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PostHandler.cs
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PostHandler.cs
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using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Reflection;
using System.Text;
using System.Threading;
using StatLight.Core.Events;
using StatLight.Core.Common;
using StatLight.Core.Serialization;
namespace StatLight.Core.WebServer
{
public class PostHandler : IPostHandler
{
private readonly ILogger _logger;
private readonly IEventPublisher _eventPublisher;
private readonly ICurrentStatLightConfiguration _currentStatLightConfiguration;
private readonly ResponseFactory _responseFactory;
private readonly IDictionary<Type, MethodInfo> _publishMethods;
public PostHandler(ILogger logger, IEventPublisher eventPublisher, ICurrentStatLightConfiguration currentStatLightConfiguration, ResponseFactory responseFactory)
{
if (logger == null) throw new ArgumentNullException("logger");
if (eventPublisher == null) throw new ArgumentNullException("eventPublisher");
if (currentStatLightConfiguration == null) throw new ArgumentNullException("currentStatLightConfiguration");
_logger = logger;
_eventPublisher = eventPublisher;
_currentStatLightConfiguration = currentStatLightConfiguration;
_responseFactory = responseFactory;
MethodInfo makeGenericMethod = GetType().GetMethod("PublishIt", BindingFlags.Instance | BindingFlags.NonPublic);
Type clientEventType = typeof(ClientEvent);
_publishMethods = clientEventType
.Assembly.GetTypes()
.Where(w => w.Namespace == clientEventType.Namespace)
.Where(w => w.Name.EndsWith("ClientEvent", StringComparison.OrdinalIgnoreCase))
.ToDictionary(key => key, value => makeGenericMethod.MakeGenericMethod(value));
}
// Note: do not delete this method - it's used through reflection...
[System.Diagnostics.CodeAnalysis.SuppressMessage("Microsoft.Design", "CA1031:DoNotCatchGeneralExceptionTypes"), System.Diagnostics.CodeAnalysis.SuppressMessage("Microsoft.Performance", "CA1811:AvoidUncalledPrivateCode")]
private void PublishIt<T>(string xmlMessage)
where T : ClientEvent
{
try
{
var result = xmlMessage.Deserialize<T>();
//DebugLogClientEvent(result);
_eventPublisher.SendMessage(result);
}
catch (Exception ex)
{
var errMsg =
@"
********* An error happened Deserializing a type of event [{0}]
The Xml Attempting to deserialize is
-----
{1}
-----
The Error from deserializing is
-----
{2}
-----
"
.FormatWith(typeof (T).Name, xmlMessage, ex.ToString());
var @event = new FatalSilverlightExceptionServerEvent(DialogType.None)
{
Message = errMsg,
};
_eventPublisher.SendMessage(@event);
}
}
public virtual bool TryHandle(Stream messageStream, out string unknownPostData)
{
Interlocked.Increment(ref _currentMessagesPostedCount);
_eventPublisher.SendMessage<MessageReceivedFromClientServerEvent>();
unknownPostData = null;
var xmlMessage = GetPostedMessage(messageStream);
//_logger.Debug(xmlMessage);
if (Is<SignalTestCompleteClientEvent>(xmlMessage))
{
var result = xmlMessage.Deserialize<SignalTestCompleteClientEvent>();
_eventPublisher.SendMessage(result);
var totalMessagsPostedCount = result.TotalMessagesPostedCount;
_logger.Debug("");
_logger.Debug("StatLightService.TestComplete() with {0} total messages posted - Currently have {1} registered"
.FormatWith(totalMessagsPostedCount, _currentMessagesPostedCount));
_logger.Debug(result.WriteDebug());
if (!_browserInstancesComplete.ContainsKey(result.BrowserInstanceId))
_browserInstancesComplete.Add(result.BrowserInstanceId, totalMessagsPostedCount);
if (_browserInstancesComplete.Count == _currentStatLightConfiguration.Current.Client.NumberOfBrowserHosts)
{
_totalMessagesPostedCount = _browserInstancesComplete.Sum(s => s.Value);
_logger.Debug("Awaiting a total of {0} messages - currently have {1}".FormatWith(_totalMessagesPostedCount, _currentMessagesPostedCount));
}
TryWaitingForMessagesToCompletePosting();
return true;
}
if (xmlMessage.StartsWith("<", StringComparison.OrdinalIgnoreCase) && xmlMessage.IndexOf(' ') != -1)
{
string eventName = xmlMessage.Substring(1, xmlMessage.IndexOf(' ')).Trim();
if (_publishMethods.Any(w => w.Key.Name == eventName))
{
KeyValuePair<Type, MethodInfo> eventType = _publishMethods.Where(w => w.Key.Name == eventName).SingleOrDefault();
eventType.Value.Invoke(this, new[] { xmlMessage });
TryWaitingForMessagesToCompletePosting();
return true;
}
}
_logger.Debug("Should see this ***********************");
unknownPostData = xmlMessage;
return false;
}
private int _currentMessagesPostedCount;
private int? _totalMessagesPostedCount;
// Browser InstanceId, Total Messages sent count
private readonly Dictionary<int, int> _browserInstancesComplete = new Dictionary<int, int>();
public void ResetTestRunStatistics()
{
_responseFactory.Reset();
_browserInstancesComplete.Clear();
_totalMessagesPostedCount = null;
_currentMessagesPostedCount = 0;
}
[System.Diagnostics.CodeAnalysis.SuppressMessage("Microsoft.Naming", "CA2204:Literals should be spelled correctly", MessageId = "TestRunCompletedServerEvent")]
private void TryWaitingForMessagesToCompletePosting()
{
if (_totalMessagesPostedCount.HasValue && _currentMessagesPostedCount >= _totalMessagesPostedCount)
{
_logger.Debug("publishing TestRunCompletedServerEvent");
_eventPublisher.SendMessage(new TestRunCompletedServerEvent());
ResetTestRunStatistics();
}
}
public static string GetPostedMessage(Stream stream)
{
using (var reader = new StreamReader(stream, Encoding.UTF8))
{
string message = reader.ReadToEnd();
return message;
}
}
[System.Diagnostics.CodeAnalysis.SuppressMessage("Microsoft.Design", "CA1004:GenericMethodsShouldProvideTypeParameter")]
private static bool Is<T>(string xmlMessage)
{
if (xmlMessage == null) throw new ArgumentNullException("xmlMessage");
if (xmlMessage.StartsWith("<" + typeof(T).Name + " xmlns", StringComparison.OrdinalIgnoreCase))
{
return true;
}
return false;
}
}
}