org.elasticsearch.common.blobstore.fs.FsImmutableBlobContainer Maven / Gradle / Ivy
/*
* 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.ElasticSearchIllegalStateException;
import org.elasticsearch.common.blobstore.BlobPath;
import org.elasticsearch.common.blobstore.ImmutableBlobContainer;
import org.elasticsearch.common.blobstore.support.BlobStores;
import org.elasticsearch.common.io.FileSystemUtils;
import java.io.File;
import java.io.IOException;
import java.io.InputStream;
import java.io.RandomAccessFile;
/**
*
*/
public class FsImmutableBlobContainer extends AbstractFsBlobContainer implements ImmutableBlobContainer {
public FsImmutableBlobContainer(FsBlobStore blobStore, BlobPath blobPath, File path) {
super(blobStore, blobPath, path);
}
@Override
public void writeBlob(final String blobName, final InputStream is, final long sizeInBytes, final WriterListener listener) {
blobStore.executor().execute(new Runnable() {
@Override
public void run() {
File file = new File(path, blobName);
RandomAccessFile raf;
try {
raf = new RandomAccessFile(file, "rw");
// clean the file if it exists
raf.setLength(0);
} catch (Exception e) {
listener.onFailure(e);
return;
}
try {
try {
long bytesWritten = 0;
byte[] buffer = new byte[blobStore.bufferSizeInBytes()];
int bytesRead;
while ((bytesRead = is.read(buffer)) != -1) {
raf.write(buffer, 0, bytesRead);
bytesWritten += bytesRead;
}
if (bytesWritten != sizeInBytes) {
listener.onFailure(new ElasticSearchIllegalStateException("[" + blobName + "]: wrote [" + bytesWritten + "], expected to write [" + sizeInBytes + "]"));
return;
}
} finally {
try {
is.close();
} catch (IOException ex) {
// do nothing
}
try {
raf.close();
} catch (IOException ex) {
// do nothing
}
}
FileSystemUtils.syncFile(file);
listener.onCompleted();
} catch (Exception e) {
// just on the safe size, try and delete it on failure
try {
if (file.exists()) {
file.delete();
}
} catch (Exception e1) {
// ignore
}
listener.onFailure(e);
}
}
});
}
@Override
public void writeBlob(String blobName, InputStream is, long sizeInBytes) throws IOException {
BlobStores.syncWriteBlob(this, blobName, is, sizeInBytes);
}
}