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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.test.utils;

import java.security.PrivilegedAction;
import java.util.Set;

import javax.security.auth.Subject;

import org.apache.log4j.Logger;

import org.apache.qpid.server.Broker;
import org.apache.qpid.server.BrokerOptions;
import org.apache.qpid.server.security.SecurityManager;
import org.apache.qpid.server.util.Action;

public class InternalBrokerHolder implements BrokerHolder
{
    private static final Logger LOGGER = Logger.getLogger(InternalBrokerHolder.class);

    private Broker _broker;

    private Set<Integer> _portsUsedByBroker;

    public InternalBrokerHolder(Set<Integer> portsUsedByBroker)
    {
        _portsUsedByBroker = portsUsedByBroker;
    }

    @Override
    public void start(BrokerOptions options) throws Exception
    {
        LOGGER.info("Starting internal broker (same JVM)");

        _broker = new Broker(new Action<Integer>()
        {
            @Override
            public void performAction(final Integer object)
            {
                _broker = null;
            }
        });
        _broker.startup(options);
    }

    public void shutdown()
    {
        LOGGER.info("Shutting down Broker instance");

        Subject.doAs(SecurityManager.getSystemTaskSubject("Shutdown"), new PrivilegedAction<Object>()
        {
            @Override
            public Object run()
            {
                if(_broker != null)
                {
                    _broker.shutdown();
                }
                return null;
            }


        });
        waitUntilPortsAreFree();

        LOGGER.info("Broker instance shutdown");
    }

    @Override
    public void kill()
    {
        // Can't kill a internal broker as we would also kill ourselves as we share the same JVM.
        shutdown();
    }

    private void waitUntilPortsAreFree()
    {
        new PortHelper().waitUntilPortsAreFree(_portsUsedByBroker);
    }

    @Override
    public String dumpThreads()
    {
        return TestUtils.dumpThreads();
    }

    @Override
    public String toString()
    {
        return "InternalBrokerHolder [_portsUsedByBroker=" + _portsUsedByBroker + "]";
    }

}