Delete an Aurora DB cluster parameter group using an Amazon SDK

    /// <summary>
    /// Delete a particular parameter group by name.
    /// </summary>
    /// <param name="groupName">The name of the parameter group.</param>
    /// <returns>True if successful.</returns>
    public async Task<bool> DeleteClusterParameterGroupByNameAsync(string groupName)
    {
        var request = new DeleteDBClusterParameterGroupRequest
        {
            DBClusterParameterGroupName = groupName,
        };

        var response = await _amazonRDS.DeleteDBClusterParameterGroupAsync(request);
        return response.HttpStatusCode == System.Net.HttpStatusCode.OK;
    }

        Aws::Client::ClientConfiguration clientConfig;
        // Optional: Set to the AWS Region (overrides config file).
        // clientConfig.region = "us-east-1";

    Aws::RDS::RDSClient client(clientConfig);

        Aws::RDS::Model::DeleteDBClusterParameterGroupRequest request;
        request.SetDBClusterParameterGroupName(parameterGroupName);

        Aws::RDS::Model::DeleteDBClusterParameterGroupOutcome outcome =
                client.DeleteDBClusterParameterGroup(request);

        if (outcome.IsSuccess()) {
            std::cout << "The DB parameter group was successfully deleted."
                      << std::endl;
        }
        else {
            std::cerr << "Error with Aurora::DeleteDBClusterParameterGroup. "
                      << outcome.GetError().GetMessage()
                      << std::endl;
            result = false;
        }

    public static void deleteDBClusterGroup( RdsClient rdsClient, String dbClusterGroupName, String clusterDBARN) throws InterruptedException {
        try {
            boolean isDataDel = false;
            boolean didFind;
            String instanceARN ;

            // Make sure that the database has been deleted.
            while (!isDataDel) {
                DescribeDbInstancesResponse response = rdsClient.describeDBInstances();
                List<DBInstance> instanceList = response.dbInstances();
                int listSize = instanceList.size();
                isDataDel = false ;
                didFind = false;
                int index = 1;
                for (DBInstance instance: instanceList) {
                    instanceARN = instance.dbInstanceArn();
                    if (instanceARN.compareTo(clusterDBARN) == 0) {
                        System.out.println(clusterDBARN + " still exists");
                        didFind = true ;
                    }
                    if ((index == listSize) && (!didFind)) {
                        // Went through the entire list and did not find the database ARN.
                        isDataDel = true;
                    }
                    Thread.sleep(sleepTime * 1000);
                    index ++;
                }
            }

            DeleteDbClusterParameterGroupRequest clusterParameterGroupRequest = DeleteDbClusterParameterGroupRequest.builder()
                .dbClusterParameterGroupName(dbClusterGroupName)
                .build();

            rdsClient.deleteDBClusterParameterGroup(clusterParameterGroupRequest);
            System.out.println(dbClusterGroupName +" was deleted.");

        } catch (RdsException e) {
            System.out.println(e.getLocalizedMessage());
            System.exit(1);
        }
    }

@Throws(InterruptedException::class)
suspend fun deleteDBClusterGroup(dbClusterGroupName: String, clusterDBARN: String) {
    var isDataDel = false
    var didFind: Boolean
    var instanceARN: String

    RdsClient { region = "us-west-2" }.use { rdsClient ->
        // Make sure that the database has been deleted.
        while (!isDataDel) {
            val response = rdsClient.describeDbInstances()
            val instanceList = response.dbInstances
            val listSize = instanceList?.size
            isDataDel = false
            didFind = false
            var index = 1
            if (instanceList != null) {
                for (instance in instanceList) {
                    instanceARN = instance.dbInstanceArn.toString()
                    if (instanceARN.compareTo(clusterDBARN) == 0) {
                        println("$clusterDBARN still exists")
                        didFind = true
                    }
                    if (index == listSize && !didFind) {
                        // Went through the entire list and did not find the database ARN.
                        isDataDel = true
                    }
                    delay(slTime * 1000)
                    index++
                }
            }
        }
        val clusterParameterGroupRequest = DeleteDbClusterParameterGroupRequest {
            dbClusterParameterGroupName = dbClusterGroupName
        }

        rdsClient.deleteDbClusterParameterGroup(clusterParameterGroupRequest)
        println("$dbClusterGroupName was deleted.")
    }
}

class AuroraWrapper:
    """Encapsulates Aurora DB cluster actions."""
    def __init__(self, rds_client):
        """
        :param rds_client: A Boto3 Amazon Relational Database Service (Amazon RDS) client.
        """
        self.rds_client = rds_client

    @classmethod
    def from_client(cls):
        """
        Instantiates this class from a Boto3 client.
        """
        rds_client = boto3.client('rds')
        return cls(rds_client)

    def delete_parameter_group(self, parameter_group_name):
        """
        Deletes a DB cluster parameter group.

        :param parameter_group_name: The name of the parameter group to delete.
        :return: Data about the parameter group.
        """
        try:
            response = self.rds_client.delete_db_cluster_parameter_group(
                DBClusterParameterGroupName=parameter_group_name)
        except ClientError as err:
            logger.error(
                "Couldn't delete parameter group %s. Here's why: %s: %s", parameter_group_name,
                err.response['Error']['Code'], err.response['Error']['Message'])
            raise
        else:
            return response