Golang Logger.Println方法代码示例

func acceptConn(conn net.Conn, l log.Logger) {
	l.Println("Success: Connection accepted from ", conn.RemoteAddr())
	fmt.Println("Success: Connection accepted from ", conn.RemoteAddr())
	for {
		data := make([]byte, 4096)
		n, err := conn.Read(data)

		if err != nil {
			fmt.Println("Error while reading from connection: ", err.Error())
			return
		}

		fmt.Println("Number of bytes read: ", n)
		convertData(data, n)

	}

	// Handle timeout?!
	/*
		err := conn.Close()
		if err != nil {
			l.Println(err.Error())
		} else {
			l.Println("Connection closed.")
			fmt.Println("Connection closed.")
		}*/
}

// pring write message into logger. If console is enabled, write into too
func (l Logger) print(loggerElement *log.Logger, message ...interface{}) {
	data := append([]interface{}{getInfo()}, message...)
	loggerElement.Println(data...)
	if l.writeConsole {
		log.Println(data...)
	}
}

// ZmqPubSubProxy Implements a many-to-many device on a zmq PUB-SUB connection
func ZmqPubSubProxy(host string, portIn int, portOut int, logger *log.Logger) {
	xsub, _ := zmq.NewSocket(zmq.SUB)
	xpub, _ := zmq.NewSocket(zmq.PUB)

	defer xsub.Close()
	defer xpub.Close()

	addrIn := fmt.Sprintf("tcp://*:%d", portIn)
	addrOut := fmt.Sprintf("tcp://*:%d", portOut)

	logger.Println("ZMQ XSUB on", addrIn)
	xsub.Bind(addrIn)
	xsub.SetSubscribe("")

	logger.Println("ZMQ XPUB on", addrOut)
	xpub.Bind(addrOut)

	poller := zmq.NewPoller()
	poller.Add(xsub, zmq.POLLIN)

	for {
		// keep looping
		sockets, _ := poller.Poll(5 * time.Second)
		for _, socket := range sockets {
			switch s := socket.Socket; s {
			case xsub:
				ZmqSendMulti(xpub, ZmqRecvMulti(s))
			}
		}
	}
}

func RegisterData(params martini.Params, l *log.Logger, db *sql.DB) (int, string) {
	key := params["key"]
	value := params["value"]
	l.Println(key, value)

	tx, err := db.Begin()
	if err != nil {
		log.Fatal(err)
	}
	stmt, err := tx.Prepare("insert into foo(id, name) values(?, ?)")
	if err != nil {
		log.Fatal(err)
	}
	defer stmt.Close()

	for i := 0; i < 10; i++ {
		_, err = stmt.Exec(i, fmt.Sprintf("[%s = %s] ねぷねぷのぷりん%03d", key, value, i))
		if err != nil {
			log.Fatal(err)
		}
	}
	tx.Commit()

	return 200, "Hello!" + value
}

func Register(consulURL string, logger *log.Logger, service *Service) error {
	var httpresponse *http.Response
	var err error
	var buf []byte

	buf, err = json.Marshal(service)
	if err != nil {
		log.Println(err.Error())
		return err
	}

	body := bytes.NewBuffer(buf)
	log.Println(body.String())

	httpresponse, err = http.Post(consulURL+REGISTER, "application/json", body)
	if err != nil {
		logger.Println(err.Error())
		return err
	}

	logger.Printf("register status code: %d\n", httpresponse.StatusCode)
	if httpresponse.StatusCode != 200 {
		return errors.New("register: invalid status code " + httpresponse.Status)
	}
	return err
}

func deleteUnneededFiles(srpcClient *srpc.Client, subFS *filesystem.FileSystem,
	imgFS *filesystem.FileSystem, logger *log.Logger) bool {
	startTime := showStart("compute early files to delete")
	pathsToDelete := make([]string, 0)
	imgHashToInodesTable := imgFS.HashToInodesTable()
	imgFilenameToInodeTable := imgFS.FilenameToInodeTable()
	for pathname, inum := range subFS.FilenameToInodeTable() {
		if inode, ok := subFS.InodeTable[inum].(*filesystem.RegularInode); ok {
			if inode.Size > 0 {
				if _, ok := imgHashToInodesTable[inode.Hash]; !ok {
					pathsToDelete = append(pathsToDelete, pathname)
				}
			} else {
				if _, ok := imgFilenameToInodeTable[pathname]; !ok {
					pathsToDelete = append(pathsToDelete, pathname)
				}
			}
		}
	}
	showTimeTaken(startTime)
	if len(pathsToDelete) < 1 {
		return false
	}
	updateRequest := sub.UpdateRequest{
		Wait:          true,
		PathsToDelete: pathsToDelete}
	var updateReply sub.UpdateResponse
	startTime = showStart("Subd.Update() for early files to delete")
	err := client.CallUpdate(srpcClient, updateRequest, &updateReply)
	showTimeTaken(startTime)
	if err != nil {
		logger.Println(err)
	}
	return true
}

// Goroutine to handle transmitting packets from one socket to another:
func (c *conn) xmit(r io.Reader, w io.Writer, stop chan bool, logger *log.Logger) {
	buffer := make([]byte, buffer_size)
	for {
		// 5 second read deadline so that we don't get lots of CLOSE_WAIT sockets:
		r.(*net.TCPConn).SetReadDeadline(time.Now().Add(time.Millisecond * time.Duration(5000)))
		rn, err := r.Read(buffer)
		if err != nil {
			if c.handleError(err, logger) {
				continue
			} else {
				break
			}
		}

		_, err = w.Write(buffer[:rn])
		if err != nil {
			if c.handleError(err, logger) {
				continue
			} else {
				break
			}
		}
	}

	stop <- true
	if verbose {
		logger.Println("stopped")
	}
}

func PurgeURL(url string, log *log.Logger) error {
	timeout := time.Duration(2 * time.Second)
	client := &http.Client{
		Timeout: timeout,
	}

	// Invalidate the file
	req, err := http.NewRequest("PURGE", url, nil)
	if err != nil {
		log.Println("Unable to purge " + url + ": " + err.Error())
		return err
	}

	resp, err := client.Do(req)
	if err == nil {
		defer resp.Body.Close()
	}

	if err != nil {
		log.Println("Unable to purge " + url + ": " + err.Error())
		return err
	}

	log.Println("Purging " + url + ": " + resp.Status)

	return nil
}

func doSnapshot(logger *log.Logger, params martini.Params, r render.Render) {
	lang := params["language"]

	// levelDBへ保存
	level, err := leveldb.Open("snapshot", &db.Options{})
	if err != nil {
		r.Error(400)
	}
	defer level.Close()

	key := createSnapshotKey(lang, time.Now())
	logger.Println("key: ", key)
	if _, err := level.Get([]byte(key), &db.ReadOptions{}); err != nil {
		res, err := http.Get(fmt.Sprintf(gitHubStarURL, lang))
		if err != nil {
			r.Error(400)
		}
		data, err := ioutil.ReadAll(res.Body)
		if err != nil {
			r.Error(400)
		}
		if err := level.Set([]byte(key), data, &db.WriteOptions{}); err != nil {
			r.Error(400)
		}
	}

	r.JSON(200, nil)
}

func NewContext(
	localStoragePath string,
	args []string,
	logger *log.Logger,
	fatal *log.Logger,
) (c G5CLIExecutionContext) {
	l := local.New(localStoragePath)

	if !l.IsPersisted() {
		logger.Println("No locally cached data. Enhance...")

		if err := g5hub.PopulateLocalStorage(l); err != nil {
			fatal.Printf(err.Error() + "\n")
			os.Exit(1)
		}

		l.Persist()
	}

	if l.ShouldNag() {
		l.LastNagged = time.Now()
		l.Persist()
		layout := "Mon, 01/02/06"
		s := l.LastUpdated.Format(layout)
		logger.Printf("Your last update was %v. You should consider running the update command. I'll nag you again soon.\n", s)
	}

	return G5CLIExecutionContext{
		LocalStorage: l,
		Args:         args,
		Logger:       logger,
		Fatal:        fatal,
		Heroku:       CLIHerokuExecutor{SuccessLogger: logger, ErrorLogger: fatal},
	}
}

func waitForNotifyEvents(watcher *fsnotify.Watcher, pathname string,
	channel chan<- io.ReadCloser, logger *log.Logger) {
	if file, err := os.Open(pathname); err == nil {
		channel <- file
	}
	for {
		select {
		case event, ok := <-watcher.Event:
			if !ok {
				return
			}
			if event.Name != pathname {
				continue
			}
			if file, err := os.Open(pathname); err != nil {
				if os.IsNotExist(err) {
					continue
				}
				if logger != nil {
					logger.Printf("Error opening file: %s: %s\n", pathname, err)
				}
			} else {
				channel <- file
			}
		case err, ok := <-watcher.Error:
			if !ok {
				return
			}
			logger.Println("Error with watcher:", err)
		}
	}
}

func PostIdeaHandler(req *http.Request, render render.Render, log *log.Logger) {
	log.Println("Receive post data.")
	name := req.FormValue("name")
	email := req.FormValue("email")
	link := req.FormValue("link")
	content := req.FormValue("content")
	log.Println("Name: " + name)
	log.Println("Email: " + email)
	log.Println("Link: " + link)
	log.Println("Content: " + content)
	if len(name) == 0 {
		render.JSON(400, map[string]interface{}{"error": 1, "message": "Empty name."})
		return
	}
	if len(email) == 0 {
		render.JSON(400, map[string]interface{}{"error": 2, "message": "Empty email."})
		return
	}
	if len(content) == 0 {
		render.JSON(400, map[string]interface{}{"error": 3, "message": "Empty content."})
		return
	}
	AddIdea(name, email, link, content)
	render.JSON(200, map[string]interface{}{"error": 0})
}

func (p *proberType) proberLoop(defaultProbeInterval uint, logger *log.Logger) {
	// Set the initial probe interval to the global default, if less than the
	// interval for this prober. The probe interval will be gradually increased
	// until the target probe interval is reached. This gives faster probing at
	// startup when higher resolution may be helpful, and then backs off.
	probeInterval := time.Duration(defaultProbeInterval) * time.Second
	if probeInterval > p.probeInterval {
		probeInterval = p.probeInterval
	}
	for {
		p.probeStartTime = time.Now()
		if err := p.prober.Probe(); err != nil {
			logger.Println(err)
		}
		probeDuration := time.Since(p.probeStartTime)
		p.probeTimeDistribution.Add(probeDuration)
		time.Sleep(probeInterval - probeDuration)
		// Increase the probe interval until the interval for this prober is
		// reached.
		if probeInterval < p.probeInterval {
			probeInterval += time.Duration(defaultProbeInterval) * time.Second
		}
		if probeInterval > p.probeInterval {
			probeInterval = p.probeInterval
		}
	}
}

func incomingEmail(tc *twilio.Client, req *http.Request, log *log.Logger) {
	if err := verifyMailgunSig(
		req.FormValue("token"),
		req.FormValue("timestamp"),
		req.FormValue("signature"),
	); err != nil {
		log.Println("Mailgun request verification failed:", err)
		return
	}

	dkim := req.FormValue("X-Mailgun-Spf")
	spf := req.FormValue("X-Mailgun-Dkim-Check-Result")
	sender := req.FormValue("sender")
	if dkim != "Pass" || spf != "Pass" || sender != emailTo {
		log.Printf("Email verification failed: SPF: %s, DKIM: %s, addr: %s", spf, dkim, sender)
		return
	}

	params := twilio.MessageParams{Body: req.FormValue("stripped-text")}
	dest := strings.SplitN(req.FormValue("recipient"), "@", 2)[0]
	_, _, err := tc.Messages.Send(smsFrom, dest, params)
	if err != nil {
		log.Println("SMS send failed:", err)
		return
	}
	log.Println("SMS sent to", dest)
}

func LockMetrics(logger *log.Logger, dbs []string, HOSTNAME string, dbConn *sql.DB) []Metric {
	logger.Println("get lock metrics 3.1")

	var metrics = make([]Metric, 0)

	for i := 0; i < len(dbs); i++ {
		metric := Metric{}

		var lockCount int64
		var lockType, lockMode string
		err := dbConn.QueryRow("select locktype,mode, count(*) from pg_locks, pg_database where pg_locks.database = pg_database.oid and pg_database.datname = '"+dbs[i]+"' group by pg_locks.locktype, pg_locks.mode").Scan(&lockType, &lockMode, &lockCount)
		if err != nil {
			logger.Println("error: " + err.Error())
			return metrics
		}

		metric.Hostname = HOSTNAME
		metric.MetricName = "lock_count"
		metric.Units = "count"
		metric.Value = lockCount
		metric.LockType = lockType
		metric.LockMode = lockMode
		metric.DatabaseName = dbs[i]
		metrics = append(metrics, metric)
	}

	return metrics

}