feat(rdb_instance): add project_id filter to datasource (#2316)

Author: Codelax

docs/data-sources/rdb_instance.md

@@ -36,6 +36,8 @@ output "load_balancer_ip_addr" {
 - `instance_id` - (Optional) The RDB instance ID.
   Only one of `name` and `instance_id` should be specified.
 
+- `project_id` - (Optional) The ID of the project the RDB instance is in. Can be used to filter instances when using `name`.
+
 - `region` - (Defaults to [provider](../index.md#region) `region`) The [region](../guides/regions_and_zones.md#zones) in which the RDB instance exists.
 
 - `organization_id` - (Defaults to [provider](../index.md#organization_id) `organization_id`) The ID of the organization the RDB instance is in.

scaleway/data_source_rdb_instance.go

@@ -23,6 +23,7 @@ func dataSourceScalewayRDBInstance() *schema.Resource {
 		ConflictsWith: []string{"name"},
 		ValidateFunc:  validationUUIDorUUIDWithLocality(),
 	}
+	dsSchema["project_id"].Optional = true
 
 	return &schema.Resource{
 		ReadContext: dataSourceScalewayRDBInstanceRead,
@@ -38,10 +39,16 @@ func dataSourceScalewayRDBInstanceRead(ctx context.Context, d *schema.ResourceDa
 
 	instanceID, ok := d.GetOk("instance_id")
 	if !ok { // Get instance by region and name.
+		var projectID *string
+		if projectIDRaw, filterByProject := d.GetOk("project_id"); filterByProject {
+			projectID = scw.StringPtr(projectIDRaw.(string))
+		}
+
 		instanceName := d.Get("name").(string)
 		res, err := api.ListInstances(&rdb.ListInstancesRequest{
-			Region: region,
-			Name:   scw.StringPtr(instanceName),
+			Region:    region,
+			Name:      scw.StringPtr(instanceName),
+			ProjectID: projectID,
 		}, scw.WithContext(ctx))
 		if err != nil {
 			return diag.FromErr(err)