protected override bool ShouldSend(Document item, out string reason, out Exception exception, out Document result)
{
exception = null;
reason = null;
result = item;
if (Fetcher.FetchingFrom == SubscriptionFetcher.FetchingOrigin.Storage)
{
var conflictStatus = ChangeVectorUtils.GetConflictStatus(
remoteAsString: item.ChangeVector,
localAsString: SubscriptionState.ChangeVectorForNextBatchStartingPoint);
if (conflictStatus == ConflictStatus.AlreadyMerged)
{
reason = $"{item.Id} is already merged";
return(false);
}
if (SubscriptionConnectionsState.IsDocumentInActiveBatch(ClusterContext, item.Id, Active))
{
reason = $"{item.Id} exists in an active batch";
return(false);
}
}
if (Fetcher.FetchingFrom == SubscriptionFetcher.FetchingOrigin.Resend)
{
var current = Database.DocumentsStorage.GetDocumentOrTombstone(DocsContext, item.Id, throwOnConflict: false);
if (ShouldFetchFromResend(item.Id, current, item.ChangeVector) == false)
{
item.ChangeVector = string.Empty;
reason = $"Skip {item.Id} from resend";
return(false);
}
Debug.Assert(current.Document != null, "Document does not exist");
result.Id = current.Document.Id; // use proper casing
result.Data = current.Document.Data;
result.Etag = current.Document.Etag;
result.ChangeVector = current.Document.ChangeVector;
}
if (Patch == null)
{
return(true);
}
try
{
InitializeScript();
var match = Patch.MatchCriteria(Run, DocsContext, item, ProjectionMetadataModifier.Instance, ref result.Data);
if (match == false)
{
if (Fetcher.FetchingFrom == SubscriptionFetcher.FetchingOrigin.Resend)
{
ItemsToRemoveFromResend.Add(item.Id);
}
result.Data = null;
reason = $"{item.Id} filtered out by criteria";
return(false);
}
return(true);
}
catch (Exception ex)
{
exception = ex;
reason = $"Criteria script threw exception for document id {item.Id}";
return(false);
}
}
