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| 1 // Copyright 2014 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 #include "chromeos/dbus/bluetooth_gatt_descriptor_client.h" | |
| 6 | |
| 7 #include "base/bind.h" | |
| 8 #include "base/memory/weak_ptr.h" | |
| 9 #include "base/observer_list.h" | |
| 10 #include "dbus/bus.h" | |
| 11 #include "dbus/object_manager.h" | |
| 12 #include "third_party/cros_system_api/dbus/service_constants.h" | |
| 13 | |
| 14 namespace chromeos { | |
| 15 | |
| 16 namespace { | |
| 17 | |
| 18 // TODO(armansito): Move this constant to cros_system_api. | |
| 19 const char kValueProperty[] = "Value"; | |
| 20 | |
| 21 } // namespace | |
| 22 | |
| 23 // static | |
| 24 const char BluetoothGattDescriptorClient::kNoResponseError[] = | |
| 25 "org.chromium.Error.NoResponse"; | |
| 26 // static | |
| 27 const char BluetoothGattDescriptorClient::kUnknownDescriptorError[] = | |
| 28 "org.chromium.Error.UnknownDescriptor"; | |
| 29 | |
| 30 BluetoothGattDescriptorClient::Properties::Properties( | |
| 31 dbus::ObjectProxy* object_proxy, | |
| 32 const std::string& interface_name, | |
| 33 const PropertyChangedCallback&callback) | |
| 34 : dbus::PropertySet(object_proxy, interface_name, callback) { | |
| 35 RegisterProperty(bluetooth_gatt_descriptor::kUUIDProperty, &uuid); | |
| 36 RegisterProperty(bluetooth_gatt_descriptor::kCharacteristicProperty, | |
| 37 &characteristic); | |
| 38 RegisterProperty(kValueProperty, &value); | |
| 39 } | |
| 40 | |
| 41 BluetoothGattDescriptorClient::Properties::~Properties() { | |
| 42 } | |
| 43 | |
| 44 // The BluetoothGattDescriptorClient implementation used in production. | |
| 45 class BluetoothGattDescriptorClientImpl | |
| 46 : public BluetoothGattDescriptorClient, | |
| 47 public dbus::ObjectManager::Interface { | |
| 48 public: | |
| 49 BluetoothGattDescriptorClientImpl() | |
| 50 : object_manager_(NULL), | |
| 51 weak_ptr_factory_(this) { | |
| 52 } | |
| 53 | |
| 54 ~BluetoothGattDescriptorClientImpl() override { | |
| 55 object_manager_->UnregisterInterface( | |
| 56 bluetooth_gatt_descriptor::kBluetoothGattDescriptorInterface); | |
| 57 } | |
| 58 | |
| 59 // BluetoothGattDescriptorClientImpl override. | |
| 60 void AddObserver(BluetoothGattDescriptorClient::Observer* observer) override { | |
| 61 DCHECK(observer); | |
| 62 observers_.AddObserver(observer); | |
| 63 } | |
| 64 | |
| 65 // BluetoothGattDescriptorClientImpl override. | |
| 66 void RemoveObserver( | |
| 67 BluetoothGattDescriptorClient::Observer* observer) override { | |
| 68 DCHECK(observer); | |
| 69 observers_.RemoveObserver(observer); | |
| 70 } | |
| 71 | |
| 72 // BluetoothGattDescriptorClientImpl override. | |
| 73 std::vector<dbus::ObjectPath> GetDescriptors() override { | |
| 74 DCHECK(object_manager_); | |
| 75 return object_manager_->GetObjectsWithInterface( | |
| 76 bluetooth_gatt_descriptor::kBluetoothGattDescriptorInterface); | |
| 77 } | |
| 78 | |
| 79 // BluetoothGattDescriptorClientImpl override. | |
| 80 Properties* GetProperties(const dbus::ObjectPath& object_path) override { | |
| 81 DCHECK(object_manager_); | |
| 82 return static_cast<Properties*>( | |
| 83 object_manager_->GetProperties( | |
| 84 object_path, | |
| 85 bluetooth_gatt_descriptor::kBluetoothGattDescriptorInterface)); | |
| 86 } | |
| 87 | |
| 88 // BluetoothGattDescriptorClientImpl override. | |
| 89 void ReadValue(const dbus::ObjectPath& object_path, | |
| 90 const ValueCallback& callback, | |
| 91 const ErrorCallback& error_callback) override { | |
| 92 dbus::ObjectProxy* object_proxy = | |
| 93 object_manager_->GetObjectProxy(object_path); | |
| 94 if (!object_proxy) { | |
| 95 error_callback.Run(kUnknownDescriptorError, ""); | |
| 96 return; | |
| 97 } | |
| 98 | |
| 99 dbus::MethodCall method_call( | |
| 100 bluetooth_gatt_descriptor::kBluetoothGattDescriptorInterface, | |
| 101 bluetooth_gatt_descriptor::kReadValue); | |
| 102 | |
| 103 object_proxy->CallMethodWithErrorCallback( | |
| 104 &method_call, | |
| 105 dbus::ObjectProxy::TIMEOUT_USE_DEFAULT, | |
| 106 base::Bind(&BluetoothGattDescriptorClientImpl::OnValueSuccess, | |
| 107 weak_ptr_factory_.GetWeakPtr(), | |
| 108 callback), | |
| 109 base::Bind(&BluetoothGattDescriptorClientImpl::OnError, | |
| 110 weak_ptr_factory_.GetWeakPtr(), | |
| 111 error_callback)); | |
| 112 } | |
| 113 | |
| 114 // BluetoothGattDescriptorClientImpl override. | |
| 115 void WriteValue(const dbus::ObjectPath& object_path, | |
| 116 const std::vector<uint8>& value, | |
| 117 const base::Closure& callback, | |
| 118 const ErrorCallback& error_callback) override { | |
| 119 dbus::ObjectProxy* object_proxy = | |
| 120 object_manager_->GetObjectProxy(object_path); | |
| 121 if (!object_proxy) { | |
| 122 error_callback.Run(kUnknownDescriptorError, ""); | |
| 123 return; | |
| 124 } | |
| 125 | |
| 126 dbus::MethodCall method_call( | |
| 127 bluetooth_gatt_descriptor::kBluetoothGattDescriptorInterface, | |
| 128 bluetooth_gatt_descriptor::kWriteValue); | |
| 129 dbus::MessageWriter writer(&method_call); | |
| 130 writer.AppendArrayOfBytes(value.data(), value.size()); | |
| 131 | |
| 132 object_proxy->CallMethodWithErrorCallback( | |
| 133 &method_call, | |
| 134 dbus::ObjectProxy::TIMEOUT_USE_DEFAULT, | |
| 135 base::Bind(&BluetoothGattDescriptorClientImpl::OnSuccess, | |
| 136 weak_ptr_factory_.GetWeakPtr(), | |
| 137 callback), | |
| 138 base::Bind(&BluetoothGattDescriptorClientImpl::OnError, | |
| 139 weak_ptr_factory_.GetWeakPtr(), | |
| 140 error_callback)); | |
| 141 } | |
| 142 | |
| 143 // dbus::ObjectManager::Interface override. | |
| 144 dbus::PropertySet* CreateProperties( | |
| 145 dbus::ObjectProxy* object_proxy, | |
| 146 const dbus::ObjectPath& object_path, | |
| 147 const std::string& interface_name) override { | |
| 148 Properties* properties = new Properties( | |
| 149 object_proxy, | |
| 150 interface_name, | |
| 151 base::Bind(&BluetoothGattDescriptorClientImpl::OnPropertyChanged, | |
| 152 weak_ptr_factory_.GetWeakPtr(), | |
| 153 object_path)); | |
| 154 return static_cast<dbus::PropertySet*>(properties); | |
| 155 } | |
| 156 | |
| 157 // dbus::ObjectManager::Interface override. | |
| 158 void ObjectAdded(const dbus::ObjectPath& object_path, | |
| 159 const std::string& interface_name) override { | |
| 160 VLOG(2) << "Remote GATT descriptor added: " << object_path.value(); | |
| 161 FOR_EACH_OBSERVER(BluetoothGattDescriptorClient::Observer, observers_, | |
| 162 GattDescriptorAdded(object_path)); | |
| 163 } | |
| 164 | |
| 165 // dbus::ObjectManager::Interface override. | |
| 166 void ObjectRemoved(const dbus::ObjectPath& object_path, | |
| 167 const std::string& interface_name) override { | |
| 168 VLOG(2) << "Remote GATT descriptor removed: " << object_path.value(); | |
| 169 FOR_EACH_OBSERVER(BluetoothGattDescriptorClient::Observer, observers_, | |
| 170 GattDescriptorRemoved(object_path)); | |
| 171 } | |
| 172 | |
| 173 protected: | |
| 174 // chromeos::DBusClient override. | |
| 175 void Init(dbus::Bus* bus) override { | |
| 176 object_manager_ = bus->GetObjectManager( | |
| 177 bluetooth_object_manager::kBluetoothObjectManagerServiceName, | |
| 178 dbus::ObjectPath( | |
| 179 bluetooth_object_manager::kBluetoothObjectManagerServicePath)); | |
| 180 object_manager_->RegisterInterface( | |
| 181 bluetooth_gatt_descriptor::kBluetoothGattDescriptorInterface, | |
| 182 this); | |
| 183 } | |
| 184 | |
| 185 private: | |
| 186 // Called by dbus::PropertySet when a property value is changed, either by | |
| 187 // result of a signal or response to a GetAll() or Get() call. Informs | |
| 188 // observers. | |
| 189 virtual void OnPropertyChanged(const dbus::ObjectPath& object_path, | |
| 190 const std::string& property_name) { | |
| 191 VLOG(2) << "Remote GATT descriptor property changed: " | |
| 192 << object_path.value() << ": " << property_name; | |
| 193 FOR_EACH_OBSERVER(BluetoothGattDescriptorClient::Observer, observers_, | |
| 194 GattDescriptorPropertyChanged(object_path, | |
| 195 property_name)); | |
| 196 } | |
| 197 | |
| 198 // Called when a response for a successful method call is received. | |
| 199 void OnSuccess(const base::Closure& callback, dbus::Response* response) { | |
| 200 DCHECK(response); | |
| 201 callback.Run(); | |
| 202 } | |
| 203 | |
| 204 // Called when a descriptor value response for a successful method call is | |
| 205 // received. | |
| 206 void OnValueSuccess(const ValueCallback& callback, dbus::Response* response) { | |
| 207 DCHECK(response); | |
| 208 dbus::MessageReader reader(response); | |
| 209 | |
| 210 const uint8* bytes = NULL; | |
| 211 size_t length = 0; | |
| 212 | |
| 213 if (!reader.PopArrayOfBytes(&bytes, &length)) | |
| 214 VLOG(2) << "Error reading array of bytes in ValueCallback"; | |
| 215 | |
| 216 std::vector<uint8> value; | |
| 217 | |
| 218 if (bytes) | |
| 219 value.assign(bytes, bytes + length); | |
| 220 | |
| 221 callback.Run(value); | |
| 222 } | |
| 223 | |
| 224 // Called when a response for a failed method call is received. | |
| 225 void OnError(const ErrorCallback& error_callback, | |
| 226 dbus::ErrorResponse* response) { | |
| 227 // Error response has optional error message argument. | |
| 228 std::string error_name; | |
| 229 std::string error_message; | |
| 230 if (response) { | |
| 231 dbus::MessageReader reader(response); | |
| 232 error_name = response->GetErrorName(); | |
| 233 reader.PopString(&error_message); | |
| 234 } else { | |
| 235 error_name = kNoResponseError; | |
| 236 error_message = ""; | |
| 237 } | |
| 238 error_callback.Run(error_name, error_message); | |
| 239 } | |
| 240 | |
| 241 dbus::ObjectManager* object_manager_; | |
| 242 | |
| 243 // List of observers interested in event notifications from us. | |
| 244 base::ObserverList<BluetoothGattDescriptorClient::Observer> observers_; | |
| 245 | |
| 246 // Weak pointer factory for generating 'this' pointers that might live longer | |
| 247 // than we do. | |
| 248 // Note: This should remain the last member so it'll be destroyed and | |
| 249 // invalidate its weak pointers before any other members are destroyed. | |
| 250 base::WeakPtrFactory<BluetoothGattDescriptorClientImpl> weak_ptr_factory_; | |
| 251 | |
| 252 DISALLOW_COPY_AND_ASSIGN(BluetoothGattDescriptorClientImpl); | |
| 253 }; | |
| 254 | |
| 255 BluetoothGattDescriptorClient::BluetoothGattDescriptorClient() { | |
| 256 } | |
| 257 | |
| 258 BluetoothGattDescriptorClient::~BluetoothGattDescriptorClient() { | |
| 259 } | |
| 260 | |
| 261 // static | |
| 262 BluetoothGattDescriptorClient* BluetoothGattDescriptorClient::Create() { | |
| 263 return new BluetoothGattDescriptorClientImpl(); | |
| 264 } | |
| 265 | |
| 266 } // namespace chromeos | |
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Chromium Code Reviews
Issue 1347193004:
Refactor DBusThreadManager to split away BT clients. (Closed)
Base URL: https://chromium.googlesource.com/chromium/src.git@master