public static bool IsStreamDeletedEventOrLinkToStreamDeletedEvent(ResolvedEvent resolvedEvent,
ReadEventResult resolveResult, out string deletedPartitionStreamId)
{
bool isDeletedStreamEvent;
// If the event didn't resolve, we can't rely on it as a deleted event
if (resolveResult != ReadEventResult.Success)
{
deletedPartitionStreamId = null;
return(false);
}
if (resolvedEvent.IsLinkToDeletedStreamTombstone)
{
isDeletedStreamEvent = true;
deletedPartitionStreamId = resolvedEvent.EventStreamId;
}
else
{
isDeletedStreamEvent = StreamDeletedHelper.IsStreamDeletedEvent(
resolvedEvent.EventStreamId, resolvedEvent.EventType, resolvedEvent.Data,
out deletedPartitionStreamId);
}
return(isDeletedStreamEvent);
}
public static bool IsStreamDeletedEvent(ResolvedEvent resolvedEvent, out string deletedPartitionStreamId)
{
bool isDeletedStreamEvent;
if (resolvedEvent.IsLinkToDeletedStreamTombstone)
{
isDeletedStreamEvent = true;
deletedPartitionStreamId = resolvedEvent.EventStreamId;
}
else
{
isDeletedStreamEvent = StreamDeletedHelper.IsStreamDeletedEvent(
resolvedEvent.EventStreamId, resolvedEvent.EventType, resolvedEvent.Data,
out deletedPartitionStreamId);
}
return(isDeletedStreamEvent);
}
public bool ProcessEvent(
string partition, CheckpointTag eventPosition, string category1, ResolvedEvent data,
out string newState, out string newSharedState, out EmittedEventEnvelope[] emittedEvents)
{
newSharedState = null;
emittedEvents = null;
newState = null;
if (data.EventStreamId != data.PositionStreamId)
{
return(false);
}
var indexedEventType = data.EventType;
if (indexedEventType == "$>")
{
return(false);
}
string positionStreamId;
var isStreamDeletedEvent = StreamDeletedHelper.IsStreamDeletedEvent(
data.PositionStreamId, data.EventType, data.Data, out positionStreamId);
if (isStreamDeletedEvent)
{
indexedEventType = "$deleted";
}
emittedEvents = new[]
{
new EmittedEventEnvelope(
new EmittedDataEvent(
_indexStreamPrefix + indexedEventType, Guid.NewGuid(), "$>", false,
data.EventSequenceNumber + "@" + positionStreamId,
isStreamDeletedEvent
? new ExtraMetaData(new Dictionary <string, JRaw> {
{ "$deleted", new JRaw(-1) }
})
: null, eventPosition, expectedTag: null))
};
return(true);
}
public bool ProcessEvent(
string partition, CheckpointTag eventPosition, string category1, ResolvedEvent data,
out string newState, out string newSharedState, out EmittedEventEnvelope[] emittedEvents)
{
newSharedState = null;
emittedEvents = null;
newState = null;
string positionStreamId;
var isStreamDeletedEvent = StreamDeletedHelper.IsStreamDeletedEvent(
data.PositionStreamId, data.EventType, data.Data, out positionStreamId);
var category = _streamCategoryExtractor.GetCategoryByStreamId(positionStreamId);
if (category == null)
{
return(true); // handled but not interesting
}
string linkTarget;
if (data.EventType == SystemEventTypes.LinkTo)
{
linkTarget = data.Data;
}
else
{
linkTarget = data.EventSequenceNumber + "@" + data.EventStreamId;
}
emittedEvents = new[]
{
new EmittedEventEnvelope(
new EmittedLinkToWithRecategorization(
_categoryStreamPrefix + category, Guid.NewGuid(), linkTarget, eventPosition, expectedTag: null,
originalStreamId: positionStreamId, streamDeletedAt: isStreamDeletedEvent ? -1 : (int?)null))
};
return(true);
}
