private async Task BuildProjections()
{
foreach (var projection in _projections)
{
var offset = await projection.Offset();
var @from = offset + 1;
var events = await _eventStream
.Load(@from, _configuration.BatchSize) ?? new List <IDomainEvent>();
var i = 0;
var lastEvent = events.Count;
foreach (var @event in events)
{
i++;
try
{
await projection.HandleEvent(@event, i == lastEvent);
}
catch (Exception ex)
{
HandleException(new AggregateException(new[]
{
new Exception($"ProjectionAgent: Unable to apply {@event.GetType().Name} event for {projection.GetType().Name} projection: {ex.Message}"),
ex
}));
return;
}
}
}
}
private void BuildProjections()
{
foreach (var projection in _projections)
{
var offset = projection.Offset().GetAwaiter().GetResult();
var @from = offset + 1;
var events = _eventStream
.Load(@from, _configuration.BatchSize, projection.Subscriptions())
.GetAwaiter()
.GetResult() ?? new List <IDomainEvent>();
foreach (var @event in events)
{
try
{
if (!_isActive)
{
ResetProjections();
return;
}
projection.HandleEvent(@event).GetAwaiter().GetResult();
}
catch (Exception ex)
{
HandleException(new AggregateException(new[]
{
new Exception($"ProjectionAgent: Unable to apply {@event.GetType().Name} event for {projection.GetType().Name} projection: {ex.Message}"),
ex
}));
break;
}
}
}
}
