Exemple #1
0
// ListenForResponses listens for responses from an agent
func (rmq rabbitMQComms) ListenForResponses(stopListeningForResponses *chan bool) {

	queueName := "agentresponses"

	conn, err := amqp.Dial(rmq.queueUrl)
	if err != nil {
		log.Error(err)
		log.Error("Failed to connect to RabbitMQ")
		os.Exit(1)
	}
	defer conn.Close()

	ch, err := conn.Channel()
	if err != nil {
		log.Error("Failed to open a channel")
		os.Exit(1)
	}
	defer ch.Close()

	_, err = ch.QueueDeclare(
		queueName, // name
		false,     // durable
		false,     // delete when usused
		false,     // exclusive
		false,     // no-wait
		nil,       // arguments
	)
	if err != nil {
		log.Error("Failed to declare a queue")
		os.Exit(1)
	}

	msgs, err := ch.Consume(
		queueName, // queue
		queueName, // consumer
		true,      // auto-ack
		false,     // exclusive
		false,     // no-local
		false,     // no-wait
		nil,       // args
	)
	if err != nil {
		log.Error("Failed to register a consumer")
		os.Exit(1)
	}

	tdb, err := db.NewToddDB(rmq.config) // TODO(vcabbage): Consider moving this into the rabbitMQComms struct
	if err != nil {
		log.Error("Failed to connect to DB")
		os.Exit(1)
	}

	go func() {
		for d := range msgs {

			// Unmarshal into BaseResponse to determine type
			var base_msg responses.BaseResponse
			err = json.Unmarshal(d.Body, &base_msg)
			// TODO(mierdin): Need to handle this error

			log.Debugf("Agent response received: %s", d.Body)

			// call agent response method based on type
			switch base_msg.Type {
			case "AgentStatus":

				var sasr responses.SetAgentStatusResponse
				err = json.Unmarshal(d.Body, &sasr)
				// TODO(mierdin): Need to handle this error

				log.Debugf("Agent %s is '%s' regarding test %s. Writing to DB.", sasr.AgentUuid, sasr.Status, sasr.TestUuid)
				err := tdb.SetAgentTestStatus(sasr.TestUuid, sasr.AgentUuid, sasr.Status)
				if err != nil {
					log.Errorf("Error writing agent status to DB: %v", err)
				}

			case "TestData":

				var utdr responses.UploadTestDataResponse
				err = json.Unmarshal(d.Body, &utdr)
				// TODO(mierdin): Need to handle this error

				err = tdb.SetAgentTestData(utdr.TestUuid, utdr.AgentUuid, utdr.TestData)
				// TODO(mierdin): Need to handle this error

				// Send task to the agent that says to delete the entry
				var dtdt tasks.DeleteTestDataTask
				dtdt.Type = "DeleteTestData" //TODO(mierdin): This is an extra step. Maybe a factory function for the task could help here?
				dtdt.TestUuid = utdr.TestUuid
				rmq.SendTask(utdr.AgentUuid, dtdt)

				// Finally, set the status for this agent in the test to "finished"
				err := tdb.SetAgentTestStatus(dtdt.TestUuid, utdr.AgentUuid, "finished")
				if err != nil {
					log.Errorf("Error writing agent status to DB: %v", err)
				}

			default:
				log.Errorf(fmt.Sprintf("Unexpected type value for received response: %s", base_msg.Type))
			}
		}
	}()

	log.Infof(" [*] Waiting for messages. To exit press CTRL+C")
	<-*stopListeningForResponses
}
Exemple #2
0
// ListenForTasks is a method that recieves task notices from the server
func (rmq rabbitMQComms) ListenForTasks(uuid string) error {

	// Connect to RabbitMQ with retry logic
	conn, err := connectRabbitMQ(rmq.queueUrl)
	if err != nil {
		log.Error("(AdvertiseAgent) Failed to connect to RabbitMQ")
		return err
	}
	defer conn.Close()

	ch, err := conn.Channel()
	if err != nil {
		log.Error("Failed to open a channel")
		os.Exit(1)
	}
	defer ch.Close()

	_, err = ch.QueueDeclare(
		uuid,  // name
		false, // durable
		false, // delete when usused
		false, // exclusive
		false, // no-wait
		nil,   // arguments
	)
	if err != nil {
		log.Error("Failed to declare a queue")
		os.Exit(1)
	}

	msgs, err := ch.Consume(
		uuid,  // queue
		uuid,  // consumer
		true,  // auto-ack
		false, // exclusive
		false, // no-local
		false, // no-wait
		nil,   // args
	)
	if err != nil {
		log.Error("Failed to register a consumer")
		os.Exit(1)
	}

	forever := make(chan bool)

	go func() {
		for d := range msgs {

			// Unmarshal into BaseTaskMessage to determine type
			var base_msg tasks.BaseTask
			err = json.Unmarshal(d.Body, &base_msg)
			// TODO(mierdin): Need to handle this error

			log.Debugf("Agent task received: %s", d.Body)

			// call agent task method based on type
			switch base_msg.Type {
			case "DownloadAsset":

				downloadAssetTask := tasks.DownloadAssetTask{
					HTTPClient:   &http.Client{},
					Fs:           tasks.OsFS{},
					Ios:          tasks.IoSys{},
					CollectorDir: fmt.Sprintf("%s/assets/factcollectors", rmq.config.LocalResources.OptDir),
					TestletDir:   fmt.Sprintf("%s/assets/testlets", rmq.config.LocalResources.OptDir),
				}

				err = json.Unmarshal(d.Body, &downloadAssetTask)
				// TODO(mierdin): Need to handle this error

				err = downloadAssetTask.Run()
				if err != nil {
					log.Warning("The KeyValue task failed to initialize")
				}

			case "KeyValue":

				kv_task := tasks.KeyValueTask{
					Config: rmq.config,
				}

				err = json.Unmarshal(d.Body, &kv_task)
				// TODO(mierdin): Need to handle this error

				err = kv_task.Run()
				if err != nil {
					log.Warning("The KeyValue task failed to initialize")
				}

			case "SetGroup":

				sg_task := tasks.SetGroupTask{
					Config: rmq.config,
				}

				err = json.Unmarshal(d.Body, &sg_task)
				// TODO(mierdin): Need to handle this error

				err = sg_task.Run()
				if err != nil {
					log.Warning("The SetGroup task failed to initialize")
				}

			case "DeleteTestData":

				dtdt_task := tasks.DeleteTestDataTask{
					Config: rmq.config,
				}

				err = json.Unmarshal(d.Body, &dtdt_task)
				// TODO(mierdin): Need to handle this error

				err = dtdt_task.Run()
				if err != nil {
					log.Warning("The DeleteTestData task failed to initialize")
				}

			case "InstallTestRun":

				// Retrieve UUID
				var ac = cache.NewAgentCache(rmq.config)
				uuid := ac.GetKeyValue("uuid")

				itr_task := tasks.InstallTestRunTask{
					Config: rmq.config,
				}

				err = json.Unmarshal(d.Body, &itr_task)
				// TODO(mierdin): Need to handle this error

				var response responses.SetAgentStatusResponse
				response.Type = "AgentStatus" //TODO(mierdin): This is an extra step. Maybe a factory function for the task could help here?
				response.AgentUuid = uuid
				response.TestUuid = itr_task.Tr.Uuid

				err = itr_task.Run()
				if err != nil {
					log.Warning("The InstallTestRun task failed to initialize")
					response.Status = "fail"
				} else {
					response.Status = "ready"
				}
				rmq.SendResponse(response)

			case "ExecuteTestRun":

				// Retrieve UUID
				var ac = cache.NewAgentCache(rmq.config)
				uuid := ac.GetKeyValue("uuid")

				etr_task := tasks.ExecuteTestRunTask{
					Config: rmq.config,
				}

				err = json.Unmarshal(d.Body, &etr_task)
				// TODO(mierdin): Need to handle this error

				// Send status that the testing has begun, right now.
				response := responses.SetAgentStatusResponse{
					TestUuid: etr_task.TestUuid,
					Status:   "testing",
				}
				response.AgentUuid = uuid     // TODO(mierdin): Can't declare this in the literal, it's that embedding behavior again. Need to figure this out.
				response.Type = "AgentStatus" //TODO(mierdin): This is an extra step. Maybe a factory function for the task could help here?
				rmq.SendResponse(response)

				err = etr_task.Run()
				if err != nil {
					log.Warning("The ExecuteTestRun task failed to initialize")
					response.Status = "fail"
					rmq.SendResponse(response)
				}

			default:
				log.Errorf(fmt.Sprintf("Unexpected type value for received task: %s", base_msg.Type))
			}
		}
	}()

	log.Infof(" [*] Waiting for messages. To exit press CTRL+C")
	<-forever

	return nil
}