public override void Visit(ChangeFeedStartFromContinuationAndFeedRange startFromContinuationAndFeedRange)
{
// On REST level, change feed is using IfNoneMatch/ETag instead of continuation
if (startFromContinuationAndFeedRange.Etag != null)
{
this.requestMessage.Headers.IfNoneMatch = startFromContinuationAndFeedRange.Etag;
}
}
public override void Visit(ChangeFeedStartFromContinuationAndFeedRange startFromContinuationAndFeedRange)
{
// On REST level, change feed is using IfNoneMatch/ETag instead of continuation
if (startFromContinuationAndFeedRange.Etag != null)
{
this.requestMessage.Headers.IfNoneMatch = startFromContinuationAndFeedRange.Etag;
}
startFromContinuationAndFeedRange.FeedRange.Accept(FeedRangeRequestMessagePopulatorVisitor.Singleton, this.requestMessage);
}
public static ChangeFeedPartitionKeyResultSetIteratorCore Create(
DocumentServiceLease lease,
string continuationToken,
int?maxItemCount,
ContainerInternal container,
DateTime?startTime,
bool startFromBeginning)
{
// If the lease represents a full partition (old schema) then use a FeedRangePartitionKeyRange
// If the lease represents an EPK range (new schema) the use the FeedRange in the lease
FeedRangeInternal feedRange = lease is DocumentServiceLeaseCoreEpk ? lease.FeedRange : new FeedRangePartitionKeyRange(lease.CurrentLeaseToken);
ChangeFeedStartFrom startFrom;
if (continuationToken != null)
{
// For continuation based feed range we need to manufactor a new continuation token that has the partition key range id in it.
startFrom = new ChangeFeedStartFromContinuationAndFeedRange(continuationToken, feedRange);
}
else if (startTime.HasValue)
{
startFrom = ChangeFeedStartFrom.Time(startTime.Value, feedRange);
}
else if (startFromBeginning)
{
startFrom = ChangeFeedStartFrom.Beginning(feedRange);
}
else
{
startFrom = ChangeFeedStartFrom.Now(feedRange);
}
ChangeFeedRequestOptions requestOptions = new ChangeFeedRequestOptions()
{
PageSizeHint = maxItemCount,
};
return(new ChangeFeedPartitionKeyResultSetIteratorCore(
container: container,
changeFeedStartFrom: startFrom,
options: requestOptions));
}
public override TryCatch <ChangeFeedCrossFeedRangeState> Visit(ChangeFeedStartFromContinuationAndFeedRange startFromContinuationAndFeedRange)
{
throw new NotSupportedException();
}
public abstract Task <TResult> VisitAsync(
ChangeFeedStartFromContinuationAndFeedRange startFromContinuationAndFeedRange,
TInput input,
CancellationToken cancellationToken);
public override FeedRange Visit(ChangeFeedStartFromContinuationAndFeedRange startFromContinuationAndFeedRange) => startFromContinuationAndFeedRange.FeedRange;
public override FeedRange Visit(ChangeFeedStartFromContinuationAndFeedRange startFromContinuationAndFeedRange)
{
return(startFromContinuationAndFeedRange.FeedRange);
}