/*
* JBoss, Home of Professional Open Source.
* Copyright 2008, Red Hat Middleware LLC, and individual contributors
* as indicated by the @author tags. See the copyright.txt file in the
* distribution for a full listing of individual contributors.
*
* This is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as
* published by the Free Software Foundation; either version 2.1 of
* the License, or (at your option) any later version.
*
* This software is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this software; if not, write to the Free
* Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA, or see the FSF site: http://www.fsf.org.
*/
package org.jboss.ha.framework.test;
import java.lang.reflect.Method;
import org.jboss.ha.framework.interfaces.ClusteringTargetsRepository;
import org.jboss.ha.framework.interfaces.FamilyClusterInfo;
import org.jboss.invocation.Invocation;
import org.jboss.invocation.InvocationContext;
import org.jboss.invocation.Invoker;
import org.jboss.invocation.PayloadKey;
import org.jboss.invocation.ServiceUnavailableException;
/**
* Used for testing clustering: mimics an exhausted set of targets.
* This interceptor should be placed between a RetryInterceptor and
* the InvokerInterceptor.
*
* @author brian.stansberry@jboss.com.
* @version $Id: ServiceUnavailableClientInterceptor.java 104446 2010-05-04 16:47:22Z bstansberry@jboss.com $
*/
public class ServiceUnavailableClientInterceptor extends org.jboss.proxy.Interceptor
{
// Constants -----------------------------------------------------
/** The serialVersionUID */
private static final long serialVersionUID = 8830272856328720750L;
// Attributes ----------------------------------------------------
private String proxyFamilyName;
// Static --------------------------------------------------------
// Constructors --------------------------------------------------
public ServiceUnavailableClientInterceptor ()
{
}
// Public --------------------------------------------------------
// Z implementation ----------------------------------------------
// Interceptor overrides ---------------------------------------------------
public Object invoke (Invocation mi) throws Throwable
{
Object data = mi.getValue ("DO_FAIL_DURING_NEXT_CALL");
if (data != null &&
data instanceof java.lang.Boolean &&
data.equals (java.lang.Boolean.TRUE))
{
// Clear the instruction
mi.setValue ("DO_FAIL_DURING_NEXT_CALL", Boolean.FALSE, PayloadKey.AS_IS);
if (proxyFamilyName == null)
{
proxyFamilyName = getProxyFamilyName(mi);
}
// Clear the targets to simulate exhausting them all
FamilyClusterInfo info = ClusteringTargetsRepository.getFamilyClusterInfo(proxyFamilyName);
for (Object target: info.getTargets())
info.removeDeadTarget(target);
throw new ServiceUnavailableException("Service unavailable",
new Exception("Test"));
}
return getNext().invoke(mi);
}
// Package protected ---------------------------------------------
// Protected -----------------------------------------------------
// Private -------------------------------------------------------
// Inner classes -------------------------------------------------
static String getProxyFamilyName(Invocation invocation) throws Exception
{
InvocationContext ctx = invocation.invocationContext;
Invoker invoker = ctx.getInvoker();
// HACK! Get the proxy family name via reflection.
// Works for the known InvokerProxyHA impls
Method m = invoker.getClass().getDeclaredMethod("getProxyFamilyName", new Class[]{});
String proxyFamilyName = (String) m.invoke(invoker, new Object[] {});
return proxyFamilyName;
}
}