Ejemplo n.º 1
0
func (s *environSuite) TestEnvironmentChanges(c *gc.C) {
	originalConfig, err := s.State.EnvironConfig()
	c.Assert(err, gc.IsNil)

	logc := make(logChan, 1009)
	c.Assert(loggo.RegisterWriter("testing", logc, loggo.WARNING), gc.IsNil)
	defer loggo.RemoveWriter("testing")

	obs, err := worker.NewEnvironObserver(s.State)
	c.Assert(err, gc.IsNil)

	env := obs.Environ()
	c.Assert(env.Config().AllAttrs(), gc.DeepEquals, originalConfig.AllAttrs())
	var oldType string
	oldType = env.Config().AllAttrs()["type"].(string)

	info := s.MongoInfo(c)
	opts := mongo.DefaultDialOpts()
	st2, err := state.Open(info, opts, state.Policy(nil))
	defer st2.Close()

	// Change to an invalid configuration and check
	// that the observer's environment remains the same.
	st2.UpdateEnvironConfig(map[string]interface{}{"type": "invalid"}, nil, nil)
	st2.StartSync()

	// Wait for the observer to register the invalid environment
	timeout := time.After(coretesting.LongWait)
loop:
	for {
		select {
		case msg := <-logc:
			if strings.Contains(msg, "error creating Environ") {
				break loop
			}
		case <-timeout:
			c.Fatalf("timed out waiting to see broken environment")
		}
	}
	// Check that the returned environ is still the same.
	env = obs.Environ()
	c.Assert(env.Config().AllAttrs(), gc.DeepEquals, originalConfig.AllAttrs())

	// Change the environment back to a valid configuration
	// with a different name and check that we see it.
	st2.UpdateEnvironConfig(map[string]interface{}{"type": oldType, "name": "a-new-name"}, nil, nil)
	st2.StartSync()

	for a := coretesting.LongAttempt.Start(); a.Next(); {
		env := obs.Environ()
		if !a.HasNext() {
			c.Fatalf("timed out waiting for new environ")
		}
		if env.Config().Name() == "a-new-name" {
			break
		}
	}
}
Ejemplo n.º 2
0
func (s *environSuite) TestEnvironmentChanges(c *gc.C) {
	s.st.SetConfig(c, nil)

	logc := make(logChan, 1009)
	c.Assert(loggo.RegisterWriter("testing", logc, loggo.WARNING), gc.IsNil)
	defer loggo.RemoveWriter("testing")

	obs, err := worker.NewEnvironObserver(s.st)
	c.Assert(err, jc.ErrorIsNil)

	env := obs.Environ()
	s.st.AssertConfig(c, env.Config())

	// Change to an invalid configuration and check
	// that the observer's environment remains the same.
	originalConfig, err := s.st.EnvironConfig()
	c.Assert(err, jc.ErrorIsNil)

	s.st.SetConfig(c, coretesting.Attrs{
		"type": "invalid",
	})

	// Wait for the observer to register the invalid environment
loop:
	for {
		select {
		case msg := <-logc:
			if strings.Contains(msg, "error creating an environment") {
				break loop
			}
		case <-time.After(coretesting.LongWait):
			c.Fatalf("timed out waiting to see broken environment")
		}
	}
	// Check that the returned environ is still the same.
	env = obs.Environ()
	c.Assert(env.Config().AllAttrs(), jc.DeepEquals, originalConfig.AllAttrs())

	// Change the environment back to a valid configuration
	// with a different name and check that we see it.
	s.st.SetConfig(c, coretesting.Attrs{
		"name": "a-new-name",
	})

	for a := coretesting.LongAttempt.Start(); a.Next(); {
		env := obs.Environ()
		if !a.HasNext() {
			c.Fatalf("timed out waiting for new environ")
		}
		if env.Config().Name() == "a-new-name" {
			break
		}
	}
}
Ejemplo n.º 3
0
func (s *environSuite) TestErrorWhenEnvironIsInvalid(c *gc.C) {
	// reopen the state so that we can wangle a dodgy environ config in there.
	st, err := state.Open(s.MongoInfo(c), mongo.DefaultDialOpts(), state.Policy(nil))
	c.Assert(err, gc.IsNil)
	defer st.Close()
	err = st.UpdateEnvironConfig(map[string]interface{}{"secret": 999}, nil, nil)
	c.Assert(err, gc.IsNil)
	obs, err := worker.NewEnvironObserver(s.State)
	c.Assert(err, gc.ErrorMatches, `cannot make Environ: secret: expected string, got int\(999\)`)
	c.Assert(obs, gc.IsNil)
}
Ejemplo n.º 4
0
func (s *environSuite) TestErrorWhenEnvironIsInvalid(c *gc.C) {
	s.st.SetConfig(c, coretesting.Attrs{
		"type": "unknown",
	})

	obs, err := worker.NewEnvironObserver(s.st)
	c.Assert(err, gc.ErrorMatches,
		`cannot create an environment: no registered provider for "unknown"`,
	)
	c.Assert(obs, gc.IsNil)
	s.st.CheckCallNames(c, "EnvironConfig")
}
Ejemplo n.º 5
0
func (u *updaterWorker) loop() (err error) {
	u.observer, err = worker.NewEnvironObserver(u.st)
	if err != nil {
		return err
	}
	u.aggregator = newAggregator(u.observer.Environ())
	logger.Infof("instance poller received inital environment configuration")
	defer func() {
		obsErr := worker.Stop(u.observer)
		if err == nil {
			err = obsErr
		}
	}()
	return watchMachinesLoop(u, u.st.WatchEnvironMachines())
}