private static async Task SubscribeToFiltered(EventStoreClient client)
{
#region stream-prefix-filtered-subscription
var prefixStreamFilter = new SubscriptionFilterOptions(StreamFilter.Prefix("test-", "other-"));
await client.SubscribeToAllAsync(
EventAppeared,
filterOptions : prefixStreamFilter);
#endregion stream-prefix-filtered-subscription
#region stream-regex-filtered-subscription
var regexStreamFilter = StreamFilter.RegularExpression(@"/invoice-\d\d\d/g");
#endregion stream-regex-filtered-subscription
}
private static async Task StreamRegex(EventStoreClient client)
{
#region stream-regex
var filter = new SubscriptionFilterOptions(
StreamFilter.RegularExpression("^account|^savings"));
#endregion stream-regex
await client.SubscribeToAllAsync(Position.Start,
(s, e, c) => {
Console.WriteLine(
$"{e.Event.EventType} @ {e.Event.Position.PreparePosition}");
return(Task.CompletedTask);
},
filterOptions : filter
);
}
public async Task regular_expression_stream_name()
{
var streamPrefix = _fixture.GetStreamName();
var events = _fixture.CreateTestEvents(10).ToArray();
foreach (var e in events)
{
await _fixture.Client.AppendToStreamAsync($"{streamPrefix}_{Guid.NewGuid():n}",
AnyStreamRevision.NoStream, new[] { e });
}
var result = await _fixture.Client.ReadAllAsync(Direction.Backwards, Position.End, 20,
filterOptions : new FilterOptions(StreamFilter.RegularExpression($"^{streamPrefix}")))
.ToArrayAsync();
Assert.Equal(events.Select(x => x.EventId), result.Reverse().Select(x => x.OriginalEvent.EventId));
}
public async Task SubscribeAll_StreamFilterExpression()
{
var prefixStreamFilter = new SubscriptionFilterOptions(StreamFilter.RegularExpression("^test|^other"));
await _client.SubscribeToAllAsync(SubscribeReturn,
filterOptions : prefixStreamFilter);
}