Exemple #1
0
func (s *IsolatedWorkerSuite) TestConfigValidation(c *gc.C) {
	tests := []struct {
		cfg      meterstatus.IsolatedConfig
		expected string
	}{{
		cfg: meterstatus.IsolatedConfig{
			Runner:    &stubRunner{stub: s.stub},
			StateFile: meterstatus.NewStateFile(path.Join(s.dataDir, "meter-status.yaml")),
		},
		expected: "clock not provided",
	}, {
		cfg: meterstatus.IsolatedConfig{
			Clock:     testing.NewClock(time.Now()),
			StateFile: meterstatus.NewStateFile(path.Join(s.dataDir, "meter-status.yaml")),
		},
		expected: "hook runner not provided",
	}, {
		cfg: meterstatus.IsolatedConfig{
			Clock:  testing.NewClock(time.Now()),
			Runner: &stubRunner{stub: s.stub},
		},
		expected: "state file not provided",
	}}
	for i, test := range tests {
		c.Logf("running test %d", i)
		err := test.cfg.Validate()
		c.Assert(err, gc.ErrorMatches, test.expected)
	}
}
Exemple #2
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// TestStatusHandlerDoesNotRerunAfterRestart tests that the status handler will not rerun a meter-status-changed
// hook if it is restarted, but no actual changes are recorded.
func (s *ConnectedWorkerSuite) TestStatusHandlerDoesNotRerunAfterRestart(c *gc.C) {
	handler, err := meterstatus.NewConnectedStatusHandler(
		meterstatus.ConnectedConfig{
			Runner:    &stubRunner{stub: s.stub},
			StateFile: meterstatus.NewStateFile(path.Join(s.dataDir, "meter-status.yaml")),
			Status:    s.msClient,
		})
	c.Assert(err, jc.ErrorIsNil)
	c.Assert(handler, gc.NotNil)
	_, err = handler.SetUp()
	c.Assert(err, jc.ErrorIsNil)

	err = handler.Handle(nil)
	c.Assert(err, jc.ErrorIsNil)

	s.stub.CheckCallNames(c, "WatchMeterStatus", "MeterStatus", "RunHook")
	s.stub.ResetCalls()

	// Create a new handler (imitating worker restart).
	handler, err = meterstatus.NewConnectedStatusHandler(
		meterstatus.ConnectedConfig{
			Runner:    &stubRunner{stub: s.stub},
			StateFile: meterstatus.NewStateFile(path.Join(s.dataDir, "meter-status.yaml")),
			Status:    s.msClient})
	c.Assert(err, jc.ErrorIsNil)
	c.Assert(handler, gc.NotNil)
	_, err = handler.SetUp()
	c.Assert(err, jc.ErrorIsNil)

	err = handler.Handle(nil)
	c.Assert(err, jc.ErrorIsNil)

	s.stub.CheckCallNames(c, "WatchMeterStatus", "MeterStatus")
}
Exemple #3
0
func (s *IsolatedWorkerSuite) SetUpTest(c *gc.C) {
	s.BaseSuite.SetUpTest(c)
	s.stub = &testing.Stub{}

	s.dataDir = c.MkDir()

	s.hookRan = make(chan struct{})
	s.triggersCreated = make(chan struct{})

	triggerFactory := func(state meterstatus.WorkerState, status string, disconectedAt time.Time, clk clock.Clock, amber time.Duration, red time.Duration) (<-chan time.Time, <-chan time.Time) {
		select {
		case s.triggersCreated <- struct{}{}:
		case <-time.After(coretesting.LongWait):
			c.Fatalf("failed to signal trigger creation")
		}
		return meterstatus.GetTriggers(state, status, disconectedAt, clk, amber, red)
	}

	s.clk = testing.NewClock(time.Now())
	wrk, err := meterstatus.NewIsolatedStatusWorker(
		meterstatus.IsolatedConfig{
			Runner:           &stubRunner{stub: s.stub, ran: s.hookRan},
			StateFile:        meterstatus.NewStateFile(path.Join(s.dataDir, "meter-status.yaml")),
			Clock:            s.clk,
			AmberGracePeriod: AmberGracePeriod,
			RedGracePeriod:   RedGracePeriod,
			TriggerFactory:   triggerFactory,
		})
	c.Assert(err, jc.ErrorIsNil)
	c.Assert(wrk, gc.NotNil)
	s.worker = wrk
}
Exemple #4
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// TestStatusHandlerHandlesHookMissingError tests that the handler does not report errors
// caused by a missing meter-status-changed hook.
func (s *ConnectedWorkerSuite) TestStatusHandlerHandlesHookMissingError(c *gc.C) {
	s.stub.SetErrors(context.NewMissingHookError("meter-status-changed"))
	handler, err := meterstatus.NewConnectedStatusHandler(
		meterstatus.ConnectedConfig{
			Runner:    &stubRunner{stub: s.stub},
			StateFile: meterstatus.NewStateFile(path.Join(s.dataDir, "meter-status.yaml")),
			Status:    s.msClient,
		})
	c.Assert(err, jc.ErrorIsNil)
	c.Assert(handler, gc.NotNil)
	_, err = handler.SetUp()
	c.Assert(err, jc.ErrorIsNil)

	err = handler.Handle(nil)
	c.Assert(err, jc.ErrorIsNil)
	s.stub.CheckCallNames(c, "WatchMeterStatus", "MeterStatus", "RunHook")
}
Exemple #5
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// TestStatusHandlerRunsHookOnChanges ensures that the handler runs the meter-status-changed hook
// if an actual meter status change is detected.
func (s *ConnectedWorkerSuite) TestStatusHandlerRunsHookOnChanges(c *gc.C) {
	handler, err := meterstatus.NewConnectedStatusHandler(
		meterstatus.ConnectedConfig{
			Runner:    &stubRunner{stub: s.stub},
			StateFile: meterstatus.NewStateFile(path.Join(s.dataDir, "meter-status.yaml")),
			Status:    s.msClient,
		})
	c.Assert(err, jc.ErrorIsNil)
	c.Assert(handler, gc.NotNil)
	_, err = handler.SetUp()
	c.Assert(err, jc.ErrorIsNil)

	handler.Handle(nil)
	s.msClient.SetStatus("RED")
	handler.Handle(nil)

	c.Assert(err, jc.ErrorIsNil)
	s.stub.CheckCallNames(c, "WatchMeterStatus", "MeterStatus", "RunHook", "MeterStatus", "RunHook")
}
Exemple #6
0
func (t *StateFileSuite) SetUpTest(c *gc.C) {
	t.path = path.Join(c.MkDir(), "state.yaml")
	t.state = meterstatus.NewStateFile(t.path)
}