public When_an_event_is_mapped_as_a_delete()
{
Given(() =>
{
var mapBuilder = new EventMapBuilder <ProductCatalogEntry, string, ProjectionContext>();
mapBuilder
.Map <ProductDiscontinuedEvent>()
.AsDeleteOf(e => e.ProductKey)
.ThrowingIfMissing();
map = mapBuilder.Build(new ProjectorMap <ProductCatalogEntry, string, ProjectionContext>
{
Delete = (key, context) =>
{
isDeleted = true;
return(Task.FromResult(true));
}
});
});
When(async() =>
{
await map.Handle(
new ProductDiscontinuedEvent
{
ProductKey = "c350E"
},
new ProjectionContext());
});
}
public When_deleting_a_non_existing_event_should_be_handled_manually()
{
Given(() =>
{
var mapBuilder = new EventMapBuilder <ProductCatalogEntry, string, ProjectionContext>();
mapBuilder
.Map <ProductDiscontinuedEvent>()
.AsDeleteOf(e => e.ProductKey)
.HandlingMissesUsing((key, context) =>
{
missedKey = key;
});
map = mapBuilder.Build(new ProjectorMap <ProductCatalogEntry, string, ProjectionContext>
{
Delete = (key, context) => Task.FromResult(false)
});
});
WhenLater(async() =>
{
await map.Handle(
new ProductDiscontinuedEvent
{
ProductKey = "c350E"
},
new ProjectionContext());
});
}
public When_an_event_is_mapped_as_a_custom_action()
{
Given(() =>
{
var mapBuilder = new EventMapBuilder <object>();
mapBuilder.Map <ProductDiscontinuedEvent>().As((@event, context) =>
{
involvedKey = @event.ProductKey;
return(Task.FromResult(0));
});
map = mapBuilder.Build(new ProjectorMap <object>
{
Custom = (context, projector) => projector()
});
});
When(async() =>
{
await map.Handle(
new ProductDiscontinuedEvent
{
ProductKey = "c350E"
},
new object());
});
}
public When_deleting_a_non_existing_event_should_be_handled_manually_from_context()
{
Given(() =>
{
var mapBuilder = new EventMapBuilder <ProductCatalogEntry, string, ProjectionContext>();
mapBuilder
.Map <ProductDiscontinuedEvent>()
.AsDeleteOf((e, context) => context.EventHeaders["ProductId"] as string)
.HandlingMissesUsing((key, context) =>
{
missedKey = key;
});
map = mapBuilder.Build(new ProjectorMap <ProductCatalogEntry, string, ProjectionContext>
{
Delete = (key, context) => Task.FromResult(false)
});
});
WhenLater(async() =>
{
await map.Handle(
new ProductDiscontinuedEvent
{
ProductKey = "c350E"
},
new ProjectionContext()
{
EventHeaders = new Dictionary <string, object>(1)
{
{ "ProductId", "1234" }
}
});
});
}
public When_a_condition_is_met()
{
Given(() =>
{
var mapBuilder = new EventMapBuilder <object>();
mapBuilder
.Map <ProductAddedToCatalogEvent>()
.When(e => e.Category == "Hybrids")
.As((e, ctx) =>
{
involvedKey = e.ProductKey;
return(Task.FromResult(0));
});
map = mapBuilder.Build(new ProjectorMap <object>
{
Custom = (context, projector) => projector()
});
});
When(async() =>
{
await map.Handle(
new ProductAddedToCatalogEvent
{
Category = "Hybrids",
ProductKey = "c350E"
},
new object());
});
}
public When_a_condition_is_not_met()
{
Given(() =>
{
var mapBuilder = new EventMapBuilder <object>();
mapBuilder.Map <ProductAddedToCatalogEvent>()
.When(e => e.Category == "Electric")
.As((e, ctx) =>
{
projection.Category = e.Category;
return(Task.FromResult(0));
});
mapBuilder.HandleCustomActionsAs((context, projector) =>
{
throw new InvalidOperationException("Custom action should not be called.");
});
map = mapBuilder.Build();
});
When(async() =>
{
await map.Handle(
new ProductAddedToCatalogEvent
{
Category = "Hybrids",
ProductKey = "c350E"
},
new object());
});
}
public DomainProjector(IEventMap <ProjectionContext> map, IEnumerable <Projector>?children = null)
{
Projector = new Projector(map, children)
{
ShouldRetry = ShouldRetry
};
}
public void RunAggregateProjection(IActorRef repository)
{
EventMap = EventMapBuilder.Build(ProjectorMap);
var projector = ActorSystem.ActorOf(Props.Create(() => new ProjectorManager <TJournal, TProjectionContext, TProjection, TProjectionId>(repository, EventMap, Journal)), "PersistentIdStream");
projector.Tell(new BeginProjection());
}
public When_an_updating_event_should_ignore_missing_projections()
{
Given(() =>
{
var mapBuilder = new EventMapBuilder <ProductCatalogEntry, string, ProjectionContext>();
mapBuilder
.Map <ProductAddedToCatalogEvent>()
.AsUpdateOf(e => e.ProductKey)
.IgnoringMisses()
.Using((p, e, ctx) =>
{
p.Category = e.Category;
return(Task.FromResult(0));
});
map = mapBuilder.Build(new ProjectorMap <ProductCatalogEntry, string, ProjectionContext>
{
Update = (key, context, projector, createIfMissing) => Task.FromResult(false)
});
});
WhenLater(async() =>
{
await map.Handle(
new ProductAddedToCatalogEvent
{
Category = "Hybrids",
ProductKey = "c350E"
},
new ProjectionContext());
});
}
public EntityFrameworkEventMapConfigurator(
IEventMapBuilder <TProjection, TKey, EntityFrameworkProjectionContext> eventMapBuilder,
Action <TProjection, TKey> setIdentity)
{
_setIdentity = setIdentity ?? throw new ArgumentNullException(nameof(setIdentity));
_eventMapBuilder = eventMapBuilder ?? throw new ArgumentNullException(nameof(eventMapBuilder));
_eventMap = BuildEventMap(eventMapBuilder);
}
public PaymentProjection(IEventSourcing eventSourcing)
{
_eventSourcing = eventSourcing;
_events = new Dictionary <Guid, PaymentModel>();
_map = CreatePaymentEventMap()
.BuildBalanceMap();
}
public InnerProjector(IEventMap <ProjectionContext> map, IEnumerable <InnerProjector> children = null)
{
_map = map;
_children = children?.ToList() ?? new List <InnerProjector>();
if (_children.Contains(null))
{
throw new ArgumentException("There is null child projector.", nameof(children));
}
}
public AggregateEventStream(
IActorRef repository,
IEventMap <TProjectionContext> eventMap,
TJournal journal)
{
_journal = journal;
_eventMap = eventMap;
_repository = repository;
Receive <BeginAggregateEventStream>(Handle);
}
public void SetUp()
{
var dispatcher = new EventDispatcherWithCommandProcessing(new CommandBinder());
var provider = new EventMapProvider
{
Dispatcher = dispatcher
};
_dispatcher = dispatcher;
_map = provider.TakeInstance(this, null);
}
public ProjectorManager(
IActorRef repository,
IEventMap <TProjectionContext> eventMap,
TJournal journal)
{
_journal = journal;
_repository = repository;
_eventMap = eventMap;
Receive <BeginProjection>(Handle);
Receive <ReportAggregateId>(Handle);
}
public NHibernateEventMapConfigurator(
IEventMapBuilder <TProjection, TKey, NHibernateProjectionContext> mapBuilder,
IEnumerable <INHibernateChildProjector> children = null)
{
if (mapBuilder == null)
{
throw new ArgumentNullException(nameof(mapBuilder));
}
map = BuildMap(mapBuilder);
this.children = children?.ToList() ?? new List <INHibernateChildProjector>();
}
public RavenEventMapConfigurator(
IEventMapBuilder <TProjection, string, RavenProjectionContext> mapBuilder,
IEnumerable <IRavenChildProjector> children = null)
{
if (mapBuilder == null)
{
throw new ArgumentNullException(nameof(mapBuilder));
}
map = BuildMap(mapBuilder);
this.children = children?.ToList() ?? new List <IRavenChildProjector>();
}
public When_a_condition_is_not_met_on_a_projection()
{
Given(() =>
{
var mapBuilder = new EventMapBuilder <ProductCatalogEntry, string, ProjectionContext>();
mapBuilder.HandleProjectionModificationsAs(async(key, context, projector, options) =>
{
projection = new ProductCatalogEntry
{
Id = key,
};
await projector(projection);
});
mapBuilder
.Map <ProductAddedToCatalogEvent>()
.When(e => e.Category == "Electric")
.AsUpdateOf(e => e.ProductKey)
.Using((p, e, ctx) =>
{
p.Category = e.Category;
return(Task.FromResult(0));
});
mapBuilder.HandleProjectionDeletionsAs((key, context, options) =>
{
throw new InvalidOperationException("Deletion should not be called.");
});
mapBuilder.HandleCustomActionsAs((context, projector) =>
{
throw new InvalidOperationException("Custom action should not be called.");
});
map = mapBuilder.Build();
});
When(async() =>
{
await map.Handle(
new ProductAddedToCatalogEvent
{
Category = "Hybrids",
ProductKey = "c350E"
},
new ProjectionContext());
});
}
public When_an_event_is_mapped_as_a_create_if_does_not_exist()
{
Given(() =>
{
var mapBuilder = new EventMapBuilder <ProductCatalogEntry, string, ProjectionContext>();
mapBuilder
.Map <ProductAddedToCatalogEvent>()
.AsCreateIfDoesNotExistOf(e => e.ProductKey)
.Using((p, e, ctx) =>
{
p.Category = e.Category;
return(Task.FromResult(0));
});
mapBuilder.HandleProjectionModificationsAs(async(key, context, projector, options) =>
{
projection = new ProductCatalogEntry
{
Id = key,
};
this.options = options;
await projector(projection);
});
mapBuilder.HandleProjectionDeletionsAs((key, context, options) =>
{
throw new InvalidOperationException("Deletion should not be called.");
});
mapBuilder.HandleCustomActionsAs((context, projector) =>
{
throw new InvalidOperationException("Custom action should not be called.");
});
map = mapBuilder.Build();
});
When(async() =>
{
await map.Handle(
new ProductAddedToCatalogEvent
{
Category = "Hybrids",
ProductKey = "c350E"
},
new ProjectionContext());
});
}
//protected Source<EventEnvelope, NotUsed> EventStream { get; set; }
public Projector(
string id,
IActorRef repositoryRef,
IEventMap <TProjectionContext> eventMap)
{
Id = id;
EventMap = eventMap;
//this probably needs to be sent the stream reference so that this actor can sink the stream and start processing the messages
// from the journal, the wierd thing here is the stream can be either from tags or from actual persistence ids (aggregate or saga Ids)
Receive <CreateProjectorSchema>(Handle);
Receive <BeginProjectorStream>(Handle);
Receive <ClearProjectorSchema>(Handle);
Receive <DropProjectorSchema>(Handle);
ReceiveAsync <ProjectEvent <TProjectionContext> >(Handle);
}
public When_a_creating_event_should_allow_manual_handling_of_duplicates()
{
Given(() =>
{
var mapBuilder = new EventMapBuilder <ProductCatalogEntry, string, ProjectionContext>();
mapBuilder
.Map <ProductAddedToCatalogEvent>()
.AsCreateOf(e => e.ProductKey)
.HandlingDuplicatesUsing((duplicate, @event, context) =>
{
duplicateProjection = existingProjection;
return(true);
})
.Using((p, e, ctx) =>
{
p.Category = e.Category;
return(Task.FromResult(0));
});
existingProjection = new ProductCatalogEntry
{
Id = "c350E",
Category = "OldCategory",
};
map = mapBuilder.Build(new ProjectorMap <ProductCatalogEntry, string, ProjectionContext>
{
Create = async(key, context, projector, shouldOverwrite) =>
{
if (shouldOverwrite(existingProjection))
{
await projector(existingProjection);
}
}
});
});
When(async() =>
{
await map.Handle(new ProductAddedToCatalogEvent
{
Category = "NewCategory",
ProductKey = "c350E"
},
new ProjectionContext());
});
}
public Projector(IEventMapBuilder <ProjectionContext> eventMapBuilder, IEnumerable <Projector> children = null)
{
if (eventMapBuilder == null)
{
throw new ArgumentNullException(nameof(eventMapBuilder));
}
SetupHandlers(eventMapBuilder);
map = eventMapBuilder.Build();
this.children = children?.ToList() ?? new List <Projector>();
if (this.children.Contains(null))
{
throw new ArgumentException("There is null child projector.", nameof(children));
}
}
public When_a_creating_event_must_ignore_an_existing_projection()
{
Given(() =>
{
var mapBuilder = new EventMapBuilder <ProductCatalogEntry, string, ProjectionContext>();
mapBuilder
.Map <ProductAddedToCatalogEvent>()
.AsCreateOf(e => e.ProductKey).IgnoringDuplicates()
.Using((p, e, ctx) =>
{
p.Category = e.Category;
return(Task.FromResult(0));
});
existingProjection = new ProductCatalogEntry
{
Id = "c350E",
Category = "Fosile",
};
map = mapBuilder.Build(new ProjectorMap <ProductCatalogEntry, string, ProjectionContext>
{
Create = async(key, context, projector, shouldOverwrite) =>
{
if (shouldOverwrite(existingProjection))
{
await projector(existingProjection);
}
}
});
});
When(async() =>
{
await map.Handle(
new ProductAddedToCatalogEvent
{
Category = "Hybrids",
ProductKey = "c350E"
},
new ProjectionContext());
});
}
public When_an_updating_event_should_create_a_missing_projection_from_context()
{
Given(() =>
{
var mapBuilder = new EventMapBuilder <ProductCatalogEntry, string, ProjectionContext>();
mapBuilder
.Map <ProductAddedToCatalogEvent>()
.AsUpdateOf((e, context) => context.EventHeaders["ProductId"] as string)
.CreatingIfMissing()
.Using((p, e, ctx) =>
{
p.Category = e.Category;
return(Task.FromResult(0));
});
map = mapBuilder.Build(new ProjectorMap <ProductCatalogEntry, string, ProjectionContext>
{
Update = (key, context, projector, createIfMissing) =>
{
shouldCreate = true;
return(Task.FromResult(0));
}
});
});
When(async() =>
{
await map.Handle(
new ProductAddedToCatalogEvent
{
Category = "Hybrids",
ProductKey = "c350E"
},
new ProjectionContext()
{
EventHeaders = new Dictionary <string, object>(1)
{
{ "ProductId", "1234" }
}
});
});
}
public When_an_event_is_mapped_as_a_custom_action_on_a_projection()
{
Given(() =>
{
var mapBuilder = new EventMapBuilder <ProductCatalogEntry, string, ProjectionContext>();
mapBuilder.HandleCustomActionsAs((context, projector) =>
{
customActionDecoratorExecuted = true;
return(projector());
});
mapBuilder.HandleProjectionModificationsAs((key, context, projector, options) =>
{
throw new InvalidOperationException("Modification should not be called.");
});
mapBuilder.HandleProjectionDeletionsAs((key, context, options) =>
{
throw new InvalidOperationException("Deletion should not be called.");
});
mapBuilder.Map <ProductDiscontinuedEvent>().As((@event, context) =>
{
involvedKey = @event.ProductKey;
return(Task.FromResult(0));
});
map = mapBuilder.Build();
});
When(async() =>
{
await map.Handle(
new ProductDiscontinuedEvent
{
ProductKey = "c350E"
},
new ProjectionContext());
});
}
public When_an_event_is_mapped_as_a_delete_if_exists()
{
Given(() =>
{
var mapBuilder = new EventMapBuilder <ProductCatalogEntry, string, ProjectionContext>();
mapBuilder.Map <ProductDiscontinuedEvent>().AsDeleteIfExistsOf(e => e.ProductKey);
mapBuilder.HandleProjectionDeletionsAs((key, context, options) =>
{
projection = new ProductCatalogEntry
{
Id = key,
Deleted = true
};
this.options = options;
return(Task.FromResult(0));
});
mapBuilder.HandleProjectionModificationsAs((key, context, projector, options) =>
{
throw new InvalidOperationException("Modification should not be called.");
});
mapBuilder.HandleCustomActionsAs((context, projector) =>
{
throw new InvalidOperationException("Custom action should not be called.");
});
map = mapBuilder.Build();
});
When(async() =>
{
await map.Handle(
new ProductDiscontinuedEvent
{
ProductKey = "c350E"
},
new ProjectionContext());
});
}
public When_a_global_filter_is_not_met()
{
Given(() =>
{
var mapBuilder = new EventMapBuilder <object>()
.Where((@event, context) =>
{
if (@event is ProductAddedToCatalogEvent addedEvent)
{
return(Task.FromResult(addedEvent.Category == "Electric"));
}
return(Task.FromResult(true));
});
mapBuilder
.Map <ProductAddedToCatalogEvent>()
.As((e, ctx) =>
{
involvedKey = e.ProductKey;
return(Task.FromResult(0));
});
map = mapBuilder.Build(new ProjectorMap <object>
{
Custom = (context, projector) => projector()
});
});
When(async() =>
{
await map.Handle(
new ProductAddedToCatalogEvent
{
Category = "Hybrids",
ProductKey = "c350E"
},
new object());
});
}
public When_event_should_create_a_new_projection_from_context()
{
Given(() =>
{
var mapBuilder = new EventMapBuilder <ProductCatalogEntry, string, ProjectionContext>();
mapBuilder.Map <ProductAddedToCatalogEvent>().AsCreateOf((e, context) => context.EventHeaders["ProductId"] as string).Using((p, e, ctx) =>
{
p.Category = e.Category;
return(Task.FromResult(0));
});
map = mapBuilder.Build(new ProjectorMap <ProductCatalogEntry, string, ProjectionContext>
{
Create = async(key, context, projector, shouldOverwrite) =>
{
projection = new ProductCatalogEntry
{
Id = key,
};
await projector(projection);
}
});
});
When(async() =>
{
await map.Handle(new ProductAddedToCatalogEvent
{
Category = "Hybrids"
},
new ProjectionContext()
{
EventHeaders = new Dictionary <string, object>(1)
{
{ "ProductId", "1234" }
}
});
});
}
public When_an_updating_event_should_throw_on_misses()
{
Given(() =>
{
var mapBuilder = new EventMapBuilder <ProductCatalogEntry, string, ProjectionContext>();
mapBuilder.Map <ProductAddedToCatalogEvent>().AsUpdateOf(e => e.ProductKey).Using((p, e, ctx) =>
{
p.Category = e.Category;
return(Task.FromResult(0));
});
existingProjection = new ProductCatalogEntry
{
Id = "c350E",
Category = "OldCategory",
};
map = mapBuilder.Build(new ProjectorMap <ProductCatalogEntry, string, ProjectionContext>
{
Update = async(key, context, projector, createIfMissing) =>
{
if (createIfMissing())
{
await projector(existingProjection);
}
}
});
});
WhenLater(async() =>
{
await map.Handle(
new ProductAddedToCatalogEvent
{
ProductKey = "c350E",
Category = "NewCategory"
},
new ProjectionContext());
});
}
public BalanceProjection(IStreamStore streamStore, StreamId streamId)
{
var mapBuilder = new EventMapBuilder <Balance>();
mapBuilder.Map <Deposited>().As((deposited, balance) =>
{
balance.Add(deposited.Amount);
});
mapBuilder.Map <Withdrawn>().As((withdrawn, balance) =>
{
balance.Subtract(withdrawn.Amount);
});
_map = mapBuilder.Build(new ProjectorMap <Balance>()
{
Custom = (context, projector) => projector()
});
streamStore.SubscribeToStream(streamId, null, StreamMessageReceived);
}
public void runBeforeEachTest()
{
eventDispatcher = new EventDispatcher();
eventMap = new EventMap();
}
