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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.disttest.controller;
import java.util.Collection;
import java.util.concurrent.CountDownLatch;
import java.util.concurrent.TimeUnit;
import org.apache.qpid.disttest.DistributedTestException;
import org.apache.qpid.disttest.controller.config.Config;
import org.apache.qpid.disttest.controller.config.TestInstance;
import org.apache.qpid.disttest.jms.ControllerJmsDelegate;
import org.apache.qpid.disttest.message.Command;
import org.apache.qpid.disttest.message.CommandType;
import org.apache.qpid.disttest.message.RegisterClientCommand;
import org.apache.qpid.disttest.message.Response;
import org.apache.qpid.disttest.message.StopClientCommand;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
public class Controller
{
private static final Logger LOGGER = LoggerFactory.getLogger(Controller.class);
private final long _registrationTimeout;
private final long _commandResponseTimeout;
private final ControllerJmsDelegate _jmsDelegate;
private volatile CountDownLatch _stopClientsResponseLatch = null;
private Config _config;
private TestRunnerFactory _testRunnerFactory;
private ClientRegistry _clientRegistry;
private long _testResultTimeout = TestRunner.WAIT_FOREVER;
public Controller(final ControllerJmsDelegate jmsDelegate, long registrationTimeout, long commandResponseTimeout)
{
_jmsDelegate = jmsDelegate;
_registrationTimeout = registrationTimeout;
_commandResponseTimeout = commandResponseTimeout;
_testRunnerFactory = new TestRunnerFactory();
_clientRegistry = new ClientRegistry();
_jmsDelegate.addCommandListener(new RegisterClientCommandListener());
_jmsDelegate.addCommandListener(new StopClientResponseListener());
_jmsDelegate.start();
}
public void setConfig(Config config)
{
_config = config;
validateConfiguration();
}
public void awaitClientRegistrations()
{
LOGGER.info("Awaiting client registrations");
final int numberOfAbsentClients = _clientRegistry.awaitClients(_config.getTotalNumberOfClients(), _registrationTimeout);
if (numberOfAbsentClients > 0)
{
String formattedMessage = String.format("Timed out waiting for registrations. Expecting %d more registrations", numberOfAbsentClients);
throw new DistributedTestException(formattedMessage);
}
}
private void validateConfiguration()
{
if (_config == null || _config.getTotalNumberOfClients() == 0)
{
throw new DistributedTestException("No controller config or no clients specified in test config");
}
}
private void awaitStopResponses(CountDownLatch latch, long timeout)
{
String message = "Timed out after %d waiting for stop command responses. Expecting %d more responses.";
try
{
boolean countedDownOK = latch.await(timeout, TimeUnit.MILLISECONDS);
if (!countedDownOK)
{
long latchCount = latch.getCount();
String formattedMessage = String.format(message, timeout, latchCount);
LOGGER.error(formattedMessage);
throw new DistributedTestException(formattedMessage);
}
}
catch (final InterruptedException e)
{
Thread.currentThread().interrupt();
}
}
public void registerClient(final RegisterClientCommand registrationCommand)
{
final String clientName = registrationCommand.getClientName();
_jmsDelegate.registerClient(registrationCommand);
_clientRegistry.registerClient(clientName);
}
void processStopClientResponse(final Response response)
{
// TODO clientRegistry should expose a deregisterClient
_stopClientsResponseLatch.countDown();
if (response.hasError())
{
LOGGER.error("Client " + response.getRegisteredClientName() + " reported exception in response to command : " +
response.getErrorMessage());
}
}
public void stopAllRegisteredClients()
{
Collection<String> registeredClients = _clientRegistry.getClients();
LOGGER.info("Stopping all clients");
_stopClientsResponseLatch = new CountDownLatch(registeredClients.size());
Command command = new StopClientCommand();
for (final String clientName : registeredClients)
{
_jmsDelegate.sendCommandToClient(clientName, command);
}
awaitStopResponses(_stopClientsResponseLatch, _commandResponseTimeout);
LOGGER.info("Stopped all clients");
}
public ResultsForAllTests runAllTests()
{
LOGGER.info("Running all tests");
ResultsForAllTests resultsForAllTests = new ResultsForAllTests();
for (TestInstance testInstance : _config.getTests())
{
ParticipatingClients participatingClients = new ParticipatingClients(_clientRegistry, testInstance.getClientNames());
LOGGER.info("Running test " + testInstance + ". Participating clients: " + participatingClients.getRegisteredNames());
TestRunner runner = _testRunnerFactory.createTestRunner(participatingClients,
testInstance,
_jmsDelegate,
_commandResponseTimeout,
_testResultTimeout);
TestResult testResult = runner.run();
LOGGER.info("Finished test " + testInstance);
resultsForAllTests.add(testResult);
}
return resultsForAllTests;
}
private final class StopClientResponseListener implements CommandListener
{
@Override
public boolean supports(Command command)
{
return command.getType() == CommandType.RESPONSE && ((Response)command).getInReplyToCommandType() == CommandType.STOP_CLIENT;
}
@Override
public void processCommand(Command command)
{
processStopClientResponse((Response)command);
}
}
private final class RegisterClientCommandListener implements
CommandListener
{
@Override
public boolean supports(Command command)
{
return command.getType() == CommandType.REGISTER_CLIENT;
}
@Override
public void processCommand(Command command)
{
registerClient((RegisterClientCommand)command);
}
}
public void setTestResultTimeout(final long testResultTimeout)
{
_testResultTimeout = testResultTimeout;
}
void setClientRegistry(ClientRegistry clientRegistry)
{
_clientRegistry = clientRegistry;
}
void setTestRunnerFactory(TestRunnerFactory factory)
{
if (factory == null)
{
throw new IllegalArgumentException("TestRunnerFactory cannot be null!");
}
_testRunnerFactory = factory;
}
}
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