Golang Logger.Error方法代码示例

func (db *ETCDDB) resolveActualsWithMissingCells(logger lager.Logger, desired *models.DesiredLRP, actual *models.ActualLRP, starts *startRequests) func() {
	return func() {
		logger = logger.Session("start-missing-actual", lager.Data{
			"process-guid": actual.ProcessGuid,
			"index":        actual.Index,
		})

		logger.Debug("removing-actual-lrp")
		removeErr := db.RemoveActualLRP(logger, actual.ActualLRPKey.ProcessGuid, actual.ActualLRPKey.Index)
		if removeErr != nil {
			logger.Error("failed-removing-actual-lrp", removeErr)
			return
		}
		logger.Debug("succeeded-removing-actual-lrp")

		if actual.Index >= desired.Instances {
			return
		}

		logger.Debug("creating-actual-lrp")
		err := db.createActualLRP(logger, desired, actual.Index)
		if err != nil {
			logger.Error("failed-creating-actual-lrp", err)
			return
		}
		logger.Debug("succeeded-creating-actual-lrp")

		starts.Add(logger, &actual.ActualLRPKey)
	}
}

func configure(logger lager.Logger) (*ssh.ServerConfig, error) {
	errorStrings := []string{}
	sshConfig := &ssh.ServerConfig{}

	key, err := acquireHostKey(logger)
	if err != nil {
		logger.Error("failed-to-acquire-host-key", err)
		errorStrings = append(errorStrings, err.Error())
	}

	sshConfig.AddHostKey(key)
	sshConfig.NoClientAuth = *allowUnauthenticatedClients

	if *authorizedKey == "" && !*allowUnauthenticatedClients {
		logger.Error("authorized-key-required", nil)
		errorStrings = append(errorStrings, "Public user key is required")
	}

	if *authorizedKey != "" {
		decodedPublicKey, err := decodeAuthorizedKey(logger)
		if err == nil {
			authenticator := authenticators.NewPublicKeyAuthenticator(decodedPublicKey)
			sshConfig.PublicKeyCallback = authenticator.Authenticate
		} else {
			errorStrings = append(errorStrings, err.Error())
		}
	}

	err = nil
	if len(errorStrings) > 0 {
		err = errors.New(strings.Join(errorStrings, ", "))
	}

	return sshConfig, err
}

func (s *Scheduler) TriggerImmediately(logger lager.Logger, job atc.JobConfig, resources atc.ResourceConfigs, resourceTypes atc.ResourceTypes) (db.Build, Waiter, error) {
	logger = logger.Session("trigger-immediately")

	build, err := s.PipelineDB.CreateJobBuild(job.Name)
	if err != nil {
		logger.Error("failed-to-create-build", err)
		return db.Build{}, nil, err
	}

	jobService, err := NewJobService(job, s.PipelineDB, s.Scanner)
	if err != nil {
		return db.Build{}, nil, err
	}

	wg := new(sync.WaitGroup)
	wg.Add(1)

	// do not block request on scanning input versions
	go func() {
		defer wg.Done()
		s.ScheduleAndResumePendingBuild(logger, nil, build, job, resources, resourceTypes, jobService)
	}()

	return build, wg, nil
}

func ProxyRequests(logger lager.Logger, channelType string, reqs <-chan *ssh.Request, channel ssh.Channel) {
	logger = logger.Session("proxy-requests", lager.Data{
		"channel-type": channelType,
	})

	logger.Info("started")
	defer logger.Info("completed")
	defer channel.Close()

	for req := range reqs {
		logger.Info("request", lager.Data{
			"type":      req.Type,
			"wantReply": req.WantReply,
			"payload":   req.Payload,
		})
		success, err := channel.SendRequest(req.Type, req.WantReply, req.Payload)
		if err != nil {
			logger.Error("send-request-failed", err)
			continue
		}

		if req.WantReply {
			req.Reply(success, nil)
		}
	}
}

func (build *execBuild) Resume(logger lager.Logger) {
	stepFactory := build.buildStepFactory(logger, build.metadata.Plan)
	source := stepFactory.Using(&exec.NoopStep{}, exec.NewSourceRepository())

	defer source.Release()

	process := ifrit.Background(source)

	exited := process.Wait()

	aborted := false
	var succeeded exec.Success

	for {
		select {
		case err := <-exited:
			if aborted {
				succeeded = false
			} else if !source.Result(&succeeded) {
				logger.Error("step-had-no-result", errors.New("step failed to provide us with a result"))
				succeeded = false
			}

			build.delegate.Finish(logger.Session("finish"), err, succeeded, aborted)
			return

		case sig := <-build.signals:
			process.Signal(sig)

			if sig == os.Kill {
				aborted = true
			}
		}
	}
}

func (db *serviceClient) Cells(logger lager.Logger) (models.CellSet, error) {
	kvPairs, _, err := db.consulClient.KV().List(CellSchemaRoot(), nil)
	if err != nil {
		bbsErr := models.ConvertError(convertConsulError(err))
		if bbsErr.Type != models.Error_ResourceNotFound {
			return nil, bbsErr
		}
	}

	if kvPairs == nil {
		err = consuladapter.NewPrefixNotFoundError(CellSchemaRoot())
		bbsErr := models.ConvertError(convertConsulError(err))
		if bbsErr.Type != models.Error_ResourceNotFound {
			return nil, bbsErr
		}
	}

	cellPresences := models.NewCellSet()
	for _, kvPair := range kvPairs {
		if kvPair.Session == "" {
			continue
		}

		cell := kvPair.Value
		presence := new(models.CellPresence)
		err := models.FromJSON(cell, presence)
		if err != nil {
			logger.Error("failed-to-unmarshal-cells-json", err)
			continue
		}
		cellPresences.Add(presence)
	}

	return cellPresences, nil
}

func initializeDropsonde(logger lager.Logger) {
	dropsondeDestination := fmt.Sprint("localhost:", *dropsondePort)
	err := dropsonde.Initialize(dropsondeDestination, dropsondeOrigin)
	if err != nil {
		logger.Error("failed to initialize dropsonde: %v", err)
	}
}

func (db *ETCDDB) resolveRestartableCrashedActualLRPS(logger lager.Logger, actualLRP *models.ActualLRP, starts *startRequests) func() {
	return func() {
		actualKey := actualLRP.ActualLRPKey

		logger = logger.Session("restart-crash", lager.Data{
			"process_guid": actualKey.ProcessGuid,
			"index":        actualKey.Index,
		})

		if actualLRP.State != models.ActualLRPStateCrashed {
			logger.Error("failed-actual-lrp-state-is-not-crashed", nil)
			return
		}

		logger.Debug("unclaiming-actual-lrp", lager.Data{"process_guid": actualLRP.ActualLRPKey.ProcessGuid, "index": actualLRP.ActualLRPKey.Index})
		_, err := db.unclaimActualLRP(logger, &actualLRP.ActualLRPKey, &actualLRP.ActualLRPInstanceKey)
		if err != nil {
			logger.Error("failed-unclaiming-crash", err)
			return
		}
		logger.Debug("succeeded-unclaiming-actual-lrp")

		starts.Add(logger, &actualKey)
	}
}

func (h *DesireAppHandler) createDesiredApp(
	logger lager.Logger,
	desireAppMessage cc_messages.DesireAppRequestFromCC,
) error {
	var builder recipebuilder.RecipeBuilder = h.recipeBuilders["buildpack"]
	if desireAppMessage.DockerImageUrl != "" {
		builder = h.recipeBuilders["docker"]
	}

	desiredLRP, err := builder.Build(&desireAppMessage)
	if err != nil {
		logger.Error("failed-to-build-recipe", err)
		return err
	}

	logger.Debug("creating-desired-lrp", lager.Data{"routes": sanitizeRoutes(desiredLRP.Routes)})
	err = h.bbsClient.DesireLRP(desiredLRP)
	if err != nil {
		logger.Error("failed-to-create-lrp", err)
		return err
	}
	logger.Debug("created-desired-lrp")

	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 (s *Scheduler) TryNextPendingBuild(logger lager.Logger, job atc.JobConfig, resources atc.ResourceConfigs) Waiter {
	logger = logger.Session("try-next-pending")

	wg := new(sync.WaitGroup)

	wg.Add(1)
	go func() {
		defer wg.Done()

		build, err := s.PipelineDB.GetNextPendingBuild(job.Name)
		if err != nil {
			if err == db.ErrNoBuild {
				return
			}

			logger.Error("failed-to-get-next-pending-build", err)

			return
		}

		s.scheduleAndResumePendingBuild(logger, build, job, resources)
	}()

	return wg
}

func provision(serviceBroker ServiceBroker, router httpRouter, logger lager.Logger) http.HandlerFunc {
	return func(w http.ResponseWriter, req *http.Request) {
		vars := router.Vars(req)
		instanceID := vars["instance_id"]
		acceptsIncomplete := false
		if req.URL.Query().Get("accepts_incomplete") == "true" {
			acceptsIncomplete = true
		}

		logger := logger.Session(provisionLogKey, lager.Data{
			instanceIDLogKey: instanceID,
		})

		var details ProvisionDetails
		if err := json.NewDecoder(req.Body).Decode(&details); err != nil {
			logger.Error(invalidProvisionDetailsErrorKey, err)
			respond(w, http.StatusBadRequest, ErrorResponse{
				Description: err.Error(),
			})
			return
		}

		logger = logger.WithData(lager.Data{
			provisionDetailsLogKey: details,
		})

		provisioningResponse, asynch, err := serviceBroker.Provision(instanceID, details, acceptsIncomplete)
		if err != nil {
			switch err {
			case ErrInstanceAlreadyExists:
				logger.Error(instanceAlreadyExistsErrorKey, err)
				respond(w, http.StatusConflict, EmptyResponse{})
			case ErrInstanceLimitMet:
				logger.Error(instanceLimitReachedErrorKey, err)
				respond(w, http.StatusInternalServerError, ErrorResponse{
					Description: err.Error(),
				})
			case ErrAsyncRequired:
				logger.Error(instanceAsyncRequiredErrorKey, err)
				respond(w, statusUnprocessableEntity, ErrorResponse{
					Error:       "AsyncRequired",
					Description: err.Error(),
				})
			default:
				logger.Error(unknownErrorKey, err)
				respond(w, http.StatusInternalServerError, ErrorResponse{
					Description: err.Error(),
				})
			}
			return
		}

		if asynch {
			respond(w, http.StatusAccepted, provisioningResponse)
			return
		}

		respond(w, http.StatusCreated, provisioningResponse)
	}
}

func lastOperation(serviceBroker ServiceBroker, router httpRouter, logger lager.Logger) http.HandlerFunc {
	return func(w http.ResponseWriter, req *http.Request) {
		vars := router.Vars(req)
		instanceID := vars["instance_id"]

		logger := logger.Session(lastOperationLogKey, lager.Data{
			instanceIDLogKey: instanceID,
		})

		lastOperationResponse, err := serviceBroker.LastOperation(instanceID)
		if err != nil {
			switch err {
			case ErrInstanceDoesNotExist:
				logger.Error(instanceMissingErrorKey, err)
				respond(w, http.StatusGone, EmptyResponse{})
			default:
				logger.Error(unknownErrorKey, err)
				respond(w, http.StatusInternalServerError, ErrorResponse{
					Description: err.Error(),
				})
			}
			return
		}

		respond(w, http.StatusOK, lastOperationResponse)
	}
}

func newVolume(logger lager.Logger, bcVol baggageclaim.Volume, clock clock.Clock, db VolumeFactoryDB) (Volume, bool, error) {
	vol := &volume{
		Volume: bcVol,
		db:     db,

		heartbeating: new(sync.WaitGroup),
		release:      make(chan *time.Duration, 1),
	}

	ttl, found, err := vol.db.GetVolumeTTL(vol.Handle())
	if err != nil {
		logger.Error("failed-to-lookup-expiration-of-volume", err)
		return nil, false, err
	}

	if !found {
		return nil, false, nil
	}

	vol.heartbeat(logger.Session("initial-heartbeat"), ttl)

	vol.heartbeating.Add(1)
	go vol.heartbeatContinuously(
		logger.Session("continuous-heartbeat"),
		clock.NewTicker(volumeKeepalive),
		ttl,
	)

	return vol, true, nil
}