private void SaveEvent(CommandBusinessContext[] contexts)
{
var evs = contexts.SelectMany(a => a.UncommittedEvents ?? Enumerable.Empty <IEvent>()).ToList();
if (evs == null || !evs.Any())
{
return;
}
try
{
_eventStore.AddRange(evs);
}
catch (Exception ex)
{
foreach (var item in contexts)
{
item.Reply.Exception = ex;
item.Reply.IsSuccess = false;
}
_logger.LogError(ex, $"存储事件失败，错误消息：{ex.Message}");
}
}
public async Task <IReadOnlyList <Result <OptimisticConcurrencyErrorDesc> > > AddRange(IReadOnlyList <IEvent> events)
{
await _evStore.AddRange(events);
var grouped = events.Cast <EndorsementAddedOrRemovedEvent>()
.GroupBy(x => x.TargetId)
.ToList();
var results = grouped.Select
(
async iG =>
{
var snapshot = await _CreateSnapshot(iG.Key, iG.ToList());
var leftSnapshot = _snaphotsByIdMap.AddOrUpdate(iG.Key, snapshot, (xId, xExisting) => _ChooseSnapshot(snapshot, xExisting));
if (leftSnapshot != snapshot)
{
return(Result <OptimisticConcurrencyErrorDesc> .Error(new OptimisticConcurrencyErrorDesc()));
}
else
{
return(Result <OptimisticConcurrencyErrorDesc> .Ok);
}
}
).ToList();
return(await Task.WhenAll(results));
}