Merge pull request #30775 from stevendborrelli/f-rds-subnetgroup-vpcid

Add vpcid  rds subnetgroup vpcid

Author: ewbankkit

.changelog/30775.txt

@@ -0,0 +1,3 @@
+```release-note:enhancement
+resource/aws_db_subnet_group: Add `vpc_id` attribute
+```

internal/service/rds/subnet_group.go

@@ -68,6 +68,10 @@ func ResourceSubnetGroup() *schema.Resource {
 				Computed: true,
 				Elem:     &schema.Schema{Type: schema.TypeString},
 			},
+			"vpc_id": {
+				Type:     schema.TypeString,
+				Computed: true,
+			},
 			names.AttrTags:    tftags.TagsSchema(),
 			names.AttrTagsAll: tftags.TagsSchemaComputed(),
 		},
@@ -126,6 +130,7 @@ func resourceSubnetGroupRead(ctx context.Context, d *schema.ResourceData, meta i
 	}
 	d.Set("subnet_ids", subnetIDs)
 	d.Set("supported_network_types", aws.StringValueSlice(v.SupportedNetworkTypes))
+	d.Set("vpc_id", v.VpcId)
 
 	return diags
 }

internal/service/rds/subnet_group_test.go

@@ -40,6 +40,7 @@ func TestAccRDSSubnetGroup_basic(t *testing.T) {
 					resource.TestCheckResourceAttr(resourceName, "subnet_ids.#", "2"),
 					resource.TestCheckResourceAttr(resourceName, "supported_network_types.#", "1"),
 					resource.TestCheckTypeSetElemAttr(resourceName, "supported_network_types.*", "IPV4"),
+					resource.TestCheckResourceAttrSet(resourceName, "vpc_id"),
 					resource.TestCheckResourceAttr(resourceName, "tags.%", "0"),
 				),
 			},

website/docs/r/db_subnet_group.html.markdown

@@ -43,6 +43,7 @@ In addition to all arguments above, the following attributes are exported:
 * `arn` - The ARN of the db subnet group.
 * `supported_network_types` - The network type of the db subnet group.
 * `tags_all` - A map of tags assigned to the resource, including those inherited from the provider [`default_tags` configuration block](https://registry.terraform.io/providers/hashicorp/aws/latest/docs#default_tags-configuration-block).
+* `vpc_id` - Provides the VPC ID of the DB subnet group.
 
 ## Import