Bug 2042770: [Alibaba] fix resource creation for existing network

data/data/alibabacloud/cluster/vpc/eip.tf

@@ -1,4 +1,6 @@
 resource "alicloud_eip_address" "eip" {
+  count = length(var.vswitch_ids) == 0 ? 1 : 0
+
   description          = local.description
   address_name         = "${local.prefix}-eip"
   payment_type         = "PayAsYouGo"
@@ -13,7 +15,9 @@ resource "alicloud_eip_address" "eip" {
 }
 
 resource "alicloud_eip_association" "eip_association" {
-  allocation_id = alicloud_eip_address.eip.id
-  instance_id   = alicloud_nat_gateway.nat_gateway.id
+  count = length(var.vswitch_ids) == 0 ? 1 : 0
+
+  allocation_id = alicloud_eip_address.eip[0].id
+  instance_id   = alicloud_nat_gateway.nat_gateway[0].id
   instance_type = "Nat"
 }

data/data/alibabacloud/cluster/vpc/nat_gateway.tf

@@ -1,8 +1,10 @@
 
 resource "alicloud_nat_gateway" "nat_gateway" {
+  count = length(var.vswitch_ids) == 0 ? 1 : 0
+
   vpc_id               = local.vpc_id
   nat_gateway_name     = "${local.prefix}-ngw"
-  vswitch_id           = alicloud_vswitch.vswitch_nat_gateway.id
+  vswitch_id           = alicloud_vswitch.vswitch_nat_gateway[0].id
   internet_charge_type = "PayByLcu"
   nat_type             = "Enhanced"
   description          = local.description
@@ -15,10 +17,10 @@ resource "alicloud_nat_gateway" "nat_gateway" {
 }
 
 resource "alicloud_snat_entry" "snat_entrys" {
-  count = length(local.vswitch_ids)
+  count = length(var.vswitch_ids) == 0 ? length(local.vswitch_ids) : 0
 
   depends_on        = [alicloud_eip_association.eip_association]
-  snat_table_id     = alicloud_nat_gateway.nat_gateway.snat_table_ids
+  snat_table_id     = alicloud_nat_gateway.nat_gateway[0].snat_table_ids
   source_vswitch_id = local.vswitch_ids[count.index]
-  snat_ip           = alicloud_eip_address.eip.ip_address
+  snat_ip           = alicloud_eip_address.eip[0].ip_address
 }

data/data/alibabacloud/cluster/vpc/outputs.tf

@@ -10,18 +10,6 @@ output "az_to_vswitch_id" {
   value = zipmap(data.alicloud_vswitches.vswitches.vswitches.*.zone_id, data.alicloud_vswitches.vswitches.vswitches.*.id)
 }
 
-output "gw_id" {
-  value = alicloud_nat_gateway.nat_gateway.id
-}
-
-output "eip_id" {
-  value = alicloud_eip_address.eip.id
-}
-
-output "eip_ip" {
-  value = alicloud_eip_address.eip.ip_address
-}
-
 output "slb_ids" {
   value = [alicloud_slb_load_balancer.slb_external.id, alicloud_slb_load_balancer.slb_internal.id]
 }

data/data/alibabacloud/cluster/vpc/vpc.tf

@@ -43,6 +43,8 @@ resource "alicloud_vswitch" "vswitches" {
 }
 
 resource "alicloud_vswitch" "vswitch_nat_gateway" {
+  count = length(var.vswitch_ids) == 0 ? 1 : 0
+
   vswitch_name = "${local.prefix}-vswitch-nat-gateway"
   description  = local.description
   vpc_id       = local.vpc_id