private static async Task ReadFeedJson <TEventHandler>(Container container, TEventHandler eventHandler, int pageSizeHint, string?continuationToken, JsonSerializerOptions options, CancellationToken cancellationToken)
where TEventHandler : IJsonEventFeedHandler
{
var requestOptions = new ChangeFeedRequestOptions {
PageSizeHint = pageSizeHint
};
FeedIterator iterator = container.GetChangeFeedStreamIterator(
continuationToken is null ? ChangeFeedStartFrom.Beginning() : ChangeFeedStartFrom.ContinuationToken(continuationToken),
ChangeFeedMode.Incremental,
requestOptions);
while (iterator.HasMoreResults && !cancellationToken.IsCancellationRequested)
{
using ResponseMessage response = await iterator.ReadNextAsync(cancellationToken).ConfigureAwait(false);
if (cancellationToken.IsCancellationRequested)
{
break;
}
response.EnsureSuccessStatusCode();
CosmosEventStore <TContainerFactory, TSnapshotReader> .ProcessEventFeedStream(eventHandler, response.Content, options.DefaultBufferSize, cancellationToken);
await eventHandler.HandleBatchComplete(response.ContinuationToken).ConfigureAwait(false);
}
}
private static Task ReadFeed(Container container, IEventFeedHandler eventHandler, int pageSizeHint, string?continuationToken, JsonSerializerOptions options, CancellationToken cancallationToken)
{
return(CosmosEventStore <TContainerFactory, TSnapshotReader> .ReadFeedJson(container, new JsonEventFeed.JsonEventFeedHandlerOverJsonSerializer(eventHandler, options), pageSizeHint, continuationToken, options, cancallationToken));
}
/// <summary>
/// Reads an aggregate root.
/// </summary>
/// <typeparam name="TEventHandler">The type of the event reader for the aggregate root. This is an <see cref="IJsonEventFeedHandler"/>.</typeparam>
/// <param name="eventHandler">The event reader capable of decoding and applying the event payloads for this aggregate root.</param>
/// <param name="pageSizeHint">A hint as to the number of items you get in a page of results.</param>
/// <param name="continuationToken">The (optional) continuation token to resume the feed from a particular point.</param>
/// <param name="cancellationToken">The cancellation token to terminate reading the feed.</param>
/// <returns>A <see cref="Task{TResult}"/> which completes when the feed terminates.</returns>
public Task ReadFeedJson <TEventHandler>(TEventHandler eventHandler, int pageSizeHint, string?continuationToken, CancellationToken cancellationToken)
where TEventHandler : IJsonEventFeedHandler
{
return(CosmosEventStore <TContainerFactory, TSnapshotReader> .ReadFeedJson(this.ContainerFactory.GetContainer(), eventHandler, pageSizeHint, continuationToken, this.Options, cancellationToken));
}
