| /** |
| * 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 List<ConsumerInfo>networkConsumerList = new ArrayList<ConsumerInfo>(); |
| 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<ConsumerInfo> gcList = new ArrayList<ConsumerInfo>(); |
| 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); |
| } |
| } |