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      1 //
      2 // Copyright (C) 2015 The Android Open Source Project
      3 //
      4 // Licensed under the Apache License, Version 2.0 (the "License");
      5 // you may not use this file except in compliance with the License.
      6 // You may obtain a copy of the License at
      7 //
      8 //      http://www.apache.org/licenses/LICENSE-2.0
      9 //
     10 // Unless required by applicable law or agreed to in writing, software
     11 // distributed under the License is distributed on an "AS IS" BASIS,
     12 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13 // See the License for the specific language governing permissions and
     14 // limitations under the License.
     15 //
     16 
     17 #ifndef UPDATE_ENGINE_DAEMON_H_
     18 #define UPDATE_ENGINE_DAEMON_H_
     19 
     20 #include <memory>
     21 #include <string>
     22 
     23 #if USE_WEAVE || USE_BINDER
     24 #include <brillo/binder_watcher.h>
     25 #endif  // USE_WEAVE || USE_BINDER
     26 #include <brillo/daemons/daemon.h>
     27 
     28 #if USE_BINDER
     29 #if USE_OMAHA
     30 #include "update_engine/binder_service_brillo.h"
     31 #else  // !USE_OMAHA
     32 #include "update_engine/binder_service_android.h"
     33 #endif  // USE_OMAHA
     34 #endif  // USE_BINDER
     35 #include "update_engine/common/subprocess.h"
     36 #include "update_engine/daemon_state_interface.h"
     37 #if USE_DBUS
     38 #include "update_engine/dbus_service.h"
     39 #endif  // USE_DBUS
     40 
     41 namespace chromeos_update_engine {
     42 
     43 class UpdateEngineDaemon : public brillo::Daemon {
     44  public:
     45   UpdateEngineDaemon() = default;
     46 
     47  protected:
     48   int OnInit() override;
     49 
     50  private:
     51 #if USE_DBUS
     52   // Run from the main loop when the |dbus_adaptor_| object is registered. At
     53   // this point we can request ownership of the DBus service name and continue
     54   // initialization.
     55   void OnDBusRegistered(bool succeeded);
     56 
     57   // Main D-Bus service adaptor.
     58   std::unique_ptr<UpdateEngineAdaptor> dbus_adaptor_;
     59 #endif  // USE_DBUS
     60 
     61   // The Subprocess singleton class requires a brillo::MessageLoop in the
     62   // current thread, so we need to initialize it from this class instead of
     63   // the main() function.
     64   Subprocess subprocess_;
     65 
     66 #if USE_WEAVE || USE_BINDER
     67   brillo::BinderWatcher binder_watcher_;
     68 #endif  // USE_WEAVE || USE_BINDER
     69 
     70 #if USE_BINDER
     71 #if USE_OMAHA
     72   android::sp<BinderUpdateEngineBrilloService> binder_service_;
     73 #else  // !USE_OMAHA
     74   android::sp<BinderUpdateEngineAndroidService> binder_service_;
     75 #endif  // USE_OMAHA
     76 #endif  // USE_BINDER
     77 
     78   // The daemon state with all the required daemon classes for the configured
     79   // platform.
     80   std::unique_ptr<DaemonStateInterface> daemon_state_;
     81 
     82   DISALLOW_COPY_AND_ASSIGN(UpdateEngineDaemon);
     83 };
     84 
     85 }  // namespace chromeos_update_engine
     86 
     87 #endif  // UPDATE_ENGINE_DAEMON_H_
     88