/**
* Add a job output listener for the current instance of the job
*
* @param listener the listener
*/
public synchronized void addJobOutputListenerToCurrent(JobOutputListener listener) {
// TODO This method has several possible race conditions, but they are all quite rare
ExecutionThread t = current;
if (t == null) {
if (last != null) {
listener.jobOutput(last.output.toString());
}
return;
}
while (t.newOutputListener != null) {
Thread.yield();
if (t != current) {
if (last != null) {
listener.jobOutput(last.output.toString());
}
return;
}
}
String output = t.output.toString();
listener.jobOutput(output);
t.newOutputCharsSent = output.length();
t.newOutputListener = listener;
}
/**
* This main loop iterates over the submitted jobs and creates the corresponding threads that will
* carry the execution of each job segment.
*/
@Override
public void run() {
try {
int jobno = 0;
while (true) {
sleep(20);
synchronized (jobs) {
if (jobs.size() == 0) {
continue;
}
}
TnrsJob job = jobs.get(jobno % jobs.size());
if (job.status().equalsIgnoreCase("idle")) {
ExecutionThread thread = new ExecutionThread(job);
threads.add(thread);
thread.start();
} else if (job.status().equalsIgnoreCase("stopped")) {
jobs.remove(job);
JobHelper.cleanJobData(baseFolder, job);
jobno = 0;
continue;
} else if (job.status().equals("failed")) {
sendFailedJobEmail(job);
job.setStatus("error");
}
jobno++;
if (jobs.size() == 200) {
for (int i = 0; i < threads.size(); i++) {
threads.elementAt(i).join();
}
jobno = 0;
threads.clear();
}
sleep(10);
}
} catch (Exception e) {
log.error(ExceptionUtils.getFullStackTrace(e));
e.printStackTrace();
}
}
/** Start the job and return immediately */
public synchronized void start() {
if (current != null) {
throw new IllegalStateException("The job is already running");
}
executionTime = new Date();
current = new ExecutionThread();
current.start();
}
/**
* Join the execution of the thread
*
* @return true if the job was joined, false otherwise
* @throws InterruptedException if interrupted
*/
public boolean join() throws InterruptedException {
ExecutionThread t = current;
if (t == null) return false;
t.join();
return true;
}
