NioFsDirectoryService.java

/*
 * Licensed to ElasticSearch and Shay Banon 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
 * under the License.
 */

package org.elasticsearch.index.store.fs;

import org.apache.lucene.store.Directory;
import org.apache.lucene.store.XNIOFSDirectory;
import org.elasticsearch.common.inject.Inject;
import org.elasticsearch.common.io.FileSystemUtils;
import org.elasticsearch.common.settings.Settings;
import org.elasticsearch.index.settings.IndexSettings;
import org.elasticsearch.index.shard.ShardId;
import org.elasticsearch.index.store.IndexStore;

import java.io.File;
import java.io.IOException;

/**
 */
public class NioFsDirectoryService extends FsDirectoryService {

    @Inject
    public NioFsDirectoryService(ShardId shardId, @IndexSettings Settings indexSettings, IndexStore indexStore) {
        super(shardId, indexSettings, indexStore);
    }

    @Override
    public Directory[] build() throws IOException {
        File[] locations = indexStore.shardIndexLocations(shardId);
        Directory[] dirs = new Directory[locations.length];
        for (int i = 0; i < dirs.length; i++) {
            FileSystemUtils.mkdirs(locations[i]);
            dirs[i] = new XNIOFSDirectory(locations[i], buildLockFactory(), this, this);
        }
        return dirs;
    }
}