new: feat: add metrics endpoint and prometheus monitoring

main.go

@@ -5,17 +5,33 @@ import (
 
 	handler "github.com/felipemarinho97/torrent-indexer/api"
 	"github.com/felipemarinho97/torrent-indexer/cache"
+	"github.com/felipemarinho97/torrent-indexer/monitoring"
+	"github.com/prometheus/client_golang/prometheus/promhttp"
 )
 
 func main() {
 	redis := cache.NewRedis()
-	indexers := handler.NewIndexers(redis)
+	metrics := monitoring.NewMetrics()
+	metrics.Register()
+	indexers := handler.NewIndexers(redis, metrics)
 
-	http.HandleFunc("/", handler.HandlerIndex)
-	http.HandleFunc("/indexers/comando_torrents", indexers.HandlerComandoIndexer)
-	http.HandleFunc("/indexers/bludv", indexers.HandlerBluDVIndexer)
+	indexerMux := http.NewServeMux()
+	metricsMux := http.NewServeMux()
 
-	err := http.ListenAndServe(":7006", nil)
+	indexerMux.HandleFunc("/", handler.HandlerIndex)
+	indexerMux.HandleFunc("/indexers/comando_torrents", indexers.HandlerComandoIndexer)
+	indexerMux.HandleFunc("/indexers/bludv", indexers.HandlerBluDVIndexer)
+
+	metricsMux.Handle("/metrics", promhttp.Handler())
+
+	go func() {
+		err := http.ListenAndServe(":8081", metricsMux)
+		if err != nil {
+			panic(err)
+		}
+	}()
+
+	err := http.ListenAndServe(":7006", indexerMux)
 	if err != nil {
 		panic(err)
 	}