org.elasticsearch.common.blobstore.fs.FsBlobStore Maven / Gradle / Ivy
/*
* Copyright Elasticsearch B.V. and/or licensed to Elasticsearch B.V. under one
* or more contributor license agreements. Licensed under the Elastic License
* 2.0 and the Server Side Public License, v 1; you may not use this file except
* in compliance with, at your election, the Elastic License 2.0 or the Server
* Side Public License, v 1.
*/
package org.elasticsearch.common.blobstore.fs;
import org.elasticsearch.ElasticsearchException;
import org.elasticsearch.common.blobstore.BlobContainer;
import org.elasticsearch.common.blobstore.BlobPath;
import org.elasticsearch.common.blobstore.BlobStore;
import java.io.IOException;
import java.nio.file.Files;
import java.nio.file.Path;
import java.util.List;
public class FsBlobStore implements BlobStore {
private final Path path;
private final int bufferSizeInBytes;
private final boolean readOnly;
public FsBlobStore(int bufferSizeInBytes, Path path, boolean readonly) throws IOException {
this.path = path;
this.readOnly = readonly;
if (this.readOnly == false) {
Files.createDirectories(path);
}
this.bufferSizeInBytes = bufferSizeInBytes;
}
@Override
public String toString() {
return path.toString();
}
public Path path() {
return path;
}
public int bufferSizeInBytes() {
return this.bufferSizeInBytes;
}
@Override
public BlobContainer blobContainer(BlobPath path) {
try {
return new FsBlobContainer(this, path, buildAndCreate(path));
} catch (IOException ex) {
throw new ElasticsearchException("failed to create blob container", ex);
}
}
@Override
public void close() {
// nothing to do here...
}
private synchronized Path buildAndCreate(BlobPath path) throws IOException {
Path f = buildPath(path);
if (readOnly == false) {
Files.createDirectories(f);
}
return f;
}
private Path buildPath(BlobPath path) {
List paths = path.parts();
if (paths.isEmpty()) {
return path();
}
Path blobPath = this.path.resolve(paths.get(0));
for (int i = 1; i < paths.size(); i++) {
blobPath = blobPath.resolve(paths.get(i));
}
return blobPath;
}
}