help redirect

main.go

@@ -38,6 +38,8 @@ var (
 	redirectFound    = os.Getenv("GOREDIRECT_FOUND")
 	redirectNotFound = os.Getenv("GOREDIRECT_NOT_FOUND")
 	redirectNoPath   = os.Getenv("GOREDIRECT_NOPATH")
+	redirectHelpKey = os.Getenv("GOREDIRECT_HELP_KEY")
+	redirectHelpRedirect = os.Getenv("GOREDIRECT_HELP_URL")
 )
 
 func lookupHandler(ctx context.Context, coll *mongo.Collection) func(w http.ResponseWriter, r *http.Request) {
@@ -56,6 +58,15 @@ func lookupHandler(ctx context.Context, coll *mongo.Collection) func(w http.Resp
 			return
 		}
 
+		if slug == redirectHelpKey {
+			counterHelpRedirect.Inc()
+
+			log.Printf("Redirecting help key %s to %s\n", redirectHelpKey, redirectHelpRedirect)
+			http.Redirect(w, r, redirectHelpRedirect, 302)
+
+			return
+		}
+
 		slug, locationCompartment, _ := strings.Cut(slug, "-")
 
 		if match := regexValid.MatchString(slug); !match {
@@ -106,6 +117,10 @@ var (
 		Name: "goredirect_no_path",
 		Help: "The total number of queries with no slug.",
 	})
+	counterHelpRedirect = promauto.NewCounter(prometheus.CounterOpts{
+		Name: "goredirect_help_path",
+		Help: "The total number of queries with help key redirect.",
+	})
 	counterInvalidSlug = promauto.NewCounter(prometheus.CounterOpts{
 		Name: "goredirect_invalid_slug",
 		Help: "The total number of queries that did not match regex.",