public async Task StartFromTimeAsync(bool useContinuations)
{
int numItems = 100;
IDocumentContainer documentContainer = await CreateDocumentContainerAsync(numItems);
CrossPartitionChangeFeedAsyncEnumerator enumerator = CrossPartitionChangeFeedAsyncEnumerator.Create(
documentContainer,
new CrossFeedRangeState<ChangeFeedState>(
new FeedRangeState<ChangeFeedState>[]
{
new FeedRangeState<ChangeFeedState>(FeedRangeEpk.FullRange, ChangeFeedState.Time(DateTime.UtcNow))
}),
ChangeFeedPaginationOptions.Default,
cancellationToken: default);
for (int i = 0; i < numItems; i++)
{
// Insert an item
CosmosObject item = CosmosObject.Parse($"{{\"pk\" : {i} }}");
while (true)
{
TryCatch<Record> monadicCreateRecord = await documentContainer.MonadicCreateItemAsync(item, cancellationToken: default);
if (monadicCreateRecord.Succeeded)
{
break;
}
}
}
(int globalCount, double _) = await (useContinuations
? DrainWithUntilNotModifiedWithContinuationTokens(documentContainer, enumerator)
: DrainUntilNotModifedAsync(enumerator));
Assert.AreEqual(numItems, globalCount);
}
public static ChangeFeedCrossFeedRangeState CreateFromTime(DateTime dateTimeUtc, FeedRange feedRange)
{
if (!(feedRange is FeedRangeInternal feedRangeInternal))
{
throw new ArgumentException($"{nameof(feedRange)} needs to be a {nameof(FeedRangeInternal)}.");
}
return(new ChangeFeedCrossFeedRangeState(
new List <FeedRangeState <ChangeFeedState> >()
{
new FeedRangeState <ChangeFeedState>(feedRangeInternal, ChangeFeedState.Time(dateTimeUtc))
}));
}
public void Time()
{
DateTime startTime = DateTime.MinValue.ToUniversalTime();
ChangeFeedState time = ChangeFeedState.Time(startTime);
CosmosElement cosmosElement = ChangeFeedStateCosmosElementSerializer.ToCosmosElement(time);
TryCatch <ChangeFeedState> monadicState = ChangeFeedStateCosmosElementSerializer.MonadicFromCosmosElement(cosmosElement);
Assert.IsTrue(monadicState.Succeeded);
if (!(monadicState.Result is ChangeFeedStateTime stateTime))
{
Assert.Fail();
return;
}
Assert.AreEqual(stateTime.StartTime, startTime);
}