From 57380ea7527a86ad2dd039ef33fba14d395e15df Mon Sep 17 00:00:00 2001
From: cskh <hui.kang@hashicorp.com>
Date: Wed, 26 Oct 2022 11:50:34 -0400
Subject: [PATCH] fix(peering): nil pointer in calling handleUpdateService
 (#15160)

* fix(peering): nil pointer in calling handleUpdateService

* changelog
---
 .changelog/15160.txt                                   |  3 +++
 agent/grpc-external/services/peerstream/replication.go | 10 ++++++----
 2 files changed, 9 insertions(+), 4 deletions(-)
 create mode 100644 .changelog/15160.txt

diff --git a/.changelog/15160.txt b/.changelog/15160.txt
new file mode 100644
index 000000000..8cfda548f
--- /dev/null
+++ b/.changelog/15160.txt
@@ -0,0 +1,3 @@
+```release-note:bug
+peering: fix nil pointer in calling handleUpdateService
+```
\ No newline at end of file
diff --git a/agent/grpc-external/services/peerstream/replication.go b/agent/grpc-external/services/peerstream/replication.go
index c43262b05..908c6d245 100644
--- a/agent/grpc-external/services/peerstream/replication.go
+++ b/agent/grpc-external/services/peerstream/replication.go
@@ -287,7 +287,6 @@ func (s *Server) handleUpsertExportedServiceList(
 	if err != nil {
 		return err
 	}
-
 	for _, sn := range serviceList {
 		if _, ok := exportedServices[sn]; !ok {
 			err := s.handleUpdateService(peerName, partition, sn, nil)
@@ -324,9 +323,12 @@ func (s *Server) handleUpdateService(
 		return fmt.Errorf("failed to read imported services: %w", err)
 	}
 
-	structsNodes, err := export.CheckServiceNodesToStruct()
-	if err != nil {
-		return fmt.Errorf("failed to convert protobuf instances to structs: %w", err)
+	structsNodes := []structs.CheckServiceNode{}
+	if export != nil {
+		structsNodes, err = export.CheckServiceNodesToStruct()
+		if err != nil {
+			return fmt.Errorf("failed to convert protobuf instances to structs: %w", err)
+		}
 	}
 
 	// Normalize the data into a convenient form for operation.