public async ValueTask <EventHandlingStatus> HandleEvent(IMessageConsumeContext context)
{
using var activity = SubscriptionActivity
.Create(
$"{Constants.Components.EventHandler}.{DiagnosticName}/{context.MessageType}",
ActivityKind.Internal,
tags: _defaultTags
)
?.SetContextTags(context)
?.Start();
try {
var status = await _innerHandler.HandleEvent(context).NoContext();
if (activity != null && status == EventHandlingStatus.Ignored)
{
activity.ActivityTraceFlags = ActivityTraceFlags.None;
}
activity?.SetActivityStatus(ActivityStatus.Ok());
return(status);
}
catch (Exception e) {
activity?.SetActivityStatus(ActivityStatus.Error(e, $"Error handling {context.MessageType}"));
throw;
}
}
public async ValueTask <SubscriptionGap> GetSubscriptionGap(CancellationToken cancellationToken)
{
using var activity = EventuousDiagnostics.ActivitySource
.StartActivity(ActivityKind.Internal)
?.SetTag("stream", "$all");
try {
var read = _eventStoreClient.ReadAllAsync(
Direction.Backwards,
Position.End,
1,
cancellationToken: cancellationToken
);
var events = await read.ToArrayAsync(cancellationToken).NoContext();
var last = _getLast();
activity?.SetActivityStatus(ActivityStatus.Ok());
return(new SubscriptionGap(
_subscriptionId,
events[0].Event.Position.CommitPosition - last?.Position ?? 0,
DateTime.UtcNow - events[0].Event.Created
));
}
catch (Exception e) {
activity?.SetActivityStatus(ActivityStatus.Error(e));
throw;
}
}
public async Task <Result> Handle(object command, CancellationToken cancellationToken)
{
using var activity = AppServiceActivity.StartActivity(_appServiceTypeName, command);
try {
var result = await InnerService.Handle(command, cancellationToken).NoContext();
if (activity != null)
{
if (result is ErrorResult error)
{
activity.SetActivityStatus(ActivityStatus.Error(error.Exception));
}
else
{
activity.SetActivityStatus(ActivityStatus.Ok());
}
}
return(result);
}
catch (Exception e) {
activity?.SetActivityStatus(ActivityStatus.Error(e));
throw;
}
}