add changelog and update doc

.changelog/1803.txt

@@ -0,0 +1,7 @@
+```release-note:new-data-source
+tencentcloud_postgresql_base_backups
+```
+
+```release-note:new-resource
+tencentcloud_postgresql_base_backup
+```

tencentcloud/service_tencentcloud_postgresql.go

@@ -805,7 +805,6 @@ func (me *PostgresqlService) DescribeDBEncryptionKeys(ctx context.Context, reque
 	return
 }
 
-func (me *PostgresqlService) DescribePostgresqlReadonlyGroups(ctx context.Context, filter []*postgresql.Filter) (instanceList []*postgresql.ReadOnlyGroup, errRet error) {
 func (me *PostgresqlService) DescribePostgresqlReadonlyGroups(ctx context.Context, filter []*postgresql.Filter) (instanceList []*postgresql.ReadOnlyGroup, errRet error) {
 	logId := getLogId(ctx)
 	request := postgresql.NewDescribeReadOnlyGroupsRequest()

website/docs/d/postgresql_base_backups.html.markdown

@@ -0,0 +1,69 @@
+---
+subcategory: "TencentDB for PostgreSQL(PostgreSQL)"
+layout: "tencentcloud"
+page_title: "TencentCloud: tencentcloud_postgresql_base_backups"
+sidebar_current: "docs-tencentcloud-datasource-postgresql_base_backups"
+description: |-
+  Use this data source to query detailed information of postgresql base_backups
+---
+
+# tencentcloud_postgresql_base_backups
+
+Use this data source to query detailed information of postgresql base_backups
+
+## Example Usage
+
+```hcl
+data "tencentcloud_postgresql_base_backups" "base_backups" {
+  min_finish_time = "%s"
+  max_finish_time = "%s"
+
+  order_by      = "StartTime"
+  order_by_type = "asc"
+}
+
+data "tencentcloud_postgresql_base_backups" "base_backups" {
+  filters {
+    name   = "db-instance-id"
+    values = [local.pgsql_id]
+  }
+
+  order_by      = "Size"
+  order_by_type = "asc"
+}
+```
+
+## Argument Reference
+
+The following arguments are supported:
+
+* `filters` - (Optional, List) Filter instances using one or more criteria. Valid filter names:db-instance-id: Filter by instance ID (in string format).db-instance-name: Filter by instance name (in string format).db-instance-ip: Filter by instance VPC IP (in string format).
+* `max_finish_time` - (Optional, String) Maximum end time of a backup in the format of `2018-01-01 00:00:00`. It is the current time by default.
+* `min_finish_time` - (Optional, String) Minimum end time of a backup in the format of `2018-01-01 00:00:00`. It is 7 days ago by default.
+* `order_by_type` - (Optional, String) Sorting order. Valid values: `asc` (ascending), `desc` (descending).
+* `order_by` - (Optional, String) Sorting field. Valid values: `StartTime`, `FinishTime`, `Size`.
+* `result_output_file` - (Optional, String) Used to save results.
+* `tags` - (Optional, Map) Tag description list.
+
+The `filters` object supports the following:
+
+* `name` - (Optional, String) Filter name.
+* `values` - (Optional, Set) One or more filter values.
+
+## Attributes Reference
+
+In addition to all arguments above, the following attributes are exported:
+
+* `base_backup_set` - List of full backup details.
+  * `backup_method` - Backup method, including physical and logical.
+  * `backup_mode` - Backup mode, including automatic and manual.
+  * `db_instance_id` - Instance ID.
+  * `expire_time` - Backup expiration time.
+  * `finish_time` - Backup end time.
+  * `id` - Unique ID of a backup file.
+  * `name` - Backup file name.
+  * `size` - Backup set size in bytes.
+  * `start_time` - Backup start time.
+  * `state` - Backup task status.
+
+

website/docs/r/postgresql_base_backup.html.markdown

@@ -0,0 +1,41 @@
+---
+subcategory: "TencentDB for PostgreSQL(PostgreSQL)"
+layout: "tencentcloud"
+page_title: "TencentCloud: tencentcloud_postgresql_base_backup"
+sidebar_current: "docs-tencentcloud-resource-postgresql_base_backup"
+description: |-
+  Provides a resource to create a postgresql base_backup
+---
+
+# tencentcloud_postgresql_base_backup
+
+Provides a resource to create a postgresql base_backup
+
+## Example Usage
+
+```hcl
+resource "tencentcloud_postgresql_base_backup" "base_backup" {
+  db_instance_id  = ""
+  new_expire_time = ""
+  tags = {
+    "createdBy" = "terraform"
+  }
+}
+```
+
+## Argument Reference
+
+The following arguments are supported:
+
+* `db_instance_id` - (Required, String) Instance ID.
+* `new_expire_time` - (Optional, String) New expiration time.
+* `tags` - (Optional, Map) Tag description list.
+
+## Attributes Reference
+
+In addition to all arguments above, the following attributes are exported:
+
+* `id` - ID of the resource.
+* `base_backup_id` - Base backup ID.
+
+

website/tencentcloud.erb

@@ -3221,6 +3221,9 @@
                         <li>
                             <a href="#">Data Sources</a>
                             <ul class="nav nav-auto-expand">
+                                <li>
+                                    <a href="/docs/providers/tencentcloud/d/postgresql_base_backups.html">tencentcloud_postgresql_base_backups</a>
+                                </li>
                                 <li>
                                     <a href="/docs/providers/tencentcloud/d/postgresql_instances.html">tencentcloud_postgresql_instances</a>
                                 </li>
@@ -3244,6 +3247,9 @@
                                 <li>
                                     <a href="/docs/providers/tencentcloud/r/postgresql_backup_plan_config.html">tencentcloud_postgresql_backup_plan_config</a>
                                 </li>
+                                <li>
+                                    <a href="/docs/providers/tencentcloud/r/postgresql_base_backup.html">tencentcloud_postgresql_base_backup</a>
+                                </li>
                                 <li>
                                     <a href="/docs/providers/tencentcloud/r/postgresql_instance.html">tencentcloud_postgresql_instance</a>
                                 </li>