remove FollowInMemoryMessages

weed/mq/broker/broker_grpc_pub_follow.go

@@ -2,97 +2,11 @@ package broker
 
 import (
 	"context"
-	"fmt"
 	"github.com/seaweedfs/seaweedfs/weed/glog"
-	"github.com/seaweedfs/seaweedfs/weed/pb"
 	"github.com/seaweedfs/seaweedfs/weed/pb/mq_pb"
-	"io"
-	"math/rand"
-	"sync"
-	"time"
 )
 
 func (b *MessageQueueBroker) PublishFollowMe(c context.Context, request *mq_pb.PublishFollowMeRequest) (*mq_pb.PublishFollowMeResponse, error) {
 	glog.V(0).Infof("PublishFollowMe %v", request)
-	var wg sync.WaitGroup
-	wg.Add(1)
-	var ret error
-	go b.withBrokerClient(true, pb.ServerAddress(request.BrokerSelf), func(client mq_pb.SeaweedMessagingClient) error {
-		followerId := rand.Int31()
-		subscribeClient, err := client.FollowInMemoryMessages(context.Background(), &mq_pb.FollowInMemoryMessagesRequest{
-			Message: &mq_pb.FollowInMemoryMessagesRequest_Init{
-				Init: &mq_pb.FollowInMemoryMessagesRequest_InitMessage{
-					ConsumerGroup: string(b.option.BrokerAddress()),
-					ConsumerId:    fmt.Sprintf("followMe@%s-%d", b.option.BrokerAddress(), followerId),
-					FollowerId:    followerId,
-					Topic:         request.Topic,
-					PartitionOffset: &mq_pb.PartitionOffset{
-						Partition: request.Partition,
-						StartTsNs: 0,
-						StartType: mq_pb.PartitionOffsetStartType_EARLIEST_IN_MEMORY,
-					},
-				},
-			},
-		})
-
-		if err != nil {
-			glog.Errorf("FollowInMemoryMessages error: %v", err)
-			ret = err
-			return err
-		}
-
-		// receive first hello message
-		resp, err := subscribeClient.Recv()
-		if err != nil {
-			return fmt.Errorf("FollowInMemoryMessages recv first message error: %v", err)
-		}
-		if resp == nil {
-			glog.V(0).Infof("doFollowInMemoryMessage recv first message nil response")
-			return io.ErrUnexpectedEOF
-		}
-		wg.Done()
-
-		b.doFollowInMemoryMessage(context.Background(), followerId, subscribeClient)
-
-		return nil
-	})
-	wg.Wait()
-	return &mq_pb.PublishFollowMeResponse{}, ret
-}
-
-func (b *MessageQueueBroker) doFollowInMemoryMessage(c context.Context, followerId int32, client mq_pb.SeaweedMessaging_FollowInMemoryMessagesClient) {
-	for {
-		resp, err := client.Recv()
-		if err != nil {
-			if err != io.EOF {
-				glog.V(0).Infof("doFollowInMemoryMessage error: %v", err)
-			}
-			return
-		}
-		if resp == nil {
-			glog.V(0).Infof("doFollowInMemoryMessage nil response")
-			return
-		}
-		if resp.Message != nil {
-			// process ctrl message or data message
-			switch m := resp.Message.(type) {
-			case *mq_pb.FollowInMemoryMessagesResponse_Data:
-				// process data message
-				print("d")
-			case *mq_pb.FollowInMemoryMessagesResponse_Ctrl:
-				// process ctrl message
-				if m.Ctrl.FlushedSequence > 0 {
-					flushTime := time.Unix(0, m.Ctrl.FlushedSequence)
-					glog.V(0).Infof("doFollowInMemoryMessage flushTime: %v", flushTime)
-				}
-				if m.Ctrl.FollowerChangedToId != 0 {
-					// follower changed
-					glog.V(0).Infof("doFollowInMemoryMessage follower changed from %d to %d", followerId, m.Ctrl.FollowerChangedToId)
-					return
-				}
-			default:
-				glog.V(0).Infof("doFollowInMemoryMessage unknown message type: %v", m)
-			}
-		}
-	}
+	return &mq_pb.PublishFollowMeResponse{}, nil
 }