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There are 2 options for receiving the log information: subscribing to an event or using the LazyService from mst.NET. The later is the preferred one as it provides a weak connection to the library and minimizes the risk of objects remaining in memory by missing the unsubscribe.
The intention is to discontinue the event option in the next versions if there is no request for it.
Log messages via event
The event to be subscribed for receiving the log messages is:
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private static void Main(string[] args)
{
// initialization of the application
_working = true;
// or use the lazy service provided by mst.NET
Messaging.MessagingCenter.SetLoggingType(true);
ServiceLocator.SetLocatorProvider(GetServiceLocator);
MessageConsumerTask = Task.Factory.StartNew(ProcessNewMessages);
[...]
// end of application
_working = false;
MessageConsumerTask.Wait();
}
#region use LazyService from mst.NET
static private bool _working;
static private Task MessageConsumerTask;
static LazyService<ILogger> s_loggerService = new LazyService<ILogger>();
private static ServiceLocatorImpl s_serviceLocator;
static private void ProcessNewMessages()
{
LogItem newLogItem;
while (_working || !s_loggerService.Value.GeneralMessages.IsEmpty)
{
try
{
if (s_loggerService.Value.GeneralMessages.IsEmpty)
Thread.Sleep(1);
else if (s_loggerService.Value.GeneralMessages.TryDequeue(out newLogItem))
{
try
{
switch (newLogItem.LogLevel)
{
case LoggingLevel.Info:
Console.WriteLine(newLogItem.LogLevel + "\t" + newLogItem.Message);
break;
case LoggingLevel.ExceptionsErrors:
Console.WriteLine(newLogItem.LogLevel + "\t" + newLogItem.Message);
break;
case LoggingLevel.Debug:
Console.WriteLine(newLogItem.LogLevel + "\t" + newLogItem.Message);
break;
}
}
catch (Exception except)
{
Console.WriteLine(except.Message + Environment.NewLine + except.StackTrace);
}
}
}
catch (Exception except)
{
Console.WriteLine(except.Message + Environment.NewLine + except.StackTrace);
}
}
}
/// <summary>
/// Initializes all Application services
/// </summary>
private static IServiceLocator GetServiceLocator()
{
if (s_serviceLocator == null)
{
s_serviceLocator = new ServiceLocatorImpl();
s_serviceLocator.Add<ILogger>(new H5MNETLogger());
}
return s_serviceLocator;
}
#endregion |
Close file
Missing to close the file is a big sources of errors later on in the code. Therefore it is an important operation once all the actions on the file have been completed. It applies for both reading and writing.
The closing of the h5m file is done via the dispose methods. To ensure that the file is closed at a specific time, the Dispose method should be called explicitly.
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