public IUpdateStream <TDocument> Subscribe(UpdateStreamFilter updateStreamFilter,
CancellationToken cancellationToken = default)
{
var updateStream = new UpdateStream <TDocument>();
PipelineDefinition <ChangeStreamDocument <TDocument>, ChangeStreamDocument <TDocument> > pipeline =
new EmptyPipelineDefinition <ChangeStreamDocument <TDocument> >();
pipeline = pipeline.Match(x =>
x.OperationType == ChangeStreamOperationType.Update &&
updateStreamFilter.UpdateTypes.HasFlag(UpdateTypes.Update) ||
x.OperationType == ChangeStreamOperationType.Insert &&
updateStreamFilter.UpdateTypes.HasFlag(UpdateTypes.Insert) ||
x.OperationType == ChangeStreamOperationType.Delete &&
updateStreamFilter.UpdateTypes.HasFlag(UpdateTypes.Delete) ||
x.OperationType == ChangeStreamOperationType.Replace &&
updateStreamFilter.UpdateTypes.HasFlag(UpdateTypes.Replace) ||
updateStreamFilter.UpdateTypes == UpdateTypes.Undefined
);
if (updateStreamFilter.RtId.HasValue)
{
var filter = Builders <ChangeStreamDocument <TDocument> > .Filter.Eq("fullDocument." + Constants.IdField, updateStreamFilter.RtId.Value.ToObjectId());
pipeline = pipeline.Match(filter);
}
updateStream.Watch(_documentCollection, pipeline, cancellationToken);
return(updateStream);
}
private IObservable <object> Subscribe(IResolveEventStreamContext context)
{
var messageHandlingContext = (MessageHandlingContext)context.UserContext;
var tenantContext = messageHandlingContext.Get <ITenantContext>(Statics.TenantContext);
var ckId = context.FieldDefinition.GetMetadata <string>(Statics.CkId);
var rtId = context.GetArgument <OspObjectId?>(Statics.RtIdArg, null);
var updateTypeDtoList = context.GetArgument <ICollection <UpdateTypesDto> >(Statics.UpdateTypesArg);
UpdateTypes updateType = UpdateTypes.Undefined;
foreach (var updateTypeDto in updateTypeDtoList)
{
updateType |= (UpdateTypes)updateTypeDto;
}
var updateStreamFilter = new UpdateStreamFilter
{
UpdateTypes = updateType,
RtId = rtId
};
var messages = tenantContext.Repository.SubscribeToRtEntities(ckId, updateStreamFilter, context.CancellationToken);
var observable = messages.GetUpdates().Select(x => new DynamicUpdateMessageDto <RtEntityUpdateItemDto>
{
Items = new List <RtEntityUpdateItemDto>
{
new RtEntityUpdateItemDto
{
UserContext = x.Document, UpdateState = (UpdateTypesDto)x.UpdateType
}
}
});
return(observable);
}
