/*
* 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.jclouds.aws.s3.blobstore;
import static org.jclouds.s3.domain.ObjectMetadata.StorageClass.REDUCED_REDUNDANCY;
import java.util.Set;
import javax.inject.Inject;
import javax.inject.Provider;
import org.jclouds.aws.domain.Region;
import org.jclouds.aws.s3.AWSS3ApiMetadata;
import org.jclouds.aws.s3.AWSS3Client;
import org.jclouds.aws.s3.blobstore.options.AWSS3PutObjectOptions;
import org.jclouds.aws.s3.blobstore.options.AWSS3PutOptions;
import org.jclouds.aws.s3.blobstore.strategy.MultipartUploadStrategy;
import org.jclouds.blobstore.BlobStoreContext;
import org.jclouds.blobstore.domain.Blob;
import org.jclouds.blobstore.domain.PageSet;
import org.jclouds.blobstore.domain.StorageMetadata;
import org.jclouds.blobstore.functions.BlobToHttpGetOptions;
import org.jclouds.blobstore.options.CreateContainerOptions;
import org.jclouds.blobstore.options.PutOptions;
import org.jclouds.blobstore.strategy.internal.FetchBlobMetadata;
import org.jclouds.blobstore.util.BlobUtils;
import org.jclouds.collect.Memoized;
import org.jclouds.domain.Location;
import org.jclouds.s3.blobstore.S3BlobStore;
import org.jclouds.s3.blobstore.functions.BlobToObject;
import org.jclouds.s3.blobstore.functions.BucketToResourceList;
import org.jclouds.s3.blobstore.functions.ContainerToBucketListOptions;
import org.jclouds.s3.blobstore.functions.ObjectToBlob;
import org.jclouds.s3.blobstore.functions.ObjectToBlobMetadata;
import org.jclouds.s3.domain.AccessControlList;
import org.jclouds.s3.domain.BucketMetadata;
import org.jclouds.s3.domain.CannedAccessPolicy;
import org.jclouds.s3.domain.ObjectMetadata;
import com.google.common.base.Function;
import com.google.common.base.Supplier;
import com.google.common.cache.CacheLoader;
import com.google.common.cache.LoadingCache;
/**
* Provide AWS S3 specific extensions.
*
* @author Tibor Kiss, Andrei Savu
*/
public class AWSS3BlobStore extends S3BlobStore {
private final Provider<MultipartUploadStrategy> multipartUploadStrategy;
private final LoadingCache<String, AccessControlList> bucketAcls;
private final BlobToObject blob2Object;
@Inject
AWSS3BlobStore(BlobStoreContext context, BlobUtils blobUtils, Supplier<Location> defaultLocation,
@Memoized Supplier<Set<? extends Location>> locations, AWSS3Client sync,
Function<Set<BucketMetadata>, PageSet<? extends StorageMetadata>> convertBucketsToStorageMetadata,
ContainerToBucketListOptions container2BucketListOptions, BucketToResourceList bucket2ResourceList,
ObjectToBlob object2Blob, BlobToHttpGetOptions blob2ObjectGetOptions, BlobToObject blob2Object,
ObjectToBlobMetadata object2BlobMd, Provider<FetchBlobMetadata> fetchBlobMetadataProvider,
LoadingCache<String, AccessControlList> bucketAcls,
Provider<MultipartUploadStrategy> multipartUploadStrategy) {
super(context, blobUtils, defaultLocation, locations, sync, convertBucketsToStorageMetadata,
container2BucketListOptions, bucket2ResourceList, object2Blob, blob2ObjectGetOptions, blob2Object,
object2BlobMd, fetchBlobMetadataProvider, bucketAcls);
this.multipartUploadStrategy = multipartUploadStrategy;
this.bucketAcls = bucketAcls;
this.blob2Object = blob2Object;
}
@Override
public String putBlob(String container, Blob blob, PutOptions options) {
if (options.isMultipart()) {
// need to use a provider if the strategy object is stateful
return multipartUploadStrategy.get().execute(container, blob);
} else if ((options instanceof AWSS3PutOptions) &&
(((AWSS3PutOptions) options).getStorageClass() == REDUCED_REDUNDANCY)) {
return putBlobWithReducedRedundancy(container, blob);
} else {
return super.putBlob(container, blob, options);
}
}
private String putBlobWithReducedRedundancy(String container, Blob blob) {
AWSS3PutObjectOptions options = new AWSS3PutObjectOptions();
try {
AccessControlList acl = bucketAcls.getUnchecked(container);
if (acl != null && acl.hasPermission(AccessControlList.GroupGranteeURI.ALL_USERS,
AccessControlList.Permission.READ)) {
options.withAcl(CannedAccessPolicy.PUBLIC_READ);
}
options.storageClass(ObjectMetadata.StorageClass.REDUCED_REDUNDANCY);
} catch (CacheLoader.InvalidCacheLoadException e) {
// nulls not permitted from cache loader
}
return getContext().unwrap(AWSS3ApiMetadata.CONTEXT_TOKEN).getApi().putObject(container, blob2Object.apply(blob),
options);
}
@Override
public boolean createContainerInLocation(Location location, String container,
CreateContainerOptions options) {
if ((location == null || location.getId().equals(Region.US_STANDARD)) &&
containerExists(container)) {
// AWS-S3 returns the incorrect creation status when a container
// already exists in the us-standard (or default) region. See
// JCLOUDS-334 for details.
return false;
}
return super.createContainerInLocation(location, container, options);
}
}