/
kafka_writer.go
91 lines (75 loc) · 2.41 KB
/
kafka_writer.go
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package tunnel
import (
"bytes"
"encoding/binary"
"mongoshake/tunnel/kafka"
LOG "github.com/vinllen/log4go"
)
type KafkaWriter struct {
RemoteAddr string
writer *kafka.SyncWriter
TunnelKafkaSecurity string
KafkaClientCer string
KafkaClientKey string
KafkaServerCer string
KafkaSaslUser string
KafkaSaslPassword string
}
func (tunnel *KafkaWriter) Prepare() bool {
writer, err := kafka.NewSyncWriter(&kafka.KafkaWriteInfo{
RemoteAddr: tunnel.RemoteAddr,
TunnelKafkaSecurity: tunnel.TunnelKafkaSecurity,
KafkaClientCer: tunnel.KafkaClientCer,
KafkaClientKey: tunnel.KafkaClientKey,
KafkaServerCer: tunnel.KafkaServerCer,
KafkaSaslUser: tunnel.KafkaSaslUser,
KafkaSaslPassword: tunnel.KafkaSaslPassword,
})
if err != nil {
LOG.Critical("KafkaWriter prepare[%v] create writer error[%v]", tunnel.RemoteAddr, err)
return false
}
if err := writer.Start(); err != nil {
LOG.Critical("KafkaWriter prepare[%v] start writer error[%v]", tunnel.RemoteAddr, err)
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())
LOG.Info("KafkaWriter send[%v] send bytes size [%v]", tunnel.RemoteAddr, len(byteBuffer.Bytes()))
if err != nil {
LOG.Error("KafkaWriter send[%v] send bytes size [%v]", tunnel.RemoteAddr, len(byteBuffer.Bytes()))
LOG.Error("KafkaWriter send[%v] error[%v]", tunnel.RemoteAddr, err)
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
}