/*
* 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.openstack.swift.blobstore.strategy.internal;
import static com.google.common.base.Preconditions.checkNotNull;
import javax.annotation.Resource;
import javax.inject.Named;
import javax.inject.Provider;
import org.jclouds.blobstore.domain.Blob;
import org.jclouds.blobstore.domain.BlobBuilder;
import org.jclouds.blobstore.reference.BlobStoreConstants;
import org.jclouds.io.Payload;
import org.jclouds.io.PayloadSlicer;
import org.jclouds.logging.Logger;
import org.jclouds.openstack.swift.CommonSwiftClient;
import org.jclouds.openstack.swift.blobstore.functions.BlobToObject;
import com.google.inject.Inject;
public class SequentialMultipartUploadStrategy implements MultipartUploadStrategy {
private static final String PART_SEPARATOR = "/";
@Resource
@Named(BlobStoreConstants.BLOBSTORE_LOGGER)
private Logger logger = Logger.NULL;
private final CommonSwiftClient client;
private final Provider<BlobBuilder> blobBuilders;
private final BlobToObject blob2Object;
private final MultipartUploadSlicingAlgorithm algorithm;
private final PayloadSlicer slicer;
@Inject
public SequentialMultipartUploadStrategy(CommonSwiftClient client, Provider<BlobBuilder> blobBuilders,
BlobToObject blob2Object, MultipartUploadSlicingAlgorithm algorithm, PayloadSlicer slicer) {
this.client = checkNotNull(client, "client");
this.blobBuilders = checkNotNull(blobBuilders, "blobBuilders");
this.blob2Object = checkNotNull(blob2Object, "blob2Object");
this.algorithm = checkNotNull(algorithm, "algorithm");
this.slicer = checkNotNull(slicer, "slicer");
}
@Override
public String execute(String container, Blob blob) {
String key = blob.getMetadata().getName();
Payload payload = blob.getPayload();
Long length = payload.getContentMetadata().getContentLength();
checkNotNull(length,
"please invoke payload.getContentMetadata().setContentLength(length) prior to multipart upload");
long chunkSize = algorithm.calculateChunkSize(length);
int partCount = algorithm.getParts();
if (partCount > 0) {
int part;
while ((part = algorithm.getNextPart()) <= partCount) {
Payload chunkedPart = slicer.slice(payload, algorithm.getNextChunkOffset(), chunkSize);
Blob blobPart = blobBuilders.get()
.name(key + PART_SEPARATOR + part)
.payload(chunkedPart)
.contentDisposition(key + PART_SEPARATOR + part).build();
client.putObject(container, blob2Object.apply(blobPart));
}
long remaining = algorithm.getRemaining();
if (remaining > 0) {
Payload chunkedPart = slicer.slice(payload, algorithm.getNextChunkOffset(), remaining);
Blob blobPart = blobBuilders.get()
.name(key + PART_SEPARATOR + part)
.payload(chunkedPart)
.contentDisposition(key + PART_SEPARATOR + part).build();
client.putObject(container, blob2Object.apply(blobPart));
}
return client.putObjectManifest(container, key);
} else {
return client.putObject(container, blob2Object.apply(blob));
}
}
}