public async Task <ulong> TerminateAsync(Guid eventID, string eventName, string streamName, ulong?expectedEventNumber, EventStoreState expectedState)
{
var eventData = new EventData(Uuid.FromGuid(eventID), "Delete", null, null);
if (expectedEventNumber.HasValue)
{
var revision = new StreamRevision(expectedEventNumber.Value);
var writeResult = await client.AppendToStreamAsync(streamName, revision, new EventData[] { eventData });
await client.TombstoneAsync(streamName, revision);
return(writeResult.NextExpectedStreamRevision);
}
else
{
StreamState state;
switch (expectedState)
{
case EventStoreState.Any: state = StreamState.Any; break;
case EventStoreState.NotExisting: state = StreamState.NoStream; break;
case EventStoreState.Existing: state = StreamState.StreamExists; break;
default: throw new NotImplementedException();
}
var writeResult = await client.AppendToStreamAsync(streamName, state, new EventData[] { eventData });
await client.TombstoneAsync(streamName, state);
return(writeResult.NextExpectedStreamRevision);
}
}
private static async Task TestReadFromtombstoned(EventStoreClient client)
{
var idForTombstoneTest = Guid.NewGuid().ToString();
await client.AppendToStreamAsync(idForTombstoneTest, StreamRevision.FromInt64(-1),
new[] { new EventData(Uuid.NewUuid(), "TestType", new byte[] { 0x00 }) });
await client.TombstoneAsync(idForTombstoneTest, StreamState.Any);
var testResultNonExistent =
client.ReadStreamAsync(Direction.Backwards, Guid.NewGuid().ToString(), StreamPosition.End);
var testResult = client.ReadStreamAsync(Direction.Backwards, idForTombstoneTest, StreamPosition.End,
configureOperationOptions: o => { o.ThrowOnAppendFailure = false; });
var testState = await testResultNonExistent.ReadState;
testState = await testResult.ReadState;
}
public static async Task CleanUp(String prefix, EventStoreClientSettings settings)
{
if (settings == null)
{
settings = EventStoreClientSettings.Create("esdb://127.0.0.1:2113?tls=false");
}
var client = new EventStoreClient(settings);
var result = client.ReadAllAsync(Direction.Backwards, Position.End);
HashSet <String> streamsToDelete = new HashSet <string>(await result.Where(x => x.OriginalStreamId.StartsWith($"{prefix}-")).Select(x => x.OriginalStreamId).ToListAsync());
foreach (var item in streamsToDelete)
{
await client.TombstoneAsync(item, StreamState.Any);
}
}
public Task <DeleteResult> TombstoneAsync(string streamName, StreamRevision expectedRevision, Action <EventStoreClientOperationOptions> configureOperationOptions = null,
UserCredentials userCredentials = null, CancellationToken cancellationToken = new CancellationToken())
{
return(Client.TombstoneAsync(streamName, expectedRevision, configureOperationOptions, userCredentials, cancellationToken));
}
public async Task DeleteAsync <TAggregate>(TAggregate aggregate) where TAggregate : class, IAggregateRoot
{
string streamName = $"{aggregate.GetType().Name}:{aggregate.Id}";
await Policies.RedisFallbackPolicy.ExecuteAsync(() => _cache.KeyDeleteAsync(streamName));
var service = _context.GetService <IAggregateMap <TAggregate> >();
if (service != null)
{
await Policies.SqRetryPolicy.ExecuteAsync(() => service.DeleteAsync(aggregate));
}
var result = await Policies.EventStoreRetryPolicy.ExecuteAndCaptureAsync(() => _eventStoreClient.TombstoneAsync(streamName, StreamRevision.FromInt64(aggregate.Version)));
if (result.Outcome == OutcomeType.Successful)
{
await Policies.RedisFallbackPolicy.ExecuteAsync(() => _cache.KeyDeleteAsync(streamName));
return;
}
if (service != null)
{
var publishResult = await Policies.PublishRetryPolicy.ExecuteAndCaptureAsync(() => _publishEndpoint.Publish(new AggregateInOutOfSyncState()
{
AggregateId = aggregate.Id,
Type = aggregate.GetType().FullName,
Version = aggregate.Version
}));
if (publishResult.Outcome == OutcomeType.Failure)
{
throw new AggregateInOutOfSyncException(aggregate, result.FinalException);
}
throw result.FinalException;
}
}
