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// Copyright 2018 The Prometheus Authors
// 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.
//go:build linux
// +build linux
package sysfs
import (
"errors"
"fmt"
"os"
"path/filepath"
"github.com/prometheus/procfs/internal/util"
)
// PowerSupply contains info from files in /sys/class/power_supply for a
// single power supply.
type PowerSupply struct {
Name string // Power Supply Name
Authentic *int64 // /sys/class/power_supply/<Name>/authentic
Calibrate *int64 // /sys/class/power_supply/<Name>/calibrate
Capacity *int64 // /sys/class/power_supply/<Name>/capacity
CapacityAlertMax *int64 // /sys/class/power_supply/<Name>/capacity_alert_max
CapacityAlertMin *int64 // /sys/class/power_supply/<Name>/capacity_alert_min
CapacityLevel string // /sys/class/power_supply/<Name>/capacity_level
ChargeAvg *int64 // /sys/class/power_supply/<Name>/charge_avg
ChargeControlLimit *int64 // /sys/class/power_supply/<Name>/charge_control_limit
ChargeControlLimitMax *int64 // /sys/class/power_supply/<Name>/charge_control_limit_max
ChargeCounter *int64 // /sys/class/power_supply/<Name>/charge_counter
ChargeEmpty *int64 // /sys/class/power_supply/<Name>/charge_empty
ChargeEmptyDesign *int64 // /sys/class/power_supply/<Name>/charge_empty_design
ChargeFull *int64 // /sys/class/power_supply/<Name>/charge_full
ChargeFullDesign *int64 // /sys/class/power_supply/<Name>/charge_full_design
ChargeNow *int64 // /sys/class/power_supply/<Name>/charge_now
ChargeTermCurrent *int64 // /sys/class/power_supply/<Name>/charge_term_current
ChargeType string // /sys/class/power_supply/<Name>/charge_type
ConstantChargeCurrent *int64 // /sys/class/power_supply/<Name>/constant_charge_current
ConstantChargeCurrentMax *int64 // /sys/class/power_supply/<Name>/constant_charge_current_max
ConstantChargeVoltage *int64 // /sys/class/power_supply/<Name>/constant_charge_voltage
ConstantChargeVoltageMax *int64 // /sys/class/power_supply/<Name>/constant_charge_voltage_max
CurrentAvg *int64 // /sys/class/power_supply/<Name>/current_avg
CurrentBoot *int64 // /sys/class/power_supply/<Name>/current_boot
CurrentMax *int64 // /sys/class/power_supply/<Name>/current_max
CurrentNow *int64 // /sys/class/power_supply/<Name>/current_now
CycleCount *int64 // /sys/class/power_supply/<Name>/cycle_count
EnergyAvg *int64 // /sys/class/power_supply/<Name>/energy_avg
EnergyEmpty *int64 // /sys/class/power_supply/<Name>/energy_empty
EnergyEmptyDesign *int64 // /sys/class/power_supply/<Name>/energy_empty_design
EnergyFull *int64 // /sys/class/power_supply/<Name>/energy_full
EnergyFullDesign *int64 // /sys/class/power_supply/<Name>/energy_full_design
EnergyNow *int64 // /sys/class/power_supply/<Name>/energy_now
Health string // /sys/class/power_supply/<Name>/health
InputCurrentLimit *int64 // /sys/class/power_supply/<Name>/input_current_limit
Manufacturer string // /sys/class/power_supply/<Name>/manufacturer
ModelName string // /sys/class/power_supply/<Name>/model_name
Online *int64 // /sys/class/power_supply/<Name>/online
PowerAvg *int64 // /sys/class/power_supply/<Name>/power_avg
PowerNow *int64 // /sys/class/power_supply/<Name>/power_now
PrechargeCurrent *int64 // /sys/class/power_supply/<Name>/precharge_current
Present *int64 // /sys/class/power_supply/<Name>/present
Scope string // /sys/class/power_supply/<Name>/scope
SerialNumber string // /sys/class/power_supply/<Name>/serial_number
Status string // /sys/class/power_supply/<Name>/status
Technology string // /sys/class/power_supply/<Name>/technology
Temp *int64 // /sys/class/power_supply/<Name>/temp
TempAlertMax *int64 // /sys/class/power_supply/<Name>/temp_alert_max
TempAlertMin *int64 // /sys/class/power_supply/<Name>/temp_alert_min
TempAmbient *int64 // /sys/class/power_supply/<Name>/temp_ambient
TempAmbientMax *int64 // /sys/class/power_supply/<Name>/temp_ambient_max
TempAmbientMin *int64 // /sys/class/power_supply/<Name>/temp_ambient_min
TempMax *int64 // /sys/class/power_supply/<Name>/temp_max
TempMin *int64 // /sys/class/power_supply/<Name>/temp_min
TimeToEmptyAvg *int64 // /sys/class/power_supply/<Name>/time_to_empty_avg
TimeToEmptyNow *int64 // /sys/class/power_supply/<Name>/time_to_empty_now
TimeToFullAvg *int64 // /sys/class/power_supply/<Name>/time_to_full_avg
TimeToFullNow *int64 // /sys/class/power_supply/<Name>/time_to_full_now
Type string // /sys/class/power_supply/<Name>/type
UsbType string // /sys/class/power_supply/<Name>/usb_type
VoltageAvg *int64 // /sys/class/power_supply/<Name>/voltage_avg
VoltageBoot *int64 // /sys/class/power_supply/<Name>/voltage_boot
VoltageMax *int64 // /sys/class/power_supply/<Name>/voltage_max
VoltageMaxDesign *int64 // /sys/class/power_supply/<Name>/voltage_max_design
VoltageMin *int64 // /sys/class/power_supply/<Name>/voltage_min
VoltageMinDesign *int64 // /sys/class/power_supply/<Name>/voltage_min_design
VoltageNow *int64 // /sys/class/power_supply/<Name>/voltage_now
VoltageOCV *int64 // /sys/class/power_supply/<Name>/voltage_ocv
}
// PowerSupplyClass is a collection of every power supply in
// /sys/class/power_supply.
//
// The map keys are the names of the power supplies.
type PowerSupplyClass map[string]PowerSupply
// PowerSupplyClass returns info for all power supplies read from
// /sys/class/power_supply.
func (fs FS) PowerSupplyClass() (PowerSupplyClass, error) {
path := fs.sys.Path("class/power_supply")
dirs, err := os.ReadDir(path)
if err != nil {
return nil, err
}
psc := make(PowerSupplyClass, len(dirs))
for _, d := range dirs {
ps, err := parsePowerSupply(filepath.Join(path, d.Name()))
if err != nil {
return nil, err
}
ps.Name = d.Name()
psc[d.Name()] = *ps
}
return psc, nil
}
func parsePowerSupply(path string) (*PowerSupply, error) {
files, err := os.ReadDir(path)
if err != nil {
return nil, err
}
var ps PowerSupply
for _, f := range files {
if !f.Type().IsRegular() {
continue
}
name := filepath.Join(path, f.Name())
value, err := util.SysReadFile(name)
if err != nil {
if os.IsNotExist(err) || err.Error() == "operation not supported" || errors.Is(err, os.ErrInvalid) {
continue
}
return nil, fmt.Errorf("failed to read file %q: %w", name, err)
}
vp := util.NewValueParser(value)
switch f.Name() {
case "authentic":
ps.Authentic = vp.PInt64()
case "calibrate":
ps.Calibrate = vp.PInt64()
case "capacity":
ps.Capacity = vp.PInt64()
case "capacity_alert_max":
ps.CapacityAlertMax = vp.PInt64()
case "capacity_alert_min":
ps.CapacityAlertMin = vp.PInt64()
case "capacity_level":
ps.CapacityLevel = value
case "charge_avg":
ps.ChargeAvg = vp.PInt64()
case "charge_control_limit":
ps.ChargeControlLimit = vp.PInt64()
case "charge_control_limit_max":
ps.ChargeControlLimitMax = vp.PInt64()
case "charge_counter":
ps.ChargeCounter = vp.PInt64()
case "charge_empty":
ps.ChargeEmpty = vp.PInt64()
case "charge_empty_design":
ps.ChargeEmptyDesign = vp.PInt64()
case "charge_full":
ps.ChargeFull = vp.PInt64()
case "charge_full_design":
ps.ChargeFullDesign = vp.PInt64()
case "charge_now":
ps.ChargeNow = vp.PInt64()
case "charge_term_current":
ps.ChargeTermCurrent = vp.PInt64()
case "charge_type":
ps.ChargeType = value
case "constant_charge_current":
ps.ConstantChargeCurrent = vp.PInt64()
case "constant_charge_current_max":
ps.ConstantChargeCurrentMax = vp.PInt64()
case "constant_charge_voltage":
ps.ConstantChargeVoltage = vp.PInt64()
case "constant_charge_voltage_max":
ps.ConstantChargeVoltageMax = vp.PInt64()
case "current_avg":
ps.CurrentAvg = vp.PInt64()
case "current_boot":
ps.CurrentBoot = vp.PInt64()
case "current_max":
ps.CurrentMax = vp.PInt64()
case "current_now":
ps.CurrentNow = vp.PInt64()
case "cycle_count":
ps.CycleCount = vp.PInt64()
case "energy_avg":
ps.EnergyAvg = vp.PInt64()
case "energy_empty":
ps.EnergyEmpty = vp.PInt64()
case "energy_empty_design":
ps.EnergyEmptyDesign = vp.PInt64()
case "energy_full":
ps.EnergyFull = vp.PInt64()
case "energy_full_design":
ps.EnergyFullDesign = vp.PInt64()
case "energy_now":
ps.EnergyNow = vp.PInt64()
case "health":
ps.Health = value
case "input_current_limit":
ps.InputCurrentLimit = vp.PInt64()
case "manufacturer":
ps.Manufacturer = value
case "model_name":
ps.ModelName = value
case "online":
ps.Online = vp.PInt64()
case "power_avg":
ps.PowerAvg = vp.PInt64()
case "power_now":
ps.PowerNow = vp.PInt64()
case "precharge_current":
ps.PrechargeCurrent = vp.PInt64()
case "present":
ps.Present = vp.PInt64()
case "scope":
ps.Scope = value
case "serial_number":
ps.SerialNumber = value
case "status":
ps.Status = value
case "technology":
ps.Technology = value
case "temp":
ps.Temp = vp.PInt64()
case "temp_alert_max":
ps.TempAlertMax = vp.PInt64()
case "temp_alert_min":
ps.TempAlertMin = vp.PInt64()
case "temp_ambient":
ps.TempAmbient = vp.PInt64()
case "temp_ambient_max":
ps.TempAmbientMax = vp.PInt64()
case "temp_ambient_min":
ps.TempAmbientMin = vp.PInt64()
case "temp_max":
ps.TempMax = vp.PInt64()
case "temp_min":
ps.TempMin = vp.PInt64()
case "time_to_empty_avg":
ps.TimeToEmptyAvg = vp.PInt64()
case "time_to_empty_now":
ps.TimeToEmptyNow = vp.PInt64()
case "time_to_full_avg":
ps.TimeToFullAvg = vp.PInt64()
case "time_to_full_now":
ps.TimeToFullNow = vp.PInt64()
case "type":
ps.Type = value
case "usb_type":
ps.UsbType = value
case "voltage_avg":
ps.VoltageAvg = vp.PInt64()
case "voltage_boot":
ps.VoltageBoot = vp.PInt64()
case "voltage_max":
ps.VoltageMax = vp.PInt64()
case "voltage_max_design":
ps.VoltageMaxDesign = vp.PInt64()
case "voltage_min":
ps.VoltageMin = vp.PInt64()
case "voltage_min_design":
ps.VoltageMinDesign = vp.PInt64()
case "voltage_now":
ps.VoltageNow = vp.PInt64()
case "voltage_ocv":
ps.VoltageOCV = vp.PInt64()
}
if err := vp.Err(); err != nil {
return nil, err
}
}
return &ps, nil
}
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