AU: Beginnings of dbus support.

src/platform/update_engine/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 <tr1/memory>
+#include <string>
+#include <vector>
+#include <glib.h>
+#include "update_engine/action_processor.h"
+#include "update_engine/omaha_response_handler_action.h"
+
+namespace chromeos_update_engine {
+
+class UpdateAttempter : public ActionProcessorDelegate {
+ public:
+  explicit UpdateAttempter(GMainLoop *loop)
+      : full_update_(false),
+        loop_(loop) {}
+  void Update(bool force_full_update);
+  
+  // Delegate method:
+  void ProcessingDone(const ActionProcessor* processor, bool success);
+  
+  // Stop updating. An attempt will be made to record status to the disk
+  // so that updates can be resumed later.
+  void Terminate();
+  
+  // Try to resume from a previously Terminate()d update.
+  void ResumeUpdating();
+  
+  // Returns the current status in the out params. Returns true on success.
+  bool GetStatus(int64_t* last_checked_time,
+                 double* progress,
+                 std::string* current_operation,
+                 std::string* new_version,
+                 int64_t* new_size);
+
+ private:
+  bool full_update_;
+  std::vector<std::tr1::shared_ptr<AbstractAction> > actions_;
+  ActionProcessor processor_;
+  GMainLoop *loop_;
+
+  // pointer to the OmahaResponseHandlerAction in the actions_ vector;
+  std::tr1::shared_ptr<OmahaResponseHandlerAction> response_handler_action_;
+  DISALLOW_COPY_AND_ASSIGN(UpdateAttempter);
+};
+
+}  // namespace chromeos_update_engine
+
+#endif  // CHROMEOS_PLATFORM_UPDATE_ENGINE_UPDATE_ATTEMPTER_H__