///////////////////////////////
// Clean-up is called whenever we know that a task will never
// be executed. It is never called on tasks for who DoTaskReal
// has been called (except when rescheduled). Cleanup is also
// called when a task is cancelled.
public void Cleanup ()
{
try {
DoCleanup ();
} catch (Exception ex) {
Logger.Log.Warn (ex, "Caught exception cleaning up task '{0}'", Tag);
} finally {
Reschedule = false;
scheduler = null;
}
}
///////////////////////////////
public void DoTask ()
{
if (! cancelled) {
if (Debug)
Logger.Log.Debug ("Starting task {0}", Tag);
child_task_group = null;
Reschedule = false;
TouchAllTaskGroups ();
Stopwatch sw = new Stopwatch ();
sw.Start ();
try {
DoTaskReal ();
} catch (Exception ex) {
misfires ++;
Logger.Log.Warn (ex,
"Caught exception in DoTaskReal\n" +
" Tag: {0}\n" +
" Creator: {1}\n" +
"Description: {2}\n" +
" Priority: {3} ({4})",
Tag, Creator, Description, Priority, SubPriority);
if (misfires >= MAX_TASK_EXCEPTION) {
Log.Warn ("More than {5} exceptions in DoTaskReal. Disabling further execution of task:\n" +
" Tag: {0}\n" +
" Creator: {1}\n" +
"Description: {2}\n" +
" Priority: {3} ({4})",
Tag, Creator, Description, Priority, SubPriority, MAX_TASK_EXCEPTION);
Cancel ("Exceptions in DoTaskReal");
}
}
sw.Stop ();
if (Debug)
Logger.Log.Debug ("Finished task {0} in {1}", Tag, sw);
if (cancelled) {
return;
} else if (Reschedule) {
++count;
if (Debug)
Log.Debug ("Rescheduling task {0}", Tag);
scheduler.Add (this); // re-add ourselves
} else {
DecrementAllTaskGroups ();
scheduler = null;
}
}
}
public void Schedule (Scheduler scheduler)
{
if (this.cancelled)
return; // do not schedule a cancelled task
// Increment the task groups the first
// time a task is scheduled.
if (this.scheduler == null)
IncrementAllTaskGroups ();
this.timestamp = DateTime.Now;
this.scheduler = scheduler;
this.cancelled = false;
}
static private void ShutdownHook (Scheduler.Task task)
{
try {
Synchronize (SynchronizationTarget.Remote);
// FIXME: This may not be safe to do here
Logger.Log.Debug ("Purging locally synchronized indexes");
Directory.Delete (local_index_dir, true);
} catch (Exception ex) {
Logger.Log.Error (ex, "Caught exception while doing shutdown synchronization");
}
}
////////////////////////////////////////////////////////////////
static private void SynchronizeHook (Scheduler.Task task)
{
try {
Synchronize (SynchronizationTarget.Remote);
} catch (Exception ex) {
Logger.Log.Error (ex, "Caught exception while synchronizing");
}
task.Reschedule = true;
task.TriggerTime = DateTime.Now.AddMinutes (sync_interval_in_minutes);
}
// Ouch! What a name ?!
private void ContinueIndexerIndexableIndexing (Scheduler.Task task)
{
Flush (true);
}