Exemplo n.º 1
0
func (a *UnitAgent) APIWorkers() (worker.Worker, error) {
	agentConfig := a.CurrentConfig()
	dataDir := agentConfig.DataDir()
	hookLock, err := hookExecutionLock(dataDir)
	if err != nil {
		return nil, err
	}
	st, entity, err := openAPIState(agentConfig, a)
	if err != nil {
		return nil, err
	}
	runner := worker.NewRunner(connectionIsFatal(st), moreImportant)
	runner.StartWorker("upgrader", func() (worker.Worker, error) {
		return upgrader.NewUpgrader(st.Upgrader(), agentConfig), nil
	})
	runner.StartWorker("logger", func() (worker.Worker, error) {
		return workerlogger.NewLogger(st.Logger(), agentConfig), nil
	})
	runner.StartWorker("uniter", func() (worker.Worker, error) {
		return uniter.NewUniter(st.Uniter(), entity.Tag(), dataDir, hookLock), nil
	})
	runner.StartWorker("apiaddressupdater", func() (worker.Worker, error) {
		return apiaddressupdater.NewAPIAddressUpdater(st.Uniter(), a), nil
	})
	runner.StartWorker("rsyslog", func() (worker.Worker, error) {
		return newRsyslogConfigWorker(st.Rsyslog(), agentConfig, rsyslog.RsyslogModeForwarding)
	})
	return newCloseWorker(runner, st), nil
}
Exemplo n.º 2
0
func (s startUniter) step(c *gc.C, ctx *context) {
	if s.unitTag == "" {
		s.unitTag = "unit-u-0"
	}
	if ctx.uniter != nil {
		panic("don't start two uniters!")
	}
	if ctx.api == nil {
		panic("API connection not established")
	}
	tag, err := names.ParseUnitTag(s.unitTag)
	if err != nil {
		panic(err.Error())
	}
	locksDir := filepath.Join(ctx.dataDir, "locks")
	lock, err := fslock.NewLock(locksDir, "uniter-hook-execution")
	c.Assert(err, jc.ErrorIsNil)
	operationExecutor := operation.NewExecutor
	if s.newExecutorFunc != nil {
		operationExecutor = s.newExecutorFunc
	}

	uniterParams := uniter.UniterParams{
		UniterFacade:         ctx.api,
		UnitTag:              tag,
		LeadershipTracker:    ctx.leaderTracker,
		CharmDirLocker:       ctx.charmDirLocker,
		DataDir:              ctx.dataDir,
		MachineLock:          lock,
		UpdateStatusSignal:   ctx.updateStatusHookTicker.ReturnTimer,
		NewOperationExecutor: operationExecutor,
		Observer:             ctx,
	}
	ctx.uniter = uniter.NewUniter(&uniterParams)
}
Exemplo n.º 3
0
func (s startUniter) step(c *gc.C, ctx *context) {
	if s.unitTag == "" {
		s.unitTag = "unit-u-0"
	}
	if ctx.uniter != nil {
		panic("don't start two uniters!")
	}
	if ctx.api == nil {
		panic("API connection not established")
	}
	tag, err := names.ParseUnitTag(s.unitTag)
	if err != nil {
		panic(err.Error())
	}
	locksDir := filepath.Join(ctx.dataDir, "locks")
	lock, err := fslock.NewLock(locksDir, "uniter-hook-execution")
	c.Assert(err, jc.ErrorIsNil)
	uniterParams := uniter.UniterParams{
		St:                ctx.api,
		UnitTag:           tag,
		LeadershipManager: ctx.leader,
		DataDir:           ctx.dataDir,
		HookLock:          lock,
		MetricsTimerChooser: uniter.NewTestingMetricsTimerChooser(
			ctx.collectMetricsTicker.ReturnTimer,
			ctx.sendMetricsTicker.ReturnTimer,
		),
		UpdateStatusSignal:   ctx.updateStatusHookTicker.ReturnTimer,
		NewOperationExecutor: s.newExecutorFunc,
	}
	ctx.uniter = uniter.NewUniter(&uniterParams)
	uniter.SetUniterObserver(ctx.uniter, ctx)
}
Exemplo n.º 4
0
func (s startUniter) step(c *gc.C, ctx *context) {
	if s.unitTag == "" {
		s.unitTag = "unit-u-0"
	}
	if ctx.uniter != nil {
		panic("don't start two uniters!")
	}
	if ctx.api == nil {
		panic("API connection not established")
	}
	tag, err := names.ParseUnitTag(s.unitTag)
	if err != nil {
		panic(err.Error())
	}
	locksDir := filepath.Join(ctx.dataDir, "locks")
	lock, err := fslock.NewLock(locksDir, "uniter-hook-execution")
	c.Assert(err, jc.ErrorIsNil)
	uniterParams := uniter.UniterParams{
		ctx.api,
		tag,
		ctx.leader,
		ctx.dataDir,
		lock,
		uniter.NewTestingMetricsTimerChooser(ctx.metricsTicker.ReturnTimer),
		ctx.updateStatusHookTicker.ReturnTimer,
	}
	ctx.uniter = uniter.NewUniter(&uniterParams)
	uniter.SetUniterObserver(ctx.uniter, ctx)
}
Exemplo n.º 5
0
Arquivo: unit.go Projeto: kapilt/juju
func (a *UnitAgent) APIWorkers() (worker.Worker, error) {
	agentConfig := a.CurrentConfig()
	dataDir := agentConfig.DataDir()
	hookLock, err := hookExecutionLock(dataDir)
	if err != nil {
		return nil, err
	}
	st, entity, err := openAPIState(agentConfig, a)
	if err != nil {
		return nil, err
	}

	// Before starting any workers, ensure we record the Juju version this unit
	// agent is running.
	currentTools := &tools.Tools{Version: version.Current}
	if err := st.Upgrader().SetVersion(agentConfig.Tag().String(), currentTools.Version); err != nil {
		return nil, errors.Annotate(err, "cannot set unit agent version")
	}

	runner := worker.NewRunner(connectionIsFatal(st), moreImportant)
	runner.StartWorker("upgrader", func() (worker.Worker, error) {
		return upgrader.NewUpgrader(
			st.Upgrader(),
			agentConfig,
			agentConfig.UpgradedToVersion(),
			func() bool { return false },
		), nil
	})
	runner.StartWorker("logger", func() (worker.Worker, error) {
		return workerlogger.NewLogger(st.Logger(), agentConfig), nil
	})
	runner.StartWorker("uniter", func() (worker.Worker, error) {
		return uniter.NewUniter(st.Uniter(), entity.Tag(), dataDir, hookLock), nil
	})
	runner.StartWorker("apiaddressupdater", func() (worker.Worker, error) {
		return apiaddressupdater.NewAPIAddressUpdater(st.Uniter(), a), nil
	})
	runner.StartWorker("rsyslog", func() (worker.Worker, error) {
		return newRsyslogConfigWorker(st.Rsyslog(), agentConfig, rsyslog.RsyslogModeForwarding)
	})
	return newCloseWorker(runner, st), nil
}
Exemplo n.º 6
0
func (s startUniter) step(c *gc.C, ctx *context) {
	if s.unitTag == "" {
		s.unitTag = "unit-u-0"
	}
	if ctx.uniter != nil {
		panic("don't start two uniters!")
	}
	if ctx.api == nil {
		panic("API connection not established")
	}
	tag, err := names.ParseUnitTag(s.unitTag)
	if err != nil {
		panic(err.Error())
	}
	downloader := api.NewCharmDownloader(ctx.apiConn.Client())
	locksDir := filepath.Join(ctx.dataDir, "locks")
	lock, err := fslock.NewLock(locksDir, "uniter-hook-execution", fslock.Defaults())
	c.Assert(err, jc.ErrorIsNil)
	operationExecutor := operation.NewExecutor
	if s.newExecutorFunc != nil {
		operationExecutor = s.newExecutorFunc
	}

	uniterParams := uniter.UniterParams{
		UniterFacade:         ctx.api,
		UnitTag:              tag,
		LeadershipTracker:    ctx.leaderTracker,
		CharmDirGuard:        ctx.charmDirGuard,
		DataDir:              ctx.dataDir,
		Downloader:           downloader,
		MachineLock:          lock,
		UpdateStatusSignal:   ctx.updateStatusHookTicker.ReturnTimer,
		NewOperationExecutor: operationExecutor,
		Observer:             ctx,
		// TODO(axw) 2015-11-02 #1512191
		// update tests that rely on timing to advance clock
		// appropriately.
		Clock: clock.WallClock,
	}
	ctx.uniter, err = uniter.NewUniter(&uniterParams)
	c.Assert(err, jc.ErrorIsNil)
}
Exemplo n.º 7
0
func (a *UnitAgent) APIWorkers() (_ worker.Worker, err error) {
	agentConfig := a.CurrentConfig()
	dataDir := agentConfig.DataDir()
	hookLock, err := cmdutil.HookExecutionLock(dataDir)
	if err != nil {
		return nil, err
	}
	st, entity, err := OpenAPIState(agentConfig, a)
	if err != nil {
		return nil, err
	}
	unitTag, err := names.ParseUnitTag(entity.Tag())
	if err != nil {
		return nil, errors.Trace(err)
	}
	// Ensure that the environment uuid is stored in the agent config.
	// Luckily the API has it recorded for us after we connect.
	if agentConfig.Environment().Id() == "" {
		err := a.ChangeConfig(func(setter agent.ConfigSetter) error {
			environTag, err := st.EnvironTag()
			if err != nil {
				return errors.Annotate(err, "no environment uuid set on api")
			}

			return setter.Migrate(agent.MigrateParams{
				Environment: environTag,
			})
		})
		if err != nil {
			logger.Warningf("unable to save environment uuid: %v", err)
			// Not really fatal, just annoying.
		}
	}

	defer func() {
		if err != nil {
			st.Close()
			reportClosedUnitAPI(st)
		}
	}()

	// Before starting any workers, ensure we record the Juju version this unit
	// agent is running.
	currentTools := &tools.Tools{Version: version.Current}
	apiStateUpgrader := a.getUpgrader(st)
	if err := apiStateUpgrader.SetVersion(agentConfig.Tag().String(), currentTools.Version); err != nil {
		return nil, errors.Annotate(err, "cannot set unit agent version")
	}

	runner := worker.NewRunner(cmdutil.ConnectionIsFatal(logger, st), cmdutil.MoreImportant)
	// start proxyupdater first to ensure proxy settings are correct
	runner.StartWorker("proxyupdater", func() (worker.Worker, error) {
		return proxyupdater.New(st.Environment(), false), nil
	})
	runner.StartWorker("upgrader", func() (worker.Worker, error) {
		return upgrader.NewAgentUpgrader(
			st.Upgrader(),
			agentConfig,
			agentConfig.UpgradedToVersion(),
			func() bool { return false },
			a.initialAgentUpgradeCheckComplete,
		), nil
	})
	runner.StartWorker("logger", func() (worker.Worker, error) {
		return workerlogger.NewLogger(st.Logger(), agentConfig), nil
	})
	runner.StartWorker("uniter", func() (worker.Worker, error) {
		uniterFacade, err := st.Uniter()
		if err != nil {
			return nil, errors.Trace(err)
		}
		uniterParams := uniter.UniterParams{
			uniterFacade,
			unitTag,
			leadership.NewClient(st),
			dataDir,
			hookLock,
			uniter.NewMetricsTimerChooser(),
			uniter.NewUpdateStatusTimer(),
		}
		return uniter.NewUniter(&uniterParams), nil
	})

	runner.StartWorker("apiaddressupdater", func() (worker.Worker, error) {
		uniterFacade, err := st.Uniter()
		if err != nil {
			return nil, errors.Trace(err)
		}
		return apiaddressupdater.NewAPIAddressUpdater(uniterFacade, a), nil
	})
	runner.StartWorker("rsyslog", func() (worker.Worker, error) {
		return cmdutil.NewRsyslogConfigWorker(st.Rsyslog(), agentConfig, rsyslog.RsyslogModeForwarding)
	})
	return cmdutil.NewCloseWorker(logger, runner, st), nil
}