Golang log.Info函数代码示例

func (self *ServerGroup) RemoveServer(zkConn zkhelper.Conn, addr string) error {
	zkPath := fmt.Sprintf("/zk/codis/db_%s/servers/group_%d/%s", self.ProductName, self.Id, addr)
	data, _, err := zkConn.Get(zkPath)
	if err != nil {
		return errors.Trace(err)
	}

	var s Server
	err = json.Unmarshal(data, &s)
	if err != nil {
		return errors.Trace(err)
	}
	log.Info(s)
	if s.Type == SERVER_TYPE_MASTER {
		return errors.Errorf("cannot remove master, use promote first")
	}

	err = zkConn.Delete(zkPath, -1)
	if err != nil {
		return errors.Trace(err)
	}

	// update server list
	for i := 0; i < len(self.Servers); i++ {
		if self.Servers[i].Addr == s.Addr {
			self.Servers = append(self.Servers[:i], self.Servers[i+1:]...)
			break
		}
	}

	// remove slave won't need proxy confirm
	err = NewAction(zkConn, self.ProductName, ACTION_TYPE_SERVER_GROUP_CHANGED, self, "", false)
	return errors.Trace(err)
}

func ForceRemoveDeadFence(zkConn zkhelper.Conn, productName string) error {
	proxies, err := ProxyList(zkConn, productName, func(p *ProxyInfo) bool {
		return p.State == PROXY_STATE_ONLINE
	})
	if err != nil {
		return errors.Trace(err)
	}
	fenceProxies, err := GetFenceProxyMap(zkConn, productName)
	if err != nil {
		return errors.Trace(err)
	}
	// remove online proxies's fence
	for _, proxy := range proxies {
		delete(fenceProxies, proxy.Addr)
	}

	// delete dead fence in zookeeper
	path := GetProxyFencePath(productName)
	for remainFence, _ := range fenceProxies {
		fencePath := filepath.Join(path, remainFence)
		log.Info("removing fence: ", fencePath)
		if err := zkhelper.DeleteRecursive(zkConn, fencePath, -1); err != nil {
			return errors.Trace(err)
		}
	}
	return nil
}

func (s *Server) registerSignal() {
	c := make(chan os.Signal, 1)
	signal.Notify(c, os.Interrupt, syscall.SIGTERM, os.Kill)
	go func() {
		<-c
		log.Info("ctrl-c or SIGTERM found, mark offline server")
		s.evtbus <- &killEvent{}
	}()
}

func initReal() {
	conn = zkhelper.NewConn()
	conf = &Config{
		proxyId:          "proxy_test",
		productName:      "test",
		zkAddr:           "192.168.28.191:2181",
		fact:             nil,
		proto:            "tcp4",
		provider:         "zookeeper",
		zkSessionTimeout: 30,
		zkReadTimeout:    30,
	}
	c := make(chan os.Signal, 1)
	signal.Notify(c, os.Interrupt, syscall.SIGTERM, syscall.SIGQUIT, os.Kill)
	go func() {
		<-c
		log.Info("ctrl-c or SIGTERM found, bye bye...")
		s.Close()
	}()
	go func() {
		log.Info(http.ListenAndServe("192.168.28.192:6060", nil))
	}()

	go func() {
		time.Sleep(10 * time.Second)
		zkConn, err := zkhelper.ConnectToZk(conf.zkAddr, 20000)
		if err != nil {
			log.Errorf("connect to zk:  %+v", errors.Trace(err))
		} else {
			err = models.SetProxyStatus(zkConn, conf.productName, conf.proxyId, models.PROXY_STATE_ONLINE)
			if err != nil {
				log.Errorf("set proxy error: %+v", errors.Trace(err))
			}
		}
		zkConn.Close()
	}()

	go func() {
		err := http.ListenAndServe("192.168.28.192:11001", nil)
		log.PanicError(err, "http debug server quit")
	}()

	s = New("192.168.28.192:19001", "192.168.28.192:11001", conf)
}

func (s *Session) Reset(c net.Conn, auth string, timeout int) {
	s.Conn.Reset(c)
	s.Ops = 0
	s.CreateUnix = time.Now().Unix()
	s.LastOpUnix = 0
	s.auth = auth
	s.authorized = false
	s.quit = false
	s.failed.Set(false)
	s.closed.Set(false)
	s.Conn.ReaderTimeout = time.Second * time.Duration(timeout)
	s.Conn.WriterTimeout = time.Second * 30
	log.Info("session [%p] reused: %s", s, s)
}

func (s *Server) SetMyselfOnline() error {
	log.Info("mark myself online")
	info := models.ProxyInfo{
		Id:    s.conf.proxyId,
		State: models.PROXY_STATE_ONLINE,
	}
	b, _ := json.Marshal(info)
	url := "http://" + s.conf.dashboardAddr + "/api/proxy"
	res, err := http.Post(url, "application/json", bytes.NewReader(b))
	if err != nil {
		return err
	}
	if res.StatusCode != 200 {
		return errors.New("response code is not 200")
	}
	return nil
}

func ForceRemoveLock(zkConn zkhelper.Conn, productName string) error {
	lockPath := fmt.Sprintf("/zk/codis/db_%s/LOCK", productName)
	children, _, err := zkConn.Children(lockPath)
	if err != nil && !zkhelper.ZkErrorEqual(err, zk.ErrNoNode) {
		return errors.Trace(err)
	}

	for _, c := range children {
		fullPath := path.Join(lockPath, c)
		log.Info("deleting..", fullPath)
		err := zkConn.Delete(fullPath, 0)
		if err != nil {
			return errors.Trace(err)
		}
	}

	return nil
}

func (s *Server) serve() {
	defer s.close()

	if !s.waitOnline() {
		return
	}

	s.rewatchNodes()

	for i := 0; i < router.MaxSlotNum; i++ {
		s.fillSlot(i)
	}
	log.Info("proxy is serving")
	go func() {
		defer s.close()
		s.handleConns()
	}()

	s.loopEvents()
}

func TestRefreshZkConn(t *testing.T) {
	initReal()
	time.Sleep(50 * time.Second)
	if s != nil {
		//s.top.RefreshZkConn()
		pi, err := s.topo.GetProxyInfo(s.info.Id)
		if err != nil {
			log.Error(err)
		} else {
			log.Infof("get proxy: %+v", pi)
		}

		log.Info("begin get")
		/*
			time.Sleep(15 * time.Second)
			content, err := s.top.WatchChildren(models.GetWatchActionPath(s.top.ProductName), s.evtbus)
			if err != nil {
				log.Error(fmt.Sprintf(errors.ErrorStack(err)+" zk error %+v", s.top.IsFatalErr(err)))
			} else {
				log.Infof("watch action: %+v", content)
			}
			e := <-s.evtbus
			log.Infof("event: %+v", e)
		*/

		for {
			pi, err = s.topo.GetProxyInfo(s.info.Id)
			if err != nil {
				log.Error(err)
			} else {
				log.Infof("get proxy: %+v", pi)
			}
			time.Sleep(5 * time.Second)
		}
	}
}

func SetProxyStatus(zkConn zkhelper.Conn, productName string, proxyName string, status string) error {
	p, err := GetProxyInfo(zkConn, productName, proxyName)
	if err != nil {
		return errors.Trace(err)
	}

	if status != PROXY_STATE_ONLINE && status != PROXY_STATE_MARK_OFFLINE && status != PROXY_STATE_OFFLINE {
		return errors.Errorf("%v, %s", ErrUnknownProxyStatus, status)
	}

	// check slot status before setting proxy online
	if status == PROXY_STATE_ONLINE {
		slots, err := Slots(zkConn, productName)
		if err != nil {
			return errors.Trace(err)
		}
		for _, slot := range slots {
			if slot.State.Status != SLOT_STATUS_ONLINE && slot.State.Status != SLOT_STATUS_MIGRATE {
				return errors.Errorf("slot %v is not online or migrate", slot)
			}
			if slot.GroupId == INVALID_ID {
				return errors.Errorf("slot %v has invalid group id", slot)
			}
		}
	}

	p.State = status
	b, _ := json.Marshal(p)

	_, err = zkConn.Set(path.Join(GetProxyPath(productName), proxyName), b, -1)
	if err != nil {
		return errors.Trace(err)
	}

	if status == PROXY_STATE_MARK_OFFLINE {
		// wait for the proxy down
		for {
			_, _, c, err := zkConn.GetW(path.Join(GetProxyPath(productName), proxyName))
			if zkhelper.ZkErrorEqual(err, zk.ErrNoNode) {
				return nil
			} else if err != nil {
				return errors.Trace(err)
			}
			<-c
			info, err := GetProxyInfo(zkConn, productName, proxyName)
			log.Info("mark_offline, check proxy status:", proxyName, info, err)
			if zkhelper.ZkErrorEqual(err, zk.ErrNoNode) {
				log.Info("shutdown proxy successful")
				return nil
			} else if err != nil {
				return errors.Trace(err)
			}
			if info.State == PROXY_STATE_OFFLINE {
				log.Infof("proxy: %s offline success!", proxyName)
				return nil
			}
		}
	}

	return nil
}

func main() {
	fmt.Print(banner)

	args, err := docopt.Parse(usage, nil, true, "codis proxy v0.1", true)
	if err != nil {
		fmt.Println(err)
		os.Exit(1)
	}

	// set config file
	if args["-c"] != nil {
		configFile = args["-c"].(string)
	}

	var maxFileFrag = 10
	var maxFragSize int64 = bytesize.GB * 1
	if s, ok := args["--log-filesize"].(string); ok && s != "" {
		v, err := bytesize.Parse(s)
		if err != nil {
			log.PanicErrorf(err, "invalid max log file size = %s", s)
		}
		maxFragSize = v
	}

	// set output log file
	if s, ok := args["-L"].(string); ok && s != "" {
		f, err := log.NewRollingFile(s, maxFileFrag, maxFragSize)
		if err != nil {
			log.PanicErrorf(err, "open rolling log file failed: %s", s)
		} else {
			defer f.Close()
			log.StdLog = log.New(f, "")
		}
	}
	log.SetLevel(log.LEVEL_INFO)

	// set log level
	if s, ok := args["--log-level"].(string); ok && s != "" {
		setLogLevel(s)
	}

	// set cpu
	if args["--cpu"] != nil {
		cpus, err = strconv.Atoi(args["--cpu"].(string))
		if err != nil {
			log.PanicErrorf(err, "parse cpu number failed")
		}
	}

	// set addr
	if args["--addr"] != nil {
		addr = args["--addr"].(string)
	}

	// set http addr
	if args["--http-addr"] != nil {
		httpAddr = args["--http-addr"].(string)
	}

	checkUlimit(1024)
	runtime.GOMAXPROCS(cpus)

	http.HandleFunc("/setloglevel", handleSetLogLevel)
	go http.ListenAndServe(httpAddr, nil)

	log.Info("running on ", addr)
	conf, err := router.LoadConf(configFile)
	if err != nil {
		log.PanicErrorf(err, "load config failed")
	}
	s, err := router.NewServer(addr, httpAddr, conf)
	if err != nil {
		log.PanicErrorf(err, "create new server failed")
	}
	if err := s.Serve(); err != nil {
		log.PanicErrorf(err, "serve failed")
	}
	panic("exit")
}

func NewServer(addr string, debugVarAddr string, conf *Config) (*Server, error) {
	log.Infof("start proxy with config: %+v", conf)
	s := &Server{
		evtbus:        make(chan interface{}, 1000),
		conf:          conf,
		topo:          topology.NewTopo(conf.productName, conf.zkAddr, conf.fact, conf.provider),
		pool:          make(map[string]*SharedBackendConn),
		lastActionSeq: -1,
	}
	for i := 0; i < MaxSlotNum; i++ {
		s.slots[i] = &Slot{Id: i}
	}

	proxyHost := strings.Split(addr, ":")[0]
	debugHost := strings.Split(debugVarAddr, ":")[0]

	hostname, err := os.Hostname()
	if err != nil {
		log.PanicErrorf(err, "get host name failed")
	}
	if proxyHost == "0.0.0.0" || strings.HasPrefix(proxyHost, "127.0.0.") {
		proxyHost = hostname
	}
	if debugHost == "0.0.0.0" || strings.HasPrefix(debugHost, "127.0.0.") {
		debugHost = hostname
	}

	s.info.Id = conf.proxyId
	s.info.State = models.PROXY_STATE_OFFLINE
	s.info.Addr = proxyHost + ":" + strings.Split(addr, ":")[1]
	s.info.DebugVarAddr = debugHost + ":" + strings.Split(debugVarAddr, ":")[1]
	s.info.Pid = os.Getpid()
	s.info.StartAt = time.Now().String()

	log.Infof("proxy info = %+v", s.info)

	if l, err := net.Listen(conf.proto, addr); err != nil {
		return nil, errors.Trace(err)
	} else {
		s.Listener = l
	}

	stats.Publish("evtbus", stats.StringFunc(func() string {
		return strconv.Itoa(len(s.evtbus))
	}))

	stats.PublishJSONFunc("router", func() string {
		var m = make(map[string]interface{})
		m["ops"] = cmdstats.requests.Get()
		m["cmds"] = getAllOpStats()
		m["info"] = s.info
		m["build"] = map[string]interface{}{
			"version": utils.Version,
			"compile": utils.Compile,
		}
		b, _ := json.Marshal(m)
		return string(b)
	})

	s.RegisterAndWait()

	_, err = s.topo.WatchChildren(models.GetWatchActionPath(conf.productName), s.evtbus)
	if err != nil {
		log.PanicErrorf(err, "watch children failed")
	}

	for i := 0; i < MaxSlotNum; i++ {
		s.fillSlot(i, false)
	}

	go s.handleTopoEvent()

	log.Info("proxy start ok")

	return s, nil
}

func main() {
	args, err := docopt.Parse(usage, nil, true, utils.Version, true)
	if err != nil {
		fmt.Println(err)
		os.Exit(1)
	}
	fmt.Print(banner)

	// set config file
	if args["-c"] != nil {
		configFile = args["-c"].(string)
	}

	var maxFileFrag = 10000000
	var maxFragSize int64 = bytesize.GB * 1
	if s, ok := args["--log-filesize"].(string); ok && s != "" {
		v, err := bytesize.Parse(s)
		if err != nil {
			log.PanicErrorf(err, "invalid max log file size = %s", s)
		}
		maxFragSize = v
	}

	// set output log file
	if s, ok := args["-L"].(string); ok && s != "" {
		f, err := log.NewRollingFile(s, maxFileFrag, maxFragSize)
		if err != nil {
			log.PanicErrorf(err, "open rolling log file failed: %s", s)
		} else {
			defer f.Close()
			log.StdLog = log.New(f, "")
		}
	}
	log.SetLevel(log.LEVEL_INFO)
	log.SetFlags(log.Flags() | log.Lshortfile)

	// set log level
	if s, ok := args["--log-level"].(string); ok && s != "" {
		setLogLevel(s)
	}
	cpus = runtime.NumCPU()
	// set cpu
	if args["--cpu"] != nil {
		cpus, err = strconv.Atoi(args["--cpu"].(string))
		if err != nil {
			log.PanicErrorf(err, "parse cpu number failed")
		}
	}

	// set addr
	if args["--addr"] != nil {
		addr = args["--addr"].(string)
	}

	// set http addr
	if args["--http-addr"] != nil {
		httpAddr = args["--http-addr"].(string)
	}

	checkUlimit(1024)
	runtime.GOMAXPROCS(cpus)

	http.HandleFunc("/setloglevel", handleSetLogLevel)
	go func() {
		err := http.ListenAndServe(httpAddr, nil)
		log.PanicError(err, "http debug server quit")
	}()
	log.Info("running on ", addr)
	conf, err := proxy.LoadConf(configFile)
	if err != nil {
		log.PanicErrorf(err, "load config failed")
	}

	c := make(chan os.Signal, 1)
	signal.Notify(c, os.Interrupt, syscall.SIGTERM, os.Kill)

	s := proxy.New(addr, httpAddr, conf)
	defer s.Close()

	stats.PublishJSONFunc("router", func() string {
		var m = make(map[string]interface{})
		m["ops"] = router.OpCounts()
		m["cmds"] = router.GetAllOpStats()
		m["info"] = s.Info()
		m["build"] = map[string]interface{}{
			"version": utils.Version,
			"compile": utils.Compile,
		}
		b, _ := json.Marshal(m)
		return string(b)
	})

	go func() {
		<-c
		log.Info("ctrl-c or SIGTERM found, bye bye...")
		s.Close()
	}()

	time.Sleep(time.Second)
	if err := s.SetMyselfOnline(); err != nil {
//.........这里部分代码省略.........