qpid/java/broker/src/main/java/org/apache/qpid/server/exchange/TopicExchangeMBean.java

/*
 *
 * 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.exchange;

import org.apache.qpid.management.common.mbeans.annotations.MBeanConstructor;
import org.apache.qpid.management.common.mbeans.annotations.MBeanDescription;
import org.apache.qpid.server.binding.Binding;

import javax.management.JMException;
import javax.management.openmbean.CompositeData;
import javax.management.openmbean.CompositeDataSupport;
import javax.management.openmbean.OpenDataException;
import javax.management.openmbean.TabularData;
import javax.management.openmbean.TabularDataSupport;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

/** TopicExchangeMBean class implements the management interface for the Topic exchanges. */
@MBeanDescription("Management Bean for Topic Exchange")
final class TopicExchangeMBean extends AbstractExchangeMBean<TopicExchange>
{
    private TopicExchange _topicExchange;

    @MBeanConstructor("Creates an MBean for AMQ topic exchange")
    public TopicExchangeMBean(final TopicExchange topicExchange) throws JMException
    {
        super(topicExchange);
        init();
    }

    /** returns exchange bindings in tabular form */
    public TabularData bindings() throws OpenDataException
    {
        TabularDataSupport bindingList = new TabularDataSupport(getBindinglistDataType());
        Map<String, List<String>> bindingData = new HashMap<String, List<String>>();
        for (Binding binding : getExchange().getBindings())
        {
            String key = binding.getBindingKey();
            List<String> queueNames = bindingData.get(key);
            if(queueNames == null)
            {
                queueNames = new ArrayList<String>();
                bindingData.put(key, queueNames);
            }
            queueNames.add(binding.getQueue().getNameShortString().toString());

        }
        for(Map.Entry<String, List<String>> entry : bindingData.entrySet())
        {
            Object[] bindingItemValues = {entry.getKey(), entry.getValue().toArray(new String[entry.getValue().size()]) };
            CompositeData bindingCompositeData =
                    new CompositeDataSupport(getBindingDataType(),
                            COMPOSITE_ITEM_NAMES.toArray(new String[COMPOSITE_ITEM_NAMES.size()]), 
                            bindingItemValues);
            bindingList.put(bindingCompositeData);
        }

        return bindingList;
    }

} // End of MBean class