org.apache.jackrabbit.oak.segment.aws.AwsManifestFile Maven / Gradle / Ivy
/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF 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.apache.jackrabbit.oak.segment.aws;
import java.io.IOException;
import java.io.PipedInputStream;
import java.io.PipedOutputStream;
import java.util.Properties;
import com.amazonaws.AmazonServiceException;
import com.amazonaws.services.s3.model.S3Object;
import org.apache.jackrabbit.oak.segment.spi.persistence.ManifestFile;
public class AwsManifestFile implements ManifestFile {
private final S3Directory directory;
private final String manifestFile;
public AwsManifestFile(S3Directory directory, String manifestFile) throws IOException {
this.directory = directory;
this.manifestFile = manifestFile;
}
@Override
public boolean exists() {
return directory.doesObjectExist(manifestFile);
}
@Override
public Properties load() throws IOException {
Properties properties = new Properties();
if (this.exists()) {
try (S3Object object = directory.getObject(manifestFile)) {
properties.load(object.getObjectContent());
} catch (AmazonServiceException e) {
throw new IOException(e);
}
}
return properties;
}
@Override
public void save(Properties properties) throws IOException {
try (PipedInputStream input = new PipedInputStream()) {
try (PipedOutputStream src = new PipedOutputStream(input)) {
properties.store(src, null);
}
directory.putObject(manifestFile, input);
}
}
}