| 1 | /** |
| 2 | * |
| 3 | * Copyright (C) 2011 Cloud Conscious, LLC. <info@cloudconscious.com> |
| 4 | * |
| 5 | * ==================================================================== |
| 6 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 7 | * you may not use this file except in compliance with the License. |
| 8 | * You may obtain a copy of the License at |
| 9 | * |
| 10 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 11 | * |
| 12 | * Unless required by applicable law or agreed to in writing, software |
| 13 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 14 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 15 | * See the License for the specific language governing permissions and |
| 16 | * limitations under the License. |
| 17 | * ==================================================================== |
| 18 | */ |
| 19 | package org.jclouds.s3.functions; |
| 20 | |
| 21 | import static com.google.common.base.Preconditions.checkArgument; |
| 22 | import static com.google.common.base.Preconditions.checkNotNull; |
| 23 | |
| 24 | import java.util.Set; |
| 25 | |
| 26 | import javax.annotation.Nullable; |
| 27 | import javax.annotation.Resource; |
| 28 | import javax.inject.Inject; |
| 29 | import javax.inject.Singleton; |
| 30 | import javax.ws.rs.core.MediaType; |
| 31 | |
| 32 | import org.jclouds.http.HttpRequest; |
| 33 | import org.jclouds.logging.Logger; |
| 34 | import org.jclouds.rest.binders.BindToStringPayload; |
| 35 | import org.jclouds.s3.Bucket; |
| 36 | |
| 37 | /** |
| 38 | * |
| 39 | * Depending on your latency and legal requirements, you can specify a location |
| 40 | * constraint that will affect where your data physically resides. |
| 41 | * |
| 42 | * @author Adrian Cole |
| 43 | * |
| 44 | */ |
| 45 | @Singleton |
| 46 | public class BindRegionToXmlPayload extends BindToStringPayload { |
| 47 | @Resource |
| 48 | protected Logger logger = Logger.NULL; |
| 49 | |
| 50 | private final String defaultRegionForEndpoint; |
| 51 | private final String defaultRegionForService; |
| 52 | private final Set<String> regions; |
| 53 | |
| 54 | @Inject |
| 55 | public BindRegionToXmlPayload(@org.jclouds.location.Region @Nullable String defaultRegionForEndpoint, |
| 56 | @Nullable @Bucket String defaultRegionForService, @org.jclouds.location.Region Set<String> regions) { |
| 57 | this.defaultRegionForEndpoint = defaultRegionForEndpoint; |
| 58 | this.defaultRegionForService = defaultRegionForService; |
| 59 | this.regions = checkNotNull(regions, "regions"); |
| 60 | } |
| 61 | |
| 62 | @Override |
| 63 | public <R extends HttpRequest> R bindToRequest(R request, Object input) { |
| 64 | if (defaultRegionForEndpoint == null) |
| 65 | return request; |
| 66 | input = input == null ? defaultRegionForEndpoint : input; |
| 67 | checkArgument(input instanceof String, "this binder is only valid for Region!"); |
| 68 | String constraint = (String) input; |
| 69 | String value = null; |
| 70 | if ((defaultRegionForService == null && constraint == null) |
| 71 | || (defaultRegionForService != null && defaultRegionForService.equals(constraint))) { |
| 72 | // nothing to bind as this is default. |
| 73 | return request; |
| 74 | } else if (regions.contains(constraint)) { |
| 75 | value = constraint; |
| 76 | } else { |
| 77 | logger.warn("region %s not in %s ", constraint, regions); |
| 78 | value = constraint; |
| 79 | } |
| 80 | String payload = String |
| 81 | .format( |
| 82 | "<CreateBucketConfiguration><LocationConstraint>%s</LocationConstraint></CreateBucketConfiguration>", |
| 83 | value); |
| 84 | request = super.bindToRequest(request, payload); |
| 85 | request.getPayload().getContentMetadata().setContentType(MediaType.TEXT_XML); |
| 86 | return request; |
| 87 | } |
| 88 | } |