Exemplo n.º 1
0
// startModelWorkers starts the set of workers that run for every model
// in each controller.
func (a *MachineAgent) startModelWorkers(uuid string) (worker.Worker, error) {
	modelAgent, err := model.WrapAgent(a, uuid)
	if err != nil {
		return nil, errors.Trace(err)
	}

	engine, err := dependency.NewEngine(dependency.EngineConfig{
		IsFatal:     model.IsFatal,
		WorstError:  model.WorstError,
		Filter:      model.IgnoreErrRemoved,
		ErrorDelay:  3 * time.Second,
		BounceDelay: 10 * time.Millisecond,
	})
	if err != nil {
		return nil, errors.Trace(err)
	}

	manifolds := modelManifolds(model.ManifoldsConfig{
		Agent:                       modelAgent,
		AgentConfigChanged:          a.configChangedVal,
		Clock:                       clock.WallClock,
		RunFlagDuration:             time.Minute,
		CharmRevisionUpdateInterval: 24 * time.Hour,
		EntityStatusHistoryCount:    100,
		EntityStatusHistoryInterval: 5 * time.Minute,
		SpacesImportedGate:          a.discoverSpacesComplete,
	})
	if err := dependency.Install(engine, manifolds); err != nil {
		if err := worker.Stop(engine); err != nil {
			logger.Errorf("while stopping engine with bad manifolds: %v", err)
		}
		return nil, errors.Trace(err)
	}
	return engine, nil
}
Exemplo n.º 2
0
Arquivo: unit.go Projeto: makyo/juju
// APIWorkers returns a dependency.Engine running the unit agent's responsibilities.
func (a *UnitAgent) APIWorkers() (worker.Worker, error) {
	manifolds := unit.Manifolds(unit.ManifoldsConfig{
		Agent:               agent.APIHostPortsSetter{a},
		LogSource:           a.bufferedLogs,
		LeadershipGuarantee: 30 * time.Second,
		AgentConfigChanged:  a.configChangedVal,
	})

	config := dependency.EngineConfig{
		IsFatal:     cmdutil.IsFatal,
		WorstError:  cmdutil.MoreImportantError,
		ErrorDelay:  3 * time.Second,
		BounceDelay: 10 * time.Millisecond,
	}
	engine, err := dependency.NewEngine(config)
	if err != nil {
		return nil, err
	}
	if err := dependency.Install(engine, manifolds); err != nil {
		if err := worker.Stop(engine); err != nil {
			logger.Errorf("while stopping engine with bad manifolds: %v", err)
		}
		return nil, err
	}
	return engine, nil
}
Exemplo n.º 3
0
func (a *MachineAgent) makeEngineCreator(previousAgentVersion version.Number) func() (worker.Worker, error) {
	return func() (worker.Worker, error) {
		config := dependency.EngineConfig{
			IsFatal:     cmdutil.IsFatal,
			WorstError:  cmdutil.MoreImportantError,
			ErrorDelay:  3 * time.Second,
			BounceDelay: 10 * time.Millisecond,
		}
		engine, err := dependency.NewEngine(config)
		if err != nil {
			return nil, err
		}
		manifolds := machineManifolds(machine.ManifoldsConfig{
			PreviousAgentVersion: previousAgentVersion,
			Agent:                agent.APIHostPortsSetter{Agent: a},
			RootDir:              a.rootDir,
			AgentConfigChanged:   a.configChangedVal,
			UpgradeStepsLock:     a.upgradeComplete,
			UpgradeCheckLock:     a.initialUpgradeCheckComplete,
			OpenState:            a.initState,
			OpenStateForUpgrade:  a.openStateForUpgrade,
			StartStateWorkers:    a.startStateWorkers,
			StartAPIWorkers:      a.startAPIWorkers,
			PreUpgradeSteps:      upgrades.PreUpgradeSteps,
			LogSource:            a.bufferedLogs,
			NewDeployContext:     newDeployContext,
			Clock:                clock.WallClock,
			ValidateMigration:    a.validateMigration,
		})
		if err := dependency.Install(engine, manifolds); err != nil {
			if err := worker.Stop(engine); err != nil {
				logger.Errorf("while stopping engine with bad manifolds: %v", err)
			}
			return nil, err
		}
		if err := startIntrospection(introspectionConfig{
			Agent:      a,
			Engine:     engine,
			WorkerFunc: introspection.NewWorker,
		}); err != nil {
			// If the introspection worker failed to start, we just log error
			// but continue. It is very unlikely to happen in the real world
			// as the only issue is connecting to the abstract domain socket
			// and the agent is controlled by by the OS to only have one.
			logger.Errorf("failed to start introspection worker: %v", err)
		}
		return engine, nil
	}
}
Exemplo n.º 4
0
func (s *EngineSuite) TestInstallConvenienceWrapper(c *gc.C) {
	mh1 := newManifoldHarness()
	mh2 := newManifoldHarness()
	mh3 := newManifoldHarness()

	err := dependency.Install(s.engine, dependency.Manifolds{
		"mh1": mh1.Manifold(),
		"mh2": mh2.Manifold(),
		"mh3": mh3.Manifold(),
	})
	c.Assert(err, jc.ErrorIsNil)

	mh1.AssertOneStart(c)
	mh2.AssertOneStart(c)
	mh3.AssertOneStart(c)
}
Exemplo n.º 5
0
// startModelWorkers starts the set of workers that run for every model
// in each controller.
func (a *MachineAgent) startModelWorkers(controllerUUID, modelUUID string) (worker.Worker, error) {
	modelAgent, err := model.WrapAgent(a, controllerUUID, modelUUID)
	if err != nil {
		return nil, errors.Trace(err)
	}

	engine, err := dependency.NewEngine(dependency.EngineConfig{
		IsFatal:     model.IsFatal,
		WorstError:  model.WorstError,
		Filter:      model.IgnoreErrRemoved,
		ErrorDelay:  3 * time.Second,
		BounceDelay: 10 * time.Millisecond,
	})
	if err != nil {
		return nil, errors.Trace(err)
	}

	manifolds := modelManifolds(model.ManifoldsConfig{
		Agent:                       modelAgent,
		AgentConfigChanged:          a.configChangedVal,
		Clock:                       clock.WallClock,
		RunFlagDuration:             time.Minute,
		CharmRevisionUpdateInterval: 24 * time.Hour,
		InstPollerAggregationDelay:  3 * time.Second,
		// TODO(perrito666) the status history pruning numbers need
		// to be adjusting, after collecting user data from large install
		// bases, to numbers allowing a rich and useful back history.
		StatusHistoryPrunerMaxHistoryTime: 336 * time.Hour, // 2 weeks
		StatusHistoryPrunerMaxHistoryMB:   5120,            // 5G
		StatusHistoryPrunerInterval:       5 * time.Minute,
		SpacesImportedGate:                a.discoverSpacesComplete,
		NewEnvironFunc:                    newEnvirons,
		NewMigrationMaster:                migrationmaster.NewWorker,
	})
	if err := dependency.Install(engine, manifolds); err != nil {
		if err := worker.Stop(engine); err != nil {
			logger.Errorf("while stopping engine with bad manifolds: %v", err)
		}
		return nil, errors.Trace(err)
	}
	return engine, nil
}
Exemplo n.º 6
0
Arquivo: unit.go Projeto: bac/juju
// APIWorkers returns a dependency.Engine running the unit agent's responsibilities.
func (a *UnitAgent) APIWorkers() (worker.Worker, error) {
	manifolds := unitManifolds(unit.ManifoldsConfig{
		Agent:               agent.APIHostPortsSetter{a},
		LogSource:           a.bufferedLogs,
		LeadershipGuarantee: 30 * time.Second,
		AgentConfigChanged:  a.configChangedVal,
		ValidateMigration:   a.validateMigration,
	})

	config := dependency.EngineConfig{
		IsFatal:     cmdutil.IsFatal,
		WorstError:  cmdutil.MoreImportantError,
		ErrorDelay:  3 * time.Second,
		BounceDelay: 10 * time.Millisecond,
	}
	engine, err := dependency.NewEngine(config)
	if err != nil {
		return nil, err
	}
	if err := dependency.Install(engine, manifolds); err != nil {
		if err := worker.Stop(engine); err != nil {
			logger.Errorf("while stopping engine with bad manifolds: %v", err)
		}
		return nil, err
	}
	if err := startIntrospection(introspectionConfig{
		Agent:      a,
		Engine:     engine,
		WorkerFunc: introspection.NewWorker,
	}); err != nil {
		// If the introspection worker failed to start, we just log error
		// but continue. It is very unlikely to happen in the real world
		// as the only issue is connecting to the abstract domain socket
		// and the agent is controlled by by the OS to only have one.
		logger.Errorf("failed to start introspection worker: %v", err)
	}
	return engine, nil
}
Exemplo n.º 7
0
func (a *MachineAgent) makeEngineCreator(previousAgentVersion version.Number) func() (worker.Worker, error) {
	return func() (worker.Worker, error) {
		config := dependency.EngineConfig{
			IsFatal:     cmdutil.IsFatal,
			WorstError:  cmdutil.MoreImportantError,
			ErrorDelay:  3 * time.Second,
			BounceDelay: 10 * time.Millisecond,
		}
		engine, err := dependency.NewEngine(config)
		if err != nil {
			return nil, err
		}
		manifolds := machine.Manifolds(machine.ManifoldsConfig{
			PreviousAgentVersion: previousAgentVersion,
			Agent:                agent.APIHostPortsSetter{Agent: a},
			RootDir:              a.rootDir,
			AgentConfigChanged:   a.configChangedVal,
			UpgradeStepsLock:     a.upgradeComplete,
			UpgradeCheckLock:     a.initialUpgradeCheckComplete,
			OpenState:            a.initState,
			OpenStateForUpgrade:  a.openStateForUpgrade,
			StartStateWorkers:    a.startStateWorkers,
			StartAPIWorkers:      a.startAPIWorkers,
			PreUpgradeSteps:      upgrades.PreUpgradeSteps,
			LogSource:            a.bufferedLogs,
			NewDeployContext:     newDeployContext,
			Clock:                clock.WallClock,
		})
		if err := dependency.Install(engine, manifolds); err != nil {
			if err := worker.Stop(engine); err != nil {
				logger.Errorf("while stopping engine with bad manifolds: %v", err)
			}
			return nil, err
		}
		return engine, nil
	}
}