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/*
*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*
*/
package org.apache.qpid.server.queue;
import org.apache.qpid.server.cluster.MemberHandle;
import org.apache.qpid.server.cluster.GroupManager;
import org.apache.qpid.server.cluster.SimpleSendable;
import org.apache.qpid.AMQException;
class RemoteSubscriptionImpl implements Subscription, WeightedSubscriptionManager
{
private final GroupManager _groupMgr;
private final MemberHandle _peer;
private boolean _suspended;
private int _count;
RemoteSubscriptionImpl(GroupManager groupMgr, MemberHandle peer)
{
_groupMgr = groupMgr;
_peer = peer;
}
synchronized void increment()
{
_count++;
}
synchronized boolean decrement()
{
return --_count <= 0;
}
public void send(AMQMessage msg, AMQQueue queue)
{
try
{
_groupMgr.send(_peer, new SimpleSendable(msg.getPayload()));
}
catch (AMQException e)
{
//TODO: handle exceptions properly...
e.printStackTrace();
}
}
public synchronized void setSuspended(boolean suspended)
{
_suspended = suspended;
}
public synchronized boolean isSuspended()
{
return _suspended;
}
public synchronized int getWeight()
{
return _count;
}
public boolean hasActiveSubscribers()
{
return getWeight() == 0;
}
public Subscription nextSubscriber(AMQMessage msg)
{
return this;
}
public void queueDeleted(AMQQueue queue)
{
if(queue instanceof ClusteredQueue)
{
((ClusteredQueue) queue).removeAllRemoteSubscriber(_peer);
}
}
}
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