Golang Logger.Info方法代碼示例

func newUaaClient(logger lager.Logger, clock clock.Clock, c *config.Config) uaa_client.Client {
	if c.RoutingApi.AuthDisabled {
		logger.Info("using-noop-token-fetcher")
		return uaa_client.NewNoOpUaaClient()
	}

	if c.OAuth.Port == -1 {
		logger.Fatal("tls-not-enabled", errors.New("GoRouter requires TLS enabled to get OAuth token"), lager.Data{"token-endpoint": c.OAuth.TokenEndpoint, "port": c.OAuth.Port})
	}

	tokenURL := fmt.Sprintf("https://%s:%d", c.OAuth.TokenEndpoint, c.OAuth.Port)

	cfg := &uaa_config.Config{
		UaaEndpoint:           tokenURL,
		SkipVerification:      c.OAuth.SkipSSLValidation,
		ClientName:            c.OAuth.ClientName,
		ClientSecret:          c.OAuth.ClientSecret,
		CACerts:               c.OAuth.CACerts,
		MaxNumberOfRetries:    c.TokenFetcherMaxRetries,
		RetryInterval:         c.TokenFetcherRetryInterval,
		ExpirationBufferInSec: c.TokenFetcherExpirationBufferTimeInSeconds,
	}

	uaaClient, err := uaa_client.NewClient(logger, cfg, clock)
	if err != nil {
		logger.Fatal("initialize-token-fetcher-error", err)
	}
	return uaaClient
}

// RemoveDesiredLRP deletes the DesiredLRPSchedulingInfo and the DesiredLRPRunInfo
// from the database. We delete DesiredLRPSchedulingInfo first because the system
// uses it to determine wheter the lrp is present. In the event that only the
// RunInfo fails to delete, the orphaned DesiredLRPRunInfo will be garbage
// collected later by convergence.
func (db *ETCDDB) RemoveDesiredLRP(logger lager.Logger, processGuid string) error {
	logger = logger.WithData(lager.Data{"process_guid": processGuid})
	logger.Info("starting")
	defer logger.Info("complete")

	_, schedulingInfoErr := db.client.Delete(DesiredLRPSchedulingInfoSchemaPath(processGuid), true)
	schedulingInfoErr = ErrorFromEtcdError(logger, schedulingInfoErr)
	if schedulingInfoErr != nil && schedulingInfoErr != models.ErrResourceNotFound {
		logger.Error("failed-deleting-scheduling-info", schedulingInfoErr)
		return schedulingInfoErr
	}

	_, runInfoErr := db.client.Delete(DesiredLRPRunInfoSchemaPath(processGuid), true)
	runInfoErr = ErrorFromEtcdError(logger, runInfoErr)
	if runInfoErr != nil && runInfoErr != models.ErrResourceNotFound {
		logger.Error("failed-deleting-run-info", runInfoErr)
		return runInfoErr
	}

	if schedulingInfoErr == models.ErrResourceNotFound && runInfoErr == models.ErrResourceNotFound {
		// If neither component of the desired LRP exists, don't bother trying to delete running instances
		return models.ErrResourceNotFound
	}

	return nil
}

func (db *serviceClient) CellEvents(logger lager.Logger) <-chan models.CellEvent {
	logger = logger.Session("cell-events")

	disappearanceWatcher, disappeared := locket.NewDisappearanceWatcher(logger, db.consulClient, CellSchemaRoot(), db.clock)
	process := ifrit.Invoke(disappearanceWatcher)

	events := make(chan models.CellEvent)
	go func() {
		for {
			select {
			case keys, ok := <-disappeared:
				if !ok {
					process.Signal(os.Interrupt)
					return
				}

				cellIDs := make([]string, len(keys))
				for i, key := range keys {
					cellIDs[i] = path.Base(key)
				}
				logger.Info("cell-disappeared", lager.Data{"cell_ids": cellIDs})
				events <- models.NewCellDisappearedEvent(cellIDs)
			}
		}
	}()

	return events
}

func (r *driverSyncer) Discover(logger lager.Logger) (map[string]voldriver.Driver, error) {
	logger = logger.Session("discover")
	logger.Debug("start")
	logger.Info(fmt.Sprintf("Discovering drivers in %s", r.driverPaths))
	defer logger.Debug("end")

	endpoints := make(map[string]voldriver.Driver)
	for _, driverPath := range r.driverPaths {
		//precedence order: sock -> spec -> json
		spec_types := [3]string{"sock", "spec", "json"}
		for _, spec_type := range spec_types {
			matchingDriverSpecs, err := r.getMatchingDriverSpecs(logger, driverPath, spec_type)

			if err != nil {
				// untestable on linux, does glob work differently on windows???
				return map[string]voldriver.Driver{}, fmt.Errorf("Volman configured with an invalid driver path '%s', error occured list files (%s)", driverPath, err.Error())
			}
			if len(matchingDriverSpecs) > 0 {
				logger.Debug("driver-specs", lager.Data{"drivers": matchingDriverSpecs})
				endpoints = r.insertIfAliveAndNotFound(logger, endpoints, driverPath, matchingDriverSpecs)
			}
		}
	}
	return endpoints, nil
}

func (r *execPreparer) Prepare(log lager.Logger, bundlePath string, spec garden.ProcessSpec) (*PreparedSpec, error) {
	log = log.Session("prepare")

	log.Info("start")
	defer log.Info("finished")

	bndl, err := r.bundleLoader.Load(bundlePath)
	if err != nil {
		log.Error("load-bundle-failed", err)
		return nil, err
	}

	pidBytes, err := ioutil.ReadFile(filepath.Join(bundlePath, "pidfile"))
	if err != nil {
		log.Error("read-pidfile-failed", err)
		return nil, err
	}

	pid := string(pidBytes)
	rootFsPath := filepath.Join("/proc", pid, "root")
	u, err := r.lookupUser(bndl, rootFsPath, spec.User)
	if err != nil {
		log.Error("lookup-user-failed", err)
		return nil, err
	}

	cwd := u.home
	if spec.Dir != "" {
		cwd = spec.Dir
	}

	if err := r.ensureDirExists(rootFsPath, cwd, u.hostUid, u.hostGid); err != nil {
		log.Error("ensure-dir-failed", err)
		return nil, err
	}

	caps := bndl.Capabilities()
	if u.containerUid != 0 {
		caps = intersect(caps, r.nonRootMaxCaps)
	}

	return &PreparedSpec{
		HostUID: u.hostUid,
		HostGID: u.hostGid,
		Process: specs.Process{
			Args: append([]string{spec.Path}, spec.Args...),
			Env:  envFor(u.containerUid, bndl, spec),
			User: specs.User{
				UID:            uint32(u.containerUid),
				GID:            uint32(u.containerGid),
				AdditionalGids: []uint32{},
			},
			Cwd:             cwd,
			Capabilities:    caps,
			Rlimits:         toRlimits(spec.Limits),
			Terminal:        spec.TTY != nil,
			ApparmorProfile: bndl.Process().ApparmorProfile,
		},
	}, nil
}

func (c *Creator) Create(log lager.Logger, bundlePath, id string, _ garden.ProcessIO) (theErr error) {
	log = log.Session("create", lager.Data{"bundle": bundlePath})

	defer log.Info("finished")

	logFilePath := filepath.Join(bundlePath, "create.log")
	pidFilePath := filepath.Join(bundlePath, "pidfile")

	cmd := exec.Command(c.runcPath, "--debug", "--log", logFilePath, "create", "--no-new-keyring", "--bundle", bundlePath, "--pid-file", pidFilePath, id)

	log.Info("creating", lager.Data{
		"runc":        c.runcPath,
		"bundlePath":  bundlePath,
		"id":          id,
		"logPath":     logFilePath,
		"pidFilePath": pidFilePath,
	})

	err := c.commandRunner.Run(cmd)

	defer func() {
		theErr = processLogs(log, logFilePath, err)
	}()

	return
}

func connectToNatsServer(logger lager.Logger, c *config.Config, startMsg chan<- struct{}) *nats.Conn {
	var natsClient *nats.Conn
	var natsHost atomic.Value
	var err error

	options := natsOptions(logger, c, &natsHost, startMsg)
	attempts := 3
	for attempts > 0 {
		natsClient, err = options.Connect()
		if err == nil {
			break
		} else {
			attempts--
			time.Sleep(100 * time.Millisecond)
		}
	}

	if err != nil {
		logger.Fatal("nats-connection-error", err)
	}

	var natsHostStr string
	natsUrl, err := url.Parse(natsClient.ConnectedUrl())
	if err == nil {
		natsHostStr = natsUrl.Host
	}

	logger.Info("Successfully-connected-to-nats", lager.Data{"host": natsHostStr})

	natsHost.Store(natsHostStr)
	return natsClient
}

func (e *IncreaseRunInfoColumnSize) Up(logger lager.Logger) error {
	logger = logger.Session("increase-run-info-column")
	logger.Info("starting")
	defer logger.Info("completed")

	return alterTables(logger, e.rawSQLDB, e.dbFlavor)
}

func HandleCompletedTask(logger lager.Logger, httpClient *http.Client, taskDB db.TaskDB, task *models.Task) {
	logger = logger.Session("handle-completed-task", lager.Data{"task_guid": task.TaskGuid})

	if task.CompletionCallbackUrl != "" {
		modelErr := taskDB.ResolvingTask(logger, task.TaskGuid)
		if modelErr != nil {
			logger.Error("marking-task-as-resolving-failed", modelErr)
			return
		}

		logger = logger.WithData(lager.Data{"callback_url": task.CompletionCallbackUrl})

		json, err := json.Marshal(&models.TaskCallbackResponse{
			TaskGuid:      task.TaskGuid,
			Failed:        task.Failed,
			FailureReason: task.FailureReason,
			Result:        task.Result,
			Annotation:    task.Annotation,
			CreatedAt:     task.CreatedAt,
		})
		if err != nil {
			logger.Error("marshalling-task-failed", err)
			return
		}

		var statusCode int

		for i := 0; i < MAX_CB_RETRIES; i++ {
			request, err := http.NewRequest("POST", task.CompletionCallbackUrl, bytes.NewReader(json))
			if err != nil {
				logger.Error("building-request-failed", err)
				return
			}

			request.Header.Set("Content-Type", "application/json")
			response, err := httpClient.Do(request)
			if err != nil {
				matched, _ := regexp.MatchString("Client.Timeout|use of closed network connection", err.Error())
				if matched {
					continue
				}
				logger.Error("doing-request-failed", err)
				return
			}
			defer response.Body.Close()

			statusCode = response.StatusCode
			if shouldResolve(statusCode) {
				modelErr := taskDB.DeleteTask(logger, task.TaskGuid)
				if modelErr != nil {
					logger.Error("delete-task-failed", modelErr)
				}
				return
			}
		}

		logger.Info("callback-failed", lager.Data{"status_code": statusCode})
	}
	return
}

func (db *SQLDB) CompleteTask(logger lager.Logger, taskGuid, cellID string, failed bool, failureReason, taskResult string) (*models.Task, error) {
	logger = logger.Session("complete-task", lager.Data{"task_guid": taskGuid, "cell_id": cellID})
	logger.Info("starting")
	defer logger.Info("complete")

	var task *models.Task

	err := db.transact(logger, func(logger lager.Logger, tx *sql.Tx) error {
		var err error
		task, err = db.fetchTaskForUpdate(logger, taskGuid, tx)
		if err != nil {
			logger.Error("failed-locking-task", err)
			return err
		}

		if task.CellId != cellID && task.State == models.Task_Running {
			logger.Error("failed-task-already-running-on-different-cell", err)
			return models.NewRunningOnDifferentCellError(cellID, task.CellId)
		}

		if err = task.ValidateTransitionTo(models.Task_Completed); err != nil {
			logger.Error("failed-to-transition-task-to-completed", err)
			return err
		}

		return db.completeTask(logger, task, failed, failureReason, taskResult, tx)
	})

	return task, err
}

func (r *remoteClient) Unmount(logger lager.Logger, driverId string, volumeId string) error {
	logger = logger.Session("mount")
	logger.Info("start")
	defer logger.Info("end")

	unmountRequest := volman.UnmountRequest{driverId, volumeId}
	payload, err := json.Marshal(unmountRequest)
	if err != nil {
		return r.clientError(logger, err, fmt.Sprintf("Error marshalling JSON request %#v", unmountRequest))
	}

	request, err := r.reqGen.CreateRequest(volman.UnmountRoute, nil, bytes.NewReader(payload))

	if err != nil {
		return r.clientError(logger, err, fmt.Sprintf("Error creating request to %s", volman.UnmountRoute))
	}

	response, err := r.HttpClient.Do(request)
	if err != nil {
		return r.clientError(logger, err, fmt.Sprintf("Error unmounting volume %s", volumeId))
	}

	if response.StatusCode == 500 {
		var remoteError volman.Error
		if err := unmarshallJSON(logger, response.Body, &remoteError); err != nil {
			return r.clientError(logger, err, fmt.Sprintf("Error parsing 500 response from %s", volman.UnmountRoute))
		}
		return remoteError
	}

	return nil
}

func (db *SQLDB) DesireTask(logger lager.Logger, taskDef *models.TaskDefinition, taskGuid, domain string) error {
	logger = logger.Session("desire-task", lager.Data{"task_guid": taskGuid})
	logger.Info("starting")
	defer logger.Info("complete")

	taskDefData, err := db.serializeModel(logger, taskDef)
	if err != nil {
		logger.Error("failed-serializing-task-definition", err)
		return err
	}

	return db.transact(logger, func(logger lager.Logger, tx *sql.Tx) error {
		now := db.clock.Now().UnixNano()

		_, err = db.insert(logger, tx, tasksTable,
			SQLAttributes{
				"guid":               taskGuid,
				"domain":             domain,
				"created_at":         now,
				"updated_at":         now,
				"first_completed_at": 0,
				"state":              models.Task_Pending,
				"task_definition":    taskDefData,
			},
		)
		if err != nil {
			logger.Error("failed-inserting-task", err)
			return db.convertSQLError(err)
		}

		return nil
	})
}

func (db *ETCDDB) ConvergeLRPs(logger lager.Logger, cellSet models.CellSet) ([]*auctioneer.LRPStartRequest, []*models.ActualLRPKeyWithSchedulingInfo, []*models.ActualLRPKey) {
	convergeStart := db.clock.Now()
	convergeLRPRunsCounter.Increment()
	logger = logger.Session("etcd")
	logger.Info("starting-convergence")
	defer logger.Info("finished-convergence")

	defer func() {
		err := convergeLRPDuration.Send(time.Since(convergeStart))
		if err != nil {
			logger.Error("failed-sending-converge-lrp-duration-metric", err)
		}
	}()

	logger.Debug("gathering-convergence-input")
	input, err := db.GatherAndPruneLRPs(logger, cellSet)
	if err != nil {
		logger.Error("failed-gathering-convergence-input", err)
		return nil, nil, nil
	}
	logger.Debug("succeeded-gathering-convergence-input")

	changes := CalculateConvergence(logger, db.clock, models.NewDefaultRestartCalculator(), input)

	return db.ResolveConvergence(logger, input.DesiredLRPs, changes)
}

func (db *ETCDDB) batchDeleteNodes(keys []string, logger lager.Logger) {
	if len(keys) == 0 {
		return
	}

	works := []func(){}

	for _, key := range keys {
		key := key
		works = append(works, func() {
			logger.Info("deleting", lager.Data{"key": key})
			_, err := db.client.Delete(key, true)
			if err != nil {
				logger.Error("failed-to-delete", err, lager.Data{
					"key": key,
				})
			}
		})
	}

	throttler, err := workpool.NewThrottler(db.convergenceWorkersSize, works)
	if err != nil {
		logger.Error("failed-to-create-throttler", err)
	}

	throttler.Work()
	return
}

func (db *SQLDB) DeleteTask(logger lager.Logger, taskGuid string) error {
	logger = logger.Session("delete-task", lager.Data{"task_guid": taskGuid})
	logger.Info("starting")
	defer logger.Info("complete")

	return db.transact(logger, func(logger lager.Logger, tx *sql.Tx) error {
		task, err := db.fetchTaskForUpdate(logger, taskGuid, tx)
		if err != nil {
			logger.Error("failed-locking-task", err)
			return err
		}

		if task.State != models.Task_Resolving {
			err = models.NewTaskTransitionError(task.State, models.Task_Resolving)
			logger.Error("invalid-state-transition", err)
			return err
		}

		_, err = db.delete(logger, tx, tasksTable, "guid = ?", taskGuid)
		if err != nil {
			logger.Error("failed-deleting-task", err)
			return db.convertSQLError(err)
		}

		return nil
	})
}