/** {@inheritDoc} */
public void run() {
logger.log(Level.FINE, "Starting a consumer for transactions");
notifyThreadJoining();
try {
while (true) {
// wait for the next task, at which point we may get
// interrupted and should therefore return
ScheduledTaskImpl task = (ScheduledTaskImpl) (backingQueue.getNextTask(true));
// run the task, checking if it completed
if (executeTask(task, false, true)) {
// if it's a recurring task, schedule the next run
if (task.isRecurring()) {
long nextStart = task.getStartTime() + task.getPeriod();
task = new ScheduledTaskImpl(task, nextStart);
backingQueue.addTask(task);
}
// if it has dependent tasks, schedule the next one
TaskQueueImpl queue = (TaskQueueImpl) (task.getTaskQueue());
if (queue != null) {
queue.scheduleNextTask();
}
}
}
} catch (InterruptedException ie) {
if (logger.isLoggable(Level.FINE)) {
logger.logThrow(Level.FINE, ie, "Consumer is finishing");
}
} catch (Exception e) {
// this should never happen, since running the task should
// never throw an exception that isn't handled
logger.logThrow(Level.SEVERE, e, "Fatal error for consumer");
} finally {
notifyThreadLeaving();
}
}
