chromeos/dbus/dbus_thread_manager.h

   1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef CHROMEOS_DBUS_DBUS_THREAD_MANAGER_H_
   6 #define CHROMEOS_DBUS_DBUS_THREAD_MANAGER_H_
   7
   8 #include "base/callback.h"
   9 #include "base/memory/ref_counted.h"
  10 #include "base/memory/scoped_ptr.h"
  11 #include "chromeos/chromeos_export.h"
  12 #include "chromeos/dbus/dbus_client_bundle.h"
  13
  14 namespace base {
  15 class Thread;
  16 }  // namespace base
  17
  18 namespace dbus {
  19 class Bus;
  20 class ObjectPath;
  21 }  // namespace dbus
  22
  23 namespace chromeos {
  24
  25 // Style Note: Clients are sorted by names.
  26 class BluetoothAdapterClient;
  27 class BluetoothAgentManagerClient;
  28 class BluetoothDeviceClient;
  29 class BluetoothGattCharacteristicClient;
  30 class BluetoothGattDescriptorClient;
  31 class BluetoothGattManagerClient;
  32 class BluetoothGattServiceClient;
  33 class BluetoothInputClient;
  34 class BluetoothProfileManagerClient;
  35 class CrasAudioClient;
  36 class CrosDisksClient;
  37 class CryptohomeClient;
  38 class DBusClient;
  39 class DBusThreadManager;
  40 class DBusThreadManagerSetter;
  41 class DebugDaemonClient;
  42 class EasyUnlockClient;
  43 class GsmSMSClient;
  44 class ImageBurnerClient;
  45 class IntrospectableClient;
  46 class LorgnetteManagerClient;
  47 class ModemMessagingClient;
  48 class NfcAdapterClient;
  49 class NfcDeviceClient;
  50 class NfcManagerClient;
  51 class NfcRecordClient;
  52 class NfcTagClient;
  53 class PermissionBrokerClient;
  54 class PowerManagerClient;
  55 class PowerPolicyController;
  56 class SessionManagerClient;
  57 class ShillDeviceClient;
  58 class ShillIPConfigClient;
  59 class ShillManagerClient;
  60 class ShillProfileClient;
  61 class ShillServiceClient;
  62 class SMSClient;
  63 class SystemClockClient;
  64 class UpdateEngineClient;
  65
  66 // DBusThreadManager manages the D-Bus thread, the thread dedicated to
  67 // handling asynchronous D-Bus operations.
  68 //
  69 // This class also manages D-Bus connections and D-Bus clients, which
  70 // depend on the D-Bus thread to ensure the right order of shutdowns for
  71 // the D-Bus thread, the D-Bus connections, and the D-Bus clients.
  72 //
  73 // CALLBACKS IN D-BUS CLIENTS:
  74 //
  75 // D-Bus clients managed by DBusThreadManager are guaranteed to be deleted
  76 // after the D-Bus thread so the clients don't need to worry if new
  77 // incoming messages arrive from the D-Bus thread during shutdown of the
  78 // clients. The UI message loop is not running during the shutdown hence
  79 // the UI message loop won't post tasks to D-BUS clients during the
  80 // shutdown. However, to be extra cautious, clients should use
  81 // WeakPtrFactory when creating callbacks that run on UI thread. See
  82 // session_manager_client.cc for examples.
  83 //
  84 class CHROMEOS_EXPORT DBusThreadManager {
  85  public:
  86   // Sets the global instance. Must be called before any calls to Get().
  87   // We explicitly initialize and shut down the global object, rather than
  88   // making it a Singleton, to ensure clean startup and shutdown.
  89   // This will initialize real or stub DBusClients depending on command-line
  90   // arguments and whether this process runs in a ChromeOS environment.
  91   static void Initialize();
  92
  93   // Returns a DBusThreadManagerSetter instance that allows tests to
  94   // replace individual D-Bus clients with their own implementations.
  95   // Also initializes the main DBusThreadManager for testing if necessary.
  96   static scoped_ptr<DBusThreadManagerSetter> GetSetterForTesting();
  97
  98   // Returns true if DBusThreadManager has been initialized. Call this to
  99   // avoid initializing + shutting down DBusThreadManager more than once.
 100   static bool IsInitialized();
 101
 102   // Destroys the global instance.
 103   static void Shutdown();
 104
 105   // Gets the global instance. Initialize() must be called first.
 106   static DBusThreadManager* Get();
 107
 108   // Returns true if |client| is stubbed.
 109   bool IsUsingStub(DBusClientBundle::DBusClientType client);
 110
 111   // Returns various D-Bus bus instances, owned by DBusThreadManager.
 112   dbus::Bus* GetSystemBus();
 113
 114   // All returned objects are owned by DBusThreadManager.  Do not cache these
 115   // pointers and use them after DBusThreadManager has been shut down.
 116   BluetoothAdapterClient* GetBluetoothAdapterClient();
 117   BluetoothAgentManagerClient* GetBluetoothAgentManagerClient();
 118   BluetoothDeviceClient* GetBluetoothDeviceClient();
 119   BluetoothGattCharacteristicClient* GetBluetoothGattCharacteristicClient();
 120   BluetoothGattDescriptorClient* GetBluetoothGattDescriptorClient();
 121   BluetoothGattManagerClient* GetBluetoothGattManagerClient();
 122   BluetoothGattServiceClient* GetBluetoothGattServiceClient();
 123   BluetoothInputClient* GetBluetoothInputClient();
 124   BluetoothProfileManagerClient* GetBluetoothProfileManagerClient();
 125   CrasAudioClient* GetCrasAudioClient();
 126   CrosDisksClient* GetCrosDisksClient();
 127   CryptohomeClient* GetCryptohomeClient();
 128   DebugDaemonClient* GetDebugDaemonClient();
 129   EasyUnlockClient* GetEasyUnlockClient();
 130   GsmSMSClient* GetGsmSMSClient();
 131   ImageBurnerClient* GetImageBurnerClient();
 132   IntrospectableClient* GetIntrospectableClient();
 133   LorgnetteManagerClient* GetLorgnetteManagerClient();
 134   ModemMessagingClient* GetModemMessagingClient();
 135   NfcAdapterClient* GetNfcAdapterClient();
 136   NfcDeviceClient* GetNfcDeviceClient();
 137   NfcManagerClient* GetNfcManagerClient();
 138   NfcRecordClient* GetNfcRecordClient();
 139   NfcTagClient* GetNfcTagClient();
 140   PermissionBrokerClient* GetPermissionBrokerClient();
 141   PowerManagerClient* GetPowerManagerClient();
 142   PowerPolicyController* GetPowerPolicyController();
 143   SessionManagerClient* GetSessionManagerClient();
 144   ShillDeviceClient* GetShillDeviceClient();
 145   ShillIPConfigClient* GetShillIPConfigClient();
 146   ShillManagerClient* GetShillManagerClient();
 147   ShillServiceClient* GetShillServiceClient();
 148   ShillProfileClient* GetShillProfileClient();
 149   SMSClient* GetSMSClient();
 150   SystemClockClient* GetSystemClockClient();
 151   UpdateEngineClient* GetUpdateEngineClient();
 152
 153  private:
 154   friend class DBusThreadManagerSetter;
 155
 156   // Creates a new DBusThreadManager using the DBusClients set in
 157   // |client_bundle|.
 158   explicit DBusThreadManager(scoped_ptr<DBusClientBundle> client_bundle);
 159   ~DBusThreadManager();
 160
 161   // Creates a global instance of DBusThreadManager with the real
 162   // implementations for all clients that are listed in |unstub_client_mask| and
 163   // stub implementations for all clients that are not included. Cannot be
 164   // called more than once.
 165   static void CreateGlobalInstance(
 166       DBusClientBundle::DBusClientTypeMask unstub_client_mask);
 167
 168   // Initialize global thread manager instance with all real dbus client
 169   // implementations.
 170   static void InitializeWithRealClients();
 171
 172   // Initialize global thread manager instance with stubbed-out dbus clients
 173   // implementation.
 174   static void InitializeWithStubs();
 175
 176   // Initialize with stub implementations for only certain clients that are
 177   // not included in the comma-separated |unstub_clients| list.
 178   static void InitializeWithPartialStub(const std::string& unstub_clients);
 179
 180   // Initializes all currently stored DBusClients with the system bus and
 181   // performs additional setup.
 182   void InitializeClients();
 183
 184   scoped_ptr<base::Thread> dbus_thread_;
 185   scoped_refptr<dbus::Bus> system_bus_;
 186   scoped_ptr<DBusClientBundle> client_bundle_;
 187   scoped_ptr<PowerPolicyController> power_policy_controller_;
 188
 189   DISALLOW_COPY_AND_ASSIGN(DBusThreadManager);
 190 };
 191
 192 class CHROMEOS_EXPORT DBusThreadManagerSetter {
 193  public:
 194   ~DBusThreadManagerSetter();
 195
 196   void SetBluetoothAdapterClient(scoped_ptr<BluetoothAdapterClient> client);
 197   void SetBluetoothAgentManagerClient(
 198       scoped_ptr<BluetoothAgentManagerClient> client);
 199   void SetBluetoothDeviceClient(scoped_ptr<BluetoothDeviceClient> client);
 200   void SetBluetoothGattCharacteristicClient(
 201       scoped_ptr<BluetoothGattCharacteristicClient> client);
 202   void SetBluetoothGattDescriptorClient(
 203       scoped_ptr<BluetoothGattDescriptorClient> client);
 204   void SetBluetoothGattManagerClient(
 205       scoped_ptr<BluetoothGattManagerClient> client);
 206   void SetBluetoothGattServiceClient(
 207       scoped_ptr<BluetoothGattServiceClient> client);
 208   void SetBluetoothInputClient(scoped_ptr<BluetoothInputClient> client);
 209   void SetBluetoothProfileManagerClient(
 210       scoped_ptr<BluetoothProfileManagerClient> client);
 211   void SetCrasAudioClient(scoped_ptr<CrasAudioClient> client);
 212   void SetCrosDisksClient(scoped_ptr<CrosDisksClient> client);
 213   void SetCryptohomeClient(scoped_ptr<CryptohomeClient> client);
 214   void SetDebugDaemonClient(scoped_ptr<DebugDaemonClient> client);
 215   void SetEasyUnlockClient(scoped_ptr<EasyUnlockClient> client);
 216   void SetLorgnetteManagerClient(scoped_ptr<LorgnetteManagerClient> client);
 217   void SetShillDeviceClient(scoped_ptr<ShillDeviceClient> client);
 218   void SetShillIPConfigClient(scoped_ptr<ShillIPConfigClient> client);
 219   void SetShillManagerClient(scoped_ptr<ShillManagerClient> client);
 220   void SetShillServiceClient(scoped_ptr<ShillServiceClient> client);
 221   void SetShillProfileClient(scoped_ptr<ShillProfileClient> client);
 222   void SetGsmSMSClient(scoped_ptr<GsmSMSClient> client);
 223   void SetImageBurnerClient(scoped_ptr<ImageBurnerClient> client);
 224   void SetIntrospectableClient(scoped_ptr<IntrospectableClient> client);
 225   void SetModemMessagingClient(scoped_ptr<ModemMessagingClient> client);
 226   void SetNfcAdapterClient(scoped_ptr<NfcAdapterClient> client);
 227   void SetNfcDeviceClient(scoped_ptr<NfcDeviceClient> client);
 228   void SetNfcManagerClient(scoped_ptr<NfcManagerClient> client);
 229   void SetNfcRecordClient(scoped_ptr<NfcRecordClient> client);
 230   void SetNfcTagClient(scoped_ptr<NfcTagClient> client);
 231   void SetPermissionBrokerClient(scoped_ptr<PermissionBrokerClient> client);
 232   void SetPowerManagerClient(scoped_ptr<PowerManagerClient> client);
 233   void SetSessionManagerClient(scoped_ptr<SessionManagerClient> client);
 234   void SetSMSClient(scoped_ptr<SMSClient> client);
 235   void SetSystemClockClient(scoped_ptr<SystemClockClient> client);
 236   void SetUpdateEngineClient(scoped_ptr<UpdateEngineClient> client);
 237
 238  private:
 239   friend class DBusThreadManager;
 240
 241   DBusThreadManagerSetter();
 242
 243   DISALLOW_COPY_AND_ASSIGN(DBusThreadManagerSetter);
 244 };
 245
 246 }  // namespace chromeos
 247
 248 #endif  // CHROMEOS_DBUS_DBUS_THREAD_MANAGER_H_