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
|
package broker
import (
"io"
"time"
"github.com/golang/protobuf/proto"
"github.com/chrislusf/seaweedfs/weed/glog"
"github.com/chrislusf/seaweedfs/weed/pb/messaging_pb"
)
func (broker *MessageBroker) Publish(stream messaging_pb.SeaweedMessaging_PublishServer) error {
// process initial request
in, err := stream.Recv()
if err == io.EOF {
return nil
}
if err != nil {
return err
}
// TODO look it up
topicConfig := &messaging_pb.TopicConfiguration{
IsTransient: true,
}
// send init response
initResponse := &messaging_pb.PublishResponse{
Config: nil,
Redirect: nil,
}
err = stream.Send(initResponse)
if err != nil {
return err
}
if initResponse.Redirect != nil {
return nil
}
// get lock
tp := TopicPartition{
Namespace: in.Init.Namespace,
Topic: in.Init.Topic,
Partition: in.Init.Partition,
}
tl := broker.topicLocks.RequestLock(tp, topicConfig, true)
defer broker.topicLocks.ReleaseLock(tp, true)
updatesChan := make(chan int32)
go func() {
for update := range updatesChan {
if err := stream.Send(&messaging_pb.PublishResponse{
Config: &messaging_pb.PublishResponse_ConfigMessage{
PartitionCount: update,
},
}); err != nil {
glog.V(0).Infof("err sending publish response: %v", err)
return
}
}
}()
// process each message
for {
in, err := stream.Recv()
if err == io.EOF {
return nil
}
if err != nil {
return err
}
if in.Data == nil {
continue
}
m := &messaging_pb.Message{
Timestamp: time.Now().UnixNano(),
Key: in.Data.Key,
Value: in.Data.Value,
Headers: in.Data.Headers,
}
// fmt.Printf("received: %d : %s\n", len(m.Value), string(m.Value))
data, err := proto.Marshal(m)
if err != nil {
glog.Errorf("marshall error: %v\n", err)
continue
}
tl.logBuffer.AddToBuffer(in.Data.Key, data)
}
}
|
