/// <summary>
/// Ingests the specified <see cref="CloudEvent"/>
/// </summary>
/// <param name="serviceProvider">The current <see cref="IServiceProvider"/></param>
/// <param name="e">The <see cref="CloudEvent"/> to ingest</param>
/// <param name="cancellationToken">A <see cref="CancellationToken"/></param>
/// <returns>A new awaitable <see cref="Task"/></returns>
protected virtual async Task CorrelateAsync(IServiceProvider serviceProvider, CloudEvent e, CancellationToken cancellationToken)
{
try
{
var mediator = serviceProvider.GetRequiredService <IMediator>();
await mediator.ExecuteAndUnwrapAsync(new V1CorrelateEventCommand(V1Event.CreateFrom(e)), cancellationToken);
}
catch (TaskCanceledException)
{
throw;
}
catch (Exception ex)
{
this.Logger.LogError("An error occured while processing an incoming cloud event: {ex}", ex.ToString());
}
}
/// <summary>
/// Handles an incoming <see cref="CloudEvent"/>
/// </summary>
/// <param name="e">The <see cref="CloudEvent"/> to handle</param>
/// <param name="cancellationToken">A <see cref="CancellationToken"/></param>
/// <returns>A new awaitable <see cref="Task"/></returns>
protected virtual async Task OnEventAsync(CloudEvent e)
{
using (await this.Lock.LockAsync(this.CancellationTokenSource.Token))
{
if (this.IdleTimer != null)
{
this.IdleTimer.Dispose();
this.IdleTimer = null !;
}
if ((!string.IsNullOrWhiteSpace(this.EventDefinition.Source) && !Regex.IsMatch(e.Source !.ToString(), this.EventDefinition.Source, RegexOptions.IgnoreCase)) ||
(!string.IsNullOrWhiteSpace(this.EventDefinition.Type) && !Regex.IsMatch(e.Type !, this.EventDefinition.Type, RegexOptions.IgnoreCase)))
{
return;
}
if (!await this.Context.Workflow.TryCorrelateAsync(V1Event.CreateFrom(e), this.EventDefinition.Correlations?.Select(c => c.ContextAttributeName) !, this.CancellationTokenSource.Token))
{
return;
}
await this.OnNextAsync(new V1WorkflowActivityCompletedIntegrationEvent(this.Activity.Id, e.Data), this.CancellationTokenSource.Token);
await this.OnCompletedAsync(this.CancellationTokenSource.Token);
}
}