Golang Statter.TimingDuration方法代碼示例

func removeInvalidCerts(csvFilename string, dbMap *gorp.DbMap, stats statsd.Statter, statsRate float32) {
	file, err := os.Open(csvFilename)
	cmd.FailOnError(err, "Could not open the file for reading")
	csvReader := csv.NewReader(file)

	for {
		record, err := csvReader.Read()
		if err == io.EOF {
			break
		} else if err != nil {
			fmt.Println("Error:", err)
			return
		}

		identifierData := core.IdentifierData{
			CertSHA1: record[0],
		}
		externalCert := core.ExternalCert{
			SHA1: record[0],
		}

		deleteStart := time.Now()
		_, err = dbMap.Delete(&identifierData)
		stats.TimingDuration("ExistingCert.DomainDeleteTime", time.Since(deleteStart), statsRate)
		_, err = dbMap.Delete(&externalCert)
		stats.TimingDuration("ExistingCert.CertDeleteTime", time.Since(deleteStart), statsRate)
		stats.Inc("ExistingCert.CertsDeleted", 1, statsRate)
	}
}

func addIdentifiers(csvFilename string, dbMap *gorp.DbMap, stats statsd.Statter, statsRate float32) {
	file, err := os.Open(csvFilename)
	cmd.FailOnError(err, "Could not open the file for reading")
	csvReader := csv.NewReader(file)

	for {
		record, err := csvReader.Read()
		if err == io.EOF {
			break
		} else if err != nil {
			fmt.Println("Error:", err)
			return
		}

		identifierData := core.IdentifierData{
			ReversedName: record[1],
			CertSHA1:     record[0],
		}

		importStart := time.Now()
		err = dbMap.Insert(&identifierData)
		stats.TimingDuration("ExistingCert.DomainImportTime", time.Since(importStart), statsRate)
		stats.Inc("ExistingCert.DomainsImported", 1, statsRate)
	}
}

func addCerts(csvFilename string, dbMap *gorp.DbMap, stats statsd.Statter, statsRate float32) {
	file, err := os.Open(csvFilename)
	cmd.FailOnError(err, "Could not open the file for reading")
	csvReader := csv.NewReader(file)

	for {
		record, err := csvReader.Read()
		if err == io.EOF {
			break
		} else if err != nil {
			fmt.Println("Error:", err)
			return
		}

		notAfter, err := time.Parse(datestampFormat, record[3])
		spkiBytes, err := hex.DecodeString(record[4])
		certDER, err := hex.DecodeString(record[7])

		externalCert := core.ExternalCert{
			SHA1:     record[0],
			Issuer:   record[1],
			Subject:  record[2],
			NotAfter: notAfter,
			SPKI:     spkiBytes,
			Valid:    record[5] == "1",
			EV:       record[6] == "1",
			CertDER:  certDER,
		}

		importStart := time.Now()
		err = dbMap.Insert(&externalCert)
		stats.TimingDuration("ExistingCert.CertImportTime", time.Since(importStart), statsRate)
		stats.Inc("ExistingCert.CertsImported", 1, statsRate)
	}
}

func validateContacts(contacts []*core.AcmeURL, resolver core.DNSResolver, stats statsd.Statter) (err error) {
	for _, contact := range contacts {
		switch contact.Scheme {
		case "tel":
			continue
		case "mailto":
			rtt, err := validateEmail(contact.Opaque, resolver)
			stats.TimingDuration("RA.DNS.RTT.MX", rtt, 1.0)
			stats.Inc("RA.DNS.Rate", 1, 1.0)
			if err != nil {
				return err
			}
		default:
			err = core.MalformedRequestError(fmt.Sprintf("Contact method %s is not supported", contact.Scheme))
			return
		}
	}

	return
}

func timeDelivery(d amqp.Delivery, stats statsd.Statter, deliveryTimings map[string]time.Time) {
	// If d is a call add to deliveryTimings and increment openCalls, if it is a
	// response then get time.Since original call from deliveryTiming, send timing metric, and
	// decrement openCalls, in both cases send the gauges RpcCallsOpen and RpcBodySize
	if d.ReplyTo != "" {
		openCalls++
		deliveryTimings[fmt.Sprintf("%s:%s", d.CorrelationId, d.ReplyTo)] = time.Now()
	} else {
		openCalls--
		rpcSent := deliveryTimings[fmt.Sprintf("%s:%s", d.CorrelationId, d.RoutingKey)]
		if rpcSent != *new(time.Time) {
			respTime := time.Since(rpcSent)
			delete(deliveryTimings, fmt.Sprintf("%s:%s", d.CorrelationId, d.RoutingKey))

			stats.TimingDuration(fmt.Sprintf("RpcCallTime.%s", d.Type), respTime, 1.0)
		}
	}

	stats.Gauge("RpcCallsOpen", openCalls, 1.0)
	stats.Gauge("RpcBodySize", int64(len(d.Body)), 1.0)
}

// HandlerTimer monitors HTTP performance and sends the details to StatsD.
func HandlerTimer(handler http.Handler, stats statsd.Statter) http.Handler {
	return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
		cStart := time.Now()
		openConnections++
		stats.Gauge("HttpConnectionsOpen", openConnections, 1.0)

		handler.ServeHTTP(w, r)

		openConnections--
		stats.Gauge("HttpConnectionsOpen", openConnections, 1.0)

		// (FIX: this doesn't seem to really work at catching errors...)
		state := "Success"
		for _, h := range w.Header()["Content-Type"] {
			if h == "application/problem+json" {
				state = "Error"
				break
			}
		}
		// set resp timing key based on success / failure
		stats.TimingDuration(fmt.Sprintf("HttpResponseTime.%s.%s", r.URL, state), time.Since(cStart), 1.0)
	})
}