itdoxy-lab/modules/log/event_writer_conn.go

112 lines
2.0 KiB
Go

// Copyright 2023 The Gitea Authors. All rights reserved.
// SPDX-License-Identifier: MIT
package log
import (
"io"
"net"
)
type WriterConnOption struct {
Addr string
Protocol string
Reconnect bool
ReconnectOnMsg bool
}
type eventWriterConn struct {
*EventWriterBaseImpl
connWriter connWriter
}
var _ EventWriter = (*eventWriterConn)(nil)
func NewEventWriterConn(writerName string, writerMode WriterMode) EventWriter {
w := &eventWriterConn{EventWriterBaseImpl: NewEventWriterBase(writerName, "conn", writerMode)}
opt := writerMode.WriterOption.(WriterConnOption)
w.connWriter = connWriter{
ReconnectOnMsg: opt.ReconnectOnMsg,
Reconnect: opt.Reconnect,
Net: opt.Protocol,
Addr: opt.Addr,
}
w.OutputWriteCloser = &w.connWriter
return w
}
func init() {
RegisterEventWriter("conn", NewEventWriterConn)
}
// below is copied from old code
type connWriter struct {
innerWriter io.WriteCloser
ReconnectOnMsg bool
Reconnect bool
Net string `json:"net"`
Addr string `json:"addr"`
}
var _ io.WriteCloser = (*connWriter)(nil)
// 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
}