AU: A basic framework for sending error events when update attempt fails.

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>
 #include <string>
@@ skipping 11 matching lines @@
 
 extern const char* kUpdateCompletedMarker;
 
 enum UpdateStatus {
   UPDATE_STATUS_IDLE = 0,
   UPDATE_STATUS_CHECKING_FOR_UPDATE,
   UPDATE_STATUS_UPDATE_AVAILABLE,
   UPDATE_STATUS_DOWNLOADING,
   UPDATE_STATUS_VERIFYING,
   UPDATE_STATUS_FINALIZING,
-  UPDATE_STATUS_UPDATED_NEED_REBOOT
+  UPDATE_STATUS_UPDATED_NEED_REBOOT,
+  UPDATE_STATUS_REPORTING_ERROR_EVENT,
 };
 
 const char* UpdateStatusToString(UpdateStatus status);
 
 class UpdateAttempter : public ActionProcessorDelegate,
                         public DownloadActionDelegate {
  public:
   UpdateAttempter(MetricsLibraryInterface* metrics_lib)
       : dbus_service_(NULL),
         metrics_lib_(metrics_lib),
@@ skipping 37 matching lines @@
   void CheckForUpdate();
 
   // DownloadActionDelegate method
   void BytesReceived(uint64_t bytes_received, uint64_t total);
 
  private:
   // 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.
+  void CreatePendingErrorEvent(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.
+  bool ScheduleErrorEventAction();
+
   struct timespec last_notify_time_;
 
   std::vector<std::tr1::shared_ptr<AbstractAction> > actions_;
   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;
   std::tr1::shared_ptr<OmahaResponseHandlerAction> response_handler_action_;
 
   // Pointer to the UMA metrics collection library.
   MetricsLibraryInterface* metrics_lib_;
 
+  // Pending error event, if any.
+  scoped_ptr<OmahaEvent> error_event_;
+
   // For status:
   UpdateStatus status_;
   double download_progress_;
   int64_t last_checked_time_;
   std::string new_version_;
   int64_t new_size_;
 
   // 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__