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Storm Spouts for Apache Kafka

There is a newer version: 1.2.4

/**
 * 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.TopologyContext;
import backtype.storm.tuple.Fields;
import storm.kafka.Partition;
import storm.trident.spout.IPartitionedTridentSpout;

import java.util.Map;
import java.util.UUID;


public class TransactionalTridentKafkaSpout implements IPartitionedTridentSpout {

    TridentKafkaConfig _config;
    String _topologyInstanceId = UUID.randomUUID().toString();

    public TransactionalTridentKafkaSpout(TridentKafkaConfig config) {
        _config = config;
    }


    @Override
    public IPartitionedTridentSpout.Coordinator getCoordinator(Map conf, TopologyContext context) {
        return new storm.kafka.trident.Coordinator(conf, _config);
    }

    @Override
    public IPartitionedTridentSpout.Emitter getEmitter(Map conf, TopologyContext context) {
        return new TridentKafkaEmitter(conf, context, _config, _topologyInstanceId).asTransactionalEmitter();
    }

    @Override
    public Fields getOutputFields() {
        return _config.scheme.getOutputFields();
    }

    @Override
    public Map getComponentConfiguration() {
        return null;
    }
}