chrome/browser/net/http_server_properties_manager.h

   1 // Copyright (c) 2012 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 CHROME_BROWSER_NET_HTTP_SERVER_PROPERTIES_MANAGER_H_
   6 #define CHROME_BROWSER_NET_HTTP_SERVER_PROPERTIES_MANAGER_H_
   7
   8 #include <string>
   9 #include <vector>
  10 #include "base/basictypes.h"
  11 #include "base/compiler_specific.h"
  12 #include "base/memory/scoped_ptr.h"
  13 #include "base/memory/weak_ptr.h"
  14 #include "base/prefs/pref_change_registrar.h"
  15 #include "base/timer/timer.h"
  16 #include "base/values.h"
  17 #include "net/base/host_port_pair.h"
  18 #include "net/http/http_pipelined_host_capability.h"
  19 #include "net/http/http_server_properties.h"
  20 #include "net/http/http_server_properties_impl.h"
  21
  22 class PrefService;
  23
  24 namespace user_prefs {
  25 class PrefRegistrySyncable;
  26 }
  27
  28 namespace chrome_browser_net {
  29
  30 ////////////////////////////////////////////////////////////////////////////////
  31 //  HttpServerPropertiesManager
  32
  33 // The manager for creating and updating an HttpServerProperties (for example it
  34 // tracks if a server supports SPDY or not).
  35 //
  36 // This class interacts with both the UI thread, where notifications of pref
  37 // changes are received from, and the IO thread, which owns it (in the
  38 // ProfileIOData) and it persists the changes from network stack that if a
  39 // server supports SPDY or not.
  40 //
  41 // It must be constructed on the UI thread, to set up |ui_method_factory_| and
  42 // the prefs listeners.
  43 //
  44 // ShutdownOnUIThread must be called from UI before destruction, to release
  45 // the prefs listeners on the UI thread. This is done from ProfileIOData.
  46 //
  47 // Update tasks from the UI thread can post safely to the IO thread, since the
  48 // destruction order of Profile and ProfileIOData guarantees that if this
  49 // exists in UI, then a potential destruction on IO will come after any task
  50 // posted to IO from that method on UI. This is used to go through IO before
  51 // the actual update starts, and grab a WeakPtr.
  52 class HttpServerPropertiesManager
  53     : public net::HttpServerProperties {
  54  public:
  55   // Create an instance of the HttpServerPropertiesManager. The lifetime of the
  56   // PrefService objects must be longer than that of the
  57   // HttpServerPropertiesManager object. Must be constructed on the UI thread.
  58   explicit HttpServerPropertiesManager(PrefService* pref_service);
  59   virtual ~HttpServerPropertiesManager();
  60
  61   // Initialize |http_server_properties_impl_| and |io_method_factory_| on IO
  62   // thread. It also posts a task to UI thread to get SPDY Server preferences
  63   // from |pref_service_|.
  64   void InitializeOnIOThread();
  65
  66   // Prepare for shutdown. Must be called on the UI thread, before destruction.
  67   void ShutdownOnUIThread();
  68
  69   // Register |prefs| for properties managed here.
  70   static void RegisterProfilePrefs(user_prefs::PrefRegistrySyncable* registry);
  71
  72   // Helper function for unit tests to set the version in the dictionary.
  73   static void SetVersion(base::DictionaryValue* http_server_properties_dict,
  74                          int version_number);
  75
  76   // Deletes all data. Works asynchronously, but if a |completion| callback is
  77   // provided, it will be fired on the UI thread when everything is done.
  78   void Clear(const base::Closure& completion);
  79
  80   // ----------------------------------
  81   // net::HttpServerProperties methods:
  82   // ----------------------------------
  83
  84   // Gets a weak pointer for this object.
  85   virtual base::WeakPtr<net::HttpServerProperties> GetWeakPtr() OVERRIDE;
  86
  87   // Deletes all data. Works asynchronously.
  88   virtual void Clear() OVERRIDE;
  89
  90   // Returns true if |server| supports SPDY. Should only be called from IO
  91   // thread.
  92   virtual bool SupportsSpdy(const net::HostPortPair& server) const OVERRIDE;
  93
  94   // Add |server| as the SPDY server which supports SPDY protocol into the
  95   // persisitent store. Should only be called from IO thread.
  96   virtual void SetSupportsSpdy(const net::HostPortPair& server,
  97                                bool support_spdy) OVERRIDE;
  98
  99   // Returns true if |server| has an Alternate-Protocol header.
 100   virtual bool HasAlternateProtocol(
 101       const net::HostPortPair& server) const OVERRIDE;
 102
 103   // Returns the Alternate-Protocol and port for |server|.
 104   // HasAlternateProtocol(server) must be true.
 105   virtual net::PortAlternateProtocolPair GetAlternateProtocol(
 106       const net::HostPortPair& server) const OVERRIDE;
 107
 108   // Sets the Alternate-Protocol for |server|.
 109   virtual void SetAlternateProtocol(
 110       const net::HostPortPair& server,
 111       uint16 alternate_port,
 112       net::AlternateProtocol alternate_protocol) OVERRIDE;
 113
 114   // Sets the Alternate-Protocol for |server| to be BROKEN.
 115   virtual void SetBrokenAlternateProtocol(
 116       const net::HostPortPair& server) OVERRIDE;
 117
 118   // Returns all Alternate-Protocol mappings.
 119   virtual const net::AlternateProtocolMap&
 120       alternate_protocol_map() const OVERRIDE;
 121
 122   // Gets a reference to the SettingsMap stored for a host.
 123   // If no settings are stored, returns an empty SettingsMap.
 124   virtual const net::SettingsMap& GetSpdySettings(
 125       const net::HostPortPair& host_port_pair) const OVERRIDE;
 126
 127   // Saves an individual SPDY setting for a host. Returns true if SPDY setting
 128   // is to be persisted.
 129   virtual bool SetSpdySetting(const net::HostPortPair& host_port_pair,
 130                               net::SpdySettingsIds id,
 131                               net::SpdySettingsFlags flags,
 132                               uint32 value) OVERRIDE;
 133
 134   // Clears all SPDY settings for a host.
 135   virtual void ClearSpdySettings(
 136       const net::HostPortPair& host_port_pair) OVERRIDE;
 137
 138   // Clears all SPDY settings for all hosts.
 139   virtual void ClearAllSpdySettings() OVERRIDE;
 140
 141   // Returns all SPDY persistent settings.
 142   virtual const net::SpdySettingsMap& spdy_settings_map() const OVERRIDE;
 143
 144   virtual void SetServerNetworkStats(const net::HostPortPair& host_port_pair,
 145                                      NetworkStats stats) OVERRIDE;
 146
 147   virtual const NetworkStats* GetServerNetworkStats(
 148       const net::HostPortPair& host_port_pair) const OVERRIDE;
 149
 150   virtual net::HttpPipelinedHostCapability GetPipelineCapability(
 151       const net::HostPortPair& origin) OVERRIDE;
 152
 153   virtual void SetPipelineCapability(
 154       const net::HostPortPair& origin,
 155       net::HttpPipelinedHostCapability capability) OVERRIDE;
 156
 157   virtual void ClearPipelineCapabilities() OVERRIDE;
 158
 159   virtual net::PipelineCapabilityMap GetPipelineCapabilityMap() const OVERRIDE;
 160
 161  protected:
 162   // --------------------
 163   // SPDY related methods
 164
 165   // These are used to delay updating of the cached data in
 166   // |http_server_properties_impl_| while the preferences are changing, and
 167   // execute only one update per simultaneous prefs changes.
 168   void ScheduleUpdateCacheOnUI();
 169
 170   // Starts the timers to update the cached prefs. This are overridden in tests
 171   // to prevent the delay.
 172   virtual void StartCacheUpdateTimerOnUI(base::TimeDelta delay);
 173
 174   // Update cached prefs in |http_server_properties_impl_| with data from
 175   // preferences. It gets the data on UI thread and calls
 176   // UpdateSpdyServersFromPrefsOnIO() to perform the update on IO thread.
 177   virtual void UpdateCacheFromPrefsOnUI();
 178
 179   // Starts the update of cached prefs in |http_server_properties_impl_| on the
 180   // IO thread. Protected for testing.
 181   void UpdateCacheFromPrefsOnIO(
 182       std::vector<std::string>* spdy_servers,
 183       net::SpdySettingsMap* spdy_settings_map,
 184       net::AlternateProtocolMap* alternate_protocol_map,
 185       net::PipelineCapabilityMap* pipeline_capability_map,
 186       bool detected_corrupted_prefs);
 187
 188   // These are used to delay updating the preferences when cached data in
 189   // |http_server_properties_impl_| is changing, and execute only one update per
 190   // simultaneous spdy_servers or spdy_settings or alternate_protocol changes.
 191   void ScheduleUpdatePrefsOnIO();
 192
 193   // Starts the timers to update the prefs from cache. This are overridden in
 194   // tests to prevent the delay.
 195   virtual void StartPrefsUpdateTimerOnIO(base::TimeDelta delay);
 196
 197   // Update prefs::kHttpServerProperties in preferences with the cached data
 198   // from |http_server_properties_impl_|. This gets the data on IO thread and
 199   // posts a task (UpdatePrefsOnUI) to update the preferences UI thread.
 200   void UpdatePrefsFromCacheOnIO();
 201
 202   // Same as above, but fires an optional |completion| callback on the UI thread
 203   // when finished. Virtual for testing.
 204   virtual void UpdatePrefsFromCacheOnIO(const base::Closure& completion);
 205
 206   // Update prefs::kHttpServerProperties preferences on UI thread. Executes an
 207   // optional |completion| callback when finished. Protected for testing.
 208   void UpdatePrefsOnUI(
 209       base::ListValue* spdy_server_list,
 210       net::SpdySettingsMap* spdy_settings_map,
 211       net::AlternateProtocolMap* alternate_protocol_map,
 212       net::PipelineCapabilityMap* pipeline_capability_map,
 213       const base::Closure& completion);
 214
 215  private:
 216   void OnHttpServerPropertiesChanged();
 217
 218   // ---------
 219   // UI thread
 220   // ---------
 221
 222   // Used to get |weak_ptr_| to self on the UI thread.
 223   scoped_ptr<base::WeakPtrFactory<HttpServerPropertiesManager> >
 224       ui_weak_ptr_factory_;
 225
 226   base::WeakPtr<HttpServerPropertiesManager> ui_weak_ptr_;
 227
 228   // Used to post cache update tasks.
 229   scoped_ptr<base::OneShotTimer<HttpServerPropertiesManager> >
 230       ui_cache_update_timer_;
 231
 232   // Used to track the spdy servers changes.
 233   PrefChangeRegistrar pref_change_registrar_;
 234   PrefService* pref_service_;  // Weak.
 235   bool setting_prefs_;
 236
 237   // ---------
 238   // IO thread
 239   // ---------
 240
 241   // Used to get |weak_ptr_| to self on the IO thread.
 242   scoped_ptr<base::WeakPtrFactory<HttpServerPropertiesManager> >
 243       io_weak_ptr_factory_;
 244
 245   // Used to post |prefs::kHttpServerProperties| pref update tasks.
 246   scoped_ptr<base::OneShotTimer<HttpServerPropertiesManager> >
 247       io_prefs_update_timer_;
 248
 249   scoped_ptr<net::HttpServerPropertiesImpl> http_server_properties_impl_;
 250
 251   DISALLOW_COPY_AND_ASSIGN(HttpServerPropertiesManager);
 252 };
 253
 254 }  // namespace chrome_browser_net
 255
 256 #endif  // CHROME_BROWSER_NET_HTTP_SERVER_PROPERTIES_MANAGER_H_