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twin-gatus/controller/handler/handler.go
TwiN 24e207c0c6 fix(metrics): Disable compression on prometheus/client_golang's handler
Fixes #406

Root cause seems to be that promhttp.Handler() has its own gzip compression https://github.com/prometheus/client_golang/issues/622
2023-01-19 23:06:38 -05:00

54 lines
2.1 KiB
Go

package handler
import (
"io/fs"
"net/http"
"github.com/TwiN/gatus/v5/config"
static "github.com/TwiN/gatus/v5/web"
"github.com/TwiN/health"
"github.com/gorilla/mux"
"github.com/prometheus/client_golang/prometheus"
"github.com/prometheus/client_golang/prometheus/promhttp"
)
func CreateRouter(cfg *config.Config) *mux.Router {
router := mux.NewRouter()
if cfg.Metrics {
router.Handle("/metrics", promhttp.InstrumentMetricHandler(prometheus.DefaultRegisterer, promhttp.HandlerFor(prometheus.DefaultGatherer, promhttp.HandlerOpts{
DisableCompression: true,
}))).Methods("GET")
}
router.Use(GzipHandler)
api := router.PathPrefix("/api").Subrouter()
protected := api.PathPrefix("/").Subrouter()
unprotected := api.PathPrefix("/").Subrouter()
if cfg.Security != nil {
if err := cfg.Security.RegisterHandlers(router); err != nil {
panic(err)
}
if err := cfg.Security.ApplySecurityMiddleware(protected); err != nil {
panic(err)
}
}
// Endpoints
unprotected.Handle("/v1/config", ConfigHandler{securityConfig: cfg.Security}).Methods("GET")
protected.HandleFunc("/v1/endpoints/statuses", EndpointStatuses(cfg)).Methods("GET")
protected.HandleFunc("/v1/endpoints/{key}/statuses", EndpointStatus).Methods("GET")
unprotected.HandleFunc("/v1/endpoints/{key}/health/badge.svg", HealthBadge).Methods("GET")
unprotected.HandleFunc("/v1/endpoints/{key}/uptimes/{duration}/badge.svg", UptimeBadge).Methods("GET")
unprotected.HandleFunc("/v1/endpoints/{key}/response-times/{duration}/badge.svg", ResponseTimeBadge(cfg)).Methods("GET")
unprotected.HandleFunc("/v1/endpoints/{key}/response-times/{duration}/chart.svg", ResponseTimeChart).Methods("GET")
// Misc
router.Handle("/health", health.Handler().WithJSON(true)).Methods("GET")
// SPA
router.HandleFunc("/endpoints/{name}", SinglePageApplication(cfg.UI)).Methods("GET")
router.HandleFunc("/", SinglePageApplication(cfg.UI)).Methods("GET")
// Everything else falls back on static content
staticFileSystem, err := fs.Sub(static.FileSystem, static.RootPath)
if err != nil {
panic(err)
}
router.PathPrefix("/").Handler(http.FileServer(http.FS(staticFileSystem)))
return router
}