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// Copyright 2014 The Gogs Authors. All rights reserved.
// Copyright 2019 The Gitea Authors. All rights reserved.
// Use of this source code is governed by a MIT-style
// license that can be found in the LICENSE file.
package log
import (
"fmt"
"io"
"net"
jsoniter "github.com/json-iterator/go"
)
type connWriter struct {
innerWriter io.WriteCloser
ReconnectOnMsg bool `json:"reconnectOnMsg"`
Reconnect bool `json:"reconnect"`
Net string `json:"net"`
Addr string `json:"addr"`
}
// Close the inner writer
func (i *connWriter) Close() error {
if i.innerWriter != nil {
return i.innerWriter.Close()
}
return nil
}
// Write the data to the connection
func (i *connWriter) Write(p []byte) (int, error) {
if i.neededConnectOnMsg() {
if err := i.connect(); err != nil {
return 0, err
}
}
if i.ReconnectOnMsg {
defer i.innerWriter.Close()
}
return i.innerWriter.Write(p)
}
func (i *connWriter) neededConnectOnMsg() bool {
if i.Reconnect {
i.Reconnect = false
return true
}
if i.innerWriter == nil {
return true
}
return i.ReconnectOnMsg
}
func (i *connWriter) connect() error {
if i.innerWriter != nil {
i.innerWriter.Close()
i.innerWriter = nil
}
conn, err := net.Dial(i.Net, i.Addr)
if err != nil {
return err
}
if tcpConn, ok := conn.(*net.TCPConn); ok {
err = tcpConn.SetKeepAlive(true)
if err != nil {
return err
}
}
i.innerWriter = conn
return nil
}
func (i *connWriter) releaseReopen() error {
if i.innerWriter != nil {
return i.connect()
}
return nil
}
// ConnLogger implements LoggerProvider.
// it writes messages in keep-live tcp connection.
type ConnLogger struct {
WriterLogger
ReconnectOnMsg bool `json:"reconnectOnMsg"`
Reconnect bool `json:"reconnect"`
Net string `json:"net"`
Addr string `json:"addr"`
}
// NewConn creates new ConnLogger returning as LoggerProvider.
func NewConn() LoggerProvider {
conn := new(ConnLogger)
conn.Level = TRACE
return conn
}
// Init inits connection writer with json config.
// json config only need key "level".
func (log *ConnLogger) Init(jsonconfig string) error {
json := jsoniter.ConfigCompatibleWithStandardLibrary
err := json.Unmarshal([]byte(jsonconfig), log)
if err != nil {
return fmt.Errorf("Unable to parse JSON: %v", err)
}
log.NewWriterLogger(&connWriter{
ReconnectOnMsg: log.ReconnectOnMsg,
Reconnect: log.Reconnect,
Net: log.Net,
Addr: log.Addr,
}, log.Level)
return nil
}
// Flush does nothing for this implementation
func (log *ConnLogger) Flush() {
}
// GetName returns the default name for this implementation
func (log *ConnLogger) GetName() string {
return "conn"
}
// ReleaseReopen causes the ConnLogger to reconnect to the server
func (log *ConnLogger) ReleaseReopen() error {
return log.out.(*connWriter).releaseReopen()
}
func init() {
Register("conn", NewConn)
}
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