Fixed cloning of cluster status to retain server id and shard id generator (oxia-db#307)

Author: merlimat

coordinator/model/cluster_status.go

@@ -95,7 +95,9 @@ func (n NamespaceStatus) Clone() NamespaceStatus {
 
 func (c ClusterStatus) Clone() *ClusterStatus {
 	r := &ClusterStatus{
-		Namespaces: make(map[string]NamespaceStatus),
+		Namespaces:       make(map[string]NamespaceStatus),
+		ShardIdGenerator: c.ShardIdGenerator,
+		ServerIdx:        c.ServerIdx,
 	}
 
 	for name, n := range c.Namespaces {

coordinator/model/cluster_status_test.go

@@ -44,6 +44,8 @@ func TestClusterStatus_Clone(t *testing.T) {
 				},
 			},
 		},
+		ShardIdGenerator: 5,
+		ServerIdx:        7,
 	}
 
 	cs2 := cs1.Clone()
@@ -56,4 +58,7 @@ func TestClusterStatus_Clone(t *testing.T) {
 	assert.NotSame(t, cs1.Namespaces["test-ns"].Shards, cs2.Namespaces["test-ns"].Shards)
 	assert.Equal(t, cs1.Namespaces["test-ns"].Shards[0], cs2.Namespaces["test-ns"].Shards[0])
 	assert.NotSame(t, cs1.Namespaces["test-ns"].Shards[0], cs2.Namespaces["test-ns"].Shards[0])
+
+	assert.Equal(t, cs1.ShardIdGenerator, cs2.ShardIdGenerator)
+	assert.Equal(t, cs1.ServerIdx, cs2.ServerIdx)
 }