/*
* 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.cloud.aws.blobstore;
import com.amazonaws.services.s3.AmazonS3;
import com.amazonaws.services.s3.model.ObjectListing;
import com.amazonaws.services.s3.model.S3ObjectSummary;
import org.elasticsearch.common.Nullable;
import org.elasticsearch.common.blobstore.BlobPath;
import org.elasticsearch.common.blobstore.BlobStore;
import org.elasticsearch.common.blobstore.ImmutableBlobContainer;
import org.elasticsearch.common.component.AbstractComponent;
import org.elasticsearch.common.settings.Settings;
import org.elasticsearch.common.unit.ByteSizeUnit;
import org.elasticsearch.common.unit.ByteSizeValue;
import java.util.concurrent.Executor;
/**
* @author kimchy (shay.banon)
*/
public class S3BlobStore extends AbstractComponent implements BlobStore {
private final AmazonS3 client;
private final String bucket;
private final String region;
private final Executor executor;
private final int bufferSizeInBytes;
public S3BlobStore(Settings settings, AmazonS3 client, String bucket, @Nullable String region, Executor executor) {
super(settings);
this.client = client;
this.bucket = bucket;
this.region = region;
this.executor = executor;
this.bufferSizeInBytes = (int) settings.getAsBytesSize("buffer_size", new ByteSizeValue(100, ByteSizeUnit.KB)).bytes();
if (!client.doesBucketExist(bucket)) {
if (region != null) {
client.createBucket(bucket, region);
} else {
client.createBucket(bucket);
}
}
}
@Override public String toString() {
return (region == null ? "" : region + "/") + bucket;
}
public AmazonS3 client() {
return client;
}
public String bucket() {
return bucket;
}
public Executor executor() {
return executor;
}
public int bufferSizeInBytes() {
return bufferSizeInBytes;
}
@Override public ImmutableBlobContainer immutableBlobContainer(BlobPath path) {
return new S3ImmutableBlobContainer(path, this);
}
@Override public void delete(BlobPath path) {
ObjectListing prevListing = null;
while (true) {
ObjectListing list;
if (prevListing != null) {
list = client.listNextBatchOfObjects(prevListing);
} else {
list = client.listObjects(bucket, path.buildAsString("/"));
}
for (S3ObjectSummary summary : list.getObjectSummaries()) {
client.deleteObject(summary.getBucketName(), summary.getKey());
}
if (list.isTruncated()) {
prevListing = list;
} else {
break;
}
}
}
@Override public void close() {
}
}