public override TryCatch <ChangeFeedCrossFeedRangeState> Visit(ChangeFeedStartFromContinuation startFromContinuation)
{
TryCatch <CosmosElement> monadicParsedToken = CosmosElement.Monadic.Parse(startFromContinuation.Continuation);
if (monadicParsedToken.Failed)
{
return(TryCatch <ChangeFeedCrossFeedRangeState> .FromException(
new MalformedChangeFeedContinuationTokenException(
message : $"Failed to parse continuation token: {startFromContinuation.Continuation}.",
innerException : monadicParsedToken.Exception)));
}
return(ChangeFeedCrossFeedRangeState.Monadic.CreateFromCosmosElement(monadicParsedToken.Result));
}
public override void Visit(ChangeFeedStartFromContinuation startFromContinuation)
{
// On REST level, change feed is using IfNoneMatch/ETag instead of continuation
this.requestMessage.Headers.IfNoneMatch = startFromContinuation.Continuation;
}
public abstract Task <TResult> VisitAsync(
ChangeFeedStartFromContinuation startFromContinuation,
TInput input,
CancellationToken cancellationToken);
public override FeedRange Visit(ChangeFeedStartFromContinuation startFromContinuation)
=> throw new NotSupportedException($"{nameof(ChangeFeedStartFromContinuation)} does not have a feed range.");