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
}
public async Task Subscribe(CancellationToken stoppingToken)
{
await _eventStoreClient.SubscribeToAllAsync(
await _streamManager.GetPosition(),
async (subscription, @event, cancellationToken) =>
{
_logger.LogInformation("EventAppeared at position: {arg2}", @event.OriginalPosition?.CommitPosition);
await _streamHandler.Handle(@event.Event);
await _streamManager.SetPosition(@event.Event.Position);
},
filterOptions : new SubscriptionFilterOptions(
StreamFilter.Prefix("Identity")
),
cancellationToken : stoppingToken
);
}
static async Task CreatePersistentSubscriptionToAll(EventStorePersistentSubscriptionsClient client)
{
#region create-persistent-subscription-to-all
var userCredentials = new UserCredentials("admin", "changeit");
var filter = StreamFilter.Prefix("test");
var settings = new PersistentSubscriptionSettings();
await client.CreateToAllAsync(
"subscription-group",
filter,
settings,
userCredentials);
#endregion create-persistent-subscription-to-all
}
private static async Task StreamPrefix(EventStoreClient client)
{
#region stream-prefix
var filter = new SubscriptionFilterOptions(
StreamFilter.Prefix("user-"));
#endregion stream-prefix
await client.SubscribeToAllAsync(Position.Start,
(s, e, c) => {
Console.WriteLine(
$"{e.Event.EventType} @ {e.Event.Position.PreparePosition}");
return(Task.CompletedTask);
},
filterOptions : filter
);
}
protected override async Task Given()
{
foreach (var e in _events)
{
await StreamsClient.AppendToStreamAsync("test-" + Guid.NewGuid(), StreamState.Any, new[] { e });
}
await Client.CreateToAllAsync(Group,
StreamFilter.Prefix("test"),
new PersistentSubscriptionSettings(
minCheckPointCount : 5,
checkPointAfter : TimeSpan.FromSeconds(1),
startFrom : Position.Start),
TestCredentials.Root);
_checkPointSubscription = await StreamsClient.SubscribeToStreamAsync(_checkPointStream,
(s, e, ct) => {
if (_checkPoints.Count == 0)
{
_firstCheckPointSource.TrySetResult(e);
}
else
{
_secondCheckPointSource.TrySetResult(e);
}
_checkPoints.Add(e);
return(Task.CompletedTask);
},
userCredentials : TestCredentials.Root);
_subscription = await Client.SubscribeToAllAsync(Group,
eventAppeared : (s, e, r, ct) => {
_appearedEvents.Add(e);
if (_appearedEvents.Count == _events.Length)
{
_appeared.TrySetResult(true);
}
return(Task.CompletedTask);
},
userCredentials : TestCredentials.Root);
await Task.WhenAll(_appeared.Task, _firstCheckPointSource.Task).WithTimeout();
FirstCheckPoint = _firstCheckPointSource.Task.Result.Event.Data.ParsePosition();
}
public async Task prefix_stream_name()
{
var streamPrefix = _fixture.GetStreamName();
var events = _fixture.CreateTestEvents(10).ToArray();
foreach (var e in events)
{
await _fixture.Client.AppendToStreamAsync($"{streamPrefix}_{Guid.NewGuid():n}",
AnyStreamRevision.NoStream, new[] { e });
}
var result = await _fixture.Client.ReadAllAsync(Direction.Backwards, Position.End, 20,
filterOptions : new FilterOptions(StreamFilter.Prefix(streamPrefix)))
.ToArrayAsync();
Assert.Equal(events.Select(x => x.EventId), result.Reverse().Select(x => x.OriginalEvent.EventId));
}
public async Task SubscribeAll_StreamFilterPrefix()
{
var prefixStreamFilter = new SubscriptionFilterOptions(StreamFilter.Prefix("test-", "other-"));
await _client.SubscribeToAllAsync(SubscribeReturn,
filterOptions : prefixStreamFilter);
}
public async Task subscription_does_not_send_checkpoint_reached_after_disposal()
{
var streamName = _fixture.GetStreamName();
var ignoredStreamName = $"ignore_{streamName}";
var subscriptionDisposed = new TaskCompletionSource <bool>();
var eventAppeared = new TaskCompletionSource <bool>();
var checkpointReachAfterDisposed = new TaskCompletionSource <bool>();
await _fixture.Client.AppendToStreamAsync(streamName, StreamRevision.None, _fixture.CreateTestEvents());
var subscription = await _fixture.Client.SubscribeToAllAsync((_, __, ___) => {
eventAppeared.TrySetResult(true);
return(Task.CompletedTask);
}, false,
(_, __, ____) => subscriptionDisposed.TrySetResult(true),
new SubscriptionFilterOptions(StreamFilter.Prefix(streamName), 1, (_, __, ____) => {
if (!subscriptionDisposed.Task.IsCompleted)
{
return(Task.CompletedTask);
}
checkpointReachAfterDisposed.TrySetResult(true);
return(Task.CompletedTask);
}), userCredentials : new UserCredentials("admin", "changeit"));
await eventAppeared.Task;
subscription.Dispose();
await subscriptionDisposed.Task;
await _fixture.Client.AppendToStreamAsync(ignoredStreamName, StreamRevision.None,
_fixture.CreateTestEvents(50));
var delay = Task.Delay(300);
var result = await Task.WhenAny(delay, checkpointReachAfterDisposed.Task);
Assert.Equal(delay, result); // iow 300ms have passed without seeing checkpointReachAfterDisposed
}