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battery.go
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battery.go
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// SPDX-FileCopyrightText: 2018 - 2022 UnionTech Software Technology Co., Ltd.
//
// SPDX-License-Identifier: GPL-3.0-or-later
package power
import (
"path/filepath"
"strings"
"sync"
"time"
dbus "github.com/godbus/dbus/v5"
"github.com/linuxdeepin/dde-api/powersupply/battery"
gudev "github.com/linuxdeepin/go-gir/gudev-1.0"
"github.com/linuxdeepin/go-lib/dbusutil"
)
type Battery struct {
service *dbusutil.Service
exit chan struct{}
gudevClient *gudev.Client
PropsMu sync.RWMutex
SysfsPath string
IsPresent bool
Manufacturer string
ModelName string
SerialNumber string
Name string
Technology string
Energy float64
EnergyFull float64
EnergyFullDesign float64
EnergyRate float64
Voltage float64
Percentage float64
Capacity float64
Status battery.Status
TimeToEmpty uint64
TimeToFull uint64
UpdateTime int64
batteryHistory []float64
refreshDone func()
}
const (
checkTimeSliceCount = 2
checkTimeFloatRange = 120
)
func newBattery(manager *Manager, device *gudev.Device) *Battery {
sysfsPath := device.GetSysfsPath()
logger.Debugf("NewBattery sysfsPath: %q", sysfsPath)
if manager == nil || manager.gudevClient == nil ||
device == nil {
return nil
}
bat := &Battery{
service: manager.service,
gudevClient: manager.gudevClient,
SysfsPath: sysfsPath,
}
ok := bat.refresh(device)
if !ok {
return nil
}
bat.resetUpdateInterval(60 * time.Second)
return bat
}
const (
batteryDBusInterface = dbusInterface + ".Battery"
)
func (*Battery) GetInterfaceName() string {
return batteryDBusInterface
}
func (bat *Battery) getObjPath() dbus.ObjectPath {
return dbus.ObjectPath(dbusPath + "/battery_" + getValidName(filepath.Base(bat.SysfsPath)))
}
func getValidName(n string) string {
// dbus objpath 0-9 a-z A-Z _
n = strings.Replace(n, "-", "_x0", -1)
n = strings.Replace(n, ".", "_x1", -1)
n = strings.Replace(n, ":", "_x2", -1)
return n
}
func checkTimeStabilized(s []uint64, t uint64) bool {
if len(s) <= checkTimeSliceCount {
// 记录少于 3
return false
}
// 循环最后三次记录
length := len(s)
for i := 1; i <= checkTimeSliceCount; i++ {
if t+checkTimeFloatRange <= s[length-i] {
// 所处记录大于 t+允许浮动值
return false
}
if t-checkTimeFloatRange >= s[length-i] {
// 所处记录小于 t-允许浮动值
return false
}
}
return true
}
func (bat *Battery) setRefreshDoneCallback(fn func()) {
bat.refreshDone = fn
}
func (bat *Battery) newDevice() *gudev.Device {
return bat.gudevClient.QueryBySysfsPath(bat.SysfsPath)
}
func (bat *Battery) refresh(dev *gudev.Device) (ok bool) {
endDelay := bat.service.DelayEmitPropertyChanged(bat)
batInfo := battery.GetBatteryInfo(dev)
if batInfo == nil {
if endDelay != nil {
err := endDelay()
if err != nil {
logger.Warning(err)
}
}
return
}
setTimeToFull := true
if batInfo.Status == battery.StatusCharging {
/*
* bug: https://pms.uniontech.com/zentao/bug-view-15187.html
* \desc Because the time to full provide by Upower module is not stable
* when just started charging. There are now two way solve that:
* 1. take the average value of the times, but the frequency of refresh battry is 60 seconds.
* If add more time tickers may introducing new bugs because the refresh() method can used by
* other method. Just like: https://pms.uniontech.com/zentao/bug-view-37382.html
* 2. just show time to full on the next refresh, it will be 60s after charging.
* \warn Add frequency of refresh battry will take a lot of overhead in cpu
* refresh battry every 1s take 5% cpu performence on arm laptop
*/
if bat.Status == battery.StatusDischarging {
logger.Debug("Just started charging")
setTimeToFull = false
}
}
bat._refresh(batInfo, setTimeToFull)
if endDelay != nil {
err := endDelay()
if err != nil {
logger.Warning(err)
}
}
ok = true
return
}
func (bat *Battery) _refresh(info *battery.BatteryInfo, setTimeToFull bool) {
logger.Debug("Refresh", bat.Name)
isPresent := true
var updateTime int64
if info == nil {
isPresent = false
info = &battery.BatteryInfo{}
} else {
now := time.Now()
updateTime = now.Unix()
logger.Debugf("now %v updateTime %v", now, updateTime)
}
logger.Debug("Name", info.Name)
logger.Debug("Technology", info.Technology)
logger.Debug("Manufacturer", info.Manufacturer)
logger.Debug("ModelName", info.ModelName)
logger.Debug("SerialNumber", info.SerialNumber)
logger.Debugf("energy %v", info.Energy)
logger.Debugf("energyFull %v", info.EnergyFull)
logger.Debugf("EnergyFullDesign %v", info.EnergyFullDesign)
logger.Debugf("EnergyRate %v", info.EnergyRate)
logger.Debugf("voltage %v", info.Voltage)
logger.Debugf("percentage %.4f%%", info.Percentage)
logger.Debugf("capacity %.4f%%", info.Capacity)
logger.Debug("status", info.Status)
logger.Debugf("timeToEmpty %v (%vs), timeToFull %v (%vs)",
time.Duration(info.TimeToEmpty)*time.Second,
info.TimeToEmpty,
time.Duration(info.TimeToFull)*time.Second,
info.TimeToFull)
/* lie to full */
bat.appendToHistory(info.Percentage)
if info.Percentage > 97.0 && bat.getHistoryLength() >= 10 && bat.calcHistoryVariance() < 0.3 {
logger.Debugf("fake 100 : true percentage %.4f%% variance %.4f%%", info.Percentage, bat.calcHistoryVariance())
info.Percentage = 100.0
info.TimeToFull = 0
}
bat.PropsMu.Lock()
bat.setPropIsPresent(isPresent)
bat.setPropUpdateTime(updateTime)
bat.setPropName(info.Name)
bat.setPropTechnology(info.Technology)
bat.setPropManufacturer(info.Manufacturer)
bat.setPropModelName(info.ModelName)
bat.setPropSerialNumber(info.SerialNumber)
bat.setPropEnergy(info.Energy)
bat.setPropEnergyFull(info.EnergyFull)
bat.setPropEnergyFullDesign(info.EnergyFullDesign)
bat.setPropEnergyRate(info.EnergyRate)
bat.setPropVoltage(info.Voltage)
bat.setPropPercentage(info.Percentage)
bat.setPropCapacity(info.Capacity)
bat.setPropStatus(info.Status)
bat.setPropTimeToEmpty(info.TimeToEmpty)
if setTimeToFull {
bat.setPropTimeToFull(info.TimeToFull)
} else {
bat.setPropTimeToFull(0)
}
bat.PropsMu.Unlock()
logger.Debugf("Refresh %v done", bat.Name)
if bat.refreshDone != nil {
bat.refreshDone()
}
}
func (bat *Battery) Refresh() {
dev := bat.newDevice()
if dev != nil {
bat.refresh(dev)
dev.Unref()
} else {
logger.Warningf("Refresh %v failed", bat.Name)
}
}
func (bat *Battery) startLoopUpdate(d time.Duration) chan struct{} {
done := make(chan struct{}, 1)
go func() {
ticker := time.NewTicker(d)
defer ticker.Stop()
for {
select {
case _, ok := <-ticker.C:
if !ok {
logger.Error("Invalid ticker event")
return
}
bat.Refresh()
case <-done:
return
}
}
}()
return done
}
func (bat *Battery) resetUpdateInterval(d time.Duration) {
if bat.exit != nil {
close(bat.exit)
}
bat.exit = bat.startLoopUpdate(d)
}
func (bat *Battery) destroy() {
if bat.exit != nil {
close(bat.exit)
bat.exit = nil
}
}