From a111ffb7c9f44bc75280c475d53dc2b06f369c72 Mon Sep 17 00:00:00 2001
From: James Kwon <96548424+hongil0316@users.noreply.github.com>
Date: Tue, 11 Jun 2024 18:37:07 -0400
Subject: [PATCH] fix rds parameter default group nuke issue (#721)

---
 aws/resources/rds_parameter_group.go | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/aws/resources/rds_parameter_group.go b/aws/resources/rds_parameter_group.go
index 69d94694..fddbb185 100644
--- a/aws/resources/rds_parameter_group.go
+++ b/aws/resources/rds_parameter_group.go
@@ -2,6 +2,7 @@ package resources
 
 import (
 	"context"
+	"strings"
 
 	"github.com/aws/aws-sdk-go/aws"
 	"github.com/aws/aws-sdk-go/service/rds"
@@ -18,6 +19,13 @@ func (pg *RdsParameterGroup) getAll(c context.Context, configObj config.Config)
 		&rds.DescribeDBParameterGroupsInput{},
 		func(page *rds.DescribeDBParameterGroupsOutput, lastPage bool) bool {
 			for _, parameterGroup := range page.DBParameterGroups {
+				// we can't delete default paramter group
+				// Default parameter group names can include a period, such as default.mysql8.0. However, custom parameter group names can't include a period.
+				if strings.HasPrefix(aws.StringValue(parameterGroup.DBParameterGroupName), "default.") {
+					logging.Debugf("Skipping %s since it is a default parameter group", aws.StringValue(parameterGroup.DBParameterGroupName))
+					continue
+				}
+
 				if configObj.RdsParameterGroup.ShouldInclude(config.ResourceValue{
 					Name: parameterGroup.DBParameterGroupName,
 				}) {