| 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.http.handlers; |
| 20 | |
| 21 | import javax.inject.Singleton; |
| 22 | |
| 23 | import org.jclouds.http.HttpCommand; |
| 24 | import org.jclouds.http.HttpResponse; |
| 25 | import org.jclouds.http.HttpRetryHandler; |
| 26 | import org.jclouds.http.annotation.ClientError; |
| 27 | import org.jclouds.http.annotation.Redirection; |
| 28 | import org.jclouds.http.annotation.ServerError; |
| 29 | |
| 30 | import com.google.common.annotations.VisibleForTesting; |
| 31 | import com.google.inject.Inject; |
| 32 | |
| 33 | /** |
| 34 | * Delegates to {@link HttpRetryHandler HttpRetryHandlers} who are annotated according to the |
| 35 | * response codes they relate to. |
| 36 | * |
| 37 | * @author Adrian Cole |
| 38 | */ |
| 39 | @Singleton |
| 40 | public class DelegatingRetryHandler implements HttpRetryHandler { |
| 41 | |
| 42 | @VisibleForTesting |
| 43 | @Inject(optional = true) |
| 44 | @Redirection |
| 45 | HttpRetryHandler redirectionRetryHandler; |
| 46 | |
| 47 | @VisibleForTesting |
| 48 | @Inject(optional = true) |
| 49 | @ClientError |
| 50 | HttpRetryHandler clientErrorRetryHandler; |
| 51 | |
| 52 | @VisibleForTesting |
| 53 | @Inject(optional = true) |
| 54 | @ServerError |
| 55 | HttpRetryHandler serverErrorRetryHandler; |
| 56 | |
| 57 | @Inject |
| 58 | public DelegatingRetryHandler(BackoffLimitedRetryHandler backOff, |
| 59 | RedirectionRetryHandler redirectionRetryHandler) { |
| 60 | this.serverErrorRetryHandler = backOff; |
| 61 | this.redirectionRetryHandler = redirectionRetryHandler; |
| 62 | this.clientErrorRetryHandler = HttpRetryHandler.NEVER_RETRY; |
| 63 | } |
| 64 | |
| 65 | public boolean shouldRetryRequest(HttpCommand command, HttpResponse response) { |
| 66 | int statusCode = response.getStatusCode(); |
| 67 | boolean retryRequest = false; |
| 68 | if (statusCode >= 300 && statusCode < 400) { |
| 69 | retryRequest = redirectionRetryHandler.shouldRetryRequest(command, response); |
| 70 | } else if (statusCode >= 400 && statusCode < 500) { |
| 71 | retryRequest = clientErrorRetryHandler.shouldRetryRequest(command, response); |
| 72 | } else if (statusCode >= 500) { |
| 73 | retryRequest = serverErrorRetryHandler.shouldRetryRequest(command, response); |
| 74 | } |
| 75 | return retryRequest; |
| 76 | } |
| 77 | |
| 78 | public HttpRetryHandler getRedirectionRetryHandler() { |
| 79 | return redirectionRetryHandler; |
| 80 | } |
| 81 | |
| 82 | public HttpRetryHandler getClientErrorRetryHandler() { |
| 83 | return clientErrorRetryHandler; |
| 84 | } |
| 85 | |
| 86 | public HttpRetryHandler getServerErrorRetryHandler() { |
| 87 | return serverErrorRetryHandler; |
| 88 | } |
| 89 | } |