java/broker/src/test/java/org/apache/qpid/server/logging/subjects/SubscriptionLogSubjectTest.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.logging.subjects;

import org.apache.qpid.framing.AMQShortString;
import org.apache.qpid.server.AMQChannel;
import org.apache.qpid.server.flow.LimitlessCreditManager;
import org.apache.qpid.server.protocol.InternalTestProtocolSession;
import org.apache.qpid.server.queue.AMQQueue;
import org.apache.qpid.server.queue.MockAMQQueue;
import org.apache.qpid.server.subscription.Subscription;
import org.apache.qpid.server.subscription.SubscriptionFactory;
import org.apache.qpid.server.subscription.SubscriptionFactoryImpl;
import org.apache.qpid.server.util.BrokerTestHelper;
import org.apache.qpid.server.virtualhost.VirtualHost;

/**
 * Validate SubscriptionLogSubjects are logged as expected
 */
public class SubscriptionLogSubjectTest extends AbstractTestLogSubject
{

    private AMQQueue _queue;
    private VirtualHost _testVhost;
    private int _channelID = 1;
    private Subscription _subscription;

    @Override
    public void setUp() throws Exception
    {
        super.setUp();

        InternalTestProtocolSession session = BrokerTestHelper.createSession();
        _testVhost = session.getVirtualHost();

        _queue = new MockAMQQueue("SubscriptionLogSubjectTest");
        ((MockAMQQueue) _queue).setVirtualHost(_testVhost);

        AMQChannel channel = new AMQChannel(session, _channelID, _testVhost.getMessageStore());

        session.addChannel(channel);

        SubscriptionFactory factory = new SubscriptionFactoryImpl();

        _subscription = factory.createSubscription(_channelID, session, new AMQShortString("cTag"),
                                                   false, null, false,
                                                   new LimitlessCreditManager());

        _subscription.setQueue(_queue, false);

        _subject = new SubscriptionLogSubject(_subscription);
    }

    @Override
    public void tearDown() throws Exception
    {
        if (_testVhost != null)
        {
            _testVhost.close();
        }
        super.tearDown();
    }

    /**
     * Validate that the logged Subject  message is as expected:
     * MESSAGE [Blank][sub:0(vh(/test)/qu(SubscriptionLogSubjectTest))] <Log Message>
     *
     * @param message the message whos format needs validation
     */
    @Override
    protected void validateLogStatement(String message)
    {
        String subscriptionSlice = getSlice("sub:"
                                            + _subscription.getSubscriptionID(),
                                            message);

        assertNotNull("Unable to locate subscription 'sub:" +
                      _subscription.getSubscriptionID() + "'");



        // Pull out the qu(..) section from the subscription message
        // Split it into three parts
        // MESSAGE [Blank][sub:0(vh(/
        //                           test)/
        //                                 qu(SubscriptionLogSubjectTest))]
        // Take the last bit and drop off the extra )]        
        String[] parts = message.split("/");
        assertEquals("Message part count wrong", 3, parts.length);
        String subscription = parts[2].substring(0, parts[2].indexOf(")") + 1);

        // Adding the ')' is a bit ugly but SubscriptionLogSubject is the only
        // Subject that nests () and so the simple parser of checking for the
        // next ')' falls down.
        verifyVirtualHost(subscriptionSlice+ ")", _queue.getVirtualHost());

        verifyQueue(subscription, _queue);
    }
}