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LoadBalancePolicy.java API Doc JBoss 4.2.1 2776 Fri Jul 13 20:52:36 BST 2007 org.jboss.ha.framework.interfaces

LoadBalancePolicy

public interface LoadBalancePolicy implements Serializable

Base interface for load-balancing policies. It is possible to implement many different load-balancing policies by implementing this simple interface and using it in the different clustered services (home interface of SLSB for example)

author: Bill Burke.
author: Sacha Labourey.
version: $Revision: 57188 $

Fields Summary
static final long
serialVersionUID
The serialVersionUID
Constructors Summary
Methods Summary
public java.lang.Object chooseTarget(FamilyClusterInfo clusterFamily)
Called when the stub wishes to know on which node the next invocation must be performed.
param
clusterFamily A list of potential target nodes
return
The selected target for the next invocation
public java.lang.Object chooseTarget(FamilyClusterInfo clusterFamily, org.jboss.invocation.Invocation routingDecision)
Called when the stub wishes to know on which node the next invocation must be performed.
param
clusterFamily A list of potential target nodes
param
routingDecision The actual invocation object if the policy wants to have some kind of invocation-based routing strategy
return
The selected target for the next invocation
public void init(HARMIClient father)
Initialize the policy with a reference to its parent stub. the load-balancing policy implementation can use HARMIClient data to take its decision
param
father The stub that owns the policy