/// <summary>
/// Looks for a new message to process
/// </summary>
public void Handle()
{
try
{
try
{
TryProcessIncomingMessage();
}
catch (MessageException exception)
{
UserException?.Invoke(this, new MessageErrorEventArgs(exception));
}
catch (CommitException exception)
{
UserException?.Invoke(this, new MessageErrorEventArgs(exception));
}
catch (Exception e)
{
SystemException?.Invoke(this, new MessageErrorEventArgs(e));
//generic exceptions tend to indicate a serious problem - lets start delaying processing
//this counter will reset once a message has been processed by this thread
_seriousExceptionProcessBackOffHelper.Value.Wait();
}
}
catch (Exception ex) //not cool - one of the exception events threw an exception
{
//there isn't a whole lot we can do here
_log.ErrorException("An error has occurred while trying to handle an exception", ex, null);
}
}
/// <summary>
/// Looks for and processes a new message
/// </summary>
public async void Handle()
{
Interlocked.Increment(ref _waitingOnAsyncTasks);
try
{
try
{
await TryProcessIncomingMessageAsync().ConfigureAwait(false);
_seriousExceptionProcessBackOffHelper.Value.Reset();
}
catch (MessageException exception)
{
UserException?.Invoke(this, new MessageErrorEventArgs(exception));
}
catch (CommitException exception)
{
UserException?.Invoke(this, new MessageErrorEventArgs(exception));
}
catch (Exception e)
{
SystemException?.Invoke(this, new MessageErrorEventArgs(e));
//generic exceptions tend to indicate a serious problem - lets start delaying processing
//this counter will reset once a message has been processed by this thread
_seriousExceptionProcessBackOffHelper.Value.Wait();
}
}
catch (Exception ex) //not cool - one of the exception events threw an exception
{
//there is not a lot we can do here - log the exception
_log.ErrorException("An error has occurred while trying to handle an exception", ex, null);
}
finally
{
Interlocked.Decrement(ref _waitingOnAsyncTasks);
}
}
/// <summary>
/// Raises the system exception.
/// </summary>
/// <param name="sender">The sender.</param>
/// <param name="e">The <see cref="WorkerErrorEventArgs"/> instance containing the event data.</param>
protected void RaiseSystemException(object sender, WorkerErrorEventArgs e)
{
SystemException?.Invoke(sender, e);
}