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* feat: Added Prometheus * fix: lint * fix: lint
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wolmi
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Oct 5, 2023
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,49 @@ | ||
| package utils | ||
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| import ( | ||
| "fmt" | ||
| "net/http" | ||
| "strconv" | ||
| "strings" | ||
| "time" | ||
|
|
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| "github.com/prometheus/client_golang/prometheus" | ||
| "github.com/prometheus/client_golang/prometheus/collectors" | ||
| "github.com/prometheus/client_golang/prometheus/promhttp" | ||
| ) | ||
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| type PromMetrics struct{} | ||
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| func (m *PromMetrics) StartPrometheus(enable bool, port int) { | ||
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| if enable { | ||
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| //Disable golang metris | ||
| prometheus.Unregister(collectors.NewGoCollector()) | ||
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| prometheusMux := http.NewServeMux() | ||
| // register endpoints | ||
| prometheusMux.Handle("/metrics", promhttp.Handler()) //Prometheus endpoint | ||
| prometheusMux.HandleFunc("/hltz", m.healthCheck) //Health Check endpoint | ||
| prometheusMux.HandleFunc("/", m.healthCheck) //Health Check endpoint | ||
| prometheusListenPort := strings.Join([]string{":", strconv.Itoa(port)}, "") | ||
| prometheusServer := &http.Server{ | ||
| ReadHeaderTimeout: 5 * time.Second, | ||
| Addr: prometheusListenPort, | ||
| Handler: prometheusMux, | ||
| } | ||
| go func() { | ||
| //Start server | ||
| fmt.Println("Prometheus endpoint started in port", port) | ||
| if err := prometheusServer.ListenAndServe(); err != nil { | ||
| panic(err) | ||
| } | ||
| }() | ||
| } | ||
| } | ||
|
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| // Generic function to handle a helath check | ||
| func (m *PromMetrics) healthCheck(w http.ResponseWriter, r *http.Request) { //nolint | ||
| w.WriteHeader(http.StatusOK) | ||
| w.Write([]byte("OK")) // nolint | ||
| } |