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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.server.logging;
import org.apache.qpid.client.AMQDestination;
import org.apache.qpid.client.AMQSession;
import org.apache.qpid.framing.AMQShortString;
import org.apache.qpid.server.configuration.ServerConfiguration;
import org.apache.qpid.server.registry.ApplicationRegistry;
import org.apache.qpid.util.FileUtils;
import javax.jms.Connection;
import javax.jms.Queue;
import javax.jms.Session;
public class AlertingTest extends AbstractTestLogging
{
private String VIRTUALHOST = "test";
private Session _session;
private Connection _connection;
private Queue _destination;
private int _numMessages;
private static final int ALERT_LOG_WAIT_PERIOD = 5000;
private static final String MESSAGE_COUNT_ALERT = "MESSAGE_COUNT_ALERT";
public void setUp() throws Exception
{
// Update the configuration to make our virtualhost Persistent.
makeVirtualHostPersistent(VIRTUALHOST);
setConfigurationProperty("virtualhosts.virtualhost." + VIRTUALHOST + ".housekeeping.checkPeriod", "5000");
_numMessages = 50;
// Then we do the normal setup stuff like starting the broker, getting a connection etc.
super.setUp();
setupConnection();
}
@Override
public void tearDown() throws Exception
{
// Ensure queue is clean for next run.
drainQueue(_destination);
super.tearDown();
}
/**
* Create a new connection and ensure taht our destination queue is created
* and bound.
*
* Note that the tests here that restart the broker rely on persistence.
* However, the queue creation here is transient. So the queue will not be
* rebound on restart. Hence the consumer creation here rather than just the
* once.
*
* The persistent messages will recreate the queue but not bind it (as it
* was not a durable queue) However, the consumer creation here will ensure
* that the queue is correctly bound and can receive new messages.
*
* @throws Exception
*/
private void setupConnection()
throws Exception
{
_connection = getConnection();
_session = _connection.createSession(true, Session.SESSION_TRANSACTED);
_destination = _session.createQueue(getTestQueueName());
// Consumer is only used to actually create the destination
_session.createConsumer(_destination).close();
}
/**
* Checks the log file for MESSAGE_COUNT_ALERT, fails() the test if it's not found and
* places the entire contents in the message to help debug cruise control failures.
*
* @throws Exception
*/
private void wasAlertFired() throws Exception
{
if (!waitForMessage(MESSAGE_COUNT_ALERT, ALERT_LOG_WAIT_PERIOD))
{
StringBuffer message = new StringBuffer("Could not find 'MESSAGE_COUNT_ALERT' in log file: " + _monitor.getMonitoredFile().getAbsolutePath());
message.append("\n");
// Add the current contents of the log file to test output
message.append(_monitor.readFile());
// Write the test config file to test output
message.append("Server configuration overrides in use:\n");
message.append(FileUtils.readFileAsString(getTestConfigFile()));
message.append("\nVirtualhost maxMessageCount:\n");
ServerConfiguration config = new ServerConfiguration(_configFile);
config.initialise();
message.append(config.getVirtualHostConfig(VIRTUALHOST).getMaximumMessageCount());
fail(message.toString());
}
}
public void testAlertingReallyWorks() throws Exception
{
// Send 5 messages, make sure that the alert was fired properly.
sendMessage(_session, _destination, _numMessages + 1);
_session.commit();
wasAlertFired();
}
public void testAlertingReallyWorksWithRestart() throws Exception
{
sendMessage(_session, _destination, _numMessages + 1);
_session.commit();
_connection.close();
stopBroker();
// Rest the monitoring clearing the current output file.
_monitor.markDiscardPoint();
startBroker();
wasAlertFired();
}
/**
* Test that if the alert value is change from the previous value we can
* still get alerts.
*
* Test sends two messages to the broker then restarts the broker with new
* configuration.
*
* If the test is running inVM the test validates that the new configuration
* has been applied.
*
* Validates that we only have two messages on the queue and then sends
* enough messages to trigger the alert.
*
* The alert is then validate.
*
*
* @throws Exception
*/
public void testAlertingReallyWorksWithChanges() throws Exception
{
// send some messages and nuke the logs
sendMessage(_session, _destination, 2);
_session.commit();
// To prevent any failover/retry/connection dropped errors
_connection.close();
stopBroker();
_monitor.markDiscardPoint();
// Change max message count to 5, start broker and make sure that that's triggered at the right time
setConfigurationProperty("virtualhosts.virtualhost." + VIRTUALHOST + ".queues.maximumMessageCount", "5");
startBroker();
if (isInternalBroker())
{
assertEquals("Alert Max Msg Count is not correct", 5, ApplicationRegistry.getInstance().getVirtualHostRegistry().
getVirtualHost(VIRTUALHOST).getQueueRegistry().getQueue(new AMQShortString(_destination.getQueueName())).
getMaximumMessageCount());
}
setupConnection();
// Validate the queue depth is as expected
long messageCount = ((AMQSession<?, ?>) _session).getQueueDepth((AMQDestination) _destination);
assertEquals("Broker has invalid message count for test", 2, messageCount);
// Ensure the alert has not occured yet
assertLoggingNotYetOccured(MESSAGE_COUNT_ALERT);
// Trigger the new value
sendMessage(_session, _destination, 3);
_session.commit();
// Validate that the alert occured.
wasAlertFired();
}
}
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