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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.
*/
#ifndef DEVICE_GOOGLE_CROSSHATCH_HEALTH_BATTERYMETRICSLOGGER_H
#define DEVICE_GOOGLE_CROSSHATCH_HEALTH_BATTERYMETRICSLOGGER_H
#include <android-base/file.h>
#include <android-base/logging.h>
#include <android-base/strings.h>
#include <batteryservice/BatteryService.h>
#include <math.h>
#include <time.h>
#include <utils/Timers.h>
#include <string>
#include <hardware/google/pixelstats/1.0/IPixelStats.h>
namespace device {
namespace google {
namespace crosshatch {
namespace health {
class BatteryMetricsLogger {
public:
BatteryMetricsLogger();
void logBatteryProperties(struct android::BatteryProperties *props);
private:
enum sampleType {
TIME, // time in seconds
RES, // resistance in milli-ohms
CURR, // current in mA
VOLT, // voltage in mV
TEMP, // temp in deci-degC
SOC, // SoC in % battery level
OCV, // open-circuit voltage in mV
NUM_FIELDS, // do not reference
};
const char *kBatteryResistance = "/sys/class/power_supply/maxfg/resistance";
const char *kBatteryOCV = "/sys/class/power_supply/maxfg/voltage_ocv";
const int kSamplePeriod = 10 * 60; // 10 minutes
const int kUploadPeriod = 24 * 60 * 60; // 1 day
const int kMaxSamples = 144; // 24h * 60min / 10 min sample rate
const sampleType kMetricMin = RES, kMetricMax = SOC;
// min and max are referenced by type in both the X and Y axes
// i.e. min[TYPE] is the event where the minimum of that type occurred, and
// min[TYPE][TYPE] is the reading of that type at that minimum event
int32_t min_[NUM_FIELDS][NUM_FIELDS];
int32_t max_[NUM_FIELDS][NUM_FIELDS];
int32_t num_res_samples_; // number of res samples since last upload
int32_t num_samples_; // number of min/max samples since last upload
int64_t accum_resistance_; // accumulative resistance
int64_t last_sample_; // time in seconds since boot of last sample
int64_t last_upload_; // time in seconds since boot of last upload
int64_t getTime();
bool recordSample(struct android::BatteryProperties *props);
bool uploadMetrics();
bool uploadOutlierMetric(android::sp<::hardware::google::pixelstats::V1_0::IPixelStats> client,
sampleType type);
};
} // namespace health
} // namespace crosshatch
} // namespace google
} // namespace device
#endif
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