module: remove unused variables; examples/complete: improve the examples

Author: shanye997

examples/complete/main.tf

@@ -9,11 +9,14 @@ data "alicloud_images" "default" {
 }
 
 data "alicloud_instance_types" "default" {
-  availability_zone = data.alicloud_polardb_zones.default.zones.0.id
+  availability_zone    = data.alicloud_polardb_zones.default.zones[0].id
+  cpu_core_count       = 2
+  memory_size          = 8
+  instance_type_family = "ecs.g6"
 }
 
 data "alicloud_kvstore_instance_classes" "default" {
-  zone_id        = data.alicloud_polardb_zones.default.zones.0.id
+  zone_id        = data.alicloud_polardb_zones.default.zones[0].id
   engine         = "Redis"
   engine_version = var.redis_engine_version
 }
@@ -22,37 +25,39 @@ data "alicloud_polardb_node_classes" "default" {
   pay_type   = var.pay_type
   db_type    = "MySQL"
   db_version = "5.6"
-  zone_id    = data.alicloud_polardb_zones.default.zones.0.id
+  zone_id    = data.alicloud_polardb_zones.default.zones[0].id
 }
 
 resource "alicloud_security_group" "default" {
-  name   = var.name
-  vpc_id = module.vpc.this_vpc_id
+  security_group_name = var.name
+  vpc_id              = module.vpc.this_vpc_id
 }
 
 module "vpc" {
-  source             = "alibaba/vpc/alicloud"
+  source  = "alibaba/vpc/alicloud"
+  version = "~>1.11"
+
   create             = true
   vpc_name           = var.name
   vpc_cidr           = "172.16.0.0/16"
   vswitch_name       = var.name
   vswitch_cidrs      = ["172.16.0.0/21"]
-  availability_zones = [data.alicloud_polardb_zones.default.zones.0.id]
+  availability_zones = [data.alicloud_polardb_zones.default.zones[0].id]
 }
 
 module "example" {
   source             = "../.."
   name               = var.name
   vswitch_id         = module.vpc.this_vswitch_ids[0]
-  availability_zone  = data.alicloud_polardb_zones.default.zones.0.id
+  availability_zone  = data.alicloud_polardb_zones.default.zones[0].id
   security_group_ids = [alicloud_security_group.default.id]
 
   #alicloud_instance
-  instance_type              = data.alicloud_instance_types.default.instance_types.0.id
+  instance_type              = data.alicloud_instance_types.default.instance_types[0].id
   system_disk_category       = "cloud_efficiency"
   system_disk_name           = var.system_disk_name
   system_disk_description    = var.system_disk_description
-  image_id                   = data.alicloud_images.default.images.0.id
+  image_id                   = data.alicloud_images.default.images[0].id
   internet_max_bandwidth_out = var.internet_max_bandwidth_out
   data_disks_name            = "data_disks_name"
   ecs_size                   = 1200
@@ -66,8 +71,8 @@ module "example" {
   redis_engine_version         = var.redis_engine_version
   redis_appendonly             = var.redis_appendonly
   redis_lazyfree_lazy_eviction = var.redis_lazyfree_lazy_eviction
-  redis_resource_group_id      = data.alicloud_resource_manager_resource_groups.default.ids.0
-  redis_instance_class         = data.alicloud_kvstore_instance_classes.default.instance_classes.0
+  redis_resource_group_id      = data.alicloud_resource_manager_resource_groups.default.ids[0]
+  redis_instance_class         = data.alicloud_kvstore_instance_classes.default.instance_classes[0]
 
   #alicloud_mongodb_instance
   mongodb_engine_version = "4.2"
@@ -78,7 +83,7 @@ module "example" {
   db_type                     = "MySQL"
   db_version                  = "5.6"
   pay_type                    = var.pay_type
-  db_node_class               = data.alicloud_polardb_node_classes.default.classes.0.supported_engines.0.available_resources.0.db_node_class
+  db_node_class               = data.alicloud_polardb_node_classes.default.classes[0].supported_engines[0].available_resources[0].db_node_class
   polardb_cluster_description = var.polardb_cluster_description
 
   #alicloud_polardb_database

examples/complete/outputs.tf

@@ -1,3 +1,4 @@
 output "this_ecs_name" {
-  value = module.example.this_ecs_name
+  description = "The name of the ECS instance."
+  value       = module.example.this_ecs_name
 }

examples/complete/versions.tf

@@ -0,0 +1,3 @@
+terraform {
+  required_version = ">= 0.13"
+}

outputs.tf

@@ -1,23 +1,29 @@
 output "this_ecs_id" {
-  value = alicloud_instance.default.id
+  description = "The ID of the ECS instance."
+  value       = alicloud_instance.default.id
 }
 
 output "this_redis_id" {
-  value = alicloud_kvstore_instance.default.id
+  description = "The ID of the Redis instance."
+  value       = alicloud_kvstore_instance.default.id
 }
 
 output "this_mongodb_id" {
-  value = alicloud_mongodb_instance.default.id
+  description = "The ID of the MongoDB instance."
+  value       = alicloud_mongodb_instance.default.id
 }
 
 output "this_polardb_cluster_id" {
-  value = alicloud_polardb_cluster.default.id
+  description = "The ID of the PolarDB cluster."
+  value       = alicloud_polardb_cluster.default.id
 }
 
 output "this_polardb_database_id" {
-  value = alicloud_polardb_database.default.id
+  description = "The ID of the PolarDB database."
+  value       = alicloud_polardb_database.default.id
 }
 
 output "this_ecs_name" {
-  value = alicloud_instance.default.instance_name
+  description = "The name of the ECS instance."
+  value       = alicloud_instance.default.instance_name
 }

variables.tf

@@ -189,8 +189,3 @@ variable "db_name" {
   default     = ""
 }
 
-variable "available_resource_creation" {
-  description = "The specification of available resource creation."
-  type        = string
-  default     = "PolarDB"
-}