public IStreamSubscription Create(
ConsumerGroup consumerGroup,
SubscriptionStartOptions startOptions,
ProcessEventsHandler eventsHandler)
{
var builder = containerProvider
.GetStreamContainer()
.GetChangeFeedProcessorBuilder <EventDocument>(
GetProcessorName(consumerGroup),
(c, ct) => eventsHandler(c.Where(ExcludeMetaDataChanges).ToArray(), ct))
.WithLeaseContainer(containerProvider.GetSubscriptionContainer())
.WithMaxItems(100)
.WithPollInterval(TimeSpan.FromMilliseconds(1000));
if (startOptions == SubscriptionStartOptions.FromBegining)
{
// Instruct processor to start from beginning.
// see https://docs.microsoft.com/en-us/azure/cosmos-db/change-feed-processor#reading-from-the-beginning
builder.WithStartTime(DateTime.MinValue.ToUniversalTime());
}
if (!string.IsNullOrEmpty(consumerGroup.Instance))
{
builder.WithInstanceName(consumerGroup.Instance);
}
return(new CosmosSubscriptionProcessor(
telemetry,
builder.Build(),
consumerGroup));
}
public IStreamSubscription SubscribeToStreams(
ConsumerGroup consumerGroup,
SubscriptionStartOptions startOptions,
ProcessEventsHandler eventsHandler)
=> subscriptionFactory
.Create(
Arguments.EnsureNotNull(consumerGroup, nameof(consumerGroup)),
startOptions,
Arguments.EnsureNotNull(eventsHandler, nameof(eventsHandler)));
IStreamSubscription IStreamSubscriptionFactory.Create(
ConsumerGroup consumerGroup,
SubscriptionStartOptions startOptions,
ProcessEventsHandler eventsHandler)
=> throw new NotImplementedException();
