| /** |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| package com.twitter.distributedlog.kafka; |
| |
| import com.twitter.distributedlog.DLSN; |
| import com.twitter.distributedlog.exceptions.DLInterruptedException; |
| import com.twitter.distributedlog.util.FutureUtils; |
| import com.twitter.util.Duration; |
| import com.twitter.util.FutureEventListener; |
| import org.apache.kafka.clients.producer.Callback; |
| import org.apache.kafka.clients.producer.RecordMetadata; |
| import org.apache.kafka.common.TopicPartition; |
| |
| import java.io.IOException; |
| import java.util.concurrent.ExecutionException; |
| import java.util.concurrent.Future; |
| import java.util.concurrent.TimeUnit; |
| import java.util.concurrent.TimeoutException; |
| |
| class DLFutureRecordMetadata implements Future<RecordMetadata> { |
| |
| private final String topic; |
| private final com.twitter.util.Future<DLSN> dlsnFuture; |
| private final Callback callback; |
| |
| DLFutureRecordMetadata(final String topic, |
| com.twitter.util.Future<DLSN> dlsnFuture, |
| final Callback callback) { |
| this.topic = topic; |
| this.dlsnFuture = dlsnFuture; |
| this.callback = callback; |
| |
| this.dlsnFuture.addEventListener(new FutureEventListener<DLSN>() { |
| @Override |
| public void onFailure(Throwable cause) { |
| callback.onCompletion(null, new IOException(cause)); |
| } |
| |
| @Override |
| public void onSuccess(DLSN value) { |
| callback.onCompletion(new RecordMetadata(new TopicPartition(topic, 0), -1L, -1L), null); |
| } |
| }); |
| } |
| |
| @Override |
| public boolean cancel(boolean mayInterruptIfRunning) { |
| dlsnFuture.cancel(); |
| // it is hard to figure out if it is successful or not. |
| // so return false here. |
| return false; |
| } |
| |
| @Override |
| public boolean isCancelled() { |
| return false; |
| } |
| |
| @Override |
| public boolean isDone() { |
| return dlsnFuture.isDefined(); |
| } |
| |
| @Override |
| public RecordMetadata get() throws InterruptedException, ExecutionException { |
| try { |
| DLSN dlsn = FutureUtils.result(dlsnFuture); |
| // TODO: align the DLSN concepts with kafka concepts |
| return new RecordMetadata(new TopicPartition(topic, 0), -1L, -1L); |
| } catch (DLInterruptedException e) { |
| throw new InterruptedException("Interrupted on waiting for response"); |
| } catch (IOException e) { |
| throw new ExecutionException("Error on waiting for response", e); |
| } |
| } |
| |
| @Override |
| public RecordMetadata get(long timeout, TimeUnit unit) throws InterruptedException, ExecutionException, TimeoutException { |
| try { |
| DLSN dlsn = FutureUtils.result(dlsnFuture, Duration.apply(timeout, unit)); |
| // TODO: align the DLSN concepts with kafka concepts |
| return new RecordMetadata(new TopicPartition(topic, 0), -1L, -1L); |
| } catch (DLInterruptedException e) { |
| throw new InterruptedException("Interrupted on waiting for response"); |
| } catch (IOException e) { |
| throw new ExecutionException("Error on waiting for response", e); |
| } |
| } |
| } |