private void Initiate(IActivityFactory activityFactory, IBaseMessage message, string processName)
{
var previousTrackingContext = message.GetTrackingContext();
// an outbound message without an ongoing process --i.e. that has no process affiliation-- denotes a
// publish/subscribe, or messaging-only process and the whole process needs to be tracked; that means the
// initiating messaging step, whose MessagingStepActivityId is still conveyed by the ambient
// previousTrackingContext, as well as the currently ongoing messaging step, which completes the process.
var isMessagingProcess = message.Direction().IsOutbound() &&
!previousTrackingContext.HasProcessAffiliation() &&
!previousTrackingContext.MessagingStepActivityId.IsNullOrEmpty();
if (_logger.IsDebugEnabled)
{
_logger.Debug($"Initiating tracking of a messaging {(isMessagingProcess ? "process" : "step")}.");
}
_process = isMessagingProcess
? activityFactory.CreateProcess(message, processName)
: previousTrackingContext.HasProcessAffiliation()
? activityFactory.FindProcess(previousTrackingContext)
: null;
_previousMessagingStep = isMessagingProcess
? activityFactory.FindMessagingStep(previousTrackingContext)
: null;
_messagingStep = activityFactory.CreateMessagingStep(message);
}
/// <summary>
/// Returns the <see cref="TrackingContext"/> associated to the <paramref name="message"/>.
/// </summary>
/// <param name="message">
/// Message whose associated <see cref="TrackingContext"/> will be returned.
/// </param>
/// <param name="throwOnEmpty">
/// <c>true</c> to throw an <see cref="InvalidOperationException"/> if none of the discrete activity Ids of the <see
/// cref="TrackingContext"/> are set in the <paramref name="message"/>'s context.
/// </param>
/// <returns>
/// The <see cref="TrackingContext"/> associated to the <paramref name="message"/>.
/// </returns>
public static TrackingContext GetTrackingContext(this IBaseMessage message, bool throwOnEmpty)
{
var trackingContext = message.GetTrackingContext();
if (throwOnEmpty && trackingContext.IsEmpty())
{
throw new InvalidOperationException("Invalid TrackingContext: None of its discrete activity Ids are set.");
}
return(trackingContext);
}
protected void CacheTrackingContext(IBaseMessage message, int duration)
{
// if propagation of TrackingContext is not disabled, cache the current TrackingContext
if (duration > -1)
{
_logger.DebugFormat("Caching current tracking context for {0} seconds", duration);
TrackingContextCache.Instance.Set(
message.GetProperty(BtsProperties.TransmitWorkId),
message.GetTrackingContext(),
duration + 1);
}
}
