org.embulk.guice

Class LifeCycleManager

java.lang.Object

org.embulk.guice.LifeCycleManager

public final class LifeCycleManager
extends java.lang.Object

Manages PostConstruct and PreDestroy life cycles

Constructor Summary

Constructors

Constructor and Description
LifeCycleManager(java.util.List<java.lang.Object> managedInstances, org.embulk.guice.LifeCycleMethodsMap methodsMap, java.util.List<LifeCycleListener> listeners)

Method Summary

Modifier and Type	Method and Description
void	addInstance(java.lang.Object instance) Add an additional managed instance
void	destroy() Stop the life cycle - all instances will have their PreDestroy method(s) called
void	destroyOnShutdownHook() Add a shutdown hook that calls destroy method
boolean	isDestroyed() Return true if destroy is called
int	size() Returns the number of managed instances
void	start() Start the life cycle - all instances will have their PostConstruct method(s) called

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

LifeCycleManager

public LifeCycleManager(java.util.List<java.lang.Object> managedInstances,
                        org.embulk.guice.LifeCycleMethodsMap methodsMap,
                        java.util.List<LifeCycleListener> listeners)
                 throws java.lang.Exception

Parameters:

managedInstances - list of objects that have life cycle annotations

methodsMap - existing or new methods map

listeners - listeners called when state changes

Throws:

java.lang.Exception - exceptions starting instances (depending on mode)

Method Detail

size

public int size()

Returns the number of managed instances

Returns:

qty

start

public void start()

Start the life cycle - all instances will have their PostConstruct method(s) called

destroyOnShutdownHook

public void destroyOnShutdownHook()

Add a shutdown hook that calls destroy method

destroy

public void destroy()
             throws java.lang.Exception

Stop the life cycle - all instances will have their PreDestroy method(s) called

Throws:

java.lang.Exception - errors

isDestroyed

public boolean isDestroyed()

Return true if destroy is called

Returns:

true if already destroyed

addInstance

public void addInstance(java.lang.Object instance)
                 throws java.lang.Exception

Add an additional managed instance

Parameters:

instance - instance to add

Throws:

java.lang.Exception - errors