/** {@inheritDoc} */
@Override
public void run() {
Activator.getLogger().log(Level.FINE, "Starting {0}", ArchiveFetchJob.this); // $NON-NLS-1$
final BenchmarkTimer timer = new BenchmarkTimer();
long samples = 0;
final int bins = Preferences.getPlotBins();
final ArchiveDataSource archives[] = item.getArchiveDataSources();
List<ArchiveDataSource> sourcesWhereChannelDoesntExist = new ArrayList<>();
for (int i = 0; i < archives.length && !cancelled; ++i) {
final ArchiveDataSource archive = archives[i];
final String url = archive.getUrl();
// Display "N/total", using '1' for the first sub-archive.
synchronized (this) {
message =
NLS.bind(
Messages.ArchiveFetchDetailFmt,
new Object[] {archive.getName(), (i + 1), archives.length});
}
try {
final ArchiveReader the_reader;
synchronized (this) {
the_reader = reader = ArchiveRepository.getInstance().getArchiveReader(url);
}
the_reader.enableConcurrency(concurrency);
final ValueIterator value_iter;
try {
if (item.getRequestType() == RequestType.RAW)
value_iter =
the_reader.getRawValues(archive.getKey(), item.getResolvedName(), start, end);
else
value_iter =
the_reader.getOptimizedValues(
archive.getKey(), item.getResolvedName(), start, end, bins);
} catch (UnknownChannelException e) {
// Do not immediately notify about unknown channels. First search for the data in all
// archive
// sources and only report this kind of errors at the end
sourcesWhereChannelDoesntExist.add(archives[i]);
continue;
}
// Get samples into array
final List<VType> result = new ArrayList<VType>();
while (value_iter.hasNext()) result.add(value_iter.next());
samples += result.size();
item.mergeArchivedSamples(the_reader.getServerName(), result);
if (cancelled) break;
value_iter.close();
} catch (Exception ex) { // Tell listener unless it's the result of a 'cancel'?
if (!cancelled) listener.archiveFetchFailed(ArchiveFetchJob.this, archive, ex);
// Continue with the next data source
} finally {
synchronized (this) {
if (reader != null) reader.close();
reader = null;
}
}
}
if (!sourcesWhereChannelDoesntExist.isEmpty() && !cancelled) {
listener.channelNotFound(
ArchiveFetchJob.this,
sourcesWhereChannelDoesntExist.size() < archives.length,
sourcesWhereChannelDoesntExist.toArray(
new ArchiveDataSource[sourcesWhereChannelDoesntExist.size()]));
}
timer.stop();
if (!cancelled) listener.fetchCompleted(ArchiveFetchJob.this);
Activator.getLogger()
.log(
Level.FINE,
"Ended {0} with {1} samples in {2}", //$NON-NLS-1$
new Object[] {ArchiveFetchJob.this, samples, timer});
}
/** Request thread to cancel its operation */
public synchronized void cancel() {
cancelled = true;
synchronized (this) {
if (reader != null) reader.cancel();
}
}
