1 // 2 // Copyright (C) 2011 The Android Open Source Project 3 // 4 // Licensed under the Apache License, Version 2.0 (the "License"); 5 // you may not use this file except in compliance with the License. 6 // You may obtain a copy of the License at 7 // 8 // http://www.apache.org/licenses/LICENSE-2.0 9 // 10 // Unless required by applicable law or agreed to in writing, software 11 // distributed under the License is distributed on an "AS IS" BASIS, 12 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 // See the License for the specific language governing permissions and 14 // limitations under the License. 15 // 16 17 #ifndef UPDATE_ENGINE_CHROME_BROWSER_PROXY_RESOLVER_H_ 18 #define UPDATE_ENGINE_CHROME_BROWSER_PROXY_RESOLVER_H_ 19 20 #include <deque> 21 #include <map> 22 #include <string> 23 #include <vector> 24 25 #include <base/memory/weak_ptr.h> 26 27 #include "update_engine/common/proxy_resolver.h" 28 29 namespace chromeos_update_engine { 30 31 class ChromeBrowserProxyResolver : public ProxyResolver { 32 public: 33 ChromeBrowserProxyResolver(); 34 ~ChromeBrowserProxyResolver() override; 35 36 // ProxyResolver: 37 ProxyRequestId GetProxiesForUrl(const std::string& url, 38 const ProxiesResolvedFn& callback) override; 39 bool CancelProxyRequest(ProxyRequestId request) override; 40 41 private: 42 // Callback for calls made by GetProxiesForUrl(). 43 void OnGetChromeProxyServers(ProxyRequestId request_id, 44 bool success, 45 const std::vector<std::string>& proxies); 46 47 // Finds the callback identified by |request_id| in |pending_callbacks_|, 48 // passes |proxies| to it, and deletes it. Does nothing if the request has 49 // been cancelled. 50 void RunCallback(ProxyRequestId request_id, 51 const std::deque<std::string>& proxies); 52 53 // Next ID to return from GetProxiesForUrl(). 54 ProxyRequestId next_request_id_; 55 56 // Callbacks that were passed to GetProxiesForUrl() but haven't yet been run. 57 std::map<ProxyRequestId, ProxiesResolvedFn> pending_callbacks_; 58 59 base::WeakPtrFactory<ChromeBrowserProxyResolver> weak_ptr_factory_; 60 61 DISALLOW_COPY_AND_ASSIGN(ChromeBrowserProxyResolver); 62 }; 63 64 } // namespace chromeos_update_engine 65 66 #endif // UPDATE_ENGINE_CHROME_BROWSER_PROXY_RESOLVER_H_ 67