package broker import ( "fmt" "github.com/seaweedfs/seaweedfs/weed/glog" "github.com/seaweedfs/seaweedfs/weed/mq/balancer" "github.com/seaweedfs/seaweedfs/weed/mq/topic" "time" "github.com/seaweedfs/seaweedfs/weed/cluster" "github.com/seaweedfs/seaweedfs/weed/pb/mq_pb" "github.com/seaweedfs/seaweedfs/weed/wdclient" "google.golang.org/grpc" "github.com/seaweedfs/seaweedfs/weed/pb" "github.com/seaweedfs/seaweedfs/weed/pb/filer_pb" "github.com/seaweedfs/seaweedfs/weed/pb/master_pb" ) type MessageQueueBrokerOption struct { Masters map[string]pb.ServerAddress FilerGroup string DataCenter string Rack string DefaultReplication string MaxMB int Ip string Port int Cipher bool } type MessageQueueBroker struct { mq_pb.UnimplementedSeaweedMessagingServer option *MessageQueueBrokerOption grpcDialOption grpc.DialOption MasterClient *wdclient.MasterClient filers map[pb.ServerAddress]struct{} currentFiler pb.ServerAddress localTopicManager *topic.LocalTopicManager Balancer *balancer.Balancer lockAsBalancer *cluster.LiveLock currentBalancer pb.ServerAddress } func NewMessageBroker(option *MessageQueueBrokerOption, grpcDialOption grpc.DialOption) (mqBroker *MessageQueueBroker, err error) { mqBroker = &MessageQueueBroker{ option: option, grpcDialOption: grpcDialOption, MasterClient: wdclient.NewMasterClient(grpcDialOption, option.FilerGroup, cluster.BrokerType, pb.NewServerAddress(option.Ip, option.Port, 0), option.DataCenter, option.Rack, *pb.NewServiceDiscoveryFromMap(option.Masters)), filers: make(map[pb.ServerAddress]struct{}), localTopicManager: topic.NewLocalTopicManager(), Balancer: balancer.NewBalancer(), } mqBroker.MasterClient.SetOnPeerUpdateFn(mqBroker.OnBrokerUpdate) go mqBroker.MasterClient.KeepConnectedToMaster() existingNodes := cluster.ListExistingPeerUpdates(mqBroker.MasterClient.GetMaster(), grpcDialOption, option.FilerGroup, cluster.FilerType) for _, newNode := range existingNodes { mqBroker.OnBrokerUpdate(newNode, time.Now()) } // keep connecting to balancer go func() { for mqBroker.currentFiler == "" { time.Sleep(time.Millisecond * 237) } self := fmt.Sprintf("%s:%d", option.Ip, option.Port) glog.V(1).Infof("broker %s found filer %s", self, mqBroker.currentFiler) lockClient := cluster.NewLockClient(grpcDialOption, mqBroker.currentFiler) mqBroker.lockAsBalancer = lockClient.StartLock(balancer.LockBrokerBalancer, self) for { err := mqBroker.BrokerConnectToBalancer(self) if err != nil { fmt.Printf("BrokerConnectToBalancer: %v\n", err) } time.Sleep(time.Second) } }() return mqBroker, nil } func (broker *MessageQueueBroker) OnBrokerUpdate(update *master_pb.ClusterNodeUpdate, startFrom time.Time) { if update.NodeType != cluster.FilerType { return } address := pb.ServerAddress(update.Address) if update.IsAdd { broker.filers[address] = struct{}{} if broker.currentFiler == "" { broker.currentFiler = address } } else { delete(broker.filers, address) if broker.currentFiler == address { for filer := range broker.filers { broker.currentFiler = filer break } } } } func (broker *MessageQueueBroker) GetFiler() pb.ServerAddress { return broker.currentFiler } func (broker *MessageQueueBroker) WithFilerClient(streamingMode bool, fn func(filer_pb.SeaweedFilerClient) error) error { return pb.WithFilerClient(streamingMode, 0, broker.GetFiler(), broker.grpcDialOption, fn) } func (broker *MessageQueueBroker) AdjustedUrl(location *filer_pb.Location) string { return location.Url } func (broker *MessageQueueBroker) GetDataCenter() string { return "" } func (broker *MessageQueueBroker) withMasterClient(streamingMode bool, master pb.ServerAddress, fn func(client master_pb.SeaweedClient) error) error { return pb.WithMasterClient(streamingMode, master, broker.grpcDialOption, false, func(client master_pb.SeaweedClient) error { return fn(client) }) } func (broker *MessageQueueBroker) withBrokerClient(streamingMode bool, server pb.ServerAddress, fn func(client mq_pb.SeaweedMessagingClient) error) error { return pb.WithBrokerGrpcClient(streamingMode, server.String(), broker.grpcDialOption, func(client mq_pb.SeaweedMessagingClient) error { return fn(client) }) }