metrics: initial commit

router/middleware/middleware.go

@@ -3,9 +3,11 @@ package middleware
 import (
 	"context"
 	"crypto/subtle"
+	"github.com/pterodactyl/wings/metrics"
 	"io"
 	"net/http"
 	"os"
+	"strconv"
 	"strings"
 
 	"emperror.dev/errors"
@@ -352,3 +354,19 @@ func ExtractManager(c *gin.Context) *server.Manager {
 	}
 	panic("middleware/middleware: cannot extract server manager: not present in context")
 }
+
+func Metrics() gin.HandlerFunc {
+	return func(c *gin.Context) {
+		path := c.Request.URL.Path
+		rawQuery := c.Request.URL.RawQuery
+
+		c.Next()
+
+		// Skip over the server websocket endpoint.
+		if strings.HasSuffix(c.FullPath(), "/ws") {
+			return
+		}
+
+		metrics.HTTPRequestsTotal.WithLabelValues(c.Request.Method, c.FullPath(), path, rawQuery, strconv.Itoa(c.Writer.Status())).Inc()
+	}
+}

router/router.go

@@ -14,6 +14,7 @@ func Configure(m *server.Manager, client remote.Client) *gin.Engine {
 
 	router := gin.New()
 	router.Use(gin.Recovery())
+	router.Use(middleware.Metrics())
 	router.Use(middleware.AttachRequestID(), middleware.CaptureErrors(), middleware.SetAccessControlHeaders())
 	router.Use(middleware.AttachServerManager(m), middleware.AttachApiClient(client))
 	// @todo log this into a different file so you can setup IP blocking for abusive requests and such.