fix: Preserve tenant fields on partial update

pkg/ctl/tenant/update.go

@@ -106,7 +106,29 @@ func doUpdateTenant(vc *cmdutils.VerbCmd, data *utils.TenantData) error {
 
 	data.Name = vc.NameArg
 	admin := cmdutils.NewPulsarClient()
-	err := admin.Tenants().Update(*data)
+	tenantClient := admin.Tenants()
+
+	flags := vc.Command.Flags()
+	adminRolesFlag := flags.Lookup("admin-roles")
+	allowedClustersFlag := flags.Lookup("allowed-clusters")
+
+	adminRolesChanged := adminRolesFlag != nil && adminRolesFlag.Changed
+	allowedClustersChanged := allowedClustersFlag != nil && allowedClustersFlag.Changed
+
+	if !adminRolesChanged || !allowedClustersChanged {
+		current, err := tenantClient.Get(data.Name)
+		if err != nil {
+			return err
+		}
+		if !adminRolesChanged {
+			data.AdminRoles = current.AdminRoles
+		}
+		if !allowedClustersChanged {
+			data.AllowedClusters = current.AllowedClusters
+		}
+	}
+
+	err := tenantClient.Update(*data)
 	if err == nil {
 		vc.Command.Printf("Update tenant %s successfully\n", data.Name)
 	}

pkg/ctl/tenant/update_test.go

@@ -63,6 +63,49 @@ func TestUpdateTenantCmd(t *testing.T) {
 	assert.Equal(t, "standalone", tenantData.AllowedClusters[0])
 }
 
+func TestUpdateTenantPartial(t *testing.T) {
+	args := []string{"create", "--admin-roles", "initial-role", "--allowed-clusters", "standalone", "update-tenant-partial"}
+	_, execErr, _, _ := TestTenantCommands(createTenantCmd, args)
+	assert.Nil(t, execErr)
+
+	args = []string{"update", "--allowed-clusters", "standalone", "update-tenant-partial"}
+	_, execErr, _, _ = TestTenantCommands(UpdateTenantCmd, args)
+	assert.Nil(t, execErr)
+
+	args = []string{"get", "update-tenant-partial"}
+	out, execErr, _, _ := TestTenantCommands(getTenantCmd, args)
+	assert.Nil(t, execErr)
+
+	var tenantData utils.TenantData
+	err := json.Unmarshal(out.Bytes(), &tenantData)
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	assert.Equal(t, 1, len(tenantData.AdminRoles))
+	assert.Equal(t, "initial-role", tenantData.AdminRoles[0])
+	assert.Equal(t, 1, len(tenantData.AllowedClusters))
+	assert.Equal(t, "standalone", tenantData.AllowedClusters[0])
+
+	args = []string{"update", "--admin-roles", "updated-role", "update-tenant-partial"}
+	_, execErr, _, _ = TestTenantCommands(UpdateTenantCmd, args)
+	assert.Nil(t, execErr)
+
+	args = []string{"get", "update-tenant-partial"}
+	out, execErr, _, _ = TestTenantCommands(getTenantCmd, args)
+	assert.Nil(t, execErr)
+
+	err = json.Unmarshal(out.Bytes(), &tenantData)
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	assert.Equal(t, 1, len(tenantData.AdminRoles))
+	assert.Equal(t, "updated-role", tenantData.AdminRoles[0])
+	assert.Equal(t, 1, len(tenantData.AllowedClusters))
+	assert.Equal(t, "standalone", tenantData.AllowedClusters[0])
+}
+
 func TestUpdateArgsError(t *testing.T) {
 	args := []string{"update"}
 	_, _, nameErr, _ := TestTenantCommands(UpdateTenantCmd, args)