public async Task StandByFeedIterator_NoFetchNext()
{
int pkRangesCount = (await this.Container.ClientContext.DocumentClient.ReadPartitionKeyRangeFeedAsync(this.Container.LinkUri)).Count;
int expected = 25;
int iterations = 0;
await this.CreateRandomItems(this.Container, expected, randomPartitionKey : true);
ContainerInternal itemsCore = this.Container;
string continuationToken = null;
int count = 0;
while (true)
{
StandByFeedIteratorRequestOptions requestOptions = new StandByFeedIteratorRequestOptions()
{
StartTime = DateTime.MinValue
};
using FeedIterator feedIterator = itemsCore.GetStandByFeedIterator(continuationToken, requestOptions: requestOptions);
using (ResponseMessage responseMessage =
await feedIterator.ReadNextAsync(this.cancellationToken))
{
continuationToken = responseMessage.Headers.ContinuationToken;
Assert.AreEqual(responseMessage.ContinuationToken, responseMessage.Headers.ContinuationToken);
if (responseMessage.IsSuccessStatusCode)
{
Collection <ToDoActivity> response = TestCommon.SerializerCore.FromStream <CosmosFeedResponseUtil <ToDoActivity> >(responseMessage.Content).Data;
count += response.Count;
}
}
if (count > expected)
{
Assert.Fail($"{count} does not equal {expected}");
}
if (count.Equals(expected))
{
break;
}
if (iterations++ > pkRangesCount)
{
Assert.Fail("Feed does not contain all elements even after looping through PK ranges. Either the continuation is not moving forward or there is some state problem.");
}
}
}
internal override Task <ResponseMessage> NextResultSetDelegateAsync(
string continuationToken,
string partitionKeyRangeId,
int?maxItemCount,
StandByFeedIteratorRequestOptions options,
CancellationToken cancellationToken)
{
if (this.Iteration++ == 0)
{
ResponseMessage httpResponse = new ResponseMessage(System.Net.HttpStatusCode.Gone);
httpResponse.Headers.Add(Documents.WFConstants.BackendHeaders.SubStatus, ((uint)Documents.SubStatusCodes.PartitionKeyRangeGone).ToString(CultureInfo.InvariantCulture));
return(Task.FromResult(httpResponse));
}
return(Task.FromResult(new ResponseMessage(System.Net.HttpStatusCode.NotModified)));
}
internal StandByFeedIteratorCore(
CosmosClientContext clientContext,
ContainerInternal container,
string continuationToken,
int?maxItemCount,
StandByFeedIteratorRequestOptions options)
{
if (container == null)
{
throw new ArgumentNullException(nameof(container));
}
this.clientContext = clientContext;
this.container = container;
this.changeFeedOptions = options;
this.maxItemCount = maxItemCount;
this.continuationToken = continuationToken;
}
internal virtual Task <ResponseMessage> NextResultSetDelegateAsync(
string continuationToken,
string partitionKeyRangeId,
int?maxItemCount,
StandByFeedIteratorRequestOptions options,
ITrace trace,
CancellationToken cancellationToken)
{
string resourceUri = this.container.LinkUri;
return(this.clientContext.ProcessResourceOperationAsync <ResponseMessage>(
resourceUri: resourceUri,
resourceType: Documents.ResourceType.Document,
operationType: Documents.OperationType.ReadFeed,
requestOptions: options,
containerInternal: this.container,
requestEnricher: request =>
{
if (!string.IsNullOrWhiteSpace(continuationToken))
{
// On REST level, change feed is using IfNoneMatch/ETag instead of continuation
request.Headers.IfNoneMatch = continuationToken;
}
if (maxItemCount.HasValue)
{
request.Headers.PageSize = maxItemCount.Value.ToString(CultureInfo.InvariantCulture);
}
if (!string.IsNullOrEmpty(partitionKeyRangeId))
{
request.PartitionKeyRangeId = new PartitionKeyRangeIdentity(partitionKeyRangeId);
}
},
responseCreator: response => response,
partitionKey: null,
streamPayload: null,
diagnosticsContext: null,
trace: trace,
cancellationToken: cancellationToken));
}
internal CosmosChangeFeedResultSetIteratorCoreMock(
ContainerInternal container,
string continuationToken,
int?maxItemCount,
StandByFeedIteratorRequestOptions options) : base(
clientContext: container.ClientContext,
container: container,
continuationToken: continuationToken,
maxItemCount: maxItemCount,
options: options)
{
List <CompositeContinuationToken> compositeContinuationTokens = new List <CompositeContinuationToken>()
{
new CompositeContinuationToken()
{
Token = null,
Range = new Documents.Routing.Range <string>("A", "B", true, false)
}
};
string serialized = JsonConvert.SerializeObject(compositeContinuationTokens);
this.compositeContinuationToken = StandByFeedContinuationToken.CreateAsync("containerRid", serialized, (string containerRid, Documents.Routing.Range <string> ranges, bool forceRefresh) =>
{
IReadOnlyList <Documents.PartitionKeyRange> filteredRanges = new List <Documents.PartitionKeyRange>()
{
new Documents.PartitionKeyRange()
{
MinInclusive = "A", MaxExclusive = "B", Id = "0"
}
};
if (forceRefresh)
{
this.HasCalledForceRefresh = true;
}
return(Task.FromResult(filteredRanges));
}).Result;
}