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// Copyright (C) 2010, Kyle Lemons <kyle@kylelemons.net>. All rights reserved.
package log4go
import (
"encoding/json"
"fmt"
"net"
"os"
)
// This log writer sends output to a socket
type SocketLogWriter chan *LogRecord
// This is the SocketLogWriter's output method
func (w SocketLogWriter) LogWrite(rec *LogRecord) {
w <- rec
}
func (w SocketLogWriter) Close() {
close(w)
}
func NewSocketLogWriter(proto, hostport string) SocketLogWriter {
sock, err := net.Dial(proto, hostport)
if err != nil {
fmt.Fprintf(os.Stderr, "NewSocketLogWriter(%q): %s\n", hostport, err)
return nil
}
w := SocketLogWriter(make(chan *LogRecord, LogBufferLength))
go func() {
defer func() {
if sock != nil && proto == "tcp" {
sock.Close()
}
}()
for rec := range w {
// Marshall into JSON
js, err := json.Marshal(rec)
if err != nil {
fmt.Fprint(os.Stderr, "SocketLogWriter(%q): %s", hostport, err)
return
}
_, err = sock.Write(js)
if err != nil {
fmt.Fprint(os.Stderr, "SocketLogWriter(%q): %s", hostport, err)
return
}
}
}()
return w
}
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