org.jclouds.s3.binders.BindObjectMetadataToRequest.java Source code

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Here is the source code for org.jclouds.s3.binders.BindObjectMetadataToRequest.java

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/*
 * 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.s3.binders;

import static com.google.common.base.Preconditions.checkArgument;
import static com.google.common.base.Preconditions.checkNotNull;
import static com.google.common.io.BaseEncoding.base64;

import javax.inject.Inject;
import javax.inject.Singleton;

import org.jclouds.blobstore.binders.BindMapToHeadersWithPrefix;
import org.jclouds.http.HttpRequest;
import org.jclouds.rest.Binder;
import org.jclouds.s3.domain.ObjectMetadata;

import com.google.common.collect.ImmutableMultimap;
import com.google.common.collect.ImmutableMultimap.Builder;
import com.google.common.net.HttpHeaders;

@Singleton
public class BindObjectMetadataToRequest implements Binder {
    protected final BindMapToHeadersWithPrefix metadataPrefixer;

    @Inject
    public BindObjectMetadataToRequest(BindMapToHeadersWithPrefix metadataPrefixer) {
        this.metadataPrefixer = checkNotNull(metadataPrefixer, "metadataPrefixer");
    }

    @SuppressWarnings("unchecked")
    @Override
    public <R extends HttpRequest> R bindToRequest(R request, Object input) {
        checkArgument(checkNotNull(input, "input") instanceof ObjectMetadata,
                "this binder is only valid for ObjectMetadata!");
        checkNotNull(request, "request");

        ObjectMetadata md = ObjectMetadata.class.cast(input);
        checkArgument(md.getKey() != null, "objectMetadata.getKey() must be set!");

        request = metadataPrefixer.bindToRequest(request, md.getUserMetadata());

        Builder<String, String> headers = ImmutableMultimap.builder();
        if (md.getContentMetadata().getCacheControl() != null) {
            headers.put(HttpHeaders.CACHE_CONTROL, md.getContentMetadata().getCacheControl());
        }

        if (md.getContentMetadata().getContentDisposition() != null) {
            headers.put("Content-Disposition", md.getContentMetadata().getContentDisposition());
        }

        if (md.getContentMetadata().getContentEncoding() != null) {
            headers.put("Content-Encoding", md.getContentMetadata().getContentEncoding());
        }

        String contentLanguage = md.getContentMetadata().getContentLanguage();
        if (contentLanguage != null) {
            headers.put(HttpHeaders.CONTENT_LANGUAGE, contentLanguage);
        }

        if (md.getContentMetadata().getContentType() != null) {
            headers.put(HttpHeaders.CONTENT_TYPE, md.getContentMetadata().getContentType());
        } else {
            headers.put(HttpHeaders.CONTENT_TYPE, "binary/octet-stream");
        }

        if (md.getContentMetadata().getContentMD5() != null) {
            headers.put("Content-MD5", base64().encode(md.getContentMetadata().getContentMD5()));
        }

        return (R) request.toBuilder().replaceHeaders(headers.build()).build();
    }
}