org.elasticsearch.common.blobstore.fs.FsBlobStore Maven / Gradle / Ivy
Go to download
Show more of this group Show more artifacts with this name
Show all versions of elasticsearch Show documentation
Show all versions of elasticsearch Show documentation
Elasticsearch subproject :server
/*
* Licensed to Elastic Search and Shay Banon under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. Elastic Search 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;
/**
* @author kimchy (shay.banon)
*/
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 = path.mkdirs();
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);
f.mkdirs();
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;
}
}