static void Main(string[] args)
{
// Glue together the system.
ContainerBuilder builder = new ContainerBuilder();
// Singletons
builder.RegisterType <ConsoleLogger>().As <ILogger>().SingleInstance();
builder.RegisterType <EventBus>().As <IEventBus>().SingleInstance();
builder.RegisterType <ThreadPoolQueue>().As <IProcessingQueue>().SingleInstance();
// Per request.
builder.RegisterType <CachingService>().As <ICachingService>();
builder.RegisterType <DownloaderClient>().As <IDownloaderClient>();
builder.RegisterType <DownloadItemRepository>().As <IDownloadItemRepository>();
// Get the relevant parts.
IContainer container = builder.Build();
ILogger logger = container.Resolve <ILogger>();
ICachingService cachingService = container.Resolve <ICachingService>();
IEventBus eventBus = container.Resolve <IEventBus>();
Func <IDownloadItemRepository> createDownloadRepository = container.Resolve <Func <IDownloadItemRepository> >();
var mainThreadReady = new AutoResetEvent(false);
var downloadBegin = new ManualResetEvent(false);
var downloadComplete = new ManualResetEvent(false);
eventBus.Listen(EventBusToken.DownloadBegin, sender =>
{
// This code runs from the service thread. It is
// meant to synchronize the threads.
// Wait for the main thread to be ready to respond
// to the download beginning.
mainThreadReady.WaitOne();
// Alert the main thread that we have reached this point.
downloadBegin.Set();
// Wait until the main thread has finished testin whatever
// it wanted to test.
mainThreadReady.WaitOne();
});
eventBus.Listen(EventBusToken.DownloadComplete, sender => downloadComplete.Set());
// Start the download
var id = cachingService.StartDownload(Address);
// Let the processing thread know that we have unwound from StartDownload
mainThreadReady.Set();
// Wait for the processing thread to hit the DownloadBegin state.
downloadBegin.WaitOne();
// Assert that the download item is in a Begin state.
if (cachingService.GetDownloadStatus(id) != DownloadStatus.Downloading)
{
throw new Exception("item is incorrect state");
}
// Let the processing thread know that we have completed our inspection.
mainThreadReady.Set();
// Wait for the download to complete.
downloadComplete.WaitOne();
// Assert that the download item is in a Complete state.
if (cachingService.GetDownloadStatus(id) != DownloadStatus.Downloaded)
{
throw new Exception("item is incorrect state");
}
// Report some output.
logger.WriteLine("logged value {0}", id);
logger.WriteLine("Press any key to continue");
Console.ReadKey();
}
public void SucceedDownloadWithoutWcf()
{
#region Build the container
ContainerBuilder builder = InitializeBuilder();
// This download is going to succeed.
builder.RegisterType <SuccessDownloaderClient>().As <IDownloaderClient>();
builder.RegisterType <DownloadService>().As <IDownloadService>();
IContainer container = builder.Build();
#endregion
#region Get some utility classes
// Get the relevant parts.
ICachingService cachingService = container.Resolve <ICachingService>();
IEventBus eventBus = container.Resolve <IEventBus>();
#endregion
var queueHost = OpenWcfMsmq(container);
#region Create some synchronization mechanisms using the EventBus
var mainThreadReady = new AutoResetEvent(false);
var downloadBegin = new ManualResetEvent(false);
var downloadComplete = new ManualResetEvent(false);
eventBus.Listen(EventBusToken.DownloadBegin, sender =>
{
// This code runs from the service thread. It is
// meant to synchronize the threads.
// Wait for the main thread to be ready to respond
// to the download beginning.
mainThreadReady.WaitOne();
// Alert the main thread that we have reached this point.
downloadBegin.Set();
// Wait until the main thread has finished testin whatever
// it wanted to test.
mainThreadReady.WaitOne();
});
eventBus.Listen(EventBusToken.DownloadComplete, sender => downloadComplete.Set());
#endregion
#region Check that we moved into a Begin state as anticipated
// Start the download
var id = cachingService.StartDownload(Address);
// Let the processing thread know that we have unwound from StartDownload
mainThreadReady.Set();
// Wait for the processing thread to hit the DownloadBegin state.
downloadBegin.WaitOne();
// Assert that the download item is in a Begin state.
Assert.IsTrue(cachingService.GetDownloadStatus(id) == DownloadStatus.Downloading);
// Let the processing thread know that we have completed our inspection.
mainThreadReady.Set();
#endregion
#region Check that we downloaded the file.
// Wait for the download to complete.
downloadComplete.WaitOne();
// Assert that the download item is in a Complete state.
Assert.IsTrue(cachingService.GetDownloadStatus(id) == DownloadStatus.Downloaded);
#endregion
queueHost.Close();
}
