AU: Resume interrupted update attempts.

update_attempter.h

 // Copyright (c) 2010 The Chromium OS Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CHROMEOS_PLATFORM_UPDATE_ENGINE_UPDATE_ATTEMPTER_H__
 #define CHROMEOS_PLATFORM_UPDATE_ENGINE_UPDATE_ATTEMPTER_H__
 
 #include <time.h>
 
 #include <tr1/memory>
@@ skipping 98 matching lines @@
  private:
   friend class UpdateAttempterTest;
   FRIEND_TEST(UpdateAttempterTest, DisableDeltaUpdateIfNeededTest);
   FRIEND_TEST(UpdateAttempterTest, MarkDeltaUpdateFailureTest);
   FRIEND_TEST(UpdateAttempterTest, UpdateTest);
 
   // Sets the status to the given status and notifies a status update
   // over dbus.
   void SetStatusAndNotify(UpdateStatus status);
 
-  // Creates an error event object in |error_event_| to be included in
-  // an OmahaRequestAction once the current action processor is done.
+  // Sets up the download parameters after receiving the update check response.
+  void SetupDownload();
+
+  // Creates an error event object in |error_event_| to be included in an
+  // OmahaRequestAction once the current action processor is done.
   void CreatePendingErrorEvent(AbstractAction* action, ActionExitCode code);
 
-  // If there's a pending error event allocated in |error_event_|,
-  // schedules an OmahaRequestAction with that event in the current
-  // processor, clears the pending event, updates the status and
-  // returns true. Returns false otherwise.
+  // If there's a pending error event allocated in |error_event_|, schedules an
+  // OmahaRequestAction with that event in the current processor, clears the
+  // pending event, updates the status and returns true. Returns false
+  // otherwise.
   bool ScheduleErrorEventAction();
 
-  // Sets the process priority to |priority| and updates |priority_|
-  // if the new |priority| is different than the current |priority_|,
-  // otherwise simply returns.
+  // Sets the process priority to |priority| and updates |priority_| if the new
+  // |priority| is different than the current |priority_|, otherwise simply
+  // returns.
   void SetPriority(utils::ProcessPriority priority);
 
-  // Set the process priority to low and sets up timeout events to
-  // increase the priority gradually to high.
+  // Set the process priority to low and sets up timeout events to increase the
+  // priority gradually to high.
   void SetupPriorityManagement();
 
-  // Resets the process priority to normal and destroys any scheduled
-  // timeout sources.
+  // Resets the process priority to normal and destroys any scheduled timeout
+  // sources.
   void CleanupPriorityManagement();
 
-  // The process priority timeout source callback increases the
-  // current priority by one step (low goes to normal, normal goes to
-  // high). Returns true if the callback must be invoked again after a
-  // timeout, or false if GLib can destroy this timeout source.
+  // The process priority timeout source callback increases the current priority
+  // by one step (low goes to normal, normal goes to high). Returns true if the
+  // callback must be invoked again after a timeout, or false if GLib can
+  // destroy this timeout source.
   static gboolean StaticManagePriorityCallback(gpointer data);
   bool ManagePriorityCallback();
 
   // Checks if a full update is needed and forces it by updating the Omaha
   // request params.
   void DisableDeltaUpdateIfNeeded();
 
   // If this was a delta update attempt that failed, count it so that a full
   // update can be tried when needed.
   void MarkDeltaUpdateFailure();
 
-  // Last status notification timestamp used for throttling. Use
-  // monotonic TimeTicks to ensure that notifications are sent even if
-  // the system clock is set back in the middle of an update.
+  // Last status notification timestamp used for throttling. Use monotonic
+  // TimeTicks to ensure that notifications are sent even if the system clock is
+  // set back in the middle of an update.
   base::TimeTicks last_notify_time_;
 
   std::vector<std::tr1::shared_ptr<AbstractAction> > actions_;
   scoped_ptr<ActionProcessor> processor_;
 
   // If non-null, this UpdateAttempter will send status updates over this
   // dbus service.
   UpdateEngineService* dbus_service_;
 
-  // pointer to the OmahaResponseHandlerAction in the actions_ vector;
+  // Pointer to the OmahaResponseHandlerAction in the actions_ vector.
   std::tr1::shared_ptr<OmahaResponseHandlerAction> response_handler_action_;
 
+  // Pointer to the DownloadAction in the actions_ vector.
+  std::tr1::shared_ptr<DownloadAction> download_action_;
+
   // Pointer to the preferences store interface.
   PrefsInterface* prefs_;
 
   // Pointer to the UMA metrics collection library.
   MetricsLibraryInterface* metrics_lib_;
 
   // The current UpdateCheckScheduler to notify of state transitions.
   UpdateCheckScheduler* update_check_scheduler_;
 
   // Pending error event, if any.
@@ skipping 22 matching lines @@
 
   // Device paramaters common to all Omaha requests.
   OmahaRequestDeviceParams omaha_request_params_;
 
   DISALLOW_COPY_AND_ASSIGN(UpdateAttempter);
 };
 
 }  // namespace chromeos_update_engine
 
 #endif  // CHROMEOS_PLATFORM_UPDATE_ENGINE_UPDATE_ATTEMPTER_H__