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HttpInvokerProxyHA (JBoss Cluster API) - JBoss 4.0.1 sp1 cluster API Documentation 英文版文档

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org.jboss.invocation.http.interfaces
Class HttpInvokerProxyHA

java.lang.Object
  org.jboss.invocation.http.interfaces.HttpInvokerProxyHA

All Implemented Interfaces:

Externalizable, org.jboss.invocation.Invoker, InvokerProxyHA, Remote, Serializable

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public class HttpInvokerProxyHA

extends Object

implements InvokerProxyHA, org.jboss.invocation.Invoker, Externalizable

The client side Http invoker proxy that posts an invocation to the InvokerServlet using the HttpURLConnection created from a target url. This proxy handles failover using its associated LoadBalancePolicy and current list of URL strings. The candidate URLs are updated dynamically after an invocation if the cluster partitation view has changed.

Version:

$Revision: 1.2 $

Author:

Scott.Stark@jboss.org

See Also:

Serialized Form

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Field Summary
protected  FamilyClusterInfo	familyClusterInfo
protected  LoadBalancePolicy	loadBalancePolicy
protected  String	proxyFamilyName
protected  boolean	trace           Trace level logging flag only set when the proxy is created or read from JNDI

 

Fields inherited from interface org.jboss.invocation.Invoker

ID

 

Constructor Summary

HttpInvokerProxyHA()

HttpInvokerProxyHA(ArrayList targets, long viewId, LoadBalancePolicy policy, String proxyFamilyName)

 

Method Summary
FamilyClusterInfo	getClusterInfo()
Object	getRemoteTarget()
Object	getRemoteTarget(org.jboss.invocation.Invocation invocationBasedRouting)
String	getServerHostName()
Object	invoke(org.jboss.invocation.Invocation invocation)           This method builds a MarshalledInvocation from the invocation passed in and then does a post to the target URL.
void	readExternal(ObjectInput in)           Un-externalize this instance.
void	remoteTargetHasFailed(Object target)
protected  void	removeDeadTarget(Object target)
protected  void	resetView()
protected  int	totalNumberOfTargets()
void	updateClusterInfo(ArrayList targets, long viewId)
void	writeExternal(ObjectOutput out)           Externalize this instance.

 

Methods inherited from class java.lang.Object

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

 

Field Detail

loadBalancePolicy

protected LoadBalancePolicy loadBalancePolicy

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proxyFamilyName

protected String proxyFamilyName

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familyClusterInfo

protected FamilyClusterInfo familyClusterInfo

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trace

protected transient boolean trace

Trace level logging flag only set when the proxy is created or read from JNDI

Constructor Detail

HttpInvokerProxyHA

public HttpInvokerProxyHA()

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HttpInvokerProxyHA

public HttpInvokerProxyHA(ArrayList targets,
                          long viewId,
                          LoadBalancePolicy policy,
                          String proxyFamilyName)

Parameters:

targets - the list of URLs through which clients should contact the InvokerServlet.

policy - the policy for choosing among targets ClusteringTargetsRepository under which this proxy is to be stored

proxyFamilyName - the name into the

Method Detail

updateClusterInfo

public void updateClusterInfo(ArrayList targets,
                              long viewId)

Specified by:

updateClusterInfo in interface InvokerProxyHA

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getServerHostName

public String getServerHostName()
                         throws Exception

Specified by:

getServerHostName in interface org.jboss.invocation.Invoker

Throws:

Exception

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getClusterInfo

public FamilyClusterInfo getClusterInfo()

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getRemoteTarget

public Object getRemoteTarget()

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getRemoteTarget

public Object getRemoteTarget(org.jboss.invocation.Invocation invocationBasedRouting)

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remoteTargetHasFailed

public void remoteTargetHasFailed(Object target)

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totalNumberOfTargets

protected int totalNumberOfTargets()

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removeDeadTarget

protected void removeDeadTarget(Object target)

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resetView

protected void resetView()

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invoke

public Object invoke(org.jboss.invocation.Invocation invocation)
              throws Exception

This method builds a MarshalledInvocation from the invocation passed in and then does a post to the target URL.

Specified by:

invoke in interface org.jboss.invocation.Invoker

Throws:

Exception

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writeExternal

public void writeExternal(ObjectOutput out)
                   throws IOException

Externalize this instance.

Specified by:

writeExternal in interface Externalizable

Throws:

IOException

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readExternal

public void readExternal(ObjectInput in)
                  throws IOException,
                         ClassNotFoundException

Un-externalize this instance.

Specified by:

readExternal in interface Externalizable

Throws:

IOException

ClassNotFoundException

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