abdullin

Topic Context

• Module 1
  • The worst welcome E001
  • Messaging basics E002
  • Commanding your words E003
  • Event sourcing basics E004
  • Aggregating stories E005
  • Community Code and questions 1 E006
  • Re-Factory E007
• Frameworks over forms is a design obsession E008

abdullin

// This is slightly advanced usage scenario of Lokad A+ES tests, that shows
// setting up test implementations of domain services in ES+friendly way 
// (really simple) that also prints out in the specifications. Price is an 
// instance of IPricingService, used by Application service, while Clock 
// is a static singleton actually.



[Test]
public void with_multiple_entries_and_previous_balance()

abdullin

// sample unit test for a command "LockUser"

    public class lock_user : user_syntax
    {

        static readonly UserId id = new UserId(1);
        static readonly SecurityId sec = new SecurityId(1);
        static readonly TimeSpan fiveMins = TimeSpan.FromMinutes(5);

        [Test]

abdullin

// Snippet that shows AJAX search over a denormalized projection (handled by server) in async
// for sending commands in async - just do the AJAX post to server
// for getting changes - just poll the server for view version
// for cases when polling is expensive - use web sockets.

<script type="text/javascript">
    $(document).ready(function () {

        $('#searchButton').click(function () {
            GetData($('#searchbox').val());

abdullin

/// <summary>
/// Creates convention-based routing rules
/// </summary>
public sealed class RedirectToDynamicCommand
{
    readonly IDictionary<Type, Wire> _dict = new Dictionary<Type, Wire>();

    sealed class Wire
    {
        public MethodInfo Method;

abdullin

/// <summary>
/// Source: https://gist.github.com/1308830
/// This simple envelope includes only:
/// <code>
/// Header - int32
/// TotalLength - int32
/// IdLength - int32
/// UTF8-encoded message ID - byte[IdLength]
/// ContractLength - int32
/// UTF-encoded contract name 0 byte[ContractLength]

abdullin

    /// <summary>
    /// This class scans all available specifications for messages used
    /// then performs round-trip via specified serializer,
    /// and then does the structural comparison of resulting values
    /// </summary>
    [TestFixture]
    public sealed class TestMessageSerialization
    {
        static Group[] ListMessages()
        {

abdullin

// This is a hacky sample (that works for me) of alternative way to use Lokad-codeDSL
// or any similar way of generating message contracts on-the-fly. Original approach was 
// with using T4 template, that would rebuild cs files from DSL representation, whenever
// we hit Ctrl-S.

// This approach works almost exactly like this (Ctrl-S to rebuild), but does not require VS
// to run or does not require unloading VS to change the underlying generator code.

// in fact it is extremely boring. Lolcats from MightyMoose could be used to improve the situation, though.
// any takers? :)

abdullin

// Sample of running AppEngine inside the Web Role, essentially merging
// 1 worker role and 1 web role (for Lokad.CQRS v2.0)
// For explanation see: http://abdullin.com/journal/2011/7/6/lokadcqrs-can-make-windows-azure-cheaper-for-you.html
public class WebRole : RoleEntryPoint
{
    CqrsEngineHost _host;
    readonly CancellationTokenSource _source = new CancellationTokenSource();

    public override bool OnStart()
    {

abdullin

// the gist is discussed in: http://groups.google.com/group/lokad/browse_thread/thread/4d39dc299037ea09
// This is a sample of a timer service for powering up sagas (for Lokad.CQRS v2.0)
// register it in CqrsHostBuilder like this:
// hostBuilder.Advanced.ConfigureContainer(cb => cb.RegisterType<TimerService>().As<IEngineProcess>());
public sealed class TimerService : IEngineProcess
{
    readonly IMessageSender _sender;

    public TimerService(IMessageSender sender)
    {