Examples with WriteResponseFuture org.apache.gobblin.writer.WriteResponseFuture used on opensource projects

Example 1 with WriteResponseFuture

use of org.apache.gobblin.writer.WriteResponseFuture in project incubator-gobblin by apache.

the class CouchbaseWriter method write.

@Override
public Future<WriteResponse> write(final D record, final WriteCallback callback) {
    assertRecordWritable(record);
    if (record instanceof TupleDocument) {
        ((TupleDocument) record).content().value1().retain();
    }
    Observable<D> observable = _bucket.async().upsert(record);
    if (callback == null) {
        return new WriteResponseFuture<>(observable.timeout(_operationTimeout, _operationTimeunit).toBlocking().toFuture(), _defaultWriteResponseMapper);
    } else {
        final AtomicBoolean callbackFired = new AtomicBoolean(false);
        final BlockingQueue<Pair<WriteResponse, Throwable>> writeResponseQueue = new ArrayBlockingQueue<>(1);
        final Future<WriteResponse> writeResponseFuture = new Future<WriteResponse>() {

            @Override
            public boolean cancel(boolean mayInterruptIfRunning) {
                return false;
            }

            @Override
            public boolean isCancelled() {
                return false;
            }

            @Override
            public boolean isDone() {
                return callbackFired.get();
            }

            @Override
            public WriteResponse get() throws InterruptedException, ExecutionException {
                Pair<WriteResponse, Throwable> writeResponseThrowablePair = writeResponseQueue.take();
                return getWriteResponseorThrow(writeResponseThrowablePair);
            }

            @Override
            public WriteResponse get(long timeout, TimeUnit unit) throws InterruptedException, ExecutionException, TimeoutException {
                Pair<WriteResponse, Throwable> writeResponseThrowablePair = writeResponseQueue.poll(timeout, unit);
                if (writeResponseThrowablePair == null) {
                    throw new TimeoutException("Timeout exceeded while waiting for future to be done");
                } else {
                    return getWriteResponseorThrow(writeResponseThrowablePair);
                }
            }
        };
        observable.timeout(_operationTimeout, _operationTimeunit).subscribe(new Subscriber<D>() {

            @Override
            public void onCompleted() {
            }

            @Override
            public void onError(Throwable e) {
                callbackFired.set(true);
                writeResponseQueue.add(new Pair<WriteResponse, Throwable>(null, e));
                callback.onFailure(e);
            }

            @Override
            public void onNext(D doc) {
                try {
                    callbackFired.set(true);
                    WriteResponse writeResponse = new GenericWriteResponse<D>(doc);
                    writeResponseQueue.add(new Pair<WriteResponse, Throwable>(writeResponse, null));
                    callback.onSuccess(writeResponse);
                } finally {
                    if (doc instanceof TupleDocument) {
                        ((TupleDocument) doc).content().value1().release();
                    }
                }
            }
        });
        return writeResponseFuture;
    }
}