| 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.atmos.functions; |
| 20 | |
| 21 | import static com.google.common.base.Preconditions.checkNotNull; |
| 22 | |
| 23 | import java.util.Map; |
| 24 | import java.util.Set; |
| 25 | |
| 26 | import javax.inject.Singleton; |
| 27 | |
| 28 | import org.jclouds.atmos.domain.UserMetadata; |
| 29 | import org.jclouds.atmos.reference.AtmosHeaders; |
| 30 | import org.jclouds.http.HttpResponse; |
| 31 | |
| 32 | import com.google.common.base.Function; |
| 33 | import com.google.common.base.Predicate; |
| 34 | import com.google.common.base.Splitter; |
| 35 | import com.google.common.collect.ImmutableMap; |
| 36 | import com.google.common.collect.ImmutableMap.Builder; |
| 37 | import com.google.common.collect.ImmutableSet; |
| 38 | import com.google.common.collect.Maps; |
| 39 | |
| 40 | /** |
| 41 | * @author Adrian Cole |
| 42 | */ |
| 43 | @Singleton |
| 44 | public class ParseUserMetadataFromHeaders implements Function<HttpResponse, UserMetadata> { |
| 45 | private static final Set<String> sysKeys = ImmutableSet.of("atime", "ctime", "gid", "itime", "mtime", "nlink", |
| 46 | "policyname", "size", "uid", "content-md5", "objectid", "objname", "type"); |
| 47 | private static final Predicate<String> filter = new Predicate<String>() { |
| 48 | |
| 49 | @Override |
| 50 | public boolean apply(String arg0) { |
| 51 | return !sysKeys.contains(arg0); |
| 52 | } |
| 53 | |
| 54 | }; |
| 55 | |
| 56 | public UserMetadata apply(HttpResponse from) { |
| 57 | checkNotNull(from, "http response"); |
| 58 | |
| 59 | Map<String, String> meta = Maps.filterKeys( |
| 60 | getMetaMap(checkNotNull(from.getFirstHeaderOrNull(AtmosHeaders.META), AtmosHeaders.META)), |
| 61 | filter); |
| 62 | |
| 63 | Map<String, String> listableMeta = (from.getFirstHeaderOrNull(AtmosHeaders.LISTABLE_META) != null) ? getMetaMap(from |
| 64 | .getFirstHeaderOrNull(AtmosHeaders.LISTABLE_META)) : ImmutableMap.<String, String> of(); |
| 65 | |
| 66 | Iterable<String> tags = (from.getFirstHeaderOrNull(AtmosHeaders.TAGS) != null) ? Splitter.on(", ").split( |
| 67 | from.getFirstHeaderOrNull(AtmosHeaders.TAGS)) : ImmutableSet.<String> of(); |
| 68 | |
| 69 | Iterable<String> listableTags = (from.getFirstHeaderOrNull(AtmosHeaders.LISTABLE_TAGS) != null) ? Splitter |
| 70 | .on(", ").split(from.getFirstHeaderOrNull(AtmosHeaders.LISTABLE_TAGS)) : ImmutableSet.<String> of(); |
| 71 | |
| 72 | return new UserMetadata(meta, listableMeta, tags, listableTags); |
| 73 | } |
| 74 | |
| 75 | // TODO: change to guava |
| 76 | private Map<String, String> getMetaMap(String meta) { |
| 77 | Builder<String, String> metaMap = ImmutableMap.<String, String> builder(); |
| 78 | for (String entry : Splitter.on(", ").split(meta)) { |
| 79 | String[] entrySplit = entry.split("="); |
| 80 | metaMap.put(entrySplit[0], entrySplit[1]); |
| 81 | } |
| 82 | return metaMap.build(); |
| 83 | } |
| 84 | } |