fix(cynosdb): [127578238] tencentcloud_cynosdb_cluster support instance_count params (#3525)

* add

* add

* add

Author: SevenEarth

.changelog/3525.txt

@@ -0,0 +1,3 @@
+```release-note:enhancement
+resource/tencentcloud_cynosdb_cluster: support `instance_count` params 
+```

tencentcloud/services/cynosdb/extension_cynosdb.go

@@ -12,6 +12,7 @@ const (
 	CYNOSDB_CHARGE_TYPE_POSTPAID = svcpostgresql.COMMON_PAYTYPE_POSTPAID
 	CYNOSDB_CHARGE_TYPE_PREPAID  = svcpostgresql.COMMON_PAYTYPE_PREPAID
 	CYNOSDB_SERVERLESS           = "SERVERLESS"
+	CYNOSDB_NORMAL               = "NORMAL"
 
 	CYNOSDB_STATUS_RUNNING  = "running"
 	CYNOSDB_STATUS_OFFLINE  = "offlined"
@@ -185,6 +186,13 @@ func TencentCynosdbClusterBaseInfo() map[string]*schema.Schema {
 			Sensitive:   true,
 			Description: "Password of `root` account.",
 		},
+		"instance_count": {
+			Type:        schema.TypeInt,
+			Optional:    true,
+			ForceNew:    true,
+			Computed:    true,
+			Description: "The number of instances, the range is (0,16], the default value is 2 (i.e. one RW instance + one Ro instance), the passed n means 1 RW instance + n-1 Ro instances (with the same specifications), if you need a more accurate cluster composition, please use InstanceInitInfos.",
+		},
 		// payment
 		"charge_type": {
 			Type:         schema.TypeString,

tencentcloud/services/cynosdb/resource_tc_cynosdb_cluster.go

@@ -95,6 +95,10 @@ func resourceTencentCloudCynosdbClusterCreate(d *schema.ResourceData, meta inter
 		request.SlaveZone = helper.String(v.(string))
 	}
 
+	if v, ok := d.GetOkExists("instance_count"); ok {
+		request.InstanceCount = helper.IntInt64(v.(int))
+	}
+
 	// set params
 	if v, ok := d.GetOk("param_items"); ok {
 		paramItems := v.([]interface{})
@@ -432,10 +436,14 @@ func resourceTencentCloudCynosdbClusterRead(d *schema.ResourceData, meta interfa
 		_ = d.Set("serverless_status_flag", status)
 	}
 
-	if _, ok := d.GetOk("db_mode"); ok || *item.DbMode == CYNOSDB_SERVERLESS {
+	if _, ok := d.GetOk("db_mode"); ok || *item.DbMode == CYNOSDB_SERVERLESS || *item.DbMode == CYNOSDB_NORMAL {
 		_ = d.Set("db_mode", item.DbMode)
 	}
 
+	if item.InstanceNum != nil {
+		_ = d.Set("instance_count", item.InstanceNum)
+	}
+
 	//tag
 	tagService := svctag.NewTagService(client)
 	tags, err := tagService.DescribeResourceTags(ctx, "cynosdb", "instance", client.Region, id)

tencentcloud/services/cynosdb/resource_tc_cynosdb_cluster.md

@@ -1,5 +1,7 @@
 Provide a resource to create a CynosDB cluster.
 
+~> **NOTE:** params `instance_count` and `instance_init_infos` only choose one. If neither parameter is set, the CynosDB cluster is created with parameter `instance_count` set to `2` by default(one RW instance + one Ro instance). If you only need to create a master instance, explicitly set the `instance_count` field to `1`, or configure the RW instance information in the `instance_init_infos` field.
+
 Example Usage
 
 Create a single availability zone NORMAL CynosDB cluster

website/docs/r/cynosdb_cluster.html.markdown

@@ -11,6 +11,8 @@ description: |-
 
 Provide a resource to create a CynosDB cluster.
 
+~> **NOTE:** params `instance_count` and `instance_init_infos` only choose one. If neither parameter is set, the CynosDB cluster is created with parameter `instance_count` set to `2` by default(one RW instance + one Ro instance). If you only need to create a master instance, explicitly set the `instance_count` field to `1`, or configure the RW instance information in the `instance_init_infos` field.
+
 ## Example Usage
 
 ### Create a single availability zone NORMAL CynosDB cluster
@@ -222,6 +224,7 @@ The following arguments are supported:
 * `cynos_version` - (Optional, String) Kernel version, you can enter it when modifying.
 * `db_mode` - (Optional, String) Specify DB mode, only available when `db_type` is `MYSQL`. Values: `NORMAL` (Default), `SERVERLESS`.
 * `force_delete` - (Optional, Bool) Indicate whether to delete cluster instance directly or not. Default is false. If set true, the cluster and its `All RELATED INSTANCES` will be deleted instead of staying recycle bin. Note: works for both `PREPAID` and `POSTPAID_BY_HOUR` cluster.
+* `instance_count` - (Optional, Int, ForceNew) The number of instances, the range is (0,16], the default value is 2 (i.e. one RW instance + one Ro instance), the passed n means 1 RW instance + n-1 Ro instances (with the same specifications), if you need a more accurate cluster composition, please use InstanceInitInfos.
 * `instance_cpu_core` - (Optional, Int) The number of CPU cores of read-write type instance in the CynosDB cluster. Required while creating normal cluster. Note: modification of this field will take effect immediately, if want to upgrade on maintenance window, please upgrade from console.
 * `instance_init_infos` - (Optional, List, ForceNew) Instance initialization configuration information, mainly used to select instances of different specifications when purchasing a cluster.
 * `instance_maintain_duration` - (Optional, Int) Duration time for maintenance, unit in second. `3600` by default.