| /** |
| * 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 org.apache.distributedlog.basic; |
| |
| import com.google.common.collect.Lists; |
| import org.apache.distributedlog.DLSN; |
| import org.apache.distributedlog.LogRecordSet; |
| import org.apache.distributedlog.io.CompressionCodec.Type; |
| import org.apache.distributedlog.service.DistributedLogClient; |
| import org.apache.distributedlog.service.DistributedLogClientBuilder; |
| import org.apache.distributedlog.util.FutureUtils; |
| import com.twitter.finagle.thrift.ClientId$; |
| import com.twitter.util.Future; |
| import com.twitter.util.FutureEventListener; |
| import com.twitter.util.Promise; |
| |
| import java.nio.ByteBuffer; |
| import java.util.List; |
| |
| import static com.google.common.base.Charsets.UTF_8; |
| |
| /** |
| * Write multiple record atomically |
| */ |
| public class AtomicWriter { |
| |
| private final static String HELP = "AtomicWriter <finagle-name> <stream> <message>[,<message>]"; |
| |
| public static void main(String[] args) throws Exception { |
| if (args.length < 3) { |
| System.out.println(HELP); |
| return; |
| } |
| |
| String finagleNameStr = args[0]; |
| String streamName = args[1]; |
| String[] messages = new String[args.length - 2]; |
| System.arraycopy(args, 2, messages, 0, messages.length); |
| |
| DistributedLogClient client = DistributedLogClientBuilder.newBuilder() |
| .clientId(ClientId$.MODULE$.apply("atomic-writer")) |
| .name("atomic-writer") |
| .thriftmux(true) |
| .finagleNameStr(finagleNameStr) |
| .build(); |
| |
| final LogRecordSet.Writer recordSetWriter = LogRecordSet.newWriter(16 * 1024, Type.NONE); |
| List<Future<DLSN>> writeFutures = Lists.newArrayListWithExpectedSize(messages.length); |
| for (String msg : messages) { |
| final String message = msg; |
| ByteBuffer msgBuf = ByteBuffer.wrap(msg.getBytes(UTF_8)); |
| Promise<DLSN> writeFuture = new Promise<DLSN>(); |
| writeFuture.addEventListener(new FutureEventListener<DLSN>() { |
| @Override |
| public void onFailure(Throwable cause) { |
| System.out.println("Encountered error on writing data"); |
| cause.printStackTrace(System.err); |
| Runtime.getRuntime().exit(0); |
| } |
| |
| @Override |
| public void onSuccess(DLSN dlsn) { |
| System.out.println("Write '" + message + "' as record " + dlsn); |
| } |
| }); |
| recordSetWriter.writeRecord(msgBuf, writeFuture); |
| writeFutures.add(writeFuture); |
| } |
| FutureUtils.result( |
| client.writeRecordSet(streamName, recordSetWriter) |
| .addEventListener(new FutureEventListener<DLSN>() { |
| @Override |
| public void onFailure(Throwable cause) { |
| recordSetWriter.abortTransmit(cause); |
| System.out.println("Encountered error on writing data"); |
| cause.printStackTrace(System.err); |
| Runtime.getRuntime().exit(0); |
| } |
| |
| @Override |
| public void onSuccess(DLSN dlsn) { |
| recordSetWriter.completeTransmit( |
| dlsn.getLogSegmentSequenceNo(), |
| dlsn.getEntryId(), |
| dlsn.getSlotId()); |
| } |
| }) |
| ); |
| FutureUtils.result(Future.collect(writeFutures)); |
| client.close(); |
| } |
| } |