mirror of
https://github.com/cubefs/cubefs.git
synced 2026-08-02 02:00:56 +00:00
111 lines
3.0 KiB
Go
111 lines
3.0 KiB
Go
// Copyright 2018 The CubeFS Authors.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
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// implied. See the License for the specific language governing
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// permissions and limitations under the License.
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package flashnode
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import (
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"bufio"
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"fmt"
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"io"
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"net"
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"time"
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"github.com/cubefs/cubefs/proto"
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"github.com/cubefs/cubefs/util/exporter"
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"github.com/cubefs/cubefs/util/log"
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)
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// NewServer creates a new flash node instance.
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func NewServer() *FlashNode {
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return &FlashNode{}
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}
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// StartTcpService binds and listens to the specified port.
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func (f *FlashNode) startTcpServer() (err error) {
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f.netListener, err = net.Listen("tcp", ":"+f.listen)
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if err != nil {
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return
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}
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go func() {
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defer f.netListener.Close()
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var latestAlarm time.Time
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for {
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conn, err1 := f.netListener.Accept()
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select {
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case <-f.stopCh:
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log.LogWarnf("http server stopped")
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return
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default:
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}
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if err1 != nil {
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log.LogErrorf("action[startTcpServer] failed to accept, err:%s", err.Error())
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// Alarm only once at 1 minute
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if time.Since(latestAlarm) > time.Minute {
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warnMsg := fmt.Sprintf("SERVER ACCEPT CONNECTION FAILED!\n"+
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"Failed on accept connection from %v and will retry after 10s.\n"+
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"Error message: %s", f.netListener.Addr(), err.Error())
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exporter.Warning(warnMsg)
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latestAlarm = time.Now()
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}
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time.Sleep(time.Second)
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continue
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}
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go f.serveConn(conn)
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}
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}()
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log.LogInfof("start tcp server over...")
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return
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}
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func (f *FlashNode) stopServer() {
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f.netListener.Close()
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}
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// serveConn Read data from the specified tcp connection until the connection is closed by the remote or the tcp service is down.
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func (f *FlashNode) serveConn(conn net.Conn) {
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defer conn.Close()
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c := conn.(*net.TCPConn)
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_ = c.SetKeepAlive(true) // Ignore error
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_ = c.SetNoDelay(true) // Ignore error
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remoteAddr := conn.RemoteAddr().String()
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connReader := bufio.NewReader(c)
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for {
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select {
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case <-f.stopCh:
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return
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default:
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}
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p := NewPacket()
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_ = c.SetReadDeadline(time.Now().Add(time.Second * ServerTimeout))
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if err := p.ReadFromReader(connReader); err != nil {
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if err != io.EOF {
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log.LogError("serve FlashNode: ", err.Error())
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}
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return
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}
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if err := f.preHandle(conn, p); err != nil {
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logContent := fmt.Sprintf("preHandle %v.", p.LogMessage(p.GetOpMsg(), remoteAddr, p.StartT, err))
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log.LogWarnf(logContent)
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p.PacketErrorWithBody(proto.OpErr, ([]byte)(err.Error()))
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_ = respondToClient(conn, p)
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continue
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}
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if err := f.handlePacket(conn, p, remoteAddr); err != nil {
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log.LogErrorf("serve handlePacket fail: %v", err)
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}
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}
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}
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