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fluent.go
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fluent.go
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package main
import (
"encoding/json"
"errors"
"fmt"
"io"
"net"
"time"
"github.com/samuel/go-thrift/examples/scribe"
"github.com/samuel/go-thrift/thrift"
"gopkg.in/vmihailenco/msgpack.v2"
)
const (
dialTimeout = 10 * time.Millisecond
)
type fluent struct {
scribe *scribe.ScribeClient
conn io.WriteCloser
}
func (f *fluent) connectScribe() error {
conn, err := net.DialTimeout("tcp", "127.0.0.1:1463", dialTimeout)
if err != nil {
return err
}
t := thrift.NewTransport(thrift.NewFramedReadWriteCloser(conn, 0), thrift.BinaryProtocol)
client := thrift.NewClient(t, false)
f.scribe = &scribe.ScribeClient{Client: client}
return nil
}
func (f *fluent) connectTCP() error {
conn, err := net.DialTimeout("tcp", "127.0.0.1:24224", dialTimeout)
if err != nil {
return err
}
f.conn = conn
return nil
}
func (f *fluent) sendMessage(m *message) error {
if m.Time == 0 {
m.Time = time.Now().Unix()
}
if f.scribe != nil {
b, err := json.Marshal(m.Record)
if err != nil {
return err
}
res, err := f.scribe.Log([]*scribe.LogEntry{{m.Tag, string(b)}})
if err != nil {
return err
}
if res != scribe.ResultCodeOk {
return fmt.Errorf("fluent#sendMessage: send returned %s", res.String())
}
return nil
}
payload := []interface{}{m.Tag, []interface{}{[]interface{}{m.Time, m.Record}}}
b, err := msgpack.Marshal(payload)
if err != nil {
return err
}
return f.send(b)
}
func (f *fluent) send(b []byte) error {
if f.conn == nil {
return errors.New("fluent#send: not connected")
}
_, err := f.conn.Write(b)
return err
}
func (f *fluent) close() error {
if f.conn != nil {
f.conn.Close()
f.conn = nil
}
return nil
}
type message struct {
Tag string
Time int64
Record map[string]interface{}
}