fix: Support existing VCN in other compartment (#564)

fix: Support existing VCN in other compartment

Author: chrisbulgaria

locals.tf

@@ -6,9 +6,9 @@ locals {
   operator_private_ip                    = var.create_operator == true ? module.operator[0].operator_private_ip : ""
   operator_instance_principal_group_name = var.create_operator == true ? module.operator[0].operator_instance_principal_group_name : ""
 
-  vcn_id       = var.create_vcn == true ? module.vcn[0].vcn_id : coalesce(var.vcn_id, data.oci_core_vcns.vcns[0].virtual_networks[0].id)
-  ig_route_id  = var.create_vcn == true ? module.vcn[0].ig_route_id : coalesce(var.ig_route_table_id, data.oci_core_route_tables.ig[0].route_tables[0].id)
-  nat_route_id = var.create_vcn == true ? module.vcn[0].nat_route_id : coalesce(var.nat_route_table_id, data.oci_core_route_tables.nat[0].route_tables[0].id)
+  vcn_id       = var.create_vcn == true ? module.vcn[0].vcn_id : coalesce(var.vcn_id, try(data.oci_core_vcns.vcns[0].virtual_networks[0].id,""))
+  ig_route_id  = var.create_vcn == true ? module.vcn[0].ig_route_id : coalesce(var.ig_route_table_id, try(data.oci_core_route_tables.ig[0].route_tables[0].id,""))
+  nat_route_id = var.create_vcn == true ? module.vcn[0].nat_route_id : coalesce(var.nat_route_table_id, try(data.oci_core_route_tables.nat[0].route_tables[0].id,""))
 
   validate_drg_input = var.create_drg && (var.drg_id != null) ? tobool("[ERROR]: create_drg variable can not be true if drg_id is provided.]") : true
 }