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fix(metrics): Disable compression on prometheus/client_golang's handler

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Fixes #406

Root cause seems to be that promhttp.Handler() has its own gzip compression https://github.com/prometheus/client_golang/issues/622
This commit is contained in:
TwiN 2023-01-19 23:06:38 -05:00
parent 90bb8f7b5f
commit 24e207c0c6
1 changed files with 4 additions and 1 deletions
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5
controller/handler/handler.go
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@ -8,13 +8,16 @@ import (
static "github.com/TwiN/gatus/v5/web" static "github.com/TwiN/gatus/v5/web"
"github.com/TwiN/health" "github.com/TwiN/health"
"github.com/gorilla/mux" "github.com/gorilla/mux"
"github.com/prometheus/client_golang/prometheus"
"github.com/prometheus/client_golang/prometheus/promhttp" "github.com/prometheus/client_golang/prometheus/promhttp"
) )
func CreateRouter(cfg *config.Config) *mux.Router { func CreateRouter(cfg *config.Config) *mux.Router {
router := mux.NewRouter() router := mux.NewRouter()
if cfg.Metrics { if cfg.Metrics {
router.Handle("/metrics", promhttp.Handler()).Methods("GET") router.Handle("/metrics", promhttp.InstrumentMetricHandler(prometheus.DefaultRegisterer, promhttp.HandlerFor(prometheus.DefaultGatherer, promhttp.HandlerOpts{
DisableCompression: true,
}))).Methods("GET")
} }
router.Use(GzipHandler) router.Use(GzipHandler)
api := router.PathPrefix("/api").Subrouter() api := router.PathPrefix("/api").Subrouter()