Halo AWS Control Tower

using Amazon.ControlTower;
using Amazon.ControlTower.Model;
using Microsoft.Extensions.DependencyInjection;
using Microsoft.Extensions.Hosting;
using Microsoft.Extensions.Logging;
using Microsoft.Extensions.Logging.Console;
using Microsoft.Extensions.Logging.Debug;
using LogLevel = Microsoft.Extensions.Logging.LogLevel;

namespace ControlTowerActions;

/// <summary>
/// A class that introduces the AWS Control Tower by listing the
/// available baselines for the account.
/// </summary>
public class HelloControlTower
{
    private static ILogger logger = null!;

    static async Task Main(string[] args)
    {
        // Set up dependency injection for AWS Control Tower.
        using var host = Host.CreateDefaultBuilder(args)
            .ConfigureLogging(logging =>
                logging.AddFilter("System", LogLevel.Debug)
                    .AddFilter<DebugLoggerProvider>("Microsoft", LogLevel.Information)
                    .AddFilter<ConsoleLoggerProvider>("Microsoft", LogLevel.Trace))
            .ConfigureServices((_, services) =>
                services.AddAWSService<IAmazonControlTower>()
            )
            .Build();

        logger = LoggerFactory.Create(builder => { builder.AddConsole(); })
            .CreateLogger<HelloControlTower>();

        var amazonClient = host.Services.GetRequiredService<IAmazonControlTower>();

        Console.Clear();
        Console.WriteLine("Hello, AWS Control Tower! Let's list available baselines:");
        Console.WriteLine();

        var baselines = new List<BaselineSummary>();

        try
        {
            var baselinesPaginator = amazonClient.Paginators.ListBaselines(new ListBaselinesRequest());

            await foreach (var response in baselinesPaginator.Responses)
            {
                baselines.AddRange(response.Baselines);
            }

            Console.WriteLine($"{baselines.Count} baseline(s) retrieved.");
            foreach (var baseline in baselines)
            {
                Console.WriteLine($"\t{baseline.Name}");
            }
        }
        catch (Amazon.ControlTower.Model.AccessDeniedException)
        {
            Console.WriteLine("Access denied. Please ensure you have the necessary permissions.");
        }
        catch (Exception ex)
        {
            Console.WriteLine($"An error occurred: {ex.Message}");
        }
    }
}

import boto3
from typing import Any, List


def hello_controltower(controltower_client: Any) -> None:
    """
    Use the AWS SDK for Python (Boto3) to create an AWS Control Tower client
    and list all available baselines.
    This example uses the default settings specified in your shared credentials
    and config files.

    :param controltower_client: A Boto3 AWS Control Tower Client object. This object wraps
                               the low-level AWS Control Tower service API.
    """
    print("Hello, AWS Control Tower! Let's list available baselines:\n")
    paginator = controltower_client.get_paginator("list_baselines")
    page_iterator = paginator.paginate()

    baseline_names: List[str] = []
    try:
        for page in page_iterator:
            for baseline in page["baselines"]:
                baseline_names.append(baseline["name"])

        print(f"{len(baseline_names)} baseline(s) retrieved.")
        for baseline_name in baseline_names:
            print(f"\t{baseline_name}")

    except controltower_client.exceptions.AccessDeniedException:
        print("Access denied. Please ensure you have the necessary permissions.")
    except Exception as e:
        print(f"An error occurred: {str(e)}")


if __name__ == "__main__":
    hello_controltower(boto3.client("controltower"))