| // Copyright 2019 The Chromium OS Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #include "diagnostics/telem/battery_utils.h" |
| |
| #include <memory> |
| |
| #include <base/strings/string_number_conversions.h> |
| #include <chromeos/dbus/service_constants.h> |
| #include <dbus/bus.h> |
| #include <dbus/message.h> |
| #include <dbus/object_proxy.h> |
| |
| #include "diagnostics/telem/telem_cache.h" |
| #include "diagnostics/telem/telemetry.h" |
| #include "power_manager/proto_bindings/power_supply_properties.pb.h" |
| |
| namespace diagnostics { |
| |
| namespace { |
| |
| constexpr base::TimeDelta kPowerManagerDBusTimeout = |
| base::TimeDelta::FromSeconds(3); |
| |
| } // namespace |
| |
| void ExtractBatteryMetrics(dbus::Response* response, |
| base::Optional<base::Value>* battery_cycle_count, |
| base::Optional<base::Value>* battery_vendor, |
| base::Optional<base::Value>* battery_voltage) { |
| if (response == nullptr) { |
| return; |
| } |
| power_manager::PowerSupplyProperties power_supply_proto; |
| dbus::MessageReader reader_response(response); |
| if (reader_response.PopArrayOfBytesAsProto(&power_supply_proto)) { |
| if (power_supply_proto.has_battery_cycle_count()) { |
| *battery_cycle_count = base::Optional<base::Value>(base::Value( |
| base::IntToString(power_supply_proto.battery_cycle_count()))); |
| } |
| if (power_supply_proto.has_battery_vendor()) { |
| *battery_vendor = base::Optional<base::Value>( |
| base::Value(power_supply_proto.battery_vendor())); |
| } |
| if (power_supply_proto.has_battery_voltage()) { |
| *battery_voltage = base::Optional<base::Value>( |
| base::Value(power_supply_proto.battery_voltage())); |
| } |
| } else { |
| LOG(ERROR) << "Could not successfully read power supply protobuf"; |
| } |
| } |
| |
| void FetchBatteryMetrics(CacheWriter* cache) { |
| dbus::Bus::Options options; |
| scoped_refptr<dbus::Bus> bus(new dbus::Bus(options)); |
| base::Optional<base::Value> battery_cycle_count = {}; |
| base::Optional<base::Value> battery_vendor = {}; |
| base::Optional<base::Value> battery_voltage = {}; |
| if (!bus->Connect()) { |
| LOG(ERROR) << "Failed to connect to system bus"; |
| } else { |
| dbus::ObjectProxy* bus_proxy = bus->GetObjectProxy( |
| power_manager::kPowerManagerServiceName, |
| dbus::ObjectPath(power_manager::kPowerManagerServicePath)); |
| dbus::MethodCall method_call( |
| power_manager::kPowerManagerInterface, |
| power_manager::kGetPowerSupplyPropertiesMethod); |
| auto response = bus_proxy->CallMethodAndBlock( |
| &method_call, kPowerManagerDBusTimeout.InMilliseconds()); |
| ExtractBatteryMetrics(response.get(), &battery_cycle_count, &battery_vendor, |
| &battery_voltage); |
| cache->SetParsedData(TelemetryItemEnum::kBatteryCycleCount, |
| battery_cycle_count); |
| cache->SetParsedData(TelemetryItemEnum::kBatteryManufacturer, |
| battery_vendor); |
| cache->SetParsedData(TelemetryItemEnum::kBatteryVoltage, battery_voltage); |
| } |
| } |
| |
| } // namespace diagnostics |