CrOS - Check current state of update-engine on startup

chrome/browser/chromeos/cros/update_library.cc

 // Copyright (c) 2011 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chrome/browser/chromeos/cros/update_library.h"
 
 #include "base/message_loop.h"
 #include "base/string_util.h"
 #include "chrome/browser/chromeos/cros/cros_library.h"
 #include "content/browser/browser_thread.h"
 #include "content/common/notification_service.h"
 #include "content/common/notification_type.h"
 
 namespace chromeos {
 
 class UpdateLibraryImpl : public UpdateLibrary {
  public:
   UpdateLibraryImpl()
     : status_connection_(NULL) {
     if (CrosLibrary::Get()->EnsureLoaded()) {
       Init();
     }
   }
 
-  ~UpdateLibraryImpl() {
+  virtual ~UpdateLibraryImpl() {
     if (status_connection_) {
       DisconnectUpdateProgress(status_connection_);
     }
   }
 
   void AddObserver(Observer* observer) {
     observers_.AddObserver(observer);
   }
 
   void RemoveObserver(Observer* observer) {
@@ skipping 33 matching lines @@
 
  private:
   static void ChangedHandler(void* object,
       const UpdateProgress& status) {
     UpdateLibraryImpl* updater = static_cast<UpdateLibraryImpl*>(object);
     updater->UpdateStatus(Status(status));
   }
 
   void Init() {
     status_connection_ = MonitorUpdateStatus(&ChangedHandler, this);
+    // Asynchronously load the initial state.
+    RequestUpdateStatus(&ChangedHandler, this);
   }
 
   void UpdateStatus(const Status& status) {
     // Make sure we run on UI thread.
     if (!BrowserThread::CurrentlyOn(BrowserThread::UI)) {
       BrowserThread::PostTask(
           BrowserThread::UI, FROM_HERE,
           NewRunnableMethod(this, &UpdateLibraryImpl::UpdateStatus, status));
       return;
     }
@@ skipping 19 matching lines @@
 
   // The latest power status.
   Status status_;
 
   DISALLOW_COPY_AND_ASSIGN(UpdateLibraryImpl);
 };
 
 class UpdateLibraryStubImpl : public UpdateLibrary {
  public:
   UpdateLibraryStubImpl() {}
-  ~UpdateLibraryStubImpl() {}
+  virtual ~UpdateLibraryStubImpl() {}
   void AddObserver(Observer* observer) {}
   void RemoveObserver(Observer* observer) {}
   bool HasObserver(Observer* observer) { return false; }
   void RequestUpdateCheck(chromeos::UpdateCallback callback, void* user_data) {
     if (callback)
       callback(user_data, UPDATE_RESULT_FAILED, "stub update");
   }
   bool RebootAfterUpdate() { return false; }
   void SetReleaseTrack(const std::string& track) { }
   void GetReleaseTrack(chromeos::UpdateTrackCallback callback,
@@ skipping 17 matching lines @@
     return new UpdateLibraryStubImpl();
   else
     return new UpdateLibraryImpl();
 }
 
 }  // namespace chromeos
 
 // Allows InvokeLater without adding refcounting. This class is a Singleton and
 // won't be deleted until it's last InvokeLater is run.
 DISABLE_RUNNABLE_METHOD_REFCOUNT(chromeos::UpdateLibraryImpl);