| 1 | /** |
| 2 | * Licensed to jclouds, Inc. (jclouds) under one or more |
| 3 | * contributor license agreements. See the NOTICE file |
| 4 | * distributed with this work for additional information |
| 5 | * regarding copyright ownership. jclouds licenses this file |
| 6 | * to you under the Apache License, Version 2.0 (the |
| 7 | * "License"); you may not use this file except in compliance |
| 8 | * with the License. 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, |
| 13 | * software distributed under the License is distributed on an |
| 14 | * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| 15 | * KIND, either express or implied. See the License for the |
| 16 | * specific language governing permissions and limitations |
| 17 | * under the License. |
| 18 | */ |
| 19 | package org.jclouds.s3.blobstore.functions; |
| 20 | |
| 21 | import java.util.NoSuchElementException; |
| 22 | import java.util.Set; |
| 23 | |
| 24 | import javax.annotation.Resource; |
| 25 | import javax.inject.Inject; |
| 26 | import javax.inject.Singleton; |
| 27 | |
| 28 | import org.jclouds.s3.S3Client; |
| 29 | import org.jclouds.s3.domain.BucketMetadata; |
| 30 | import org.jclouds.blobstore.ContainerNotFoundException; |
| 31 | import org.jclouds.collect.Memoized; |
| 32 | import org.jclouds.domain.Location; |
| 33 | import org.jclouds.logging.Logger; |
| 34 | |
| 35 | import com.google.common.base.Function; |
| 36 | import com.google.common.base.Predicate; |
| 37 | import com.google.common.base.Supplier; |
| 38 | import com.google.common.collect.Iterables; |
| 39 | |
| 40 | /** |
| 41 | * @author Adrian Cole |
| 42 | */ |
| 43 | @Singleton |
| 44 | public class LocationFromBucketLocation implements Function<BucketMetadata, Location> { |
| 45 | private final Location onlyLocation; |
| 46 | private final Supplier<Set<? extends Location>> locations; |
| 47 | private final S3Client client; |
| 48 | |
| 49 | @Resource |
| 50 | protected Logger logger = Logger.NULL; |
| 51 | |
| 52 | @Inject |
| 53 | LocationFromBucketLocation(S3Client client, @Memoized Supplier<Set<? extends Location>> locations) { |
| 54 | this.client = client; |
| 55 | this.onlyLocation = locations.get().size() == 1 ? Iterables.get(locations.get(), 0) : null; |
| 56 | this.locations = locations; |
| 57 | } |
| 58 | |
| 59 | public Location apply(BucketMetadata from) { |
| 60 | if (onlyLocation != null) |
| 61 | return onlyLocation; |
| 62 | try { |
| 63 | Set<? extends Location> locations = this.locations.get(); |
| 64 | final String region = client.getBucketLocation(from.getName()); |
| 65 | assert region != null : String.format("could not get region for %s", from.getName()); |
| 66 | if (region != null) { |
| 67 | try { |
| 68 | return Iterables.find(locations, new Predicate<Location>() { |
| 69 | |
| 70 | @Override |
| 71 | public boolean apply(Location input) { |
| 72 | return input.getId().equalsIgnoreCase(region.toString()); |
| 73 | } |
| 74 | |
| 75 | }); |
| 76 | } catch (NoSuchElementException e) { |
| 77 | logger.error("could not get location for region %s in %s", region, locations); |
| 78 | } |
| 79 | } else { |
| 80 | logger.error("could not get region for %s", from.getName()); |
| 81 | } |
| 82 | } catch (ContainerNotFoundException e) { |
| 83 | logger.error(e, "could not get region for %s, as service suggests the bucket doesn't exist", from.getName()); |
| 84 | } |
| 85 | return null; |
| 86 | } |
| 87 | } |