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Merge pull request #117 from shaardie/power_supply_class
Add Support for /sys/class/power_supply
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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. | ||
|
|
||
| // +build !windows | ||
|
|
||
| package sysfs | ||
|
|
||
| import ( | ||
| "fmt" | ||
| "io/ioutil" | ||
| "os" | ||
| "reflect" | ||
| "strconv" | ||
| "strings" | ||
|
|
||
| "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 `fileName:"authentic"` // /sys/class/power_suppy/<Name>/authentic | ||
| Calibrate *int64 `fileName:"calibrate"` // /sys/class/power_suppy/<Name>/calibrate | ||
| Capacity *int64 `fileName:"capacity"` // /sys/class/power_suppy/<Name>/capacity | ||
| CapacityAlertMax *int64 `fileName:"capacity_alert_max"` // /sys/class/power_suppy/<Name>/capacity_alert_max | ||
| CapacityAlertMin *int64 `fileName:"capacity_alert_min"` // /sys/class/power_suppy/<Name>/capacity_alert_min | ||
| CapacityLevel string `fileName:"capacity_level"` // /sys/class/power_suppy/<Name>/capacity_level | ||
| ChargeAvg *int64 `fileName:"charge_avg"` // /sys/class/power_suppy/<Name>/charge_avg | ||
| ChargeControlLimit *int64 `fileName:"charge_control_limit"` // /sys/class/power_suppy/<Name>/charge_control_limit | ||
| ChargeControlLimitMax *int64 `fileName:"charge_control_limit_max"` // /sys/class/power_suppy/<Name>/charge_control_limit_max | ||
| ChargeCounter *int64 `fileName:"charge_counter"` // /sys/class/power_suppy/<Name>/charge_counter | ||
| ChargeEmpty *int64 `fileName:"charge_empty"` // /sys/class/power_suppy/<Name>/charge_empty | ||
| ChargeEmptyDesign *int64 `fileName:"charge_empty_design"` // /sys/class/power_suppy/<Name>/charge_empty_design | ||
| ChargeFull *int64 `fileName:"charge_full"` // /sys/class/power_suppy/<Name>/charge_full | ||
| ChargeFullDesign *int64 `fileName:"charge_full_design"` // /sys/class/power_suppy/<Name>/charge_full_design | ||
| ChargeNow *int64 `fileName:"charge_now"` // /sys/class/power_suppy/<Name>/charge_now | ||
| ChargeTermCurrent *int64 `fileName:"charge_term_current"` // /sys/class/power_suppy/<Name>/charge_term_current | ||
| ChargeType string `fileName:"charge_type"` // /sys/class/power_supply/<Name>/charge_type | ||
| ConstantChargeCurrent *int64 `fileName:"constant_charge_current"` // /sys/class/power_suppy/<Name>/constant_charge_current | ||
| ConstantChargeCurrentMax *int64 `fileName:"constant_charge_current_max"` // /sys/class/power_suppy/<Name>/constant_charge_current_max | ||
| ConstantChargeVoltage *int64 `fileName:"constant_charge_voltage"` // /sys/class/power_suppy/<Name>/constant_charge_voltage | ||
| ConstantChargeVoltageMax *int64 `fileName:"constant_charge_voltage_max"` // /sys/class/power_suppy/<Name>/constant_charge_voltage_max | ||
| CurrentAvg *int64 `fileName:"current_avg"` // /sys/class/power_suppy/<Name>/current_avg | ||
| CurrentBoot *int64 `fileName:"current_boot"` // /sys/class/power_suppy/<Name>/current_boot | ||
| CurrentMax *int64 `fileName:"current_max"` // /sys/class/power_suppy/<Name>/current_max | ||
| CurrentNow *int64 `fileName:"current_now"` // /sys/class/power_suppy/<Name>/current_now | ||
| CycleCount *int64 `fileName:"cycle_count"` // /sys/class/power_suppy/<Name>/cycle_count | ||
| EnergyAvg *int64 `fileName:"energy_avg"` // /sys/class/power_supply/<Name>/energy_avg | ||
| EnergyEmpty *int64 `fileName:"energy_empty"` // /sys/class/power_suppy/<Name>/energy_empty | ||
| EnergyEmptyDesign *int64 `fileName:"energy_empty_design"` // /sys/class/power_suppy/<Name>/energy_empty_design | ||
| EnergyFull *int64 `fileName:"energy_full"` // /sys/class/power_suppy/<Name>/energy_full | ||
| EnergyFullDesign *int64 `fileName:"energy_full_design"` // /sys/class/power_suppy/<Name>/energy_full_design | ||
| EnergyNow *int64 `fileName:"energy_now"` // /sys/class/power_supply/<Name>/energy_now | ||
| Health string `fileName:"health"` // /sys/class/power_suppy/<Name>/health | ||
| InputCurrentLimit *int64 `fileName:"input_current_limit"` // /sys/class/power_suppy/<Name>/input_current_limit | ||
| Manufacturer string `fileName:"manufacturer"` // /sys/class/power_suppy/<Name>/manufacturer | ||
| ModelName string `fileName:"model_name"` // /sys/class/power_suppy/<Name>/model_name | ||
| Online *int64 `fileName:"online"` // /sys/class/power_suppy/<Name>/online | ||
| PowerAvg *int64 `fileName:"power_avg"` // /sys/class/power_suppy/<Name>/power_avg | ||
| PowerNow *int64 `fileName:"power_now"` // /sys/class/power_suppy/<Name>/power_now | ||
| PrechargeCurrent *int64 `fileName:"precharge_current"` // /sys/class/power_suppy/<Name>/precharge_current | ||
| Present *int64 `fileName:"present"` // /sys/class/power_suppy/<Name>/present | ||
| Scope *int64 `fileName:"scope"` // /sys/class/power_suppy/<Name>/scope | ||
| SerialNumber string `fileName:"serial_number"` // /sys/class/power_suppy/<Name>/serial_number | ||
| Status string `fileName:"status"` // /sys/class/power_supply/<Name>/status | ||
| Technology string `fileName:"technology"` // /sys/class/power_suppy/<Name>/technology | ||
| Temp *int64 `fileName:"temp"` // /sys/class/power_suppy/<Name>/temp | ||
| TempAlertMax *int64 `fileName:"temp_alert_max"` // /sys/class/power_suppy/<Name>/temp_alert_max | ||
| TempAlertMin *int64 `fileName:"temp_alert_min"` // /sys/class/power_suppy/<Name>/temp_alert_min | ||
| TempAmbient *int64 `fileName:"temp_ambient"` // /sys/class/power_suppy/<Name>/temp_ambient | ||
| TempAmbientMax *int64 `fileName:"temp_ambient_max"` // /sys/class/power_suppy/<Name>/temp_ambient_max | ||
| TempAmbientMin *int64 `fileName:"temp_ambient_min"` // /sys/class/power_suppy/<Name>/temp_ambient_min | ||
| TempMax *int64 `fileName:"temp_max"` // /sys/class/power_suppy/<Name>/temp_max | ||
| TempMin *int64 `fileName:"temp_min"` // /sys/class/power_suppy/<Name>/temp_min | ||
| TimeToEmptyAvg *int64 `fileName:"time_to_empty_avg"` // /sys/class/power_suppy/<Name>/time_to_empty_avg | ||
| TimeToEmptyNow *int64 `fileName:"time_to_empty_now"` // /sys/class/power_suppy/<Name>/time_to_empty_now | ||
| TimeToFullAvg *int64 `fileName:"time_to_full_avg"` // /sys/class/power_suppy/<Name>/time_to_full_avg | ||
| TimeToFullNow *int64 `fileName:"time_to_full_now"` // /sys/class/power_suppy/<Name>/time_to_full_now | ||
| Type string `fileName:"type"` // /sys/class/power_supply/<Name>/type | ||
| UsbType string `fileName:"usb_type"` // /sys/class/power_supply/<Name>/usb_type | ||
| VoltageAvg *int64 `fileName:"voltage_avg"` // /sys/class/power_supply/<Name>/voltage_avg | ||
| VoltageBoot *int64 `fileName:"voltage_boot"` // /sys/class/power_suppy/<Name>/voltage_boot | ||
| VoltageMax *int64 `fileName:"voltage_max"` // /sys/class/power_suppy/<Name>/voltage_max | ||
| VoltageMaxDesign *int64 `fileName:"voltage_max_design"` // /sys/class/power_suppy/<Name>/voltage_max_design | ||
| VoltageMin *int64 `fileName:"voltage_min"` // /sys/class/power_suppy/<Name>/voltage_min | ||
| VoltageMinDesign *int64 `fileName:"voltage_min_design"` // /sys/class/power_suppy/<Name>/voltage_min_design | ||
| VoltageNow *int64 `fileName:"voltage_now"` // /sys/class/power_supply/<Name>/voltage_now | ||
| VoltageOCV *int64 `fileName:"voltage_ocv"` // /sys/class/power_suppy/<Name>/voltage_ocv | ||
| } | ||
|
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||
| // 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 | ||
|
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| // NewPowerSupplyClass returns info for all power supplies read from /sys/class/power_supply/. | ||
| func NewPowerSupplyClass() (PowerSupplyClass, error) { | ||
| fs, err := NewFS(DefaultMountPoint) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
|
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| return fs.NewPowerSupplyClass() | ||
| } | ||
|
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| // NewPowerSupplyClass returns info for all power supplies read from /sys/class/power_supply/. | ||
| func (fs FS) NewPowerSupplyClass() (PowerSupplyClass, error) { | ||
| path := fs.Path("class/power_supply") | ||
|
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| powerSupplyDirs, err := ioutil.ReadDir(path) | ||
| if err != nil { | ||
| return PowerSupplyClass{}, fmt.Errorf("cannot access %s dir %s", path, err) | ||
| } | ||
|
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| powerSupplyClass := PowerSupplyClass{} | ||
| for _, powerSupplyDir := range powerSupplyDirs { | ||
| powerSupply, err := powerSupplyClass.parsePowerSupply(path + "/" + powerSupplyDir.Name()) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
| powerSupply.Name = powerSupplyDir.Name() | ||
| powerSupplyClass[powerSupplyDir.Name()] = *powerSupply | ||
| } | ||
| return powerSupplyClass, nil | ||
| } | ||
|
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| func (psc PowerSupplyClass) parsePowerSupply(powerSupplyPath string) (*PowerSupply, error) { | ||
| powerSupply := PowerSupply{} | ||
| powerSupplyElem := reflect.ValueOf(&powerSupply).Elem() | ||
| powerSupplyType := reflect.TypeOf(powerSupply) | ||
|
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| //start from 1 - skip the Name field | ||
| for i := 1; i < powerSupplyElem.NumField(); i++ { | ||
| fieldType := powerSupplyType.Field(i) | ||
| fieldValue := powerSupplyElem.Field(i) | ||
|
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||
| if fieldType.Tag.Get("fileName") == "" { | ||
| panic(fmt.Errorf("field %s does not have a filename tag", fieldType.Name)) | ||
| } | ||
|
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| value, err := util.SysReadFile(powerSupplyPath + "/" + fieldType.Tag.Get("fileName")) | ||
|
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| if err != nil { | ||
| if os.IsNotExist(err) || err.Error() == "operation not supported" || err.Error() == "invalid argument" { | ||
| continue | ||
| } | ||
| return nil, fmt.Errorf("could not access file %s: %s", fieldType.Tag.Get("fileName"), err) | ||
| } | ||
|
|
||
| switch fieldValue.Kind() { | ||
| case reflect.String: | ||
| fieldValue.SetString(value) | ||
| case reflect.Ptr: | ||
| var int64ptr *int64 | ||
| switch fieldValue.Type() { | ||
| case reflect.TypeOf(int64ptr): | ||
| var intValue int64 | ||
| if strings.HasPrefix(value, "0x") { | ||
| intValue, err = strconv.ParseInt(value[2:], 16, 64) | ||
| if err != nil { | ||
| return nil, fmt.Errorf("expected hex value for %s, got: %s", fieldType.Name, value) | ||
| } | ||
| } else { | ||
| intValue, err = strconv.ParseInt(value, 10, 64) | ||
| if err != nil { | ||
| return nil, fmt.Errorf("expected Uint64 value for %s, got: %s", fieldType.Name, value) | ||
| } | ||
| } | ||
| fieldValue.Set(reflect.ValueOf(&intValue)) | ||
| default: | ||
| return nil, fmt.Errorf("unhandled pointer type %q", fieldValue.Type()) | ||
| } | ||
| default: | ||
| return nil, fmt.Errorf("unhandled type %q", fieldValue.Kind()) | ||
| } | ||
| } | ||
|
|
||
| return &powerSupply, nil | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,80 @@ | ||
| // 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. | ||
|
|
||
| // +build !windows | ||
|
|
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| package sysfs | ||
|
|
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| import ( | ||
| "encoding/json" | ||
| "reflect" | ||
| "testing" | ||
| ) | ||
|
|
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| func TestNewPowerSupplyClass(t *testing.T) { | ||
| fs, err := NewFS("fixtures") | ||
| if err != nil { | ||
| t.Fatal(err) | ||
| } | ||
|
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| psc, err := fs.NewPowerSupplyClass() | ||
| if err != nil { | ||
| t.Fatal(err) | ||
| } | ||
|
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| var ( | ||
| acOnline int64 = 0 | ||
| bat0Capacity int64 = 98 | ||
| bat0CycleCount int64 = 0 | ||
| bat0EnergyFull int64 = 50060000 | ||
| bat0EnergyFullDesign int64 = 47520000 | ||
| bat0EnergyNow int64 = 49450000 | ||
| bat0PowerNow int64 = 4830000 | ||
| bat0Present int64 = 1 | ||
| bat0VoltageMinDesign int64 = 10800000 | ||
| bat0VoltageNow int64 = 12229000 | ||
| ) | ||
|
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| powerSupplyClass := PowerSupplyClass{ | ||
| "AC": { | ||
| Name: "AC", | ||
| Type: "Mains", | ||
| Online: &acOnline, | ||
| }, | ||
| "BAT0": { | ||
| Name: "BAT0", | ||
| Capacity: &bat0Capacity, | ||
| CapacityLevel: "Normal", | ||
| CycleCount: &bat0CycleCount, | ||
| EnergyFull: &bat0EnergyFull, | ||
| EnergyFullDesign: &bat0EnergyFullDesign, | ||
| EnergyNow: &bat0EnergyNow, | ||
| Manufacturer: "LGC", | ||
| ModelName: "LNV-45N1", | ||
| PowerNow: &bat0PowerNow, | ||
| Present: &bat0Present, | ||
| SerialNumber: "38109", | ||
| Status: "Discharging", | ||
| Technology: "Li-ion", | ||
| Type: "Battery", | ||
| VoltageMinDesign: &bat0VoltageMinDesign, | ||
| VoltageNow: &bat0VoltageNow, | ||
| }, | ||
| } | ||
|
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| if !reflect.DeepEqual(powerSupplyClass, psc) { | ||
| want, _ := json.Marshal(powerSupplyClass) | ||
| get, _ := json.Marshal(psc) | ||
| t.Errorf("Result not correct: want %v, have %v.", string(want), string(get)) | ||
| } | ||
| } |
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