org.elasticsearch.index.store.distributor.Distributor Maven / Gradle / Ivy
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* Licensed to Elasticsearch under one or more contributor
* license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright
* ownership. Elasticsearch 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
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*/
package org.elasticsearch.index.store.distributor;
import org.apache.lucene.store.Directory;
/**
* Keeps track of available directories and selects a directory
* based on some distribution strategy
*/
public interface Distributor {
/**
* Returns primary directory (typically first directory in the list)
*/
Directory primary();
/**
* Returns all directories
*/
Directory[] all();
/**
* Selects one of the directories based on distribution strategy
*/
Directory any();
}