| /** |
| * 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.trident; |
| |
| import backtype.storm.task.IMetricsContext; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| import storm.kafka.trident.mapper.TridentTupleToKafkaMapper; |
| import storm.kafka.trident.selector.KafkaTopicSelector; |
| import storm.trident.state.State; |
| import storm.trident.state.StateFactory; |
| |
| import java.util.Map; |
| import java.util.Properties; |
| |
| public class TridentKafkaStateFactory implements StateFactory { |
| |
| private static final Logger LOG = LoggerFactory.getLogger(TridentKafkaStateFactory.class); |
| |
| private TridentTupleToKafkaMapper mapper; |
| private KafkaTopicSelector topicSelector; |
| private Properties producerProperties = new Properties(); |
| |
| public TridentKafkaStateFactory withTridentTupleToKafkaMapper(TridentTupleToKafkaMapper mapper) { |
| this.mapper = mapper; |
| return this; |
| } |
| |
| public TridentKafkaStateFactory withKafkaTopicSelector(KafkaTopicSelector selector) { |
| this.topicSelector = selector; |
| return this; |
| } |
| |
| public TridentKafkaStateFactory withProducerProperties(Properties props) { |
| this.producerProperties = props; |
| return this; |
| } |
| |
| @Override |
| public State makeState(Map conf, IMetricsContext metrics, int partitionIndex, int numPartitions) { |
| LOG.info("makeState(partitonIndex={}, numpartitions={}", partitionIndex, numPartitions); |
| TridentKafkaState state = new TridentKafkaState() |
| .withKafkaTopicSelector(this.topicSelector) |
| .withTridentTupleToKafkaMapper(this.mapper); |
| state.prepare(producerProperties); |
| return state; |
| } |
| } |