mirror of
https://github.com/prometheus-community/windows_exporter.git
synced 2026-10-18 18:49:05 +02:00
123 lines
3.2 KiB
Go
123 lines
3.2 KiB
Go
// SPDX-License-Identifier: Apache-2.0
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//
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// Copyright 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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//go:build windows
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package dmi
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import (
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"fmt"
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"log/slog"
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"strings"
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"time"
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"github.com/alecthomas/kingpin/v2"
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"github.com/prometheus-community/windows_exporter/internal/headers/sysinfoapi"
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"github.com/prometheus-community/windows_exporter/internal/mi"
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"github.com/prometheus-community/windows_exporter/internal/types"
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"github.com/prometheus/client_golang/prometheus"
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)
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const Name = "dmi"
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type Config struct{}
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//nolint:gochecknoglobals
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var ConfigDefaults = Config{}
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// A Collector is a Prometheus Collector for DMI (SMBIOS) metrics.
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type Collector struct {
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config Config
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dmiInfo *prometheus.Desc
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}
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func New(config *Config) *Collector {
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if config == nil {
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config = &ConfigDefaults
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}
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c := &Collector{
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config: *config,
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}
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return c
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}
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func NewWithFlags(_ *kingpin.Application) *Collector {
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return &Collector{}
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}
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func (c *Collector) GetName() string {
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return Name
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}
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func (c *Collector) Close() error {
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return nil
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}
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func (c *Collector) Build(logger *slog.Logger, _ *mi.Session) error {
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info, err := sysinfoapi.GetSMBIOSSystemInfo()
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if err != nil {
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return fmt.Errorf("SMBIOS system info unavailable: %w", err)
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}
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// Sanitize label values: firmware strings may contain invalid UTF-8 bytes.
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// Use "�" as replacement to match node_exporter's behavior.
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cleanLabel := func(s string) string {
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return strings.ToValidUTF8(strings.TrimSpace(s), "�")
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}
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desc := prometheus.NewDesc(
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prometheus.BuildFQName(types.Namespace, Name, "info"),
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"A metric with a constant '1' value labeled by product_name, product_serial, "+
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"product_uuid, product_version, system_vendor from SMBIOS Type 1 (System Information).",
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nil,
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prometheus.Labels{
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"product_name": cleanLabel(info.ProductName),
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"product_serial": cleanLabel(info.SerialNumber),
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"product_uuid": strings.ToLower(cleanLabel(info.UUID)),
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"product_version": cleanLabel(info.Version),
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"system_vendor": cleanLabel(info.Manufacturer),
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},
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)
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// Validate the descriptor by attempting to create a metric.
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// If label values are still invalid, log a warning and skip.
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if _, err = prometheus.NewConstMetric(desc, prometheus.GaugeValue, 1.0); err != nil {
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logger.Warn("SMBIOS labels produced an invalid metric, skipping dmi_info", slog.Any("err", err))
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return nil
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}
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c.dmiInfo = desc
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return nil
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}
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// Collect sends the metric values for each metric
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// to the provided prometheus Metric channel.
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func (c *Collector) Collect(ch chan<- prometheus.Metric, _ time.Duration) error {
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if c.dmiInfo != nil {
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ch <- prometheus.MustNewConstMetric(
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c.dmiInfo,
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prometheus.GaugeValue,
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1.0,
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)
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}
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return nil
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}
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