public void addEventListener(String Event, object function)
{
System.Diagnostics.Debug.WriteLine(String.Format("addEventListener(Event = {0}, Function = {1})", Event, function.ToString()));
if (EventListeners.ContainsKey(Event))
{
EventListeners.Remove(Event);
}
EventListeners.Add(Event, function);
}
public void Start(TflProcess process)
{
if (_started)
{
return;
}
_started = true;
Name = process.Name;
foreach (var log in process.Log)
{
switch (log.Provider)
{
case "file":
log.Folder = log.Folder.Replace('/', '\\');
log.File = log.File.Replace('/', '\\');
log.Folder = (log.Folder.Equals(Common.DefaultValue) ? "logs" : log.Folder).TrimEnd('\\') + "\\";
log.File = (log.File.Equals(Common.DefaultValue) ? "tfl-" + process.Name + ".log" : log.File).TrimStart('\\');
var fileListener = new ObservableEventListener();
fileListener.EnableEvents(TflEventSource.Log, (EventLevel)Enum.Parse(typeof(EventLevel), log.Level));
SinkSubscriptions.Add(fileListener.LogToRollingFlatFile(log.Folder + log.File, 5000, "yyyy-MM-dd", RollFileExistsBehavior.Increment, RollInterval.Day, new LegacyLogFormatter(), 0, log.Async));
EventListeners.Add(fileListener);
break;
case "mail":
if (log.Subject.Equals(Common.DefaultValue))
{
log.Subject = process.Name + " " + log.Level;
}
var mailListener = new ObservableEventListener();
mailListener.EnableEvents(TflEventSource.Log, EventLevel.Error);
SinkSubscriptions.Add(mailListener.LogToEmail(log));
EventListeners.Add(mailListener);
break;
}
}
}
/// <summary>
/// Register a listener for a specific event with topic expressions
/// </summary>
protected virtual void RegisterEventListener(TypeInfo type, MethodInfo method)
{
Logger.LogDebug($"Checking if method {method.Name} is a suitable event listener");
if (!IsMethodSuitableEvent(method, false))
{
Logger.LogCritical($"Method {method.Name} does not have a proper event listener signature in type {type.Name}");
throw new BusConfigurationException($"Method {method.Name} does not have a proper eventlistener signature in type {type.Name}");
}
Logger.LogDebug($"Evaluating parameter type {type.Name} of method {method.Name}");
Type parameterType = method.GetParameters().FirstOrDefault()?.ParameterType;
TopicAttribute[] topicAttributes = method.GetCustomAttributes <TopicAttribute>()
.ToArray();
string[] topicPatterns = topicAttributes
.Select(e => e.TopicPattern)
.ToArray();
Regex[] topicRegularExpressions = topicAttributes
.Select(e => e.TopicRegularExpression)
.ToArray();
Logger.LogDebug($"Found topic patterns {string.Join(", ", topicPatterns)} on method {method.Name} in type {type.Name}");
Logger.LogTrace($"Adding MicroserviceListener with type {type.Name} and method {method.Name}");
EventListeners.Add(new MicroserviceListener
{
TopicExpressions = topicPatterns,
TopicRegularExpressions = topicRegularExpressions,
Callback = message =>
{
Logger.LogDebug($"Attempting to instantiate type {type.Name}");
object instance = InstantiatePopulatedType(type);
Logger.LogTrace($"Retrieving string data from message with id {message.CorrelationId}");
string text = Encoding.Unicode.GetString(message.Body);
Logger.LogTrace("Checking if parameter type is equal to a string");
if (parameterType == StringType)
{
Logger.LogTrace($"Parameter type is a string, invoking method for message {message.CorrelationId} with body {text}");
method.Invoke(instance, new object[] { text });
return;
}
try
{
Logger.LogTrace($"Deserialized object from message with id {message.CorrelationId} and body {text}");
object jsonObject = JsonConvert.DeserializeObject(text, parameterType);
Logger.LogTrace($"Invoking method {method.Name} with message id {message.CorrelationId} and instance " +
$"of supposed type {type.Name} and actual type {jsonObject?.GetType().Name} with data {text}");
method.Invoke(instance, new[] { jsonObject });
}
catch (JsonReaderException readerException)
{
Logger.LogCritical($"JsonReaderException occured while deserializing message with type {message.EventType} and topic {message.Topic}," +
$" consider changing the parameter type of method {method.Name} of type {type.Name} to string. Data: {text}, exception: {readerException.Message}");
throw;
}
}
});
}
