org.apache.activemq.broker.cluster.ConnectionSplitBroker Maven / Gradle / Ivy
/**
* 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.activemq.broker.cluster;
import java.util.ArrayList;
import java.util.List;
import org.apache.activemq.broker.Broker;
import org.apache.activemq.broker.BrokerFilter;
import org.apache.activemq.broker.ConnectionContext;
import org.apache.activemq.broker.region.Subscription;
import org.apache.activemq.command.ActiveMQDestination;
import org.apache.activemq.command.ConsumerId;
import org.apache.activemq.command.ConsumerInfo;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
* Monitors for client connections that may fail to another broker - but this
* broker isn't aware they've gone. Can occur with network glitches or client
* error
*
*
*/
public class ConnectionSplitBroker extends BrokerFilter{
private static final Logger LOG = LoggerFactory.getLogger(ConnectionSplitBroker.class);
private ListnetworkConsumerList = new ArrayList();
public ConnectionSplitBroker(Broker next) {
super(next);
}
public Subscription addConsumer(ConnectionContext context, ConsumerInfo info)
throws Exception {
ActiveMQDestination dest = info.getDestination();
synchronized (networkConsumerList) {
if (info.isNetworkSubscription()) {
networkConsumerList.add(info);
} else {
if (!networkConsumerList.isEmpty()) {
List gcList = new ArrayList();
for (ConsumerInfo nc : networkConsumerList) {
if (!nc.isNetworkConsumersEmpty()) {
for (ConsumerId id : nc.getNetworkConsumerIds()) {
if (id.equals(info.getConsumerId())) {
nc.removeNetworkConsumerId(id);
if (nc.isNetworkConsumersEmpty()) {
gcList.add(nc);
}
}
}
}
}
for (ConsumerInfo nc : gcList) {
networkConsumerList.remove(nc);
super.removeConsumer(context, nc);
LOG.warn("Removed stale network consumer {}", nc);
}
}
}
}
return super.addConsumer(context, info);
}
public void removeConsumer(ConnectionContext context, ConsumerInfo info) throws Exception {
if (info.isNetworkSubscription()) {
synchronized (networkConsumerList) {
networkConsumerList.remove(info);
}
}
super.removeConsumer(context, info);
}
}