public static async Task PlayThing()
{
var mapBuilder = new EventMapBuilder <GiftCardProjectionContext>();
mapBuilder
.Map <RedeemedEvent>()
.When((evt, context) =>
{
Console.WriteLine("in conditional");
return(Task.FromResult(evt.Credits > 0));
})
.As((evt, context) =>
{
Console.WriteLine("in as");
return(Task.CompletedTask);
});
var projectorMap = new ProjectorMap <GiftCardProjectionContext>
{
Custom = (context, projector) =>
{
Console.WriteLine("in projector");
return(projector());
}
};
var map = mapBuilder.Build(projectorMap);
var a = await map.Handle(new RedeemedEvent(5), new GiftCardProjectionContext());
Console.ReadLine();
}
public RepositoryProjectorMap(IProjectionRepository repository)
{
_repository = repository;
ProjectorMap = new ProjectorMap <TProjection, TIdentity, ProjectionContext>
{
Create = Create,
Delete = Delete,
Update = Update,
Custom = Custom
};
}
public static async Task Rubbish(Akka.Configuration.Config config)
{
var actorSystem = ActorSystem.Create("tessttt", config);
var repositoryActor =
actorSystem.ActorOf(Props.Create(() => new RepositoryActor <GiftCardProjection, GiftCardProjectionId>()), "repository-actor");
var projectorMap = new ProjectorMap <GiftCardProjection, GiftCardProjectionId, GiftCardProjectionContext>
{
Create = async(key, context, projector, shouldOverride) =>
{
var projection = new GiftCardProjection()
{
Id = key
};
await projector(projection);
repositoryActor.Tell(new Create <GiftCardProjection, GiftCardProjectionId> {
Projection = projection
});
},
Update = async(key, context, projector, createIfMissing) =>
{
var query = new Read <GiftCardProjectionId> {
Key = key
};
var projection = await repositoryActor.Ask <GiftCardProjection>(query);
await projector(projection);
repositoryActor.Tell(new Update <GiftCardProjection, GiftCardProjectionId> {
Projection = projection
});
},
Delete = (key, context) =>
{
var command = new Delete <GiftCardProjectionId> {
Key = key
};
repositoryActor.Tell(command);
return(Task.FromResult(true));
},
Custom = (context, projector) => projector()
};
var eventMap = new EventMapBuilder <GiftCardProjection, GiftCardProjectionId, GiftCardProjectionContext>();
eventMap.Map <DomainEvent <GiftCard, GiftCardId, IssuedEvent> >()
.AsCreateOf(x => IProjectionIdExtensions.From(x.AggregateIdentity))
.Using((projection, evt) =>
{
projection.Credits = evt.AggregateEvent.Credits;
projection.IsCancelled = false;
projection.Issued = evt.Timestamp.UtcDateTime;
});
eventMap.Map <DomainEvent <GiftCard, GiftCardId, RedeemedEvent> >()
.AsUpdateOf(x => IProjectionIdExtensions.From(x.AggregateIdentity))
.Using((projection, evt) =>
{
projection.Credits -= evt.AggregateEvent.Credits;
});
eventMap.Map <DomainEvent <GiftCard, GiftCardId, CancelledEvent> >()
.AsUpdateOf(x => IProjectionIdExtensions.From(x.AggregateIdentity))
.Using((projection, evt) =>
{
projection.IsCancelled = false;
});
var handler = eventMap.Build(projectorMap);
var context2 = new GiftCardProjectionContext();
var mat = ActorMaterializer.Create(actorSystem);
await PersistenceQuery
.Get(actorSystem)
.ReadJournalFor <SqlReadJournal>(SqlReadJournal.Identifier)
.CurrentEventsByPersistenceId("giftcard-a8fd515e-d4fb-4bf6-9d7f-67abdd0fdeef", 0, 10)
.RunForeach(async x => await handler.Handle(x.Event, context2), mat);
}
public static async Task Main(string[] args)
{
/*
* API NOTES
*
* For tagged events we will probably use IProjectionLocator to map tagged events to their appropriate keys.
*
* ProjectionManager will be an actor that has been propsed up for sending Source<EventEnvelope, NotUsed> to child projector
* child projector will have an Id and this Id will either be a consequence of it being a persistentId or it will
* be a consequence of it being a Tag + ProjectionLocator
*/
var config = ConfigurationFactory.ParseString(Config.Postgres);
var eventMapBuilder = new EventMapBuilder <GiftCardProjection, GiftCardProjectionId, GiftCardProjectionContext>();
eventMapBuilder.Map <DomainEvent <GiftCard, GiftCardId, IssuedEvent> >()
.AsCreateOf(x => IProjectionIdExtensions.From(x.AggregateIdentity))
.Using((projection, evt) =>
{
projection.Credits = evt.AggregateEvent.Credits;
projection.IsCancelled = false;
projection.Issued = evt.Timestamp.UtcDateTime;
});
eventMapBuilder.Map <DomainEvent <GiftCard, GiftCardId, RedeemedEvent> >()
.AsUpdateOf(x =>
{
return(IProjectionIdExtensions.From(x.AggregateIdentity));
})
.Using((projection, evt) =>
{
projection.Credits -= evt.AggregateEvent.Credits;
});
eventMapBuilder.Map <DomainEvent <GiftCard, GiftCardId, CancelledEvent> >()
.AsUpdateOf(x => IProjectionIdExtensions.From(x.AggregateIdentity))
.Using((projection, evt) =>
{
projection.IsCancelled = false;
});
var builder = ProjectorBuilder
.Create("giftcard-projection-manager", config);
var repositoryActor =
builder.ActorSystem.ActorOf(Props.Create(() => new RepositoryActor <GiftCardProjection, GiftCardProjectionId>()), "repository-actor-monkas");
var projectorMap = new ProjectorMap <GiftCardProjection, GiftCardProjectionId, GiftCardProjectionContext>
{
Create = async(key, context, projector, shouldOverride) =>
{
var projection = new GiftCardProjection()
{
Id = key
};
await projector(projection);
repositoryActor.Tell(new Create <GiftCardProjection, GiftCardProjectionId> {
Projection = projection
});
},
Update = async(key, context, projector, createIfMissing) =>
{
var query = new Read <GiftCardProjectionId> {
Key = key
};
var projection = await repositoryActor.Ask <GiftCardProjection>(query);
await projector(projection);
repositoryActor.Tell(new Update <GiftCardProjection, GiftCardProjectionId> {
Projection = projection
});
},
Delete = (key, context) =>
{
var command = new Delete <GiftCardProjectionId> {
Key = key
};
repositoryActor.Tell(command);
return(Task.FromResult(true));
},
Custom = (context, projector) => projector()
};
builder
.Using <SqlReadJournal>(SqlReadJournal.Identifier)
.WithEventMapBuilder(eventMapBuilder)
.WithProjectorBuilder(projectorMap)
.RunAggregateProjection(repositoryActor);
/*
*
* ProjectorBuilder
* .Create("GiftCardProjectionManager", config)
* .Using<SqlReadJournal>(SqlReadJournal.Identifier)
* .WithEventMap(GiftCardProjector.GetEventMap())
* .RunAggregateProjection();
*
* ProjectorBuilder
* .Create("IssuedGiftCardsProjecection", config)
* .Using<SqlReadJournal>(SqlReadJournal.Identifier)
* .WithEventMap(GiftCardProjector.GetEventMapForIssued())
* .Using<ProjectorLocator>(locator)
* .RunTaggedEventProjection();
*
*
*/
Console.WriteLine(" here ");
Console.ReadLine();
}
