| 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.rest.config; |
| 20 | |
| 21 | import static com.google.common.base.Preconditions.checkNotNull; |
| 22 | |
| 23 | import java.io.InputStream; |
| 24 | import java.util.Map; |
| 25 | import java.util.concurrent.ConcurrentHashMap; |
| 26 | |
| 27 | import javax.annotation.Resource; |
| 28 | import javax.inject.Inject; |
| 29 | import javax.inject.Singleton; |
| 30 | |
| 31 | import org.jclouds.collect.TransformingMap; |
| 32 | import org.jclouds.domain.Credentials; |
| 33 | import org.jclouds.io.CopyInputStreamInputSupplierMap; |
| 34 | import org.jclouds.json.Json; |
| 35 | import org.jclouds.logging.Logger; |
| 36 | import org.jclouds.rest.ConfiguresCredentialStore; |
| 37 | import org.jclouds.util.Strings2; |
| 38 | |
| 39 | import com.google.common.annotations.Beta; |
| 40 | import com.google.common.base.Function; |
| 41 | import com.google.common.io.InputSupplier; |
| 42 | import com.google.inject.AbstractModule; |
| 43 | import com.google.inject.Provides; |
| 44 | import com.google.inject.TypeLiteral; |
| 45 | |
| 46 | /** |
| 47 | * |
| 48 | * @author Adrian Cole |
| 49 | */ |
| 50 | @Beta |
| 51 | @ConfiguresCredentialStore |
| 52 | public class CredentialStoreModule extends AbstractModule { |
| 53 | private static final Map<String, InputSupplier<InputStream>> BACKING = new ConcurrentHashMap<String, InputSupplier<InputStream>>(); |
| 54 | private final Map<String, InputStream> backing; |
| 55 | |
| 56 | public CredentialStoreModule(Map<String, InputStream> backing) { |
| 57 | this.backing = backing; |
| 58 | } |
| 59 | |
| 60 | public CredentialStoreModule() { |
| 61 | this(null); |
| 62 | } |
| 63 | |
| 64 | @Override |
| 65 | protected void configure() { |
| 66 | bind(new TypeLiteral<Function<Credentials, InputStream>>() { |
| 67 | }).to(CredentialsToJsonInputStream.class); |
| 68 | bind(new TypeLiteral<Function<InputStream, Credentials>>() { |
| 69 | }).to(CredentialsFromJsonInputStream.class); |
| 70 | if (backing != null) { |
| 71 | bind(new TypeLiteral<Map<String, InputStream>>() { |
| 72 | }).toInstance(backing); |
| 73 | } else { |
| 74 | bind(new TypeLiteral<Map<String, InputSupplier<InputStream>>>() { |
| 75 | }).toInstance(BACKING); |
| 76 | bind(new TypeLiteral<Map<String, InputStream>>() { |
| 77 | }).to(new TypeLiteral<CopyInputStreamInputSupplierMap>() { |
| 78 | }); |
| 79 | } |
| 80 | } |
| 81 | |
| 82 | @Singleton |
| 83 | public static class CredentialsToJsonInputStream implements Function<Credentials, InputStream> { |
| 84 | private final Json json; |
| 85 | |
| 86 | @Inject |
| 87 | CredentialsToJsonInputStream(Json json) { |
| 88 | this.json = json; |
| 89 | } |
| 90 | |
| 91 | @Override |
| 92 | public InputStream apply(Credentials from) { |
| 93 | return Strings2.toInputStream(json.toJson(checkNotNull(from))); |
| 94 | } |
| 95 | } |
| 96 | |
| 97 | @Singleton |
| 98 | public static class CredentialsFromJsonInputStream implements Function<InputStream, Credentials> { |
| 99 | @Resource |
| 100 | protected Logger logger = Logger.NULL; |
| 101 | |
| 102 | private final Json json; |
| 103 | |
| 104 | @Inject |
| 105 | CredentialsFromJsonInputStream(Json json) { |
| 106 | this.json = json; |
| 107 | } |
| 108 | |
| 109 | private static class PrivateCredentials { |
| 110 | String identity; |
| 111 | String credential; |
| 112 | } |
| 113 | |
| 114 | @Override |
| 115 | public Credentials apply(InputStream from) { |
| 116 | try { |
| 117 | PrivateCredentials credentials = json.fromJson(Strings2.toStringAndClose(checkNotNull(from)), |
| 118 | PrivateCredentials.class); |
| 119 | return new Credentials(credentials.identity, credentials.credential); |
| 120 | } catch (Exception e) { |
| 121 | logger.warn(e, "ignoring problem retrieving credentials"); |
| 122 | return null; |
| 123 | } |
| 124 | } |
| 125 | } |
| 126 | |
| 127 | @Provides |
| 128 | @Singleton |
| 129 | protected Map<String, Credentials> provideCredentialStore(Map<String, InputStream> backing, |
| 130 | Function<Credentials, InputStream> credentialsSerializer, |
| 131 | Function<InputStream, Credentials> credentialsDeserializer) { |
| 132 | return new TransformingMap<String, InputStream, Credentials>(backing, credentialsDeserializer, |
| 133 | credentialsSerializer); |
| 134 | } |
| 135 | } |