private PossiblyLimitedTopDocs getTopDocs(Query query, Sort sort) throws IOException {
final TopFieldCollector topCollector =
TopFieldCollector.create(sort, maxHits, true, false, false, false);
final Counter clock = Counter.newCounter(true);
final int waitMillis = 1000;
// TODO: if we interrupt the whole thread anyway, do we still need the TimeLimitingCollector?
final TimeLimitingCollector collector =
new TimeLimitingCollector(topCollector, clock, maxSearchTimeMillis / waitMillis);
collector.setBaseline(0);
final Thread counterThread =
new Thread() {
@Override
public void run() {
final long startTime = System.currentTimeMillis();
while (true) {
final long runTimeMillis = System.currentTimeMillis() - startTime;
if (runTimeMillis > maxSearchTimeMillis) {
// make sure there's no lingering thread for too long
return;
}
clock.addAndGet(1);
try {
Thread.sleep(waitMillis);
} catch (InterruptedException e) {
throw new RuntimeException(e);
}
}
}
};
counterThread.setName("LuceneSearchTimeoutThread");
counterThread.start();
boolean timeLimitActivated = false;
try {
indexSearcher.search(query, collector);
} catch (TimeLimitingCollector.TimeExceededException e) {
timeLimitActivated = true;
}
return new PossiblyLimitedTopDocs(topCollector.topDocs(), timeLimitActivated);
}
