/*
* 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.common.blobstore.fs;
import org.elasticsearch.common.blobstore.BlobPath;
import org.elasticsearch.common.blobstore.BlobStore;
import org.elasticsearch.common.blobstore.BlobStoreException;
import org.elasticsearch.common.blobstore.ImmutableBlobContainer;
import org.elasticsearch.common.component.AbstractComponent;
import org.elasticsearch.common.io.FileSystemUtils;
import org.elasticsearch.common.settings.Settings;
import org.elasticsearch.common.unit.ByteSizeUnit;
import org.elasticsearch.common.unit.ByteSizeValue;
import java.io.File;
import java.util.concurrent.Executor;
/**
*
*/
public class FsBlobStore extends AbstractComponent implements BlobStore {
private final Executor executor;
private final File path;
private final int bufferSizeInBytes;
public FsBlobStore(Settings settings, Executor executor, File path) {
super(settings);
this.path = path;
if (!path.exists()) {
boolean b = FileSystemUtils.mkdirs(path);
if (!b) {
throw new BlobStoreException("Failed to create directory at [" + path + "]");
}
}
if (!path.isDirectory()) {
throw new BlobStoreException("Path is not a directory at [" + path + "]");
}
this.bufferSizeInBytes = (int) settings.getAsBytesSize("buffer_size", new ByteSizeValue(100, ByteSizeUnit.KB)).bytes();
this.executor = executor;
}
@Override
public String toString() {
return path.toString();
}
public File path() {
return path;
}
public int bufferSizeInBytes() {
return this.bufferSizeInBytes;
}
public Executor executor() {
return executor;
}
@Override
public ImmutableBlobContainer immutableBlobContainer(BlobPath path) {
return new FsImmutableBlobContainer(this, path, buildAndCreate(path));
}
@Override
public void delete(BlobPath path) {
FileSystemUtils.deleteRecursively(buildPath(path));
}
@Override
public void close() {
// nothing to do here...
}
private synchronized File buildAndCreate(BlobPath path) {
File f = buildPath(path);
FileSystemUtils.mkdirs(f);
return f;
}
private File buildPath(BlobPath path) {
String[] paths = path.toArray();
if (paths.length == 0) {
return path();
}
File blobPath = new File(this.path, paths[0]);
if (paths.length > 1) {
for (int i = 1; i < paths.length; i++) {
blobPath = new File(blobPath, paths[i]);
}
}
return blobPath;
}
}