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/*
* Copyright (C) 2018 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include <pixelhealth/HealthHelper.h>
#include <pixelhealth/LowBatteryShutdownMetrics.h>
#include <pixelhealth/StatsHelper.h>
namespace hardware {
namespace google {
namespace pixel {
namespace health {
using aidl::android::hardware::health::BatteryStatus;
using aidl::android::hardware::health::HealthInfo;
using android::base::GetProperty;
using android::base::ReadFileToString;
using android::base::SetProperty;
LowBatteryShutdownMetrics::LowBatteryShutdownMetrics(const char *const voltage_avg,
const char *const persist_prop)
: kVoltageAvg(voltage_avg), kPersistProp(persist_prop) {
prop_written_ = false;
prop_empty_ = false;
}
bool LowBatteryShutdownMetrics::uploadVoltageAvg(void) {
std::string prop_contents = GetProperty(kPersistProp, "");
LOG(INFO) << kPersistProp << " property contents: " << prop_contents;
if (prop_contents.size() == 0) { // we don't have anything to upload
prop_empty_ = true;
return false;
}
std::shared_ptr<IStats> stats_client = getStatsService();
if (!stats_client) {
LOG(ERROR) << "Unable to connect to IStats service";
return false;
}
// Process and upload comma-delimited last voltage values
VendorBatteryCausedShutdown shutdown;
int32_t voltage_avg;
for (const auto &item : android::base::Split(prop_contents, ",")) {
if (!(voltage_avg = stoi(item))) {
LOG(ERROR) << "Couldn't process voltage value " << item;
continue;
}
LOG(INFO) << "Uploading voltage_avg: " << std::to_string(voltage_avg);
shutdown.set_last_recorded_micro_volt(voltage_avg);
reportBatteryCausedShutdown(stats_client, shutdown);
}
// Clear property now that we've uploaded its contents
SetProperty(kPersistProp, "");
return true;
}
bool LowBatteryShutdownMetrics::saveVoltageAvg(void) {
std::string voltage_avg;
std::string prop_contents;
if (!ReadFileToString(kVoltageAvg, &voltage_avg)) {
LOG(ERROR) << "Can't read the Maxim fuel gauge average voltage value";
return false;
}
voltage_avg = ::android::base::Trim(voltage_avg);
prop_contents = GetProperty(kPersistProp, "");
// Comma delimit additional values
if (prop_contents.size() > 0)
prop_contents += ",";
prop_contents += voltage_avg;
LOG(INFO) << "Saving \"" << prop_contents << "\" to " << kPersistProp;
return SetProperty(kPersistProp, prop_contents);
}
void LowBatteryShutdownMetrics::logShutdownVoltage(const HealthInfo &health_info) {
// If we're about to shut down due to low battery, save voltage_avg
if (!prop_written_ && health_info.batteryLevel == 0 &&
health_info.batteryStatus == BatteryStatus::DISCHARGING) {
prop_written_ = saveVoltageAvg();
} else if (!prop_empty_) { // We have data to upload
uploadVoltageAvg();
}
return;
}
void LowBatteryShutdownMetrics::logShutdownVoltage(struct android::BatteryProperties *props) {
logShutdownVoltage(ToHealthInfo(props));
}
} // namespace health
} // namespace pixel
} // namespace google
} // namespace hardware
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