/**
*
* Copyright 2004 Protique Ltd
*
* Licensed 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.codehaus.activemq.service.impl;
import EDU.oswego.cs.dl.util.concurrent.ConcurrentHashMap;
import org.codehaus.activemq.broker.BrokerClient;
import org.codehaus.activemq.filter.DestinationMap;
import org.codehaus.activemq.filter.Filter;
import org.codehaus.activemq.message.ActiveMQDestination;
import org.codehaus.activemq.message.ConsumerInfo;
import org.codehaus.activemq.service.DeadLetterPolicy;
import org.codehaus.activemq.service.Dispatcher;
import org.codehaus.activemq.service.Subscription;
import org.codehaus.activemq.service.SubscriptionContainer;
import org.codehaus.activemq.service.RedeliveryPolicy;
import java.util.HashSet;
import java.util.Iterator;
import java.util.Map;
import java.util.Set;
/**
* A default RAM only implementation of the {@link SubscriptionContainer}
*
* @version $Revision: 1.4 $
*/
public class SubscriptionContainerImpl implements SubscriptionContainer {
private Map subscriptions;
private DestinationMap destinationIndex = new DestinationMap();
private RedeliveryPolicy redeliveryPolicy;
private DeadLetterPolicy deadLetterPolicy;
public SubscriptionContainerImpl(RedeliveryPolicy redeliveryPolicy,DeadLetterPolicy deadLetterPolicy) {
this(new ConcurrentHashMap(), redeliveryPolicy,deadLetterPolicy);
}
public SubscriptionContainerImpl(Map subscriptions, RedeliveryPolicy redeliveryPolicy,DeadLetterPolicy deadLetterPolicy) {
this.subscriptions = subscriptions;
this.redeliveryPolicy = redeliveryPolicy;
this.deadLetterPolicy = deadLetterPolicy;
}
public String toString() {
return super.toString() + "[size:" + subscriptions.size() + "]";
}
public RedeliveryPolicy getRedeliveryPolicy() {
return redeliveryPolicy;
}
public DeadLetterPolicy getDeadLetterPolicy(){
return deadLetterPolicy;
}
public Subscription getSubscription(String consumerId) {
return (Subscription) subscriptions.get(consumerId);
}
public Subscription removeSubscription(String consumerId) {
Subscription subscription = (Subscription) subscriptions.remove(consumerId);
if (subscription != null) {
destinationIndex.remove(subscription.getDestination(), subscription);
}
return subscription;
}
public Set getSubscriptions(ActiveMQDestination destination) {
Object answer = destinationIndex.get(destination);
if (answer instanceof Set) {
return (Set) answer;
}
else {
Set set = new HashSet(1);
set.add(answer);
return set;
}
}
public Iterator subscriptionIterator() {
return subscriptions.values().iterator();
}
public Subscription makeSubscription(Dispatcher dispatcher,BrokerClient client, ConsumerInfo info, Filter filter) {
Subscription subscription = createSubscription(dispatcher, client,info, filter);
subscriptions.put(info.getConsumerId(), subscription);
destinationIndex.put(subscription.getDestination(), subscription);
return subscription;
}
protected Subscription createSubscription(Dispatcher dispatcher, BrokerClient client,ConsumerInfo info, Filter filter) {
return new SubscriptionImpl(dispatcher, client,info, filter, getRedeliveryPolicy(),getDeadLetterPolicy());
}
}