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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 #if USE_DBUS
     28 #include <brillo/dbus/dbus_connection.h>
     29 #endif  // USE_DBUS
     30 
     31 #if USE_BINDER
     32 #if defined(__BRILLO__) || defined(__CHROMEOS__)
     33 #include "update_engine/binder_service_brillo.h"
     34 #else  // !(defined(__BRILLO__) || defined(__CHROMEOS__))
     35 #include "update_engine/binder_service_android.h"
     36 #endif  // defined(__BRILLO__) || defined(__CHROMEOS__)
     37 #endif  // USE_BINDER
     38 #include "update_engine/common/subprocess.h"
     39 #include "update_engine/daemon_state_interface.h"
     40 #if USE_DBUS
     41 #include "update_engine/dbus_service.h"
     42 #endif  // USE_DBUS
     43 
     44 namespace chromeos_update_engine {
     45 
     46 class UpdateEngineDaemon : public brillo::Daemon {
     47  public:
     48   UpdateEngineDaemon() = default;
     49 
     50  protected:
     51   int OnInit() override;
     52 
     53  private:
     54 #if USE_DBUS
     55   // Run from the main loop when the |dbus_adaptor_| object is registered. At
     56   // this point we can request ownership of the DBus service name and continue
     57   // initialization.
     58   void OnDBusRegistered(bool succeeded);
     59 
     60   // Main D-Bus connection and service adaptor.
     61   brillo::DBusConnection dbus_connection_;
     62   std::unique_ptr<UpdateEngineAdaptor> dbus_adaptor_;
     63 #endif  // USE_DBUS
     64 
     65   // The Subprocess singleton class requires a brillo::MessageLoop in the
     66   // current thread, so we need to initialize it from this class instead of
     67   // the main() function.
     68   Subprocess subprocess_;
     69 
     70 #if USE_WEAVE || USE_BINDER
     71   brillo::BinderWatcher binder_watcher_;
     72 #endif  // USE_WEAVE || USE_BINDER
     73 
     74 #if USE_BINDER
     75 #if defined(__BRILLO__) || defined(__CHROMEOS__)
     76   android::sp<BinderUpdateEngineBrilloService> binder_service_;
     77 #else  // !(defined(__BRILLO__) || defined(__CHROMEOS__))
     78   android::sp<BinderUpdateEngineAndroidService> binder_service_;
     79 #endif  // defined(__BRILLO__) || defined(__CHROMEOS__)
     80 #endif  // USE_BINDER
     81 
     82   // The daemon state with all the required daemon classes for the configured
     83   // platform.
     84   std::unique_ptr<DaemonStateInterface> daemon_state_;
     85 
     86   DISALLOW_COPY_AND_ASSIGN(UpdateEngineDaemon);
     87 };
     88 
     89 }  // namespace chromeos_update_engine
     90 
     91 #endif  // UPDATE_ENGINE_DAEMON_H_
     92