forked from kyma-project/kyma
/
duration_middleware.go
38 lines (30 loc) · 996 Bytes
/
duration_middleware.go
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package middleware
import (
"net/http"
"time"
"github.com/gorilla/mux"
"github.com/kyma-project/kyma/components/application-registry/internal/monitoring/collector"
"github.com/sirupsen/logrus"
)
type durationMiddleware struct {
metricsCollector collector.Collector
}
func NewDurationMiddleware(metricsCollector collector.Collector) *durationMiddleware {
return &durationMiddleware{metricsCollector: metricsCollector}
}
func (dm *durationMiddleware) Handle(next http.Handler) http.Handler {
return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
startedAt := time.Now()
next.ServeHTTP(w, r)
route := mux.CurrentRoute(r)
if route == nil {
logrus.Warnf("No route matched '%s' for request tracking", r.RequestURI)
}
template, err := route.GetPathTemplate()
if err != nil {
logrus.Errorf("Getting path template failed, %s", err.Error())
} else {
dm.metricsCollector.AddObservation(time.Since(startedAt).Seconds(), template, r.Method)
}
})
}