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Storm Spouts for Apache Kafka

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/**
 * 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.mapper;

import backtype.storm.tuple.Tuple;
import storm.trident.tuple.TridentTuple;

import java.io.Serializable;

public interface TridentTupleToKafkaMapper  extends Serializable {
    K getKeyFromTuple(TridentTuple tuple);
    V getMessageFromTuple(TridentTuple tuple);
}