/*
* JBoss, Home of Professional Open Source.
* Copyright 2006, 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.javagroups.protocols;
import org.jgroups.Event;
import org.jgroups.Message;
import org.jgroups.stack.Protocol;
import org.jboss.logging.Logger;
import java.util.Properties;
import java.util.Map;
import java.util.Iterator;
/**
* A trival implementation of Protocol that traces all activity through
* it to its logger. This should be inserted between any two protocols
* you which to view the events between. Its supports a name property that
* allows you to insert the element multiple times in a stack to trace
* multiple protocols. An example config for the ClusterPartition for such
* a usage is:
*
<pre>
<mbean code="org.jboss.ha.framework.server.ClusterPartition"
name="jboss:service=JNDITestPartition">
<!-- -->
<attribute name="PartitionName">JNDITestPartition</attribute>
<attribute name="PartitionConfig">
<Config>
<TCP start_port="50001" bind_addr="172.17.66.55" />
<org.jboss.jgroups.protocols.EVENT_TRACE name="TCP-TCPPING-TRACE"
up_thread="false" down_thread="false" />
<TCPPING initial_hosts="lamia[50001]"
port_range="1" timeout="15000"
up_thread="false" down_thread="false" />
<MERGE2 min_interval="5000" max_interval="20000" />
<FD max_tries="4" timeout="15000" />
<VERIFY_SUSPECT timeout="15000" />
<pbcast.STABLE desired_avg_gossip="20000" />
<pbcast.NAKACK gc_lag="50" retransmit_timeout="600,1200,2400,4800" />
<org.jboss.jgroups.protocols.EVENT_TRACE name="NAKACK-GMS-TRACE"
up_thread="false" down_thread="false" />
<pbcast.GMS join_timeout="15000" join_retry_timeout="5000"
shun="false" print_local_addr="true" />
<pbcast.STATE_TRANSFER />
</Config>
</attribute>
</mbean>
</pre>
* @author Scott.Stark@jboss.org
* @version $Revision: 57188 $
*/
public class EVENT_TRACE extends Protocol
{
private String name = "EVENT_TRACE";
private Logger log;
public String getName()
{
return name;
}
/**
* @param props
* @return
*/
public boolean setProperties(Properties props)
{
super.setProperties(props);
name = props.getProperty("name", name);
log = Logger.getLogger("org.jboss.jgroups."+name);
return true;
}
public void up(Event event)
{
if( log.isTraceEnabled() )
{
log.trace("up, event="+event);
if( event.getType() == Event.MSG )
{
Message msg = (Message) event.getArg();
msg.getHeaders();
log.trace("up, MsgHeader: "+printEventMsg(msg));
}
}
// Pass up the protocol stack
passUp(event);
}
public void down(Event event)
{
if( log.isTraceEnabled() )
{
log.trace("down, event="+event);
if( event.getType() == Event.MSG )
{
Message msg = (Message) event.getArg();
log.trace("down, MsgHeader: "+printEventMsg(msg));
}
}
// Pass down the protocol stack
passDown(event);
}
public String printEventMsg(Message msg)
{
StringBuffer sb = new StringBuffer();
Map.Entry entry;
Map headers = msg.getHeaders();
if (headers != null)
{
Iterator iter = headers.entrySet().iterator();
while( iter.hasNext() )
{
entry = (Map.Entry) iter.next();
Object key = entry.getKey();
Object value = entry.getValue();
sb.append(key);
sb.append(", value(");
sb.append(value.getClass());
sb.append("): ");
sb.append(value.toString());
sb.append("\n");
}
}
return sb.toString();
}
} |