Package com.yahoo.messagebus.network.rpc

Class RPCServicePool

java.lang.Object

com.yahoo.messagebus.network.rpc.RPCServicePool

public class RPCServicePool
extends Object

Class used to reuse services for the same address when sending messages over the rpc network.

Author:

Simon Thoresen Hult

Constructor Summary

Constructors

Constructor	Description
RPCServicePool(RPCNetwork net, int maxSize)	Create a new service pool for the given network.

Method Summary

Modifier and Type	Method	Description
int	getSize()	Returns the number of services available in the pool.
boolean	hasService(String pattern)	Returns whether or not there is a service available in the pool the corresponds to the given pattern.
RPCServiceAddress	resolve(String pattern)	Returns the RPCServiceAddress that corresponds to a given pattern.

Methods inherited from class java.lang.Object

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

Constructor Details

RPCServicePool

public RPCServicePool(RPCNetwork net,
 int maxSize)

Create a new service pool for the given network.

Parameters:

net - The underlying RPC network.

maxSize - The max number of services to cache.

Method Details

resolve

public RPCServiceAddress resolve(String pattern)

Returns the RPCServiceAddress that corresponds to a given pattern. This reuses the RPCService object for matching pattern so that load balancing is possible on the network level.

Parameters:

pattern - The pattern for the service we require.

Returns:

A service address for the given pattern.

getSize

public int getSize()

Returns the number of services available in the pool. This number will never exceed the limit given at construction time.

Returns:

The current size of this pool.

hasService

public boolean hasService(String pattern)

Returns whether or not there is a service available in the pool the corresponds to the given pattern.

Parameters:

pattern - The pattern to check for.

Returns:

True if a corresponding service is in the pool.