/*
* 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.functions;
import static com.google.common.base.Preconditions.checkArgument;
import static com.google.common.io.BaseEncoding.base16;
import static org.jclouds.http.HttpUtils.attemptToParseSizeAndRangeFromHeaders;
import javax.inject.Inject;
import org.jclouds.blobstore.domain.BlobMetadata;
import org.jclouds.blobstore.functions.ParseSystemAndUserMetadataFromHeaders;
import org.jclouds.http.HttpRequest;
import org.jclouds.http.HttpResponse;
import org.jclouds.openstack.swift.blobstore.functions.ResourceToObjectInfo;
import org.jclouds.openstack.swift.domain.MutableObjectInfoWithMetadata;
import org.jclouds.rest.InvocationContext;
import org.jclouds.rest.internal.GeneratedHttpRequest;
import com.google.common.base.Function;
/**
* This parses @{link {@link MutableObjectInfoWithMetadata} from HTTP headers.
*
* @author Adrian Cole
*/
public class ParseObjectInfoFromHeaders implements Function<HttpResponse, MutableObjectInfoWithMetadata>,
InvocationContext<ParseObjectInfoFromHeaders> {
private final ParseSystemAndUserMetadataFromHeaders blobMetadataParser;
private final ResourceToObjectInfo blobToObjectInfo;
private String container;
@Inject
public ParseObjectInfoFromHeaders(ParseSystemAndUserMetadataFromHeaders blobMetadataParser,
ResourceToObjectInfo blobToObjectInfo) {
this.blobMetadataParser = blobMetadataParser;
this.blobToObjectInfo = blobToObjectInfo;
}
/**
* parses the http response headers to create a new {@link MutableObjectInfoWithMetadata} object.
*/
public MutableObjectInfoWithMetadata apply(HttpResponse from) {
BlobMetadata base = blobMetadataParser.apply(from);
MutableObjectInfoWithMetadata to = blobToObjectInfo.apply(base);
to.setBytes(attemptToParseSizeAndRangeFromHeaders(from));
to.setContainer(container);
to.setUri(base.getUri());
String eTagHeader = from.getFirstHeaderOrNull("Etag");
if (eTagHeader != null) {
to.setHash(base16().lowerCase().decode(eTagHeader));
}
return to;
}
@Override
public ParseObjectInfoFromHeaders setContext(HttpRequest request) {
blobMetadataParser.setContext(request);
checkArgument(request instanceof GeneratedHttpRequest, "note this handler requires a GeneratedHttpRequest");
return setContainer(GeneratedHttpRequest.class.cast(request).getInvocation().getArgs().get(0).toString());
}
private ParseObjectInfoFromHeaders setContainer(String container) {
this.container = container;
return this;
}
}