From f94f54a22418c1aa6a92103ba35bb3494ad0ed3b Mon Sep 17 00:00:00 2001
From: Derek Menteer <105233703+hashi-derek@users.noreply.github.com>
Date: Wed, 24 May 2023 16:32:45 -0500
Subject: [PATCH] Fix namespaced peer service updates / deletes. (#17456)

* Fix namespaced peer service updates / deletes.

This change fixes a function so that namespaced services are
correctly queried when handling updates / deletes. Prior to this
change, some peered services would not correctly be un-exported.

* Add changelog.
---
 .changelog/17456.txt                                   | 3 +++
 agent/grpc-external/services/peerstream/replication.go | 6 ++++--
 agent/grpc-external/services/peerstream/stream_test.go | 3 ++-
 3 files changed, 9 insertions(+), 3 deletions(-)
 create mode 100644 .changelog/17456.txt

diff --git a/.changelog/17456.txt b/.changelog/17456.txt
new file mode 100644
index 000000000..7b81d5354
--- /dev/null
+++ b/.changelog/17456.txt
@@ -0,0 +1,3 @@
+```release-note:bug
+peering: Fix issue where modifying the list of exported services did not correctly replicate changes for services that exist in a non-default namespace.
+```
diff --git a/agent/grpc-external/services/peerstream/replication.go b/agent/grpc-external/services/peerstream/replication.go
index 29d8db9dc..a0c1e4387 100644
--- a/agent/grpc-external/services/peerstream/replication.go
+++ b/agent/grpc-external/services/peerstream/replication.go
@@ -285,9 +285,11 @@ func (s *Server) handleUpsertExportedServiceList(
 		exportedServices[snSidecarProxy] = struct{}{}
 		serviceNames = append(serviceNames, sn)
 	}
-	entMeta := structs.NodeEnterpriseMetaInPartition(partition)
 
-	_, serviceList, err := s.GetStore().ServiceList(nil, entMeta, peerName)
+	// Ensure we query services from all namespaces in this partition when we perform
+	// this query or else we may not propagate updates / deletes correctly.
+	entMeta := acl.NewEnterpriseMetaWithPartition(partition, acl.WildcardName)
+	_, serviceList, err := s.GetStore().ServiceList(nil, &entMeta, peerName)
 	if err != nil {
 		return err
 	}
diff --git a/agent/grpc-external/services/peerstream/stream_test.go b/agent/grpc-external/services/peerstream/stream_test.go
index a2f1adb97..da4c55b22 100644
--- a/agent/grpc-external/services/peerstream/stream_test.go
+++ b/agent/grpc-external/services/peerstream/stream_test.go
@@ -1960,7 +1960,7 @@ func processResponse_ExportedServiceUpdates(
 	localEntMeta acl.EnterpriseMeta,
 	peerName string,
 	tests []PeeringProcessResponse_testCase,
-) {
+) *MutableStatus {
 	// create a peering in the state store
 	peerID := "1fabcd52-1d46-49b0-b1d8-71559aee47f5"
 	require.NoError(t, store.PeeringWrite(31, &pbpeering.PeeringWriteRequest{
@@ -2041,6 +2041,7 @@ func processResponse_ExportedServiceUpdates(
 			run(t, tc)
 		})
 	}
+	return mst
 }
 
 func Test_processResponse_ExportedServiceUpdates(t *testing.T) {