static void Main()

in cross-account-publish/c-sharp/ConsoleApp1/ConsoleApp1/Program.cs [32:114]
69 lines of code
7 McCabe index (conditional complexity)

        static void Main(string[] args)
        {
            Credentials credentials = null;
            string accountId = null;
            string roleName = null;

            if (args.Length == 2)
            {
                Console.WriteLine("Account ID and role name specified, publishing cross-account");
                accountId = args[0];
                roleName = args[1];
                credentials = GetCrossAccountCredentials(accountId, roleName);
            }
            else
            {
                Console.WriteLine("An invalid number of options was specified, cannot continue");
                Environment.Exit(1);
            }

            Console.WriteLine("Setting region to us-east-1");
            var myRegion = Amazon.RegionEndpoint.USEast1;

            Console.WriteLine("Creating IoT client");
            AmazonIoTClient myIotClient = new AmazonIoTClient(credentials, myRegion);

            Console.WriteLine(("Obtaining customer specific endpoint information for publishing messages to IoT Core"));

            try
            {
                var describeEndpointResponse = myIotClient.DescribeEndpointAsync(new DescribeEndpointRequest()).Result;
                var endpointAddress = "https://" + describeEndpointResponse.EndpointAddress;

                Console.WriteLine("Starting infinite publish loop");

                Console.WriteLine("Creating IoT data client for message publishing");
                AmazonIotDataClient myIotDataClient = new AmazonIotDataClient(endpointAddress, credentials);

                while (true)
                {
                    if (credentials != null)
                    {
                        Console.WriteLine("Refreshing cross-account credentials and IoT data client");
                        credentials = GetCrossAccountCredentials(accountId, roleName);
                        myIotDataClient = new AmazonIotDataClient(endpointAddress, credentials);
                    }

                    Console.WriteLine("Creating a publish request with a test message");

                    // This is done inside the loop because re-using publish requests does not work on Mono on Linux
                    var publishRequest = new PublishRequest();
                    publishRequest.Qos = 0;
                    publishRequest.Topic = Constants.Topic;
                    publishRequest.Payload = new MemoryStream(Encoding.UTF8.GetBytes(Constants.Payload ?? ""));

                    var publishResponse = myIotDataClient.PublishAsync(publishRequest).Result;
                    Console.WriteLine("Published message, sleeping...");
                    Console.WriteLine(publishResponse.HttpStatusCode.ToString());
                    Thread.Sleep(Constants.SleepTime);
                }
            }
            catch (AggregateException e)
            {
                // Simple check to see if the error looks like a missing role
                if (e.Message.Contains("does not indicate success"))
                {
                    Console.WriteLine(
                        "Failed to obtain the customer endpoint information or publish a message, is a role attached to this EC2 instance?");
                }
                else if (e.Message.Contains("is not authorized"))
                {
                    Console.WriteLine(
                        "Access denied when obtaining the customer endpoint information or when publishing a message, does the role attached to this EC2 instance have the correct permissions?");
                }
                else
                {
                    Console.WriteLine("FAIL Main");
                    Console.WriteLine(e.Message);
                    Console.WriteLine(e.StackTrace);
                }

                Environment.Exit(1);
            }
        }