mirror of
https://github.com/prometheus/node_exporter.git
synced 2025-08-20 18:33:52 -07:00
100 lines
3.1 KiB
Go
100 lines
3.1 KiB
Go
// Copyright 2018 The Prometheus Authors
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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// +build !windows
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package sysfs
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import (
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"os"
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"path/filepath"
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"strings"
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"github.com/prometheus/procfs/internal/util"
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)
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// ClassThermalZoneStats contains info from files in /sys/class/thermal/thermal_zone<zone>
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// for a single <zone>.
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// https://www.kernel.org/doc/Documentation/thermal/sysfs-api.txt
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type ClassThermalZoneStats struct {
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Name string // The name of the zone from the directory structure.
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Type string // The type of thermal zone.
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Temp uint64 // Temperature in millidegree Celsius.
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Policy string // One of the various thermal governors used for a particular zone.
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Mode *bool // Optional: One of the predefined values in [enabled, disabled].
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Passive *uint64 // Optional: millidegrees Celsius. (0 for disabled, > 1000 for enabled+value)
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}
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// ClassThermalZoneStats returns Thermal Zone metrics for all zones.
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func (fs FS) ClassThermalZoneStats() ([]ClassThermalZoneStats, error) {
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zones, err := filepath.Glob(fs.sys.Path("class/thermal/thermal_zone[0-9]*"))
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if err != nil {
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return []ClassThermalZoneStats{}, err
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}
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var zoneStats = ClassThermalZoneStats{}
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stats := make([]ClassThermalZoneStats, len(zones))
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for i, zone := range zones {
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zoneName := strings.TrimPrefix(filepath.Base(zone), "thermal_zone")
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zoneStats, err = parseClassThermalZone(zone)
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if err != nil {
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return []ClassThermalZoneStats{}, err
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}
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zoneStats.Name = zoneName
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stats[i] = zoneStats
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}
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return stats, nil
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}
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func parseClassThermalZone(zone string) (ClassThermalZoneStats, error) {
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// Required attributes.
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zoneType, err := util.SysReadFile(filepath.Join(zone, "type"))
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if err != nil {
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return ClassThermalZoneStats{}, err
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}
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zonePolicy, err := util.SysReadFile(filepath.Join(zone, "policy"))
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if err != nil {
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return ClassThermalZoneStats{}, err
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}
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zoneTemp, err := util.ReadUintFromFile(filepath.Join(zone, "temp"))
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if err != nil {
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return ClassThermalZoneStats{}, err
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}
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// Optional attributes.
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mode, err := util.SysReadFile(filepath.Join(zone, "mode"))
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if err != nil && !os.IsNotExist(err) && !os.IsPermission(err) {
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return ClassThermalZoneStats{}, err
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}
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zoneMode := util.ParseBool(mode)
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var zonePassive *uint64
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passive, err := util.ReadUintFromFile(filepath.Join(zone, "passive"))
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if os.IsNotExist(err) || os.IsPermission(err) {
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zonePassive = nil
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} else if err != nil {
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return ClassThermalZoneStats{}, err
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} else {
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zonePassive = &passive
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}
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return ClassThermalZoneStats{
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Type: zoneType,
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Policy: zonePolicy,
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Temp: zoneTemp,
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Mode: zoneMode,
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Passive: zonePassive,
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}, nil
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}
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