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Add a DMI collector to expose the Desktop Management Interface (DMI) info from `/sys/class/dmi/id/`. This will expose information about the BIOS, mainboard, chassis, and product. Closes: prometheus#303 Signed-off-by: Benjamin Drung <benjamin.drung@ionos.com>
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| Original file line number | Diff line number | Diff line change |
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| @@ -0,0 +1,105 @@ | ||
| // Copyright 2021 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. | ||
|
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| //go:build linux && !nodmi | ||
| // +build linux,!nodmi | ||
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| package collector | ||
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| import ( | ||
| "errors" | ||
| "fmt" | ||
| "os" | ||
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| "github.com/go-kit/log" | ||
| "github.com/go-kit/log/level" | ||
| "github.com/prometheus/client_golang/prometheus" | ||
| "github.com/prometheus/procfs/sysfs" | ||
| ) | ||
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| type dmiCollector struct { | ||
| infoDesc *prometheus.Desc | ||
| values []string | ||
| } | ||
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| func init() { | ||
| registerCollector("dmi", defaultEnabled, NewDMICollector) | ||
| } | ||
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| // NewDMICollector returns a new Collector exposing DMI information. | ||
| func NewDMICollector(logger log.Logger) (Collector, error) { | ||
| fs, err := sysfs.NewFS(*sysPath) | ||
| if err != nil { | ||
| return nil, fmt.Errorf("failed to open sysfs: %w", err) | ||
| } | ||
|
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| dmi, err := fs.DMIClass() | ||
| if err != nil { | ||
| if errors.Is(err, os.ErrNotExist) { | ||
| level.Debug(logger).Log("msg", "Platform does not support Desktop Management Interface (DMI) information", "err", err) | ||
| dmi = &sysfs.DMIClass{} | ||
| } else { | ||
| return nil, fmt.Errorf("failed to read Desktop Management Interface (DMI) information: %w", err) | ||
| } | ||
| } | ||
|
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| var labels, values []string | ||
| for label, value := range map[string]*string{ | ||
| "bios_date": dmi.BiosDate, | ||
| "bios_release": dmi.BiosRelease, | ||
| "bios_vendor": dmi.BiosVendor, | ||
| "bios_version": dmi.BiosVersion, | ||
| "board_asset_tag": dmi.BoardAssetTag, | ||
| "board_name": dmi.BoardName, | ||
| "board_serial": dmi.BoardSerial, | ||
| "board_vendor": dmi.BoardVendor, | ||
| "board_version": dmi.BoardVersion, | ||
| "chassis_asset_tag": dmi.ChassisAssetTag, | ||
| "chassis_serial": dmi.ChassisSerial, | ||
| "chassis_vendor": dmi.ChassisVendor, | ||
| "chassis_version": dmi.ChassisVersion, | ||
| "product_family": dmi.ProductFamily, | ||
| "product_name": dmi.ProductName, | ||
| "product_serial": dmi.ProductSerial, | ||
| "product_sku": dmi.ProductSKU, | ||
| "product_uuid": dmi.ProductUUID, | ||
| "product_version": dmi.ProductVersion, | ||
| "system_vendor": dmi.SystemVendor, | ||
| } { | ||
| if value != nil { | ||
| labels = append(labels, label) | ||
| values = append(values, *value) | ||
| } | ||
| } | ||
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| // Construct DMI metric only once since it will not change until the next reboot. | ||
| return &dmiCollector{ | ||
| infoDesc: prometheus.NewDesc( | ||
| prometheus.BuildFQName(namespace, "dmi", "info"), | ||
| "A metric with a constant '1' value labeled by bios_date, bios_release, bios_vendor, bios_version, "+ | ||
| "board_asset_tag, board_name, board_serial, board_vendor, board_version, chassis_asset_tag, "+ | ||
| "chassis_serial, chassis_vendor, chassis_version, product_family, product_name, product_serial, "+ | ||
| "product_sku, product_uuid, product_version, system_vendor if provided by DMI.", | ||
| labels, nil, | ||
| ), | ||
| values: values, | ||
| }, nil | ||
| } | ||
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| func (c *dmiCollector) Update(ch chan<- prometheus.Metric) error { | ||
| if len(c.values) == 0 { | ||
| return ErrNoData | ||
| } | ||
| ch <- prometheus.MustNewConstMetric(c.infoDesc, prometheus.GaugeValue, 1.0, c.values...) | ||
| return nil | ||
| } |
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