Exemple #1
0
func (s *ResumerSuite) TestRunStopWithState(c *gc.C) {
	// Test with state ensures that state fulfills the
	// TransactionResumer interface.
	rr := resumer.NewResumer(s.State)

	c.Assert(rr.Stop(), gc.IsNil)
}
Exemple #2
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func (s *ResumerSuite) TestResumerCalls(c *gc.C) {
	// Shorter interval and mock help to count
	// the resumer calls in a given timespan.
	testInterval := 10 * time.Millisecond
	resumer.SetInterval(testInterval)
	defer resumer.RestoreInterval()

	tr := &transactionResumerMock{[]time.Time{}}
	rr := resumer.NewResumer(tr)
	defer func() { c.Assert(rr.Stop(), gc.IsNil) }()

	time.Sleep(10 * testInterval)

	// Check that a numner of calls has happened with a time
	// difference somewhere between the interval and twice the
	// interval. A more precise time behavior cannot be
	// specified due to the load during the test.
	c.Assert(len(tr.timestamps) > 0, gc.Equals, true)
	for i := 1; i < len(tr.timestamps); i++ {
		diff := tr.timestamps[i].Sub(tr.timestamps[i-1])

		c.Assert(diff >= testInterval, gc.Equals, true)
		c.Assert(diff <= 4*testInterval, gc.Equals, true)
	}
}
Exemple #3
0
// StateWorker returns a worker running all the workers that require
// a *state.State connection.
func (a *MachineAgent) StateWorker() (worker.Worker, error) {
	agentConfig := a.CurrentConfig()

	// Create system-identity file
	if err := agent.WriteSystemIdentityFile(agentConfig); err != nil {
		return nil, err
	}

	// Start MondoDB server
	if err := a.ensureMongoServer(agentConfig); err != nil {
		return nil, err
	}
	st, m, err := openState(agentConfig)
	if err != nil {
		return nil, err
	}
	reportOpenedState(st)

	singularStateConn := singularStateConn{st.MongoSession(), m}
	runner := newRunner(connectionIsFatal(st), moreImportant)
	singularRunner, err := newSingularRunner(runner, singularStateConn)
	if err != nil {
		return nil, fmt.Errorf("cannot make singular State Runner: %v", err)
	}

	// Take advantage of special knowledge here in that we will only ever want
	// the storage provider on one machine, and that is the "bootstrap" node.
	providerType := agentConfig.Value(agent.ProviderType)
	if (providerType == provider.Local || provider.IsManual(providerType)) && m.Id() == bootstrapMachineId {
		a.startWorkerAfterUpgrade(runner, "local-storage", func() (worker.Worker, error) {
			// TODO(axw) 2013-09-24 bug #1229507
			// Make another job to enable storage.
			// There's nothing special about this.
			return localstorage.NewWorker(agentConfig), nil
		})
	}
	for _, job := range m.Jobs() {
		switch job {
		case state.JobHostUnits:
			// Implemented in APIWorker.
		case state.JobManageEnviron:
			useMultipleCPUs()
			a.startWorkerAfterUpgrade(runner, "instancepoller", func() (worker.Worker, error) {
				return instancepoller.NewWorker(st), nil
			})
			a.startWorkerAfterUpgrade(runner, "peergrouper", func() (worker.Worker, error) {
				return peergrouperNew(st)
			})
			runner.StartWorker("apiserver", func() (worker.Worker, error) {
				// If the configuration does not have the required information,
				// it is currently not a recoverable error, so we kill the whole
				// agent, potentially enabling human intervention to fix
				// the agent's configuration file. In the future, we may retrieve
				// the state server certificate and key from the state, and
				// this should then change.
				info, ok := agentConfig.StateServingInfo()
				if !ok {
					return nil, &fatalError{"StateServingInfo not available and we need it"}
				}
				port := info.APIPort
				cert := []byte(info.Cert)
				key := []byte(info.PrivateKey)

				if len(cert) == 0 || len(key) == 0 {
					return nil, &fatalError{"configuration does not have state server cert/key"}
				}
				dataDir := agentConfig.DataDir()
				logDir := agentConfig.LogDir()
				return apiserver.NewServer(
					st, fmt.Sprintf(":%d", port), cert, key, dataDir, logDir)
			})
			a.startWorkerAfterUpgrade(singularRunner, "cleaner", func() (worker.Worker, error) {
				return cleaner.NewCleaner(st), nil
			})
			a.startWorkerAfterUpgrade(singularRunner, "resumer", func() (worker.Worker, error) {
				// The action of resumer is so subtle that it is not tested,
				// because we can't figure out how to do so without brutalising
				// the transaction log.
				return resumer.NewResumer(st), nil
			})
			a.startWorkerAfterUpgrade(singularRunner, "minunitsworker", func() (worker.Worker, error) {
				return minunitsworker.NewMinUnitsWorker(st), nil
			})
		case state.JobManageStateDeprecated:
			// Legacy environments may set this, but we ignore it.
		default:
			logger.Warningf("ignoring unknown job %q", job)
		}
	}
	return newCloseWorker(runner, st), nil
}