Package org.rostore.v2.media.block.allocator

Class BlockAllocatorListeners

java.lang.Object

org.rostore.v2.media.block.allocator.BlockAllocatorListeners

public class BlockAllocatorListeners
extends Object

This is the holder of all block allocator's listeners.

Constructor Summary

Constructors

Constructor	Description
BlockAllocatorListeners()

Method Summary

Modifier and Type	Method	Description
void	addListener(BlockAllocatorListener blockAllocatorListener)	Add listener to be notified
boolean	isEnabled()	Enabled if at least one listener is added
void	notifyAllocated(String name, BlockType blockType, CatalogBlockIndices catalogBlockIndices, boolean rebalance)	Notify all listeners in the collection that a set of new blocks has just been allocated
void	notifyFreed(String name, CatalogBlockIndices catalogBlockIndices, boolean rebalance)	Notify all listeners in the collection that a set of blocks has just been freed
void	removeListener(BlockAllocatorListener blockAllocatorListener)	Remove the listener, and stop receiving notifications

Methods inherited from class java.lang.Object

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

Constructor Details

BlockAllocatorListeners

public BlockAllocatorListeners()

Method Details

addListener

public void addListener(BlockAllocatorListener blockAllocatorListener)

Add listener to be notified

Parameters:

blockAllocatorListener - the listener to add

removeListener

public void removeListener(BlockAllocatorListener blockAllocatorListener)

Remove the listener, and stop receiving notifications

Parameters:

blockAllocatorListener - the listener to disable

isEnabled

public boolean isEnabled()

Enabled if at least one listener is added

Returns:

true if at least one listener is added

notifyAllocated

public void notifyAllocated(String name,
 BlockType blockType,
 CatalogBlockIndices catalogBlockIndices,
 boolean rebalance)

Notify all listeners in the collection that a set of new blocks has just been allocated

Parameters:

name - the name of the allocator

blockType - the type of the allocated block

catalogBlockIndices - a set of allocated blocks

rebalance - true if allocation has happened in the rebarance=true cycle

notifyFreed

public void notifyFreed(String name,
 CatalogBlockIndices catalogBlockIndices,
 boolean rebalance)

Notify all listeners in the collection that a set of blocks has just been freed

Parameters:

name - the name of the allocator

catalogBlockIndices - a set of allocated blocks

rebalance - true if blocks have been freed in the rebarance=true cycle