AfterEach(func() {
		close(stopChan)
		Eventually(runDone).Should(BeClosed())
	})

	var perform = func() {
		go func() {
			runtimeStats.Run(stopChan)
			close(runDone)
		}()
	}

	var getMetricNames = func() []string {
		var names []string
		for _, event := range fakeEventEmitter.GetEvents() {
			names = append(names, event.(*events.ValueMetric).GetName())
		}
		return names
	}

	It("periodically emits events", func() {
		perform()

		Eventually(func() int { return len(fakeEventEmitter.GetMessages()) }).Should(BeNumerically(">=", 2))
	})

	It("emits a NumCpu metric", func() {
		perform()

		Eventually(fakeEventEmitter.GetEvents).Should(ContainElement(&events.ValueMetric{
Beispiel #2
0
		})

		It("counts number of log messages read per app", func() {
			sender.SendAppErrorLog("app-id1", "custom-log-message", "App", "0")
			sender.SendAppErrorLog("app-id1", "custom-log-message", "App", "0")
			sender.SendAppErrorLog("app-id2", "custom-log-message", "App", "0")

			Eventually(emitter.GetEvents).Should(ContainElement(&events.ValueMetric{Name: proto.String("logSenderTotalMessagesRead.app-id1"), Value: proto.Float64(2), Unit: proto.String("count")}))
			Eventually(emitter.GetEvents).Should(ContainElement(&events.ValueMetric{Name: proto.String("logSenderTotalMessagesRead.app-id2"), Value: proto.Float64(1), Unit: proto.String("count")}))
		})
	})

	Describe("counter emission", func() {
		It("emits on a timer", func() {
			Eventually(emitter.GetEvents).Should(ContainElement(&events.ValueMetric{Name: proto.String("logSenderTotalMessagesRead"), Value: proto.Float64(0), Unit: proto.String("count")}))
			Eventually(func() int { return len(emitter.GetEvents()) }).Should(BeNumerically(">", 3))

			sender.SendAppLog("app-id", "custom-log-message", "App", "0")
			Eventually(emitter.GetEvents).Should(ContainElement(&events.ValueMetric{Name: proto.String("logSenderTotalMessagesRead"), Value: proto.Float64(1), Unit: proto.String("count")}))

			sender.SendAppLog("app-id", "custom-log-message", "App", "0")
			Eventually(emitter.GetEvents).Should(ContainElement(&events.ValueMetric{Name: proto.String("logSenderTotalMessagesRead"), Value: proto.Float64(2), Unit: proto.String("count")}))

		})
	})

	Context("when messages cannot be emitted", func() {
		BeforeEach(func() {
			emitter.ReturnError = errors.New("expected error")
		})