From 9152c595708fa9b8bb61473b3aec139ebda84c10 Mon Sep 17 00:00:00 2001
From: Gerhard Tan <gwohau.tan@gmail.com>
Date: Mon, 19 Feb 2024 13:03:37 +0800
Subject: [PATCH] fix nil map error when using plugin headers in legacy format
 (#3996)

* fix nil map error when using plugin headers in legacy format

* create map on demand

* better initialization
---
 pkg/config/legacy/conversion.go | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/pkg/config/legacy/conversion.go b/pkg/config/legacy/conversion.go
index 0892e4f..dd8c4a1 100644
--- a/pkg/config/legacy/conversion.go
+++ b/pkg/config/legacy/conversion.go
@@ -175,6 +175,9 @@ func transformHeadersFromPluginParams(params map[string]string) v1.HeaderOperati
 			continue
 		}
 		if k = strings.TrimPrefix(k, "plugin_header_"); k != "" {
+			if out.Set == nil {
+				out.Set = make(map[string]string)
+			}
 			out.Set[k] = v
 		}
 	}