Golang Logger.Infof方法代碼示例

func NewReplicator(
	manifest manifest.Manifest,
	logger logging.Logger,
	nodes []types.NodeName,
	active int,
	store kp.Store,
	labeler Labeler,
	health checker.ConsulHealthChecker,
	threshold health.HealthState,
	lockMessage string,
	timeout time.Duration,
) (Replicator, error) {
	if active < 1 {
		return replicator{}, util.Errorf("Active must be >= 1, was %d", active)
	}
	if active > 50 {
		logger.Infof("Number of concurrent updates (%v) is greater than 50, reducing to 50", active)
		active = 50
	}
	return replicator{
		manifest:    manifest,
		logger:      logger,
		nodes:       nodes,
		active:      active,
		store:       store,
		labeler:     labeler,
		health:      health,
		threshold:   threshold,
		lockMessage: lockMessage,
		timeout:     timeout,
	}, nil
}

func schedule(client client.Client, logger logging.Logger) {
	m, err := manifest.FromPath(*manifestFile)
	if err != nil {
		logger.Fatalf("Could not read manifest: %s", err)
	}

	podUniqueKey, err := client.Schedule(m, types.NodeName(*node))
	if err != nil {
		logger.Fatalf("Could not schedule: %s", err)
	}

	output := struct {
		PodID        types.PodID        `json:"pod_id"`
		PodUniqueKey types.PodUniqueKey `json:"pod_unique_key"`
	}{
		PodID:        m.ID(),
		PodUniqueKey: podUniqueKey,
	}

	outBytes, err := json.Marshal(output)
	if err != nil {
		logger.Infof("Scheduled pod with key: %s", podUniqueKey)
		return
	}

	fmt.Println(string(outBytes))
}

func createHelloUUIDPod(dir string, port int, logger logging.Logger) (types.PodUniqueKey, error) {
	signedManifestPath, err := writeHelloManifest(dir, fmt.Sprintf("hello-uuid-%d.yaml", port), port)
	if err != nil {
		return "", err
	}

	logger.Infoln("Scheduling uuid pod")
	cmd := exec.Command("p2-schedule", "--uuid-pod", signedManifestPath)
	stdout := bytes.Buffer{}
	stderr := bytes.Buffer{}
	cmd.Stdout, cmd.Stderr = &stdout, &stderr
	err = cmd.Run()
	if err != nil {
		fmt.Println(stderr.String())
		return "", err
	}

	var out schedule.Output
	err = json.Unmarshal(stdout.Bytes(), &out)
	if err != nil {
		return "", util.Errorf("Scheduled uuid pod but couldn't parse uuid from p2-schedule output: %s", err)
	}

	logger.Infof("Scheduled uuid pod %s", out.PodUniqueKey)
	return out.PodUniqueKey, nil
}

func verifyLegacyPod(errCh chan error, tempDir string, config *preparer.PreparerConfig, services []string, logger logging.Logger) {
	defer close(errCh)
	// Schedule a "legacy" hello pod using a replication controller
	rcID, err := createHelloReplicationController(tempDir)
	if err != nil {
		errCh <- fmt.Errorf("Could not create hello pod / rc: %s", err)
		return
	}
	logger.Infof("Created RC #%s for hello\n", rcID)

	err = waitForPodLabeledWithRC(klabels.Everything().Add(rc.RCIDLabel, klabels.EqualsOperator, []string{rcID.String()}), rcID)
	if err != nil {
		errCh <- fmt.Errorf("Failed waiting for pods labeled with the given RC: %v", err)
		return
	}
	err = verifyHelloRunning("", logger)
	if err != nil {
		errCh <- fmt.Errorf("Couldn't get hello running: %s", err)
		return
	}
	err = verifyHealthChecks(config, services)
	if err != nil {
		errCh <- fmt.Errorf("Could not get health check info from consul: %s", err)
		return
	}
}

func verifyProcessExit(errCh chan error, tempDir string, logger logging.Logger) {
	defer close(errCh)

	// Schedule a uuid pod
	podUniqueKey, err := createHelloUUIDPod(tempDir, 43772, logger)
	if err != nil {
		errCh <- fmt.Errorf("Could not schedule UUID hello pod: %s", err)
		return
	}

	logger = logger.SubLogger(logrus.Fields{
		"pod_unique_key": podUniqueKey,
	})
	logger.Infoln("Scheduled hello instance on port 43772")

	err = verifyHelloRunning(podUniqueKey, logger)
	if err != nil {
		errCh <- fmt.Errorf("Couldn't get hello running as a uuid pod: %s", err)
		return
	}
	logger.Infoln("Hello instance launched")

	time.Sleep(3 * time.Second)

	logger.Infoln("Waiting for hello instance to listen on 43772")
	// now wait for the hello server to start running
	timeout := time.After(30 * time.Second)
	for {
		resp, err := http.Get("http://localhost:43772/")
		if err == nil {
			resp.Body.Close()
			break
		}

		select {
		case <-timeout:
			errCh <- fmt.Errorf("Hello didn't come up listening on 43772: %s", err)
			return
		default:
		}

		time.Sleep(1 * time.Second)
	}

	exitCode := rand.Intn(100) + 1
	logger.Infof("Causing hello on 43772 to exit with status %d", exitCode)
	// Make an http request to hello to make it exit with exitCode. We expect the http request to fail due
	// to the server exiting, so don't check for http errors.
	_, err = http.Get(fmt.Sprintf("http://localhost:43772/exit/%d", exitCode))
	if err == nil {
		// This is bad, it means the hello server didn't die and kill our request
		// in the middle
		errCh <- util.Errorf("Couldn't kill hello server with http request")
		return
	}

	urlError, ok := err.(*url.Error)
	if ok && urlError.Err == io.EOF {
		// This is good, it means the server died
	} else {
		errCh <- fmt.Errorf("Couldn't tell hello to die over http: %s", err)
		return
	}

	logger.Infoln("Checking for exit code in SQL database")
	finishService, err := podprocess.NewSQLiteFinishService(sqliteFinishDatabasePath, logging.DefaultLogger)
	if err != nil {
		errCh <- err
		return
	}

	var finishResult podprocess.FinishOutput
	timeout = time.After(30 * time.Second)
	for {
		finishResult, err = finishService.LastFinishForPodUniqueKey(podUniqueKey)
		if err == nil {
			break
		}

		select {
		case <-timeout:
			// Try to manually run the finish script in order to make debugging the test failure easier
			output, err := exec.Command("sudo", fmt.Sprintf("/var/service/hello-%s__hello__launch/finish", podUniqueKey), "1", "2").CombinedOutput()
			if err != nil {
				logger.WithError(err).Infoln("DEBUG: Debug attempt to run finish script failed")
			}

			logger.Infof("DEBUG: Output of direct execution of finish script: %s", string(output))

			errCh <- fmt.Errorf("Did not find a finish row by the deadline: %s", err)
			return
		default:
		}
	}

	if finishResult.PodUniqueKey != podUniqueKey {
		errCh <- fmt.Errorf("Expected finish result for '%s' but it was for '%s'", podUniqueKey, finishResult.PodUniqueKey)
		return
	}

//.........這裏部分代碼省略.........