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chore: add "http.server.requests" metric #11

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Oct 1, 2025
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chore: add "http.server.requests" metric #11

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9 changes: 9 additions & 0 deletions main.go
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Original file line number Diff line number Diff line change
Expand Up @@ -5,6 +5,7 @@ import (
"log"
"net/http"
"os"
"strings"

"github.com/prometheus/client_golang/prometheus"
"github.com/prometheus/client_golang/prometheus/promhttp"
Expand Down Expand Up @@ -33,6 +34,11 @@ var (
Name: "http_request_duration_seconds",
Help: "Duration of all HTTP requests",
}, []string{"code", "handler", "method"})

httpRequestsTotalOtel = prometheus.NewCounterVec(prometheus.CounterOpts{
Name: "http.server.requests",
Help: "Count of HTTP requests per HTTP method (following the OpenTelemetry semantic conventions)",
}, []string{"http.request.method"})
)

func main() {
Expand All @@ -47,14 +53,17 @@ func main() {
r := prometheus.NewRegistry()
r.MustRegister(httpRequestsTotal)
r.MustRegister(httpRequestDuration)
r.MustRegister(httpRequestsTotalOtel)
r.MustRegister(version)

// Initialize the most likely labels.
httpRequestDuration.WithLabelValues("200", foundHandlerName, "get")
httpRequestsTotalOtel.WithLabelValues("get")
httpRequestsTotal.WithLabelValues("200", "get")
httpRequestsTotal.WithLabelValues("404", "get")

foundHandler := http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
httpRequestsTotalOtel.WithLabelValues(strings.ToLower(r.Method)).Inc()
w.WriteHeader(http.StatusOK)
w.Write([]byte("Hello from example application."))
})
Expand Down