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 <string>
   9
  10 #include "base/callback.h"
  11 #include "base/memory/ref_counted.h"
  12 #include "base/memory/scoped_ptr.h"
  13 #include "chromeos/chromeos_export.h"
  14 #include "chromeos/dbus/dbus_client_bundle.h"
  15
  16 namespace base {
  17 class Thread;
  18 }  // namespace base
  19
  20 namespace dbus {
  21 class Bus;
  22 class ObjectPath;
  23 }  // namespace dbus
  24
  25 namespace chromeos {
  26
  27 // Style Note: Clients are sorted by names.
  28 class BluetoothAdapterClient;
  29 class BluetoothAgentManagerClient;
  30 class BluetoothDeviceClient;
  31 class BluetoothGattCharacteristicClient;
  32 class BluetoothGattDescriptorClient;
  33 class BluetoothGattManagerClient;
  34 class BluetoothGattServiceClient;
  35 class BluetoothInputClient;
  36 class BluetoothMediaClient;
  37 class BluetoothMediaTransportClient;
  38 class BluetoothProfileManagerClient;
  39 class CrasAudioClient;
  40 class CrosDisksClient;
  41 class CryptohomeClient;
  42 class DBusThreadManagerSetter;
  43 class DebugDaemonClient;
  44 class EasyUnlockClient;
  45 class GsmSMSClient;
  46 class ImageBurnerClient;
  47 class IntrospectableClient;
  48 class LeadershipDaemonManagerClient;
  49 class LorgnetteManagerClient;
  50 class ModemMessagingClient;
  51 class NfcAdapterClient;
  52 class NfcDeviceClient;
  53 class NfcManagerClient;
  54 class NfcRecordClient;
  55 class NfcTagClient;
  56 class PeerDaemonManagerClient;
  57 class PermissionBrokerClient;
  58 class PowerManagerClient;
  59 class SessionManagerClient;
  60 class ShillDeviceClient;
  61 class ShillIPConfigClient;
  62 class ShillManagerClient;
  63 class ShillProfileClient;
  64 class ShillServiceClient;
  65 class ShillThirdPartyVpnDriverClient;
  66 class SMSClient;
  67 class SystemClockClient;
  68 class UpdateEngineClient;
  69
  70 // DBusThreadManager manages the D-Bus thread, the thread dedicated to
  71 // handling asynchronous D-Bus operations.
  72 //
  73 // This class also manages D-Bus connections and D-Bus clients, which
  74 // depend on the D-Bus thread to ensure the right order of shutdowns for
  75 // the D-Bus thread, the D-Bus connections, and the D-Bus clients.
  76 //
  77 // CALLBACKS IN D-BUS CLIENTS:
  78 //
  79 // D-Bus clients managed by DBusThreadManager are guaranteed to be deleted
  80 // after the D-Bus thread so the clients don't need to worry if new
  81 // incoming messages arrive from the D-Bus thread during shutdown of the
  82 // clients. The UI message loop is not running during the shutdown hence
  83 // the UI message loop won't post tasks to D-BUS clients during the
  84 // shutdown. However, to be extra cautious, clients should use
  85 // WeakPtrFactory when creating callbacks that run on UI thread. See
  86 // session_manager_client.cc for examples.
  87 //
  88 class CHROMEOS_EXPORT DBusThreadManager {
  89  public:
  90   // Sets the global instance. Must be called before any calls to Get().
  91   // We explicitly initialize and shut down the global object, rather than
  92   // making it a Singleton, to ensure clean startup and shutdown.
  93   // This will initialize real or stub DBusClients depending on command-line
  94   // arguments and whether this process runs in a ChromeOS environment.
  95   static void Initialize();
  96
  97   // Returns a DBusThreadManagerSetter instance that allows tests to
  98   // replace individual D-Bus clients with their own implementations.
  99   // Also initializes the main DBusThreadManager for testing if necessary.
 100   static scoped_ptr<DBusThreadManagerSetter> GetSetterForTesting();
 101
 102   // Returns true if DBusThreadManager has been initialized. Call this to
 103   // avoid initializing + shutting down DBusThreadManager more than once.
 104   static bool IsInitialized();
 105
 106   // Destroys the global instance.
 107   static void Shutdown();
 108
 109   // Gets the global instance. Initialize() must be called first.
 110   static DBusThreadManager* Get();
 111
 112   // Returns true if |client| is stubbed.
 113   bool IsUsingStub(DBusClientBundle::DBusClientType client);
 114
 115   // Returns various D-Bus bus instances, owned by DBusThreadManager.
 116   dbus::Bus* GetSystemBus();
 117
 118   // All returned objects are owned by DBusThreadManager.  Do not use these
 119   // pointers after DBusThreadManager has been shut down.
 120   BluetoothAdapterClient* GetBluetoothAdapterClient();
 121   BluetoothAgentManagerClient* GetBluetoothAgentManagerClient();
 122   BluetoothDeviceClient* GetBluetoothDeviceClient();
 123   BluetoothGattCharacteristicClient* GetBluetoothGattCharacteristicClient();
 124   BluetoothGattDescriptorClient* GetBluetoothGattDescriptorClient();
 125   BluetoothGattManagerClient* GetBluetoothGattManagerClient();
 126   BluetoothGattServiceClient* GetBluetoothGattServiceClient();
 127   BluetoothInputClient* GetBluetoothInputClient();
 128   BluetoothMediaClient* GetBluetoothMediaClient();
 129   BluetoothMediaTransportClient* GetBluetoothMediaTransportClient();
 130   BluetoothProfileManagerClient* GetBluetoothProfileManagerClient();
 131   CrasAudioClient* GetCrasAudioClient();
 132   CrosDisksClient* GetCrosDisksClient();
 133   CryptohomeClient* GetCryptohomeClient();
 134   DebugDaemonClient* GetDebugDaemonClient();
 135   EasyUnlockClient* GetEasyUnlockClient();
 136   GsmSMSClient* GetGsmSMSClient();
 137   ImageBurnerClient* GetImageBurnerClient();
 138   IntrospectableClient* GetIntrospectableClient();
 139   LeadershipDaemonManagerClient* GetLeadershipDaemonManagerClient();
 140   LorgnetteManagerClient* GetLorgnetteManagerClient();
 141   ModemMessagingClient* GetModemMessagingClient();
 142   NfcAdapterClient* GetNfcAdapterClient();
 143   NfcDeviceClient* GetNfcDeviceClient();
 144   NfcManagerClient* GetNfcManagerClient();
 145   NfcRecordClient* GetNfcRecordClient();
 146   NfcTagClient* GetNfcTagClient();
 147   PeerDaemonManagerClient* GetPeerDaemonManagerClient();
 148   PermissionBrokerClient* GetPermissionBrokerClient();
 149   PowerManagerClient* GetPowerManagerClient();
 150   SessionManagerClient* GetSessionManagerClient();
 151   ShillDeviceClient* GetShillDeviceClient();
 152   ShillIPConfigClient* GetShillIPConfigClient();
 153   ShillManagerClient* GetShillManagerClient();
 154   ShillServiceClient* GetShillServiceClient();
 155   ShillProfileClient* GetShillProfileClient();
 156   ShillThirdPartyVpnDriverClient* GetShillThirdPartyVpnDriverClient();
 157   SMSClient* GetSMSClient();
 158   SystemClockClient* GetSystemClockClient();
 159   UpdateEngineClient* GetUpdateEngineClient();
 160
 161  private:
 162   friend class DBusThreadManagerSetter;
 163
 164   // Creates a new DBusThreadManager using the DBusClients set in
 165   // |client_bundle|.
 166   explicit DBusThreadManager(scoped_ptr<DBusClientBundle> client_bundle);
 167   ~DBusThreadManager();
 168
 169   // Creates a global instance of DBusThreadManager with the real
 170   // implementations for all clients that are listed in |unstub_client_mask| and
 171   // stub implementations for all clients that are not included. Cannot be
 172   // called more than once.
 173   static void CreateGlobalInstance(
 174       DBusClientBundle::DBusClientTypeMask unstub_client_mask);
 175
 176   // Initialize global thread manager instance with all real dbus client
 177   // implementations.
 178   static void InitializeWithRealClients();
 179
 180   // Initialize global thread manager instance with stubbed-out dbus clients
 181   // implementation.
 182   static void InitializeWithStubs();
 183
 184   // Initialize with stub implementations for only certain clients that are
 185   // not included in the comma-separated |unstub_clients| list.
 186   static void InitializeWithPartialStub(const std::string& unstub_clients);
 187
 188   // Initializes all currently stored DBusClients with the system bus and
 189   // performs additional setup.
 190   void InitializeClients();
 191
 192   scoped_ptr<base::Thread> dbus_thread_;
 193   scoped_refptr<dbus::Bus> system_bus_;
 194   scoped_ptr<DBusClientBundle> client_bundle_;
 195
 196   DISALLOW_COPY_AND_ASSIGN(DBusThreadManager);
 197 };
 198
 199 class CHROMEOS_EXPORT DBusThreadManagerSetter {
 200  public:
 201   ~DBusThreadManagerSetter();
 202
 203   void SetBluetoothAdapterClient(scoped_ptr<BluetoothAdapterClient> client);
 204   void SetBluetoothAgentManagerClient(
 205       scoped_ptr<BluetoothAgentManagerClient> client);
 206   void SetBluetoothDeviceClient(scoped_ptr<BluetoothDeviceClient> client);
 207   void SetBluetoothGattCharacteristicClient(
 208       scoped_ptr<BluetoothGattCharacteristicClient> client);
 209   void SetBluetoothGattDescriptorClient(
 210       scoped_ptr<BluetoothGattDescriptorClient> client);
 211   void SetBluetoothGattManagerClient(
 212       scoped_ptr<BluetoothGattManagerClient> client);
 213   void SetBluetoothGattServiceClient(
 214       scoped_ptr<BluetoothGattServiceClient> client);
 215   void SetBluetoothInputClient(scoped_ptr<BluetoothInputClient> client);
 216   void SetBluetoothMediaClient(scoped_ptr<BluetoothMediaClient> client);
 217   void SetBluetoothMediaTransportClient(
 218       scoped_ptr<BluetoothMediaTransportClient> client);
 219   void SetBluetoothProfileManagerClient(
 220       scoped_ptr<BluetoothProfileManagerClient> client);
 221   void SetCrasAudioClient(scoped_ptr<CrasAudioClient> client);
 222   void SetCrosDisksClient(scoped_ptr<CrosDisksClient> client);
 223   void SetCryptohomeClient(scoped_ptr<CryptohomeClient> client);
 224   void SetDebugDaemonClient(scoped_ptr<DebugDaemonClient> client);
 225   void SetEasyUnlockClient(scoped_ptr<EasyUnlockClient> client);
 226   void SetLeadershipDaemonManagerClient(
 227       scoped_ptr<LeadershipDaemonManagerClient> client);
 228   void SetLorgnetteManagerClient(scoped_ptr<LorgnetteManagerClient> client);
 229   void SetShillDeviceClient(scoped_ptr<ShillDeviceClient> client);
 230   void SetShillIPConfigClient(scoped_ptr<ShillIPConfigClient> client);
 231   void SetShillManagerClient(scoped_ptr<ShillManagerClient> client);
 232   void SetShillServiceClient(scoped_ptr<ShillServiceClient> client);
 233   void SetShillProfileClient(scoped_ptr<ShillProfileClient> client);
 234   void SetGsmSMSClient(scoped_ptr<GsmSMSClient> client);
 235   void SetImageBurnerClient(scoped_ptr<ImageBurnerClient> client);
 236   void SetIntrospectableClient(scoped_ptr<IntrospectableClient> client);
 237   void SetModemMessagingClient(scoped_ptr<ModemMessagingClient> client);
 238   void SetNfcAdapterClient(scoped_ptr<NfcAdapterClient> client);
 239   void SetNfcDeviceClient(scoped_ptr<NfcDeviceClient> client);
 240   void SetNfcManagerClient(scoped_ptr<NfcManagerClient> client);
 241   void SetNfcRecordClient(scoped_ptr<NfcRecordClient> client);
 242   void SetNfcTagClient(scoped_ptr<NfcTagClient> client);
 243   void SetPeerDaemonManagerClient(scoped_ptr<PeerDaemonManagerClient> client);
 244   void SetPermissionBrokerClient(scoped_ptr<PermissionBrokerClient> client);
 245   void SetPowerManagerClient(scoped_ptr<PowerManagerClient> client);
 246   void SetSessionManagerClient(scoped_ptr<SessionManagerClient> client);
 247   void SetSMSClient(scoped_ptr<SMSClient> client);
 248   void SetSystemClockClient(scoped_ptr<SystemClockClient> client);
 249   void SetUpdateEngineClient(scoped_ptr<UpdateEngineClient> client);
 250
 251  private:
 252   friend class DBusThreadManager;
 253
 254   DBusThreadManagerSetter();
 255
 256   DISALLOW_COPY_AND_ASSIGN(DBusThreadManagerSetter);
 257 };
 258
 259 }  // namespace chromeos
 260
 261 #endif  // CHROMEOS_DBUS_DBUS_THREAD_MANAGER_H_