components/cronet/android/url_request_context_adapter.h

   1 // Copyright 2014 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef COMPONENTS_CRONET_ANDROID_URL_REQUEST_CONTEXT_ADAPTER_H_
   6 #define COMPONENTS_CRONET_ANDROID_URL_REQUEST_CONTEXT_ADAPTER_H_
   7
   8 #include <queue>
   9 #include <string>
  10
  11 #include "base/callback.h"
  12 #include "base/compiler_specific.h"
  13 #include "base/location.h"
  14 #include "base/macros.h"
  15 #include "base/memory/ref_counted.h"
  16 #include "base/memory/scoped_ptr.h"
  17 #include "base/threading/thread.h"
  18 #include "net/base/net_log.h"
  19 #include "net/url_request/url_request_context.h"
  20 #include "net/url_request/url_request_context_getter.h"
  21
  22 namespace net {
  23
  24 class NetLogLogger;
  25
  26 class ProxyConfigService;
  27
  28 }  // namespace net
  29
  30 namespace cronet {
  31
  32 struct URLRequestContextConfig;
  33 typedef base::Callback<void(void)> RunAfterContextInitTask;
  34
  35 // Implementation of the Chromium NetLog observer interface.
  36 class NetLogObserver : public net::NetLog::ThreadSafeObserver {
  37  public:
  38   NetLogObserver() {}
  39
  40   virtual ~NetLogObserver() {}
  41
  42   void OnAddEntry(const net::NetLog::Entry& entry) override;
  43
  44  private:
  45   DISALLOW_COPY_AND_ASSIGN(NetLogObserver);
  46 };
  47
  48 // Fully configured |URLRequestContext|.
  49 class URLRequestContextAdapter : public net::URLRequestContextGetter {
  50  public:
  51   class URLRequestContextAdapterDelegate
  52       : public base::RefCountedThreadSafe<URLRequestContextAdapterDelegate> {
  53    public:
  54     virtual void OnContextInitialized(URLRequestContextAdapter* context) = 0;
  55
  56    protected:
  57     friend class base::RefCountedThreadSafe<URLRequestContextAdapterDelegate>;
  58
  59     virtual ~URLRequestContextAdapterDelegate() {}
  60   };
  61
  62   URLRequestContextAdapter(URLRequestContextAdapterDelegate* delegate,
  63                            std::string user_agent);
  64   void Initialize(scoped_ptr<URLRequestContextConfig> config);
  65
  66   // Posts a task that might depend on the context being initialized
  67   // to the network thread.
  68   void PostTaskToNetworkThread(const tracked_objects::Location& posted_from,
  69                                const RunAfterContextInitTask& callback);
  70
  71   // Runs a task that might depend on the context being initialized.
  72   // This method should only be run on the network thread.
  73   void RunTaskAfterContextInitOnNetworkThread(
  74       const RunAfterContextInitTask& callback);
  75
  76   const std::string& GetUserAgent(const GURL& url) const;
  77
  78   // net::URLRequestContextGetter implementation:
  79   net::URLRequestContext* GetURLRequestContext() override;
  80   scoped_refptr<base::SingleThreadTaskRunner> GetNetworkTaskRunner()
  81       const override;
  82
  83   void StartNetLogToFile(const std::string& file_name);
  84   void StopNetLog();
  85
  86   // Called on main Java thread to initialize URLRequestContext.
  87   void InitRequestContextOnMainThread();
  88
  89  private:
  90   scoped_refptr<URLRequestContextAdapterDelegate> delegate_;
  91   scoped_ptr<net::URLRequestContext> context_;
  92   std::string user_agent_;
  93   base::Thread* network_thread_;
  94   scoped_ptr<NetLogObserver> net_log_observer_;
  95   scoped_ptr<net::NetLogLogger> net_log_logger_;
  96   scoped_ptr<net::ProxyConfigService> proxy_config_service_;
  97   scoped_ptr<URLRequestContextConfig> config_;
  98
  99   // A queue of tasks that need to be run after context has been initialized.
 100   std::queue<RunAfterContextInitTask> tasks_waiting_for_context_;
 101   bool is_context_initialized_ = false;
 102
 103   virtual ~URLRequestContextAdapter();
 104
 105   // Initializes |context_| on the Network thread.
 106   void InitRequestContextOnNetworkThread();
 107
 108   // Helper function to start writing NetLog data to file. This should only be
 109   // run after context is initialized.
 110   void StartNetLogToFileHelper(const std::string& file_name);
 111   // Helper function to stop writing NetLog data to file. This should only be
 112   // run after context is initialized.
 113   void StopNetLogHelper();
 114
 115   DISALLOW_COPY_AND_ASSIGN(URLRequestContextAdapter);
 116 };
 117
 118 }  // namespace cronet
 119
 120 #endif  // COMPONENTS_CRONET_ANDROID_URL_REQUEST_CONTEXT_ADAPTER_H_