| 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.openstack.config; |
| 20 | |
| 21 | import java.util.Date; |
| 22 | import java.util.concurrent.ExecutionException; |
| 23 | import java.util.concurrent.Future; |
| 24 | import java.util.concurrent.TimeUnit; |
| 25 | import java.util.concurrent.TimeoutException; |
| 26 | |
| 27 | import javax.inject.Inject; |
| 28 | import javax.inject.Named; |
| 29 | import javax.inject.Singleton; |
| 30 | |
| 31 | import org.jclouds.Constants; |
| 32 | import org.jclouds.concurrent.RetryOnTimeOutExceptionSupplier; |
| 33 | import org.jclouds.date.TimeStamp; |
| 34 | import org.jclouds.http.RequiresHttp; |
| 35 | import org.jclouds.openstack.Authentication; |
| 36 | import org.jclouds.openstack.OpenStackAuthAsyncClient; |
| 37 | import org.jclouds.openstack.OpenStackAuthAsyncClient.AuthenticationResponse; |
| 38 | import org.jclouds.rest.AsyncClientFactory; |
| 39 | |
| 40 | import com.google.common.base.Supplier; |
| 41 | import com.google.common.base.Suppliers; |
| 42 | import com.google.common.base.Throwables; |
| 43 | import com.google.inject.AbstractModule; |
| 44 | import com.google.inject.Provides; |
| 45 | |
| 46 | /** |
| 47 | * Configures the Rackspace authentication service connection, including logging and http transport. |
| 48 | * |
| 49 | * @author Adrian Cole |
| 50 | */ |
| 51 | @RequiresHttp |
| 52 | public class OpenStackAuthenticationModule extends AbstractModule { |
| 53 | |
| 54 | @Override |
| 55 | protected void configure() { |
| 56 | } |
| 57 | |
| 58 | /** |
| 59 | * borrowing concurrency code to ensure that caching takes place properly |
| 60 | */ |
| 61 | @Provides |
| 62 | @Singleton |
| 63 | @Authentication |
| 64 | protected Supplier<String> provideAuthenticationTokenCache(final Supplier<AuthenticationResponse> supplier) |
| 65 | throws InterruptedException, ExecutionException, TimeoutException { |
| 66 | return new Supplier<String>() { |
| 67 | public String get() { |
| 68 | return supplier.get().getAuthToken(); |
| 69 | } |
| 70 | }; |
| 71 | } |
| 72 | |
| 73 | @Singleton |
| 74 | public static class GetAuthenticationResponse implements Supplier<AuthenticationResponse> { |
| 75 | protected final OpenStackAuthAsyncClient client; |
| 76 | protected final String user; |
| 77 | protected final String key; |
| 78 | |
| 79 | @Inject |
| 80 | public GetAuthenticationResponse(AsyncClientFactory factory, @Named(Constants.PROPERTY_IDENTITY) String user, |
| 81 | @Named(Constants.PROPERTY_CREDENTIAL) String key) { |
| 82 | this.client = factory.create(OpenStackAuthAsyncClient.class); |
| 83 | this.user = user; |
| 84 | this.key = key; |
| 85 | } |
| 86 | |
| 87 | @Override |
| 88 | public AuthenticationResponse get() { |
| 89 | try { |
| 90 | Future<AuthenticationResponse> response = authenticate(); |
| 91 | return response.get(30, TimeUnit.SECONDS); |
| 92 | } catch (Exception e) { |
| 93 | Throwables.propagate(e); |
| 94 | assert false : e; |
| 95 | return null; |
| 96 | } |
| 97 | } |
| 98 | |
| 99 | protected Future<AuthenticationResponse> authenticate() { |
| 100 | return client.authenticate(user, key); |
| 101 | } |
| 102 | |
| 103 | } |
| 104 | |
| 105 | @Provides |
| 106 | @Singleton |
| 107 | Supplier<AuthenticationResponse> provideAuthenticationResponseCache( |
| 108 | final GetAuthenticationResponse getAuthenticationResponse) { |
| 109 | return Suppliers.memoizeWithExpiration(new RetryOnTimeOutExceptionSupplier<AuthenticationResponse>( |
| 110 | getAuthenticationResponse), 23, TimeUnit.HOURS); |
| 111 | } |
| 112 | |
| 113 | @Provides |
| 114 | @Singleton |
| 115 | @TimeStamp |
| 116 | protected Supplier<Date> provideCacheBusterDate() { |
| 117 | return Suppliers.memoizeWithExpiration(new Supplier<Date>() { |
| 118 | public Date get() { |
| 119 | return new Date(); |
| 120 | } |
| 121 | }, 1, TimeUnit.SECONDS); |
| 122 | } |
| 123 | |
| 124 | @Provides |
| 125 | @Singleton |
| 126 | protected AuthenticationResponse provideAuthenticationResponse(Supplier<AuthenticationResponse> supplier) |
| 127 | throws InterruptedException, ExecutionException, TimeoutException { |
| 128 | return supplier.get(); |
| 129 | } |
| 130 | |
| 131 | } |