device/bluetooth/bluetooth_remote_gatt_descriptor_chromeos.cc

   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 "device/bluetooth/bluetooth_remote_gatt_descriptor_chromeos.h"
   6
   7 #include "base/bind.h"
   8 #include "base/logging.h"
   9 #include "base/strings/stringprintf.h"
  10 #include "chromeos/dbus/bluetooth_gatt_descriptor_client.h"
  11 #include "chromeos/dbus/dbus_thread_manager.h"
  12 #include "device/bluetooth/bluetooth_remote_gatt_characteristic_chromeos.h"
  13 #include "device/bluetooth/bluetooth_remote_gatt_service_chromeos.h"
  14
  15 namespace chromeos {
  16
  17 namespace {
  18
  19 // Stream operator for logging vector<uint8>.
  20 std::ostream& operator<<(std::ostream& out, const std::vector<uint8> bytes) {
  21   out << "[";
  22   for (std::vector<uint8>::const_iterator iter = bytes.begin();
  23        iter != bytes.end(); ++iter) {
  24     out << base::StringPrintf("%02X", *iter);
  25   }
  26   return out << "]";
  27 }
  28
  29 }  // namespace
  30
  31 BluetoothRemoteGattDescriptorChromeOS::BluetoothRemoteGattDescriptorChromeOS(
  32     BluetoothRemoteGattCharacteristicChromeOS* characteristic,
  33     const dbus::ObjectPath& object_path)
  34     : object_path_(object_path),
  35       characteristic_(characteristic),
  36       weak_ptr_factory_(this) {
  37   VLOG(1) << "Creating remote GATT descriptor with identifier: "
  38           << GetIdentifier() << ", UUID: " << GetUUID().canonical_value();
  39 }
  40
  41 BluetoothRemoteGattDescriptorChromeOS::
  42     ~BluetoothRemoteGattDescriptorChromeOS() {
  43 }
  44
  45 std::string BluetoothRemoteGattDescriptorChromeOS::GetIdentifier() const {
  46   return object_path_.value();
  47 }
  48
  49 device::BluetoothUUID BluetoothRemoteGattDescriptorChromeOS::GetUUID() const {
  50   BluetoothGattDescriptorClient::Properties* properties =
  51       DBusThreadManager::Get()->GetBluetoothGattDescriptorClient()->
  52           GetProperties(object_path_);
  53   DCHECK(properties);
  54   return device::BluetoothUUID(properties->uuid.value());
  55 }
  56
  57 bool BluetoothRemoteGattDescriptorChromeOS::IsLocal() const {
  58   return false;
  59 }
  60
  61 const std::vector<uint8>&
  62 BluetoothRemoteGattDescriptorChromeOS::GetValue() const {
  63   return cached_value_;
  64 }
  65
  66 device::BluetoothGattCharacteristic*
  67 BluetoothRemoteGattDescriptorChromeOS::GetCharacteristic() const {
  68   return characteristic_;
  69 }
  70
  71 device::BluetoothGattCharacteristic::Permissions
  72 BluetoothRemoteGattDescriptorChromeOS::GetPermissions() const {
  73   // TODO(armansito): Once BlueZ defines the permissions, return the correct
  74   // values here.
  75   return device::BluetoothGattCharacteristic::kPermissionNone;
  76 }
  77
  78 void BluetoothRemoteGattDescriptorChromeOS::ReadRemoteDescriptor(
  79     const ValueCallback& callback,
  80     const ErrorCallback& error_callback) {
  81   VLOG(1) << "Sending GATT characteristic descriptor read request to "
  82           << "descriptor: " << GetIdentifier() << ", UUID: "
  83           << GetUUID().canonical_value();
  84
  85   DBusThreadManager::Get()->GetBluetoothGattDescriptorClient()->ReadValue(
  86       object_path_,
  87       base::Bind(&BluetoothRemoteGattDescriptorChromeOS::OnValueSuccess,
  88                  weak_ptr_factory_.GetWeakPtr(),
  89                  callback),
  90       base::Bind(&BluetoothRemoteGattDescriptorChromeOS::OnError,
  91                  weak_ptr_factory_.GetWeakPtr(),
  92                  error_callback));
  93 }
  94
  95 void BluetoothRemoteGattDescriptorChromeOS::WriteRemoteDescriptor(
  96     const std::vector<uint8>& new_value,
  97     const base::Closure& callback,
  98     const ErrorCallback& error_callback) {
  99   VLOG(1) << "Sending GATT characteristic descriptor write request to "
 100           << "characteristic: " << GetIdentifier() << ", UUID: "
 101           << GetUUID().canonical_value() << ", with value: "
 102           << new_value << ".";
 103
 104   DBusThreadManager::Get()->GetBluetoothGattDescriptorClient()->WriteValue(
 105       object_path_,
 106       new_value,
 107       callback,
 108       base::Bind(&BluetoothRemoteGattDescriptorChromeOS::OnError,
 109                  weak_ptr_factory_.GetWeakPtr(),
 110                  error_callback));
 111 }
 112
 113 void BluetoothRemoteGattDescriptorChromeOS::OnValueSuccess(
 114     const ValueCallback& callback,
 115     const std::vector<uint8>& value) {
 116   VLOG(1) << "Descriptor value read: " << value;
 117   cached_value_ = value;
 118
 119   DCHECK(characteristic_);
 120   BluetoothRemoteGattServiceChromeOS* service =
 121       static_cast<BluetoothRemoteGattServiceChromeOS*>(
 122           characteristic_->GetService());
 123   DCHECK(service);
 124   service->NotifyDescriptorValueChanged(characteristic_, this, value);
 125   callback.Run(value);
 126 }
 127
 128 void BluetoothRemoteGattDescriptorChromeOS::OnError(
 129     const ErrorCallback& error_callback,
 130     const std::string& error_name,
 131     const std::string& error_message) {
 132   VLOG(1) << "Operation failed: " << error_name
 133           << ", message: " << error_message;
 134   error_callback.Run();
 135 }
 136
 137 }  // namespace chromeos