private void shutdownConsoleCommunication(ConsoleCommunication consoleCommunication) {
if (consoleCommunication != null) {
consoleCommunication.shutdown();
}
m_consoleListener.discardMessages(ConsoleListener.ANY);
}
/**
* Run the Grinder agent process.
*
* @throws GrinderException If an error occurs.
*/
public void run() throws GrinderException {
StartGrinderMessage startMessage = null;
ConsoleCommunication consoleCommunication = null;
try {
while (true) {
m_logger.info(GrinderBuild.getName());
ScriptLocation script = null;
GrinderProperties properties;
do {
properties =
createAndMergeProperties(startMessage != null ? startMessage.getProperties() : null);
m_agentIdentity.setName(properties.getProperty("grinder.hostID", getHostName()));
final Connector connector =
properties.getBoolean("grinder.useConsole", true)
? m_connectorFactory.create(properties)
: null;
// We only reconnect if the connection details have changed.
if (consoleCommunication != null
&& !consoleCommunication.getConnector().equals(connector)) {
shutdownConsoleCommunication(consoleCommunication);
consoleCommunication = null;
// Accept any startMessage from previous console - see bug 2092881.
}
if (consoleCommunication == null && connector != null) {
try {
consoleCommunication = new ConsoleCommunication(connector);
consoleCommunication.start();
m_logger.info("connected to console at {}", connector.getEndpointAsString());
} catch (CommunicationException e) {
if (m_proceedWithoutConsole) {
m_logger.warn(
"{}, proceeding without the console; set "
+ "grinder.useConsole=false to disable this warning.",
e.getMessage());
} else {
m_logger.error(e.getMessage());
return;
}
}
}
if (consoleCommunication != null && startMessage == null) {
m_logger.info("waiting for console signal");
m_consoleListener.waitForMessage();
if (m_consoleListener.received(ConsoleListener.START)) {
startMessage = m_consoleListener.getLastStartGrinderMessage();
continue; // Loop to handle new properties.
} else {
break; // Another message, check at end of outer while loop.
}
}
if (startMessage != null) {
final GrinderProperties messageProperties = startMessage.getProperties();
final Directory fileStoreDirectory = m_fileStore.getDirectory();
// Convert relative path to absolute path.
messageProperties.setAssociatedFile(
fileStoreDirectory.getFile(messageProperties.getAssociatedFile()));
final File consoleScript =
messageProperties.resolveRelativeFile(
messageProperties.getFile(
GrinderProperties.SCRIPT, GrinderProperties.DEFAULT_SCRIPT));
// We only fall back to the agent properties if the start message
// doesn't specify a script and there is no default script.
if (messageProperties.containsKey(GrinderProperties.SCRIPT)
|| consoleScript.canRead()) {
// The script directory may not be the file's direct parent.
script = new ScriptLocation(fileStoreDirectory, consoleScript);
}
m_agentIdentity.setNumber(startMessage.getAgentNumber());
} else {
m_agentIdentity.setNumber(-1);
}
if (script == null) {
final File scriptFile =
properties.resolveRelativeFile(
properties.getFile(GrinderProperties.SCRIPT, GrinderProperties.DEFAULT_SCRIPT));
script = new ScriptLocation(scriptFile);
}
if (!script.getFile().canRead()) {
m_logger.error("The script file '" + script + "' does not exist or is not readable.");
script = null;
break;
}
} while (script == null);
if (script != null) {
final String jvmArguments = properties.getProperty("grinder.jvm.arguments");
final WorkerFactory workerFactory;
if (!properties.getBoolean("grinder.debug.singleprocess", false)) {
final WorkerProcessCommandLine workerCommandLine =
new WorkerProcessCommandLine(
properties, System.getProperties(), jvmArguments, script.getDirectory());
m_logger.info("Worker process command line: {}", workerCommandLine);
workerFactory =
new ProcessWorkerFactory(
workerCommandLine,
m_agentIdentity,
m_fanOutStreamSender,
consoleCommunication != null,
script,
properties);
} else {
m_logger.info("DEBUG MODE: Spawning threads rather than processes");
if (jvmArguments != null) {
m_logger.warn(
"grinder.jvm.arguments ({}) ignored in single process mode", jvmArguments);
}
workerFactory =
new DebugThreadWorkerFactory(
m_agentIdentity,
m_fanOutStreamSender,
consoleCommunication != null,
script,
properties);
}
final WorkerLauncher workerLauncher =
new WorkerLauncher(
properties.getInt("grinder.processes", 1),
workerFactory,
m_eventSynchronisation,
m_logger);
final int increment = properties.getInt("grinder.processIncrement", 0);
if (increment > 0) {
final boolean moreProcessesToStart =
workerLauncher.startSomeWorkers(
properties.getInt("grinder.initialProcesses", increment));
if (moreProcessesToStart) {
final int incrementInterval =
properties.getInt("grinder.processIncrementInterval", 60000);
final RampUpTimerTask rampUpTimerTask =
new RampUpTimerTask(workerLauncher, increment);
m_timer.scheduleAtFixedRate(rampUpTimerTask, incrementInterval, incrementInterval);
}
} else {
workerLauncher.startAllWorkers();
}
// Wait for a termination event.
synchronized (m_eventSynchronisation) {
final long maximumShutdownTime = 20000;
long consoleSignalTime = -1;
while (!workerLauncher.allFinished()) {
if (consoleSignalTime == -1
&& m_consoleListener.checkForMessage(
ConsoleListener.ANY ^ ConsoleListener.START)) {
workerLauncher.dontStartAnyMore();
consoleSignalTime = System.currentTimeMillis();
}
if (consoleSignalTime >= 0
&& System.currentTimeMillis() - consoleSignalTime > maximumShutdownTime) {
m_logger.info("forcibly terminating unresponsive processes");
// destroyAllWorkers() prevents further workers from starting.
workerLauncher.destroyAllWorkers();
}
m_eventSynchronisation.waitNoInterrruptException(maximumShutdownTime);
}
}
workerLauncher.shutdown();
}
if (consoleCommunication == null) {
break;
} else {
// Ignore any pending start messages.
m_consoleListener.discardMessages(ConsoleListener.START);
if (!m_consoleListener.received(ConsoleListener.ANY)) {
// We've got here naturally, without a console signal.
m_logger.info("finished, waiting for console signal");
m_consoleListener.waitForMessage();
}
if (m_consoleListener.received(ConsoleListener.START)) {
startMessage = m_consoleListener.getLastStartGrinderMessage();
} else if (m_consoleListener.received(ConsoleListener.STOP | ConsoleListener.SHUTDOWN)) {
break;
} else {
// ConsoleListener.RESET or natural death.
startMessage = null;
}
}
}
} finally {
shutdownConsoleCommunication(consoleCommunication);
}
}