/
kafka_writer.go
68 lines (55 loc) · 1.47 KB
/
kafka_writer.go
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
package tunnel
import (
"bytes"
"encoding/binary"
"mongoshake/tunnel/kafka"
)
type KafkaWriter struct {
RemoteAddr string
writer *kafka.SyncWriter
}
func (tunnel *KafkaWriter) Prepare() bool {
writer, err := kafka.NewSyncWriter(tunnel.RemoteAddr)
if err != nil {
return false
}
if err := writer.Start(); err != nil {
return false
}
tunnel.writer = writer
return true
}
func (tunnel *KafkaWriter) Send(message *WMessage) int64 {
if len(message.RawLogs) == 0 || message.Tag&MsgProbe != 0 {
return 0
}
message.Tag |= MsgPersistent
byteBuffer := bytes.NewBuffer([]byte{})
// checksum
binary.Write(byteBuffer, binary.BigEndian, uint32(message.Checksum))
// tag
binary.Write(byteBuffer, binary.BigEndian, uint32(message.Tag))
// shard
binary.Write(byteBuffer, binary.BigEndian, uint32(message.Shard))
// compressor
binary.Write(byteBuffer, binary.BigEndian, uint32(message.Compress))
// serialize log count
binary.Write(byteBuffer, binary.BigEndian, uint32(len(message.RawLogs)))
// serialize logs
for _, log := range message.RawLogs {
binary.Write(byteBuffer, binary.BigEndian, uint32(len(log)))
binary.Write(byteBuffer, binary.BigEndian, log)
}
err := tunnel.writer.SimpleWrite(byteBuffer.Bytes())
if err != nil {
return ReplyError
}
// KafkaWriter.AckRequired() is always false, return 0 directly
return 0
}
func (tunnel *KafkaWriter) AckRequired() bool {
return false
}
func (tunnel *KafkaWriter) ParsedLogsRequired() bool {
return false
}