/// <summary>
/// Appends the events to the store.
/// </summary>
/// <param name="events">The events.</param>
/// <returns>The new version.</returns>
public async Task <long> AppendEvents(IList <IEvent> events)
{
if (events.Any() == true)
{
_transactionId++;
try
{
await _actorSystem.Create <IEventStoreTransactionActor>(GetTransactionId(_transactionId)).SetEvents(events);
}
catch
{
if (await _actorSystem.Create <IEventStoreTransactionActor>(GetTransactionId(_transactionId)).HasEvents())
{
// The transaction id already exist. Seems that the last transaction id
// value is corrupt. Reset the value and retry.
await ResetVersion();
await _actorSystem.Create <IEventStoreTransactionActor>(GetTransactionId(_transactionId)).SetEvents(events);
}
else
{
throw;
}
}
}
await StateManager.SetStateAsync(_stateName, _transactionId);
return(_transactionId);
}
/// <summary>
/// Reads the events from the store.
/// </summary>
/// <param name="afterVersion">
/// Ignore all events before the event with the given identifier, including itself.
/// </param>
/// <param name="take">Maximum number of events to read.</param>
/// <returns>The list of the matching events.</returns>
/// <exception cref="System.NotImplementedException"></exception>
public async Task <(IList <IEvent>?events, string?version)> Read(string?afterVersion = null, int take = 0)
{
long fromVersion = 0;
long latestVersion = await StoreActor.GetLastestVersion();
if (!string.IsNullOrWhiteSpace(afterVersion))
{
if (!long.TryParse(afterVersion, out fromVersion) || fromVersion == 0 || fromVersion > latestVersion)
{
// Invalid event store transaction identifier : '%1'.
throw new ArgumentOutOfRangeException(nameof(afterVersion), string.Format(CultureInfo.CurrentCulture, ExtenFlow.Messages.Properties.Resources.InvalidEventStoreTransactionId, afterVersion));
}
}
var events = new List <IEvent>();
long i = 0L;
while (fromVersion + i < latestVersion)
{
i++;
events.AddRange(
await _actorSystem
.Create <IEventStoreTransactionActor>(
EventStoreActor.GetTransactionId(_streamId, fromVersion + i)
)
.GetEvents()
);
if (take != 0L && i >= take)
{
break;
}
}
if (i == 0L)
{
return(null, null);
}
return(events, (fromVersion + i).ToString(CultureInfo.InvariantCulture));
}
/// <summary>
/// Finds a client by id
/// </summary>
/// <param name="clientId">The client id</param>
/// <returns>The client</returns>
/// <exception cref="System.NotImplementedException"></exception>
public Task <Client> FindClientByIdAsync(string clientId)
{
var clientActor = _actorSystem.Create <IClientActor>(clientId);
clientActor.Ask <ClientDe>
}