public WorkerProcess(IEventConsumer consumer,
ISpotCharterCommandRepository source,
ISpotCharterUpdateViewRepository destination)
{
// Define mapping rule between Command and Query models
Mapper.Initialize(cfg => {
cfg.CreateMap <SpotCharterDomain.ValueObjects.FreightRate, string>().ConstructUsing((rate, ctx) => rate?.ToString() ?? null);
cfg.CreateMap <SpotCharter, SpotCharterView>()
.AfterMap((src, dest) => { dest.LastUpdate = DateTime.Now; });
});
this.source = source;
this.destination = destination;
this.consumer = consumer;
this.consumer.ReceivedEventHandler += (e) =>
{
try
{
dynamic eventPayload = JsonConvert.DeserializeObject(e.Payload);
var spotId = new SpotCharterId(Guid.Parse(eventPayload.AggregateId.Value.ToString()));
// check if last version has been updated already
if (!lastVersionsDictionary.Keys.Contains(spotId) || lastVersionsDictionary[spotId] < e.Version)
{
switch (e.EventName)
{
case "SpotCharterDeleted":
destination.Remove(spotId);
Console.WriteLine("Spot {0} removed.", spotId);
break;
default:
var spot = source.Get(spotId);
var spotView = Mapper.Map <SpotCharterView>(spot);
destination.Save(spotView);
lastVersionsDictionary[spotId] = spot.Version; // put the version from the entity, not from the processing event
Console.WriteLine("Spot {0} updated to version {1}", spotId, spot.Version);
break;
}
Console.WriteLine("[{3:HH:mm:ss}] Event {0}\tSpot Id {1} Version {2} processed.", e.EventName, spotId, e.Version, DateTime.Now);
}
else
{
Console.WriteLine("SpotId : {0} Version {1} already updated. Skipping.", spotId, e.Version);
}
consumer.AckReceived(e.Id);
}
catch (Exception ex)
{
Console.Error.WriteLine(ex);
}
};
}
