From 99b558fa7c189c95ecc85441d57bfb998f1479be Mon Sep 17 00:00:00 2001
From: Sven Rebhan <36194019+srebhan@users.noreply.github.com>
Date: Fri, 10 Dec 2021 22:25:24 +0100
Subject: [PATCH] fix: Handle duplicate registration of protocol-buffer files
 gracefully. (#10188)

---
 plugins/parsers/xpath/protocolbuffer_document.go | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/plugins/parsers/xpath/protocolbuffer_document.go b/plugins/parsers/xpath/protocolbuffer_document.go
index 4ae88812d96bb..55e96e46308fe 100644
--- a/plugins/parsers/xpath/protocolbuffer_document.go
+++ b/plugins/parsers/xpath/protocolbuffer_document.go
@@ -1,6 +1,7 @@
 package xpath
 
 import (
+	"errors"
 	"fmt"
 	"sort"
 	"strings"
@@ -55,6 +56,13 @@ func (d *protobufDocument) Init() error {
 		if err != nil {
 			return fmt.Errorf("creating file descriptor from proto failed: %v", err)
 		}
+		if _, err := protoregistry.GlobalFiles.FindFileByPath(fileDesc.Path()); !errors.Is(err, protoregistry.NotFound) {
+			if err != nil {
+				return fmt.Errorf("searching for file %q in registry failed: %v", fileDesc.Path(), err)
+			}
+			d.Log.Warnf("Protocol buffer with path %q already registered. Skipping...", fileDesc.Path())
+			continue
+		}
 		if err := protoregistry.GlobalFiles.RegisterFile(fileDesc); err != nil {
 			return fmt.Errorf("registering file descriptor %q failed: %v", fileDesc.Package(), err)
 		}