Golang T.With方法代碼示例

// NewHealthCheck creates a new health check core plugin.
func NewHealthCheck(context context.T) *HealthCheck {
	healthContext := context.With("[" + name + "]")
	healthCheckStopPolicy := sdkutil.NewStopPolicy(name, 10)
	svc := ssm.NewService()

	return &HealthCheck{
		context:               healthContext,
		healthCheckStopPolicy: healthCheckStopPolicy,
		service:               svc,
	}
}

func runPlugin(
	context context.T,
	p plugin.T,
	pluginID string,
	config contracts.Configuration,
	cancelFlag task.CancelFlag,
) (res contracts.PluginResult) {
	// create a new context that includes plugin ID
	context = context.With("[pluginID=" + pluginID + "]")

	log := context.Log()
	defer func() {
		// recover in case the plugin panics
		// this should handle some kind of seg fault errors.
		if err := recover(); err != nil {
			res.Status = contracts.ResultStatusFailed
			res.Code = 1
			res.Error = fmt.Errorf("Plugin crashed with message %v!", err)
			log.Error(res.Error)
		}
	}()
	log.Debug("Running plugin")
	return p.Execute(context, config, cancelFlag)
}

// NewProcessor initializes a new mds processor with the given parameters.
func NewProcessor(context context.T) *Processor {
	messageContext := context.With("[" + name + "]")
	log := messageContext.Log()
	config := messageContext.AppConfig()

	instanceID, err := platform.InstanceID()
	if instanceID == "" {
		log.Errorf("no instanceID provided, %v", err)
		return nil
	}

	mdsService := newMdsService(config)

	agentInfo := contracts.AgentInfo{
		Lang:      config.Os.Lang,
		Name:      config.Agent.Name,
		Version:   config.Agent.Version,
		Os:        config.Os.Name,
		OsVersion: config.Os.Version,
	}

	agentConfig := contracts.AgentConfiguration{
		AgentInfo:  agentInfo,
		InstanceID: instanceID,
	}

	// sendCommand and cancelCommand will be processed by separate worker pools
	// so we can define the number of workers per each
	cancelWaitDuration := 10000 * time.Millisecond
	clock := times.DefaultClock
	sendCommandTaskPool := task.NewPool(log, config.Mds.CommandWorkersLimit, cancelWaitDuration, clock)
	cancelCommandTaskPool := task.NewPool(log, CancelWorkersLimit, cancelWaitDuration, clock)

	// create new message processor
	orchestrationRootDir := path.Join(appconfig.DefaultDataStorePath, instanceID, appconfig.DefaultCommandRootDirName, config.Agent.OrchestrationRootDir)

	replyBuilder := func(pluginID string, results map[string]*contracts.PluginResult) messageContracts.SendReplyPayload {
		runtimeStatuses := parser.PrepareRuntimeStatuses(log, results)
		return parser.PrepareReplyPayload(pluginID, runtimeStatuses, clock.Now(), agentConfig.AgentInfo)
	}

	statusReplyBuilder := func(agentInfo contracts.AgentInfo, resultStatus contracts.ResultStatus, documentTraceOutput string) messageContracts.SendReplyPayload {
		return parser.PrepareReplyPayloadToUpdateDocumentStatus(agentInfo, resultStatus, documentTraceOutput)

	}
	// create a stop policy where we will stop after 10 consecutive errors and if time period expires.
	processorStopPolicy := newStopPolicy()

	// SendResponse is used to send response on plugin completion.
	// If pluginID is empty it will send responses of all plugins.
	// If pluginID is specified, response will be sent of that particular plugin.
	sendResponse := func(messageID string, pluginID string, results map[string]*contracts.PluginResult) {
		payloadDoc := replyBuilder(pluginID, results)
		processSendReply(log, messageID, mdsService, payloadDoc, processorStopPolicy)
	}

	// SendDocLevelResponse is used to send document level update
	// Specify a new status of the document
	sendDocLevelResponse := func(messageID string, resultStatus contracts.ResultStatus, documentTraceOutput string) {
		payloadDoc := statusReplyBuilder(agentInfo, resultStatus, documentTraceOutput)
		processSendReply(log, messageID, mdsService, payloadDoc, processorStopPolicy)
	}

	// PersistData is used to persist the data into a bookkeeping folder
	persistData := func(msg *ssmmds.Message, bookkeeping string) {
		commandStateHelper.PersistData(log, getCommandID(*msg.MessageId), *msg.Destination, bookkeeping, *msg)
	}

	return &Processor{
		context:              messageContext,
		stopSignal:           make(chan bool),
		config:               agentConfig,
		service:              mdsService,
		pluginRunner:         pluginRunner,
		sendCommandPool:      sendCommandTaskPool,
		cancelCommandPool:    cancelCommandTaskPool,
		buildReply:           replyBuilder,
		sendResponse:         sendResponse,
		sendDocLevelResponse: sendDocLevelResponse,
		orchestrationRootDir: orchestrationRootDir,
		persistData:          persistData,
		processorStopPolicy:  processorStopPolicy,
	}
}