1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
|
package sub_client
import (
"context"
"errors"
"fmt"
"github.com/seaweedfs/seaweedfs/weed/glog"
"github.com/seaweedfs/seaweedfs/weed/pb"
"github.com/seaweedfs/seaweedfs/weed/pb/mq_pb"
"github.com/seaweedfs/seaweedfs/weed/pb/schema_pb"
"io"
)
type KeyedOffset struct {
Key []byte
Offset int64
}
func (sub *TopicSubscriber) onEachPartition(assigned *mq_pb.BrokerPartitionAssignment, stopCh chan struct{}, onDataMessageFn OnDataMessageFn) error {
// connect to the partition broker
return pb.WithBrokerGrpcClient(true, assigned.LeaderBroker, sub.SubscriberConfig.GrpcDialOption, func(client mq_pb.SeaweedMessagingClient) error {
subscribeClient, err := client.SubscribeMessage(context.Background())
if err != nil {
return fmt.Errorf("create subscribe client: %w", err)
}
slidingWindowSize := sub.SubscriberConfig.SlidingWindowSize
if slidingWindowSize <= 0 {
slidingWindowSize = 1
}
po := findPartitionOffset(sub.ContentConfig.PartitionOffsets, assigned.Partition)
if po == nil {
po = &schema_pb.PartitionOffset{
Partition: assigned.Partition,
StartTsNs: sub.ContentConfig.OffsetTsNs,
}
}
if err = subscribeClient.Send(&mq_pb.SubscribeMessageRequest{
Message: &mq_pb.SubscribeMessageRequest_Init{
Init: &mq_pb.SubscribeMessageRequest_InitMessage{
ConsumerGroup: sub.SubscriberConfig.ConsumerGroup,
ConsumerId: sub.SubscriberConfig.ConsumerGroupInstanceId,
Topic: sub.ContentConfig.Topic.ToPbTopic(),
PartitionOffset: po,
OffsetType: sub.ContentConfig.OffsetType,
Filter: sub.ContentConfig.Filter,
FollowerBroker: assigned.FollowerBroker,
SlidingWindowSize: slidingWindowSize,
},
},
}); err != nil {
glog.V(0).Infof("subscriber %s connected to partition %+v at %v: %v", sub.ContentConfig.Topic, assigned.Partition, assigned.LeaderBroker, err)
}
glog.V(0).Infof("subscriber %s connected to partition %+v at %v", sub.ContentConfig.Topic, assigned.Partition, assigned.LeaderBroker)
if sub.OnCompletionFunc != nil {
defer sub.OnCompletionFunc()
}
go func() {
for {
select {
case <-sub.ctx.Done():
subscribeClient.CloseSend()
return
case <-stopCh:
subscribeClient.CloseSend()
return
case ack, ok := <-sub.PartitionOffsetChan:
if !ok {
subscribeClient.CloseSend()
return
}
subscribeClient.SendMsg(&mq_pb.SubscribeMessageRequest{
Message: &mq_pb.SubscribeMessageRequest_Ack{
Ack: &mq_pb.SubscribeMessageRequest_AckMessage{
Key: ack.Key,
Sequence: ack.Offset,
},
},
})
}
}
}()
for {
// glog.V(0).Infof("subscriber %s/%s waiting for message", sub.ContentConfig.Topic, sub.SubscriberConfig.ConsumerGroup)
resp, err := subscribeClient.Recv()
if err != nil {
if errors.Is(err, io.EOF) {
return nil
}
return fmt.Errorf("subscribe recv: %w", err)
}
if resp.Message == nil {
glog.V(0).Infof("subscriber %s/%s received nil message", sub.ContentConfig.Topic, sub.SubscriberConfig.ConsumerGroup)
continue
}
select {
case <-sub.ctx.Done():
return nil
case <-stopCh:
return nil
default:
}
switch m := resp.Message.(type) {
case *mq_pb.SubscribeMessageResponse_Data:
if m.Data.Ctrl != nil {
glog.V(2).Infof("subscriber %s received control from producer:%s isClose:%v", sub.SubscriberConfig.ConsumerGroup, m.Data.Ctrl.PublisherName, m.Data.Ctrl.IsClose)
continue
}
if len(m.Data.Key) == 0 {
// fmt.Printf("empty key %+v, type %v\n", m, reflect.TypeOf(m))
continue
}
onDataMessageFn(m)
case *mq_pb.SubscribeMessageResponse_Ctrl:
// glog.V(0).Infof("subscriber %s/%s/%s received control %+v", sub.ContentConfig.Namespace, sub.ContentConfig.Topic, sub.SubscriberConfig.ConsumerGroup, m.Ctrl)
if m.Ctrl.IsEndOfStream || m.Ctrl.IsEndOfTopic {
return io.EOF
}
}
}
})
}
func findPartitionOffset(partitionOffsets []*schema_pb.PartitionOffset, partition *schema_pb.Partition) *schema_pb.PartitionOffset {
for _, po := range partitionOffsets {
if po.Partition == partition {
return po
}
}
return nil
}
|
