Examples with Watcher org.apache.bookkeeper.common.util.Watcher used on opensource projects

Example 1 with Watcher

use of org.apache.bookkeeper.common.util.Watcher in project bookkeeper by apache.

the class IndexPersistenceMgrTest method testEvictBeforeReleaseRace.

@Test
public void testEvictBeforeReleaseRace() throws Exception {
    IndexPersistenceMgr indexPersistenceMgr = null;
    Watcher<LastAddConfirmedUpdateNotification> watcher = notification -> notification.recycle();
    try {
        indexPersistenceMgr = createIndexPersistenceManager(1);
        indexPersistenceMgr.getFileInfo(1L, masterKey);
        indexPersistenceMgr.getFileInfo(2L, masterKey);
        indexPersistenceMgr.getFileInfo(3L, masterKey);
        indexPersistenceMgr.getFileInfo(4L, masterKey);
        CachedFileInfo fi = indexPersistenceMgr.getFileInfo(1L, masterKey);
        // trigger eviction
        indexPersistenceMgr.getFileInfo(2L, masterKey);
        indexPersistenceMgr.getFileInfo(3L, null);
        indexPersistenceMgr.getFileInfo(4L, null);
        Thread.sleep(1000);
        fi.setFenced();
        fi.release();
        assertTrue(indexPersistenceMgr.isFenced(1));
    } finally {
        if (null != indexPersistenceMgr) {
            indexPersistenceMgr.close();
        }
    }
}

Example 2 with Watcher

use of org.apache.bookkeeper.common.util.Watcher in project bookkeeper by apache.

the class LongPollReadEntryProcessorV3 method getLongPollReadResponse.

private ReadResponse getLongPollReadResponse() {
    if (!shouldReadEntry() && readRequest.hasTimeOut()) {
        if (logger.isTraceEnabled()) {
            logger.trace("Waiting For LAC Update {}", previousLAC);
        }
        final Stopwatch startTimeSw = Stopwatch.createStarted();
        final boolean watched;
        try {
            watched = requestProcessor.bookie.waitForLastAddConfirmedUpdate(ledgerId, previousLAC, this);
        } catch (Bookie.NoLedgerException e) {
            logger.info("No ledger found while longpoll reading ledger {}, previous lac = {}.", ledgerId, previousLAC);
            return buildErrorResponse(StatusCode.ENOLEDGER, startTimeSw);
        } catch (IOException ioe) {
            logger.error("IOException while longpoll reading ledger {}, previous lac = {} : ", ledgerId, previousLAC, ioe);
            return buildErrorResponse(StatusCode.EIO, startTimeSw);
        }
        registerSuccessfulEvent(requestProcessor.longPollPreWaitStats, startTimeSw);
        lastPhaseStartTime.reset().start();
        if (watched) {
            // successfully registered watcher to lac updates
            if (logger.isTraceEnabled()) {
                logger.trace("Waiting For LAC Update {}: Timeout {}", previousLAC, readRequest.getTimeOut());
            }
            synchronized (this) {
                expirationTimerTask = requestTimer.newTimeout(timeout -> {
                    // When the timeout expires just get whatever is the current
                    // readLastConfirmed
                    LongPollReadEntryProcessorV3.this.scheduleDeferredRead(true);
                }, readRequest.getTimeOut(), TimeUnit.MILLISECONDS);
            }
            return null;
        }
    }
    // request doesn't have timeout or fail to wait, proceed to read entry
    return getReadResponse();
}