Java Code Examples for com.twitter.util.Future#addEventListener()

The following examples show how to use com.twitter.util.Future#addEventListener() . You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example. You may check out the related API usage on the sidebar.

Example 1

Source File: FutureUtils.java From distributedlog with Apache License 2.0

6 votes

/**
 * Ignore exception from the <i>future</i> and log <i>errorMsg</i> on exceptions.
 *
 * @param future the original future
 * @param errorMsg the error message to log on exceptions
 * @return a transformed future ignores exceptions
 */
public static <T> Promise<Void> ignore(Future<T> future, final String errorMsg) {
    final Promise<Void> promise = new Promise<Void>();
    future.addEventListener(new FutureEventListener<T>() {
        @Override
        public void onSuccess(T value) {
            setValue(promise, null);
        }

        @Override
        public void onFailure(Throwable cause) {
            if (null != errorMsg) {
                logger.error(errorMsg, cause);
            }
            setValue(promise, null);
        }
    });
    return promise;
}

Example 2

Source File: WriterWorker.java From distributedlog with Apache License 2.0

6 votes

@Override
public void run() {
    LOG.info("Started writer {}.", idx);
    while (running) {
        rateLimiter.getLimiter().acquire(batchSize);
        String streamName = streamNames.get(random.nextInt(numStreams));
        final long requestMillis = System.currentTimeMillis();
        final List<ByteBuffer> data = buildBufferList(batchSize, requestMillis, messageSizeBytes);
        if (null == data) {
            break;
        }
        List<Future<DLSN>> results = dlc.writeBulk(streamName, data);
        for (Future<DLSN> result : results) {
            result.addEventListener(new TimedRequestHandler(streamName, requestMillis));
        }
    }
    dlc.close();
}

Example 3

Source File: FederatedZKLogMetadataStore.java From distributedlog with Apache License 2.0

6 votes

private <T> Future<T> postStateCheck(Future<T> future) {
    final Promise<T> postCheckedPromise = new Promise<T>();
    future.addEventListener(new FutureEventListener<T>() {
        @Override
        public void onSuccess(T value) {
            if (duplicatedLogFound.get()) {
                postCheckedPromise.setException(new UnexpectedException("Duplicate log found under " + namespace));
            } else {
                postCheckedPromise.setValue(value);
            }
        }

        @Override
        public void onFailure(Throwable cause) {
            postCheckedPromise.setException(cause);
        }
    });
    return postCheckedPromise;
}

Example 4

Source File: FutureUtils.java From distributedlog with Apache License 2.0

6 votes

/**
 * Ignore exception from the <i>future</i> and log <i>errorMsg</i> on exceptions
 *
 * @param future the original future
 * @param errorMsg the error message to log on exceptions
 * @return a transformed future ignores exceptions
 */
public static <T> Promise<Void> ignore(Future<T> future, final String errorMsg) {
    final Promise<Void> promise = new Promise<Void>();
    future.addEventListener(new FutureEventListener<T>() {
        @Override
        public void onSuccess(T value) {
            setValue(promise, null);
        }

        @Override
        public void onFailure(Throwable cause) {
            if (null != errorMsg) {
                logger.error(errorMsg, cause);
            }
            setValue(promise, null);
        }
    });
    return promise;
}

Example 5

Source File: ZKDistributedLock.java From distributedlog with Apache License 2.0

6 votes

void interruptTryLock(final Future<LockWaiter> tryLockFuture,
                      final Promise<Void> closePromise) {
    if (null == tryLockFuture) {
        unlockInternalLock(closePromise);
    } else {
        tryLockFuture.addEventListener(OrderedFutureEventListener.of(
                new FutureEventListener<LockWaiter>() {
                    @Override
                    public void onSuccess(LockWaiter waiter) {
                        closeWaiter(waiter, closePromise);
                    }
                    @Override
                    public void onFailure(Throwable cause) {
                        unlockInternalLock(closePromise);
                    }
                }, lockStateExecutor, lockPath));
        FutureUtils.cancel(tryLockFuture);
    }
}

Example 6

Source File: WriterWorker.java From distributedlog with Apache License 2.0

6 votes

@Override
public void run() {
    LOG.info("Started writer {}.", idx);
    while (running) {
        rateLimiter.getLimiter().acquire(batchSize);
        String streamName = streamNames.get(random.nextInt(numStreams));
        final long requestMillis = System.currentTimeMillis();
        final List<ByteBuffer> data = buildBufferList(batchSize, requestMillis, messageSizeBytes);
        if (null == data) {
            break;
        }
        List<Future<DLSN>> results = dlc.writeBulk(streamName, data);
        for (Future<DLSN> result : results) {
            result.addEventListener(new TimedRequestHandler(streamName, requestMillis));
        }
    }
    dlc.close();
}

Example 7

Source File: AppendOnlyStreamWriter.java From distributedlog with Apache License 2.0

4 votes

public Future<DLSN> write(byte[] data) {
    requestPos += data.length;
    Future<DLSN> writeResult = logWriter.write(new LogRecord(requestPos, data));
    return writeResult.addEventListener(new WriteCompleteListener(requestPos));
}

Example 8

Source File: TestReader.java From distributedlog with Apache License 2.0

4 votes

private void readNext() {
    Future<LogRecordWithDLSN> record = reader.readNext();
    record.addEventListener(this);
}

Example 9