Exemplo n.º 1
0
// 接收和报告错误
func reportError(
	scheduler scheduler.MKScheduler,
	record MKRecord,
	stopNotifier <-chan byte) {

	go func() {
		// 等待调度器开启
		waitForSchedulerStart(scheduler)

		for {
			// 查看监控停止通知器
			select {
			case <-stopNotifier:
				return
			default:
			}

			errorChan := scheduler.ErrorChan()
			if errorChan == nil {
				return
			}

			err := <-errorChan
			if err != nil {
				errMsg := fmt.Sprintf("Error (received from error channel): %s", err)
				record(2, errMsg)
			}

			time.Sleep(time.Microsecond)
		}
	}()
}
Exemplo n.º 2
0
// 记录摘要信息
func recordSummary(
	scheduler scheduler.MKScheduler,
	detailSummary bool,
	record MKRecord,
	stopNotifier <-chan byte) {

	go func() {
		// 等待调度器开启
		waitForSchedulerStart(scheduler)

		// 准备
		var prevSchedulerSummary scheduler.SchedulerSummary
		var prevNumberGoroutine int
		var recordCount uint64 = 1
		startTime := time.Now()

		for {
			// 查看监控停止通知器
			select {
			case <-stopNotifier:
				return
			default:
			}

			// 获取摘要信息的各组成部分
			currentNumberGoroutine := runtime.NumGoroutine()
			currentSchedulerSummary := scheduler.Summary("	")

			// 比对前后两份摘要信息的一致性。只有不一致时才会予以记录
			if currentNumberGoroutine != prevNumberGoroutine ||
				!currentSchedulerSummary.Same(prevSchedulerSummary) {
				schedulerSummaryString := func() string {
					if detailSummary {
						return currentSchedulerSummary.Detail()
					} else {
						return currentSchedulerSummary.String()
					}
				}()

				// 记录摘要信息
				info := fmt.Sprintf(summaryForMonitoring,
					recordCount,
					currentNumberGoroutine,
					schedulerSummaryString,
					time.Since(startTime).String(),
				)

				record(0, info)

				prevNumberGoroutine = currentNumberGoroutine
				prevSchedulerSummary = currentSchedulerSummary
				recordCount++
			}

			time.Sleep(time.Microsecond)
		}
	}()
}
Exemplo n.º 3
0
// 检查状态,并在满足持续空间时间的条件时采取必要措施
func checkStatus(
	scheduler scheduler.MKScheduler,
	interval time.Duration,
	maxIdleCount uint,
	autoStop bool,
	checkCountChan chan<- uint64,
	record MKRecord,
	stopNotifier chan<- byte) {

	var checkCount uint64
	go func() {

		defer func() {
			stopNotifier <- 1
			stopNotifier <- 2
			checkCountChan <- checkCount
		}()

		// 等待调度器开启
		waitForSchedulerStart(scheduler)

		// 准备
		var idleCount uint
		var firstIdleTime time.Time
		for {
			// 检查调度器的空闲状态
			if scheduler.Idle() {
				idleCount++
				if idleCount == 1 {
					firstIdleTime = time.Now()
				}

				if idleCount >= maxIdleCount {
					msg := fmt.Sprintf(messageForReachMaxIdleCount, time.Since(firstIdleTime).String())
					record(0, msg)

					// 再次检查调度器的空闲状态,确保它已经可以被停止
					if scheduler.Idle() {

						if autoStop {
							var result string
							if scheduler.Stop() {
								result = "success"
							} else {
								result = "failing"
							}

							msg = fmt.Sprintf(messageForReachMaxIdleCount, result)
							record(0, msg)
						}

						break
					} else {
						if idleCount > 0 {
							idleCount = 0
						}
					}
				}
			} else {
				if idleCount > 0 {
					idleCount = 0
				}
			}

			checkCount++
			time.Sleep(interval)
		}
	}()
}
Exemplo n.º 4
0
// 等待调度器开启
func waitForSchedulerStart(scheduler scheduler.MKScheduler) {

	for !scheduler.Running() {
		time.Sleep(time.Microsecond)
	}
}