public static async Task ConsoleLogAllEvents()
{
await _client.SubscribeToAllAsync(Position.End, async (subscription, evnt, cancellationToken) =>
{
Console.WriteLine($"{Environment.NewLine}{evnt.Event.EventType} appended{Environment.NewLine}");
await Task.CompletedTask;
}, filterOptions : new SubscriptionFilterOptions(EventTypeFilter.RegularExpression("Event")));
}
public static async Task WhenFruitAdded()
{
await _client.SubscribeToAllAsync(Position.End,
async (subscription, evnt, cancellationToken) =>
{
try
{
dynamic e = evnt.Event.EventType switch
{
"AppleAddedEvent" => JsonConvert.DeserializeObject <AppleAddedEvent>(Encoding.UTF8.GetString(evnt.Event.Data.Span)),
"PearAddedEvent" => JsonConvert.DeserializeObject <PearAddedEvent>(Encoding.UTF8.GetString(evnt.Event.Data.Span)),
_ => null
};
Console.WriteLine($"{evnt.Event.EventNumber}");
await new SummonFruitCommandHandler().Handle(e.Id, e.Weight, e.FruitCondition, TypeOfFruit.Apple);
}
catch (Exception e)
{
Console.WriteLine("Error in subscr. " + e.Message);
}
}, resolveLinkTos : true, filterOptions : new SubscriptionFilterOptions(EventTypeFilter.RegularExpression("AppleAddedEvent|PearAddedEvent")));
}
public async Task regular_expression_event_type()
{
const string eventTypePrefix = nameof(regular_expression_event_type);
var streamPrefix = _fixture.GetStreamName();
var events = _fixture.CreateTestEvents(10)
.Select(e =>
new EventData(e.EventId, $"{eventTypePrefix}-{Guid.NewGuid():n}", e.Data, e.Metadata, e.ContentType))
.ToArray();
foreach (var e in events)
{
await _fixture.Client.AppendToStreamAsync($"{streamPrefix}_{Guid.NewGuid():n}",
AnyStreamRevision.NoStream, new[] { e });
}
var result = await _fixture.Client.ReadAllAsync(Direction.Backwards, Position.End, 20,
filterOptions : new FilterOptions(EventTypeFilter.RegularExpression(new Regex($"^{eventTypePrefix}"))))
.ToArrayAsync();
Assert.Equal(events.Select(x => x.EventId), result.Reverse().Select(x => x.OriginalEvent.EventId));
}
public async Task SubscribeAll_EventFilterExpression()
{
var prefixEventFilter = new SubscriptionFilterOptions(EventTypeFilter.RegularExpression("^test"));
await _client.SubscribeToAllAsync(SubscribeReturn,
filterOptions : prefixEventFilter);
}
