public async Task ChangeFeedIteratorCore_DeleteAfterCreate()
{
ContainerProperties properties = new ContainerProperties(id: Guid.NewGuid().ToString(), partitionKeyPath: ChangeFeedIteratorCoreTests.PartitionKey);
properties.ChangeFeedPolicy.FullFidelityRetention = TimeSpan.FromMinutes(5);
ContainerResponse response = await this.database.CreateContainerAsync(
properties,
cancellationToken : this.cancellationToken);
ContainerInternal container = (ContainerInternal)response;
// Insert documents and then delete them
int totalDocuments = 50;
IList <ToDoActivity> createdItems = await this.CreateRandomItems(container, totalDocuments, randomPartitionKey : true);
foreach (ToDoActivity item in createdItems)
{
await container.DeleteItemAsync <ToDoActivity>(item.id, new PartitionKey(item.pk));
}
FeedIterator <ToDoActivityWithMetadata> changefeedIterator = container.GetChangeFeedIterator <ToDoActivityWithMetadata>(
ChangeFeedStartFrom.Beginning(),
ChangeFeedMode.Incremental);
while (changefeedIterator.HasMoreResults)
{
FeedResponse <ToDoActivityWithMetadata> feedResponse = await changefeedIterator.ReadNextAsync(this.cancellationToken);
Assert.AreEqual(HttpStatusCode.NotModified, feedResponse.StatusCode, "Incremental Change Feed does not present intermediate results and should return nothing.");
if (feedResponse.StatusCode == HttpStatusCode.NotModified)
{
break;
}
}
}
private static async Task <ItemResponse <TestDoc> > DeleteItemAsync(
ContainerInternal containerCore,
TestDoc testDoc)
{
ItemResponse <TestDoc> deleteResponse = await containerCore.DeleteItemAsync <TestDoc>(
testDoc.Id,
new PartitionKey(testDoc.PK));
Assert.AreEqual(HttpStatusCode.NoContent, deleteResponse.StatusCode);
Assert.IsNull(deleteResponse.Resource);
return(deleteResponse);
}
public async Task ChangeFeedIteratorCore_WithFullFidelity()
{
ContainerProperties properties = new ContainerProperties(id: Guid.NewGuid().ToString(), partitionKeyPath: ChangeFeedIteratorCoreTests.PartitionKey);
properties.ChangeFeedPolicy.FullFidelityRetention = TimeSpan.FromMinutes(5);
ContainerResponse response = await this.database.CreateContainerAsync(
properties,
cancellationToken : this.cancellationToken);
ContainerInternal container = (ContainerInternal)response;
// FF does not work with StartFromBeginning currently, so we capture an initial continuation.
FeedIterator <ToDoActivityWithMetadata> fullFidelityIterator = container.GetChangeFeedIterator <ToDoActivityWithMetadata>(
ChangeFeedStartFrom.Now(),
ChangeFeedMode.FullFidelity);
string initialContinuation = null;
while (fullFidelityIterator.HasMoreResults)
{
try
{
FeedResponse <ToDoActivityWithMetadata> feedResponse = await fullFidelityIterator.ReadNextAsync(this.cancellationToken);
initialContinuation = feedResponse.ContinuationToken;
}
catch (CosmosException cosmosException) when(cosmosException.StatusCode == HttpStatusCode.NotModified)
{
initialContinuation = cosmosException.Headers.ContinuationToken;
break;
}
}
// Insert documents and then delete them
int totalDocuments = 50;
IList <ToDoActivity> createdItems = await this.CreateRandomItems(container, totalDocuments, randomPartitionKey : true);
foreach (ToDoActivity item in createdItems)
{
await container.DeleteItemAsync <ToDoActivity>(item.id, new PartitionKey(item.pk));
}
// Resume Change Feed and verify we pickup all the events
fullFidelityIterator = container.GetChangeFeedIterator <ToDoActivityWithMetadata>(
ChangeFeedStartFrom.ContinuationToken(initialContinuation),
ChangeFeedMode.FullFidelity);
int detectedEvents = 0;
bool hasInserts = false;
bool hasDeletes = false;
while (fullFidelityIterator.HasMoreResults)
{
try
{
FeedResponse <ToDoActivityWithMetadata> feedResponse = await fullFidelityIterator.ReadNextAsync(this.cancellationToken);
foreach (ToDoActivityWithMetadata item in feedResponse)
{
Assert.IsNotNull(item.metadata, "Metadata not present");
Assert.IsNotNull(item.metadata.operationType, "Metadata has no operationType");
hasInserts |= item.metadata.operationType == "create";
hasDeletes |= item.metadata.operationType == "delete";
}
detectedEvents += feedResponse.Count;
}
catch (CosmosException cosmosException) when(cosmosException.StatusCode == HttpStatusCode.NotModified)
{
break;
}
}
Assert.AreEqual(2 * totalDocuments, detectedEvents, "Full Fidelity should include inserts and delete events.");
Assert.IsTrue(hasInserts, "No metadata for create operationType found");
Assert.IsTrue(hasDeletes, "No metadata for delete operationType found");
}