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package metrics_test
import (
"fmt"
"log"
"net/http"
"gitlab.com/gitlab-org/labkit/metrics"
)
func ExampleNewHandlerFactory() {
// Tell prometheus to include a "route" label for the http metrics
newMetricHandlerFunc := metrics.NewHandlerFactory(metrics.WithLabels("route"))
http.Handle("/foo",
newMetricHandlerFunc(
http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
fmt.Fprintf(w, "Hello foo")
}),
metrics.WithLabelValues(map[string]string{"route": "/foo"}), // Add instrumentation with a custom label of route="/foo"
))
http.Handle("/bar",
newMetricHandlerFunc(
http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
fmt.Fprintf(w, "Hello bar")
}),
metrics.WithLabelValues(map[string]string{"route": "/bar"}), // Add instrumentation with a custom label of route="/bar"
))
log.Fatal(http.ListenAndServe(":8080", nil))
}
|
