/**
* Copyright 2016 Yahoo Inc.
*
* Licensed 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 com.yahoo.pulsar.storm;
import java.io.Serializable;
import com.yahoo.pulsar.client.api.Message;
import backtype.storm.topology.OutputFieldsDeclarer;
import backtype.storm.tuple.Values;
public interface MessageToValuesMapper extends Serializable {
/**
* Convert {@link com.yahoo.pulsar.client.api.Message} to tuple values.
*
* @param msg
* @return
*/
public Values toValues(Message msg);
/**
* Declare the output schema for the spout.
*
* @param declarer
*/
public void declareOutputFields(OutputFieldsDeclarer declarer);
}