chore: replace dots in ipv4 addresses with slashes

Signed-off-by: Rolf Ahrenberg <[email protected]>

src/utils/utilities.go

@@ -1,6 +1,7 @@
 package utils
 
 import (
+	"regexp"
 	"strings"
 
 	pb "github.com/envoyproxy/go-control-plane/envoy/service/ratelimit/v3"
@@ -65,5 +66,9 @@ func MaskCredentialsInUrl(url string) string {
 // Remove invalid characters from the stat name.
 func SanitizeStatName(s string) string {
 	r := strings.NewReplacer(":", "_", "|", "_")
-	return r.Replace(s)
+	ipv4Pattern := `\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}`
+	re := regexp.MustCompile(ipv4Pattern)
+	return re.ReplaceAllStringFunc(r.Replace(s), func(ip string) string {
+		return strings.ReplaceAll(ip, ".", "_")
+	})
 }