kerslake

public abstract class TwilioApiController : ApiController
{
    protected HttpResponseMessage TwiMLResponse(TwilioResponse response)
    {
        return this.Request.CreateResponse(HttpStatusCode.OK, response.Element, new XmlMediaTypeFormatter());
    }
}

kerslake

public class AuthenticateController : TwilioApiController
{
    public HttpResponseMessage Post(VoiceRequest request)
    {
        var pin = request.Digits;

        var authenticated = AuthenticationService.Authenticate(pin);

        if (!authenticated)
        {

kerslake

public class AuthenticationService
{
    private static readonly List<User> Users = new List<User>
    {
        new User { Id = 1, Pin = "123", Name = "Pascal" },
        new User { Id = 2, Pin = "234", Name = "Mike" },
        new User { Id = 3, Pin = "345", Name = "Howard" },
    };

    public static bool Authenticate(string pin)

kerslake

public class UserController : TwilioApiController
{
    public HttpResponseMessage Post(VoiceRequest request, string pin)
    {
        var user = AuthenticationService.GetUser(pin);

        var response = new TwilioResponse();
        response.Say(string.Format("Hello {0}", user.Name));
        response.Pause(2);
        response.Hangup();

kerslake

public class InvalidPinException : CustomException
{
    /* code omitted */

    public override ErrorAction ErrorAction
    {
        get
        {
            return ErrorAction.Ignore;
        }

kerslake

public static class FilterConfig
{
    public static void Register(HttpConfiguration config)
    {
        config.Filters.Add(new TwilioRequestErrorFilter());
    }
}

kerslake

public class TwilioRequestErrorFilter : ExceptionFilterAttribute
{
    public override void OnException(HttpActionExecutedContext context)
    {
        /* code omitted */

        var customException = context.Exception as CustomException;
        var errorAction = customException == null ? ErrorAction.Escalate : customException.ErrorAction;

        var parameters = context.ActionContext.ActionArguments.ToRequestParameters();

kerslake

public class NewRelicLogger
{
    public static void LogError(Exception ex, ErrorAction actionTaken, object parameters)
    {
        /* code omitted */
            
        var errorDetails = Create(ex, ex.Message, ex.StackTrace, actionTaken, parameters);

        LogToNewRelic(errorDetails);
        

kerslake

void Main()
{
	IObservable<PerformanceSample> performanceCounterObservable = PerfCounterObservable.FromRealTime(TimeSpan.FromSeconds(1), new[]{
			@"\Processor(_Total)\% Processor Time",
			@"\Memory(_Total)\% Committed Bytes In Use",
			@"\Memory(_Total)\Available MBytes"})
		.Take(6);
	performanceCounterObservable.Subscribe(new PerfSampleObserver());
}

kerslake

workflow Start-VM  
{ 
    Param (  
        [parameter(Mandatory=$true)] 
        [String] 
        $VMName,   
        
        [parameter(Mandatory=$true)] 
        [String] 
        $ServiceName