorrect data in datastore configuration: %v", data)
		}
		d.store, err = datastore.NewDataStoreFromConfig(dsc)
		if err != nil {
			return types.InternalErrorf("failed to initialize data store: %v", err)
		}
	}

	if data, ok := config[netlabel.LocalKVClient]; ok {
		var err error
		dsc, ok := data.(discoverapi.DatastoreConfigData)
		if !ok {
			return types.InternalErrorf("incorrect data in datastore configuration: %v", data)
		}
		d.localStore, err = datastore.NewDataStoreFromConfig(dsc)
		if err != nil {
			return types.InternalErrorf("failed to initialize local data store: %v", err)
		}
	}

	if err := d.restoreEndpoints(); err != nil {
		logrus.Warnf("Failure during overlay endpoints restore: %v", err)
	}

	// If an error happened when the network join the sandbox during the endpoints restore
	// we should reset it now along with the once variable, so that subsequent endpoint joins
	// outside of the restore path can potentially fix the network join and succeed.
	for nid, n := range d.networks {
		if n.initErr != nil {
			logrus.Infof("resetting init error and once variable for network %s after unsuccesful endpoint restore: %v", nid, n.initErr)
			n.initErr = nil
			n.once = &sync.Once{}
		}
	}

	return dc.RegisterDriver(networkType, d, c)
}

// Init registers a new instance of overlay driver
func Init(dc driverapi.DriverCallback, config map[string]interface{}) error {
	c := driverapi.Capability{
		DataScope: datastore.GlobalScope,
	}
	d := &driver{
		networks: networkTable{},
		peerDb: peerNetworkMap{
			mp: map[string]*peerMap{},
		},
		secMap: &encrMap{nodes: map[string][]*spi{}},
		config: config,
	}

	if data, ok := config[netlabel.GlobalKVClient]; ok {
		var err error
		dsc, ok := data.(discoverapi.DatastoreConfigData)
		if !ok {
			return types.InternalErrorf("incorrect data in datastore configuration: %v", data)
		}
		d.store, err = datastore.NewDataStoreFromConfig(dsc)
		if err != nil {
			return types.InternalErrorf("failed to initialize data store: %v", err)
		}
	}

	return dc.RegisterDriver(networkType, d, c)
}

// DiscoverNew is a notification for a new discovery event, such as a new node joining a cluster
func (d *driver) DiscoverNew(dType discoverapi.DiscoveryType, data interface{}) error {
	switch dType {
	case discoverapi.NodeDiscovery:
		nodeData, ok := data.(discoverapi.NodeDiscoveryData)
		if !ok || nodeData.Address == "" {
			return fmt.Errorf("invalid discovery data")
		}
		d.nodeJoin(nodeData.Address, nodeData.Self)
	case discoverapi.DatastoreConfig:
		var err error
		if d.store != nil {
			return types.ForbiddenErrorf("cannot accept datastore configuration: Overlay driver has a datastore configured already")
		}
		dsc, ok := data.(discoverapi.DatastoreConfigData)
		if !ok {
			return types.InternalErrorf("incorrect data in datastore configuration: %v", data)
		}
		d.store, err = datastore.NewDataStoreFromConfig(dsc)
		if err != nil {
			return types.InternalErrorf("failed to initialize data store: %v", err)
		}
	default:
	}
	return nil
}

func (d *driver) initStore(option map[string]interface{}) error {
	if data, ok := option[netlabel.LocalKVClient]; ok {
		var err error
		dsc, ok := data.(discoverapi.DatastoreConfigData)
		if !ok {
			return types.InternalErrorf("incorrect data in datastore configuration: %v", data)
		}
		d.store, err = datastore.NewDataStoreFromConfig(dsc)
		if err != nil {
			return types.InternalErrorf("bridge driver failed to initialize data store: %v", err)
		}

		err = d.populateNetworks()
		if err != nil {
			return err
		}

		err = d.populateEndpoints()
		if err != nil {
			return err
		}
	}

	return nil
}

// DiscoverNew is a notification for a new discovery event, such as a new node joining a cluster
func (d *driver) DiscoverNew(dType discoverapi.DiscoveryType, data interface{}) error {
	var err error
	switch dType {
	case discoverapi.NodeDiscovery:
		nodeData, ok := data.(discoverapi.NodeDiscoveryData)
		if !ok || nodeData.Address == "" {
			return fmt.Errorf("invalid discovery data")
		}
		d.nodeJoin(nodeData.Address, nodeData.Self)
	case discoverapi.DatastoreConfig:
		if d.store != nil {
			return types.ForbiddenErrorf("cannot accept datastore configuration: Overlay driver has a datastore configured already")
		}
		dsc, ok := data.(discoverapi.DatastoreConfigData)
		if !ok {
			return types.InternalErrorf("incorrect data in datastore configuration: %v", data)
		}
		d.store, err = datastore.NewDataStoreFromConfig(dsc)
		if err != nil {
			return types.InternalErrorf("failed to initialize data store: %v", err)
		}
	case discoverapi.EncryptionKeysConfig:
		encrData, ok := data.(discoverapi.DriverEncryptionConfig)
		if !ok {
			return fmt.Errorf("invalid encryption key notification data")
		}
		keys := make([]*key, 0, len(encrData.Keys))
		for i := 0; i < len(encrData.Keys); i++ {
			k, err := parseEncryptionKey(encrData.Keys[i], encrData.Tags[i])
			if err != nil {
				return err
			}
			keys = append(keys, k)
		}
		d.setKeys(keys)
	case discoverapi.EncryptionKeysUpdate:
		var newKey, delKey, priKey *key
		encrData, ok := data.(discoverapi.DriverEncryptionUpdate)
		if !ok {
			return fmt.Errorf("invalid encryption key notification data")
		}
		newKey, err = parseEncryptionKey(encrData.Key, encrData.Tag)
		if err != nil {
			return err
		}
		priKey, err = parseEncryptionKey(encrData.Primary, encrData.PrimaryTag)
		if err != nil {
			return err
		}
		delKey, err = parseEncryptionKey(encrData.Prune, encrData.PruneTag)
		if err != nil {
			return err
		}
		d.updateKeys(newKey, priKey, delKey)
	default:
	}
	return nil
}

// Init registers a new instance of overlay driver
func Init(dc driverapi.DriverCallback, config map[string]interface{}) error {
	c := driverapi.Capability{
		DataScope: datastore.GlobalScope,
	}

	d := &driver{
		networks: networkTable{},
		config:   config,
	}

	if data, ok := config[netlabel.GlobalKVClient]; ok {
		var err error
		dsc, ok := data.(discoverapi.DatastoreConfigData)
		if !ok {
			return types.InternalErrorf("incorrect data in datastore configuration: %v", data)
		}
		d.store, err = datastore.NewDataStoreFromConfig(dsc)
		if err != nil {
			return types.InternalErrorf("failed to initialize data store: %v", err)
		}
	}

	if data, ok := config[netlabel.LocalKVClient]; ok {
		var err error
		dsc, ok := data.(discoverapi.DatastoreConfigData)
		if !ok {
			return types.InternalErrorf("incorrect data in datastore configuration: %v", data)
		}
		d.localStore, err = datastore.NewDataStoreFromConfig(dsc)
		if err != nil {
			return types.InternalErrorf("failed to initialize local data store: %v", err)
		}
	}

	d.restoreEndpoints()

	return dc.RegisterDriver(networkType, d, c)
}

// DiscoverNew informs the allocator about a new global scope datastore
func (a *Allocator) DiscoverNew(dType discoverapi.DiscoveryType, data interface{}) error {
	if dType != discoverapi.DatastoreConfig {
		return nil
	}

	dsc, ok := data.(discoverapi.DatastoreConfigData)
	if !ok {
		return types.InternalErrorf("incorrect data in datastore update notification: %v", data)
	}

	ds, err := datastore.NewDataStoreFromConfig(dsc)
	if err != nil {
		return err
	}

	return a.initializeAddressSpace(globalAddressSpace, ds)
}