8f746a44bd
As an SRE team we would like to expose standard metrics and grouped by version of the application. Right now will expose only metrics related to Go but instrumentor should be used in other parts of the codebase so we can track other metrics, eg. number of tasks, boards, users etc. Similar as we do in MM. It will run in port `localhost:9092` and it is a new config `prometheus_address`. Also in the commit we introduced, `group.Add` which helps us to handle gracefully errors for goroutines. It's a good practice and there are couple of articles by Golang for this.
28 lines
705 B
Go
28 lines
705 B
Go
package prometheus
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import (
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"github.com/prometheus/client_golang/prometheus"
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"github.com/prometheus/client_golang/prometheus/promauto"
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)
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// Instrumentor used to instrumentate metrics in prometheus
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type Instrumentor struct {
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Version string
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}
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// NewInstrumentor Factory method to create a new instrumentator
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func NewInstrumentor(version string) *Instrumentor {
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return &Instrumentor{
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Version: version,
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}
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}
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// ExposeBuildInfo exposes a gauge in prometheus for build info
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func (i *Instrumentor) ExposeBuildInfo() {
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promauto.NewGaugeVec(prometheus.GaugeOpts{
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Name: "focalboard_build_info",
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Help: "Build information of Focalboard",
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}, []string{"Version"},
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).WithLabelValues(i.Version).Set(1)
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}
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