| /* |
| * ==================================================================== |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, |
| * software distributed under the License is distributed on an |
| * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| * KIND, either express or implied. See the License for the |
| * specific language governing permissions and limitations |
| * under the License. |
| * ==================================================================== |
| * |
| * This software consists of voluntary contributions made by many |
| * individuals on behalf of the Apache Software Foundation. For more |
| * information on the Apache Software Foundation, please see |
| * <http://www.apache.org/>. |
| * |
| */ |
| package org.apache.http.impl.client.cache; |
| |
| import java.io.IOException; |
| import org.apache.commons.logging.Log; |
| import org.apache.commons.logging.LogFactory; |
| import org.apache.http.HttpHost; |
| import org.apache.http.HttpRequest; |
| import org.apache.http.HttpResponse; |
| import org.apache.http.ProtocolException; |
| import org.apache.http.client.cache.HttpCacheEntry; |
| import org.apache.http.concurrent.FutureCallback; |
| import org.apache.http.protocol.HttpContext; |
| |
| /** |
| * Class used to represent an asynchronous revalidation event, such as with |
| * "stale-while-revalidate" |
| */ |
| class AsynchronousAsyncValidationRequest implements Runnable { |
| private final AsynchronousAsyncValidator parent; |
| private final CachingHttpAsyncClient cachingAsyncClient; |
| private final HttpHost target; |
| private final HttpRequest request; |
| private final HttpContext context; |
| private final HttpCacheEntry cacheEntry; |
| private final String identifier; |
| |
| private final Log log = LogFactory.getLog(getClass()); |
| |
| /** |
| * Used internally by {@link AsynchronousValidator} to schedule a |
| * revalidation. |
| */ |
| AsynchronousAsyncValidationRequest(AsynchronousAsyncValidator parent, |
| CachingHttpAsyncClient cachingClient, HttpHost target, HttpRequest request, |
| HttpContext context, HttpCacheEntry cacheEntry, String identifier) { |
| this.parent = parent; |
| this.cachingAsyncClient = cachingClient; |
| this.target = target; |
| this.request = request; |
| this.context = context; |
| this.cacheEntry = cacheEntry; |
| this.identifier = identifier; |
| } |
| |
| public void run() { |
| try { |
| this.cachingAsyncClient.revalidateCacheEntry(this.target, this.request, this.context, |
| this.cacheEntry, new FutureCallback<HttpResponse>() { |
| |
| public void cancelled() { |
| } |
| |
| public void completed(HttpResponse httpResponse) { |
| } |
| |
| public void failed(Exception e) { |
| if (e instanceof IOException) { |
| AsynchronousAsyncValidationRequest.this.log |
| .debug("Asynchronous revalidation failed due to exception: " |
| + e); |
| } |
| } |
| }); |
| } catch (ProtocolException pe) { |
| this.log.error("ProtocolException thrown during asynchronous revalidation: " + pe); |
| } finally { |
| this.parent.markComplete(this.identifier); |
| } |
| } |
| |
| String getIdentifier() { |
| return this.identifier; |
| } |
| |
| } |