HelloControlTower.cs

// Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
// SPDX-License-Identifier: Apache-2.0

// snippet-start:[ControlTower.dotnetv4.HelloControlTower]

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}");
        }
    }
}

// snippet-end:[ControlTower.dotnetv4.HelloControlTower]