| /** |
| * 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 storm.kafka; |
| |
| import backtype.storm.tuple.Fields; |
| import backtype.storm.tuple.Values; |
| |
| import java.nio.ByteBuffer; |
| import java.util.List; |
| |
| public class StringMessageAndMetadataScheme extends StringScheme implements MessageMetadataScheme { |
| private static final long serialVersionUID = -5441841920447947374L; |
| |
| public static final String STRING_SCHEME_PARTITION_KEY = "partition"; |
| public static final String STRING_SCHEME_OFFSET = "offset"; |
| |
| @Override |
| public List<Object> deserializeMessageWithMetadata(ByteBuffer message, Partition partition, long offset) { |
| String stringMessage = StringScheme.deserializeString(message); |
| return new Values(stringMessage, partition.partition, offset); |
| } |
| |
| @Override |
| public Fields getOutputFields() { |
| return new Fields(STRING_SCHEME_KEY, STRING_SCHEME_PARTITION_KEY, STRING_SCHEME_OFFSET); |
| } |
| |
| } |