/*
* Copyright (c) 1998-2011 Caucho Technology -- all rights reserved
*
* This file is part of Resin(R) Open Source
*
* Each copy or derived work must preserve the copyright notice and this
* notice unmodified.
*
* Resin Open Source is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* Resin Open Source 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, or any warranty
* of NON-INFRINGEMENT. See the GNU General Public License for more
* details.
*
* You should have received a copy of the GNU General Public License
* along with Resin Open Source; if not, write to the
*
* Free Software Foundation, Inc.
* 59 Temple Place, Suite 330
* Boston, MA 02111-1307 USA
*
* @author Scott Ferguson
*/
package com.caucho.bam.broker;
import java.util.concurrent.atomic.AtomicLong;
import com.caucho.bam.actor.AbstractAgent;
import com.caucho.bam.actor.Agent;
import com.caucho.bam.mailbox.Mailbox;
import com.caucho.bam.mailbox.MailboxType;
import com.caucho.bam.mailbox.MultiworkerMailbox;
import com.caucho.bam.mailbox.PassthroughMailbox;
import com.caucho.bam.stream.MessageStream;
import com.caucho.util.Alarm;
/**
* Broker is the hub which routes messages to actors.
*/
abstract public class AbstractManagedBroker
extends AbstractBroker
implements ManagedBroker
{
private final AtomicLong _sequence = new AtomicLong(Alarm.getCurrentTime());
/**
* Adds a mailbox.
*/
@Override
public void addMailbox(Mailbox mailbox)
{
throw new UnsupportedOperationException(getClass().getName());
}
/**
* Removes a mailbox.
*/
@Override
public void removeMailbox(Mailbox mailbox)
{
throw new UnsupportedOperationException(getClass().getName());
}
/**
* Creates an agent
*/
// @Override
public Agent createAgent(MessageStream actorStream)
{
return createAgent(actorStream, MailboxType.DEFAULT);
}
/**
* Creates an agent
*/
// @Override
public Agent createAgent(MessageStream actorStream,
MailboxType mailboxType)
{
Mailbox mailbox = createMailbox(actorStream.getAddress(),
actorStream,
mailboxType);
Agent agent = new AbstractAgent(actorStream.getAddress(),
mailbox,
this);
addMailbox(mailbox);
return agent;
}
protected Mailbox createMailbox(MessageStream actorStream,
MailboxType mailboxType)
{
return createMailbox(actorStream.getAddress(), actorStream, mailboxType);
}
protected Mailbox createMailbox(String address,
MessageStream actorStream,
MailboxType mailboxType)
{
switch (mailboxType) {
case NON_QUEUED:
return new PassthroughMailbox(address, actorStream, this);
default:
return new MultiworkerMailbox(address, actorStream, this, 5);
}
}
@Override
public Mailbox createClient(Mailbox next,
String uid,
String resource)
{
String address = null;
if (uid == null)
uid = Long.toHexString(_sequence.incrementAndGet());
if (uid.indexOf('@') < 0)
uid = uid + '@' + getAddress();
if (resource != null) {
address = uid + "/" + resource;
Mailbox mailbox = getMailbox(address);
if (mailbox != null)
address = uid + "/" + resource + "-" + Long.toHexString(_sequence.incrementAndGet());
}
else {
address = uid + "/" + Long.toHexString(_sequence.incrementAndGet());
}
Mailbox mailbox = new PassthroughMailbox(address, next, this);
addMailbox(mailbox);
return mailbox;
}
/**
* Returns true if the broker has been closed
*/
@Override
public boolean isClosed()
{
return false;
}
}