| /** |
| * Licensed to jclouds, Inc. (jclouds) under one or more |
| * contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. jclouds 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.binders; |
| |
| import static com.google.common.base.Preconditions.checkArgument; |
| import static com.google.common.base.Preconditions.checkNotNull; |
| |
| import javax.inject.Singleton; |
| |
| import org.jclouds.http.HttpRequest; |
| import org.jclouds.openstack.swift.reference.SwiftHeaders; |
| import org.jclouds.rest.Binder; |
| |
| import com.google.common.base.Function; |
| import com.google.common.collect.HashMultimap; |
| import com.google.common.collect.Iterables; |
| |
| /** |
| * @author Everett Toews |
| */ |
| @Singleton |
| public class BindIterableToHeadersWithContainerDeleteMetadataPrefix implements Binder { |
| private final Function<String, String> FN; |
| |
| public BindIterableToHeadersWithContainerDeleteMetadataPrefix() { |
| FN = new Function<String, String>() { |
| |
| @Override |
| public String apply(String element) { |
| String inLowercase = element.toLowerCase(); |
| return (inLowercase.startsWith(SwiftHeaders.CONTAINER_DELETE_METADATA_PREFIX)) ? inLowercase : SwiftHeaders.CONTAINER_DELETE_METADATA_PREFIX + inLowercase; |
| } |
| |
| @Override |
| public String toString() { |
| return "prefix: " + SwiftHeaders.CONTAINER_DELETE_METADATA_PREFIX; |
| } |
| }; |
| } |
| |
| @SuppressWarnings("unchecked") |
| @Override |
| public <R extends HttpRequest> R bindToRequest(R request, Object input) { |
| checkArgument(checkNotNull(input, "input") instanceof Iterable<?>, "this binder is only valid for Iterable!"); |
| checkNotNull(request, "request"); |
| |
| Iterable<String> metadataKeys = Iterables.transform((Iterable<String>) input, FN); |
| HashMultimap<String, String> headers = HashMultimap.create(); |
| |
| for (String metadataKey: metadataKeys) { |
| headers.put(metadataKey, ""); |
| } |
| |
| return (R) request.toBuilder().replaceHeaders(headers).build(); |
| } |
| } |