fix: use try to set default for server list (#7)

Reviewed-on: #7
Co-authored-by: Robert Kaussow <mail@thegeeklab.de>
Co-committed-by: Robert Kaussow <mail@thegeeklab.de>

main.tf

@@ -1,19 +1,19 @@
 locals {
-  ipv4_addresses = flatten([
-    for server_key, server in var.server : [
-      for k, v in coalescelist(proxmox_virtual_environment_vm.server[server.name].ipv4_addresses, []) :
-      v if length(regexall("^(lo|docker|veth).*", proxmox_virtual_environment_vm.server[server.name].network_interface_names[k])) == 0
-    ]
-  ])
+  ipv4_addresses = {
+    for server_key, server in var.server : server.name => flatten([
+      for k, v in try(proxmox_virtual_environment_vm.server[server.name].ipv4_addresses, []) :
+      v if length(regexall(try(server.netif_filter, var.server_netif_filter), proxmox_virtual_environment_vm.server[server.name].network_interface_names[k])) > 0
+    ])
+  }
 }
 
 locals {
-  ipv6_addresses = flatten([
-    for server_key, server in var.server : [
-      for k, v in coalescelist(proxmox_virtual_environment_vm.server[server.name].ipv6_addresses, []) :
-      v if length(regexall("^(lo|docker|veth).*", proxmox_virtual_environment_vm.server[server.name].network_interface_names[k])) == 0
-    ]
-  ])
+  ipv6_addresses = {
+    for server_key, server in var.server : server.name => flatten([
+      for k, v in try(proxmox_virtual_environment_vm.server[server.name].ipv6_addresses, []) :
+      v if length(regexall(try(server.netif_filter, var.server_netif_filter), proxmox_virtual_environment_vm.server[server.name].network_interface_names[k])) > 0
+    ])
+  }
 }
 
 resource "proxmox_virtual_environment_vm" "server" {
@@ -113,7 +113,7 @@ resource "restapi_object" "ucs_server" {
     "position" : var.ucs_zones[try(each.value.dns_zone, var.server_dns_zone)],
     "properties" : {
       "name" : each.value.name,
-      "a" : concat(local.ipv4_addresses, local.ipv6_addresses),
+      "a" : concat(local.ipv4_addresses[each.key]),
     }
   })
 }

outputs.tf

@@ -2,8 +2,7 @@ output "output" {
   value = {
     for server_key, server in proxmox_virtual_environment_vm.server : server_key => merge(
       server,
-      { ipv4_addresses = local.ipv4_addresses },
-      { ipv6_addresses = local.ipv6_addresses }
+      { ipv4_addresses = local.ipv4_addresses[server_key] },
     )
   }
 }

variables.tf

@@ -43,3 +43,8 @@ variable "server_guest_agent" {
   type    = bool
   default = false
 }
+
+variable "server_netif_filter" {
+  type    = string
+  default = "^(eth|ens|enp).+"
+}