63 lines
1.9 KiB
Plaintext
63 lines
1.9 KiB
Plaintext
// returns data points from {{ .Class }}
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// <add link to documentation here> - {{ .Class }} class
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package collector
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import (
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"log"
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"github.com/StackExchange/wmi"
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"github.com/prometheus/client_golang/prometheus"
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)
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func init() {
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Factories["{{ .CollectorName | toLower }}"] = New{{ .CollectorName }}Collector
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}
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// A {{ .CollectorName }}Collector is a Prometheus collector for WMI {{ .Class }} metrics
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type {{ .CollectorName }}Collector struct {
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{{- range $m := .Members }}
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{{ $m.Name }} *prometheus.Desc
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{{- end }}
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}
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// New{{ .CollectorName }}Collector ...
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func New{{ .CollectorName }}Collector() (Collector, error) {
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const subsystem = "{{ .CollectorName | toLower }}"
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return &{{ .CollectorName }}Collector{
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{{- range $m := .Members }}
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{{ $m.Name }}: prometheus.NewDesc(
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prometheus.BuildFQName(Namespace, subsystem, "{{ $m.Name | toSnakeCase }}"),
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"({{ $m.Name }})",
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nil,
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nil,
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),
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{{- end }}
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}, 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 *{{ .CollectorName }}Collector) Collect(ch chan<- prometheus.Metric) error {
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if desc, err := c.collect(ch); err != nil {
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log.Println("[ERROR] failed collecting {{ .CollectorName | toLower }} metrics:", desc, err)
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return err
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}
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return nil
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}
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type {{ .Class }} struct {
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Name string
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{{ range $m := .Members }}
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{{ $m.Name }} {{ $m.Type }}
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{{- end }}
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}
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func (c *{{ .CollectorName }}Collector) collect(ch chan<- prometheus.Metric) (*prometheus.Desc, error) {
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var dst []{{ .Class }}
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q := wmi.CreateQuery(&dst, "")
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if err := wmi.Query(q, &dst); err != nil {
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return nil, err
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}
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{{ range $m := .Members }}
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ch <- prometheus.MustNewConstMetric(
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c.{{ $m.Name }},
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prometheus.GaugeValue,
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float64(dst[0].{{ $m.Name }}),
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)
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{{ end }}
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return nil, nil
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}
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