/*
* Copyright (C) 2015 SoftIndex LLC.
*
* 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 io.datakernel.stream.processor;
/**
* Shares objects to shards with specified algorithm
*
* @param <K> type of object for sharding
*/
public interface Sharder<K> {
/**
* Returns shard key (index of partition to which this object should be sent)
*
* @param object object for sharding
*/
int shard(K object);
}