public async Task UpdateAtomicAsync(Func <Task <TDocument> > updateAsync, Func <TDocument, Task> afterUpdateAsync = null)
{
if (_isDistributed)
{
try
{
_ = await _distributedCache.GetStringAsync(_options.CacheIdKey);
}
catch
{
await DocumentStore.CancelAsync();
throw new InvalidOperationException($"Can't update the '{typeof(TDocument).Name}' if not able to access the distributed cache");
}
}
var delegates = ShellScope.GetOrCreateFeature <UpdateDelegates>();
if (delegates.UpdateDelegateAsync == null ||
!delegates.UpdateDelegateAsync.GetInvocationList().Contains(updateAsync))
{
delegates.UpdateDelegateAsync += () => updateAsync();
}
if (afterUpdateAsync != null &&
(delegates.AfterUpdateDelegateAsync == null ||
!delegates.AfterUpdateDelegateAsync.GetInvocationList().Contains(afterUpdateAsync)))
{
delegates.AfterUpdateDelegateAsync += document => afterUpdateAsync(document);
}
DocumentStore.AfterCommitSuccess <TDocument>(async() =>
{
(var locker, var locked) = await _distributedLock.TryAcquireLockAsync(
_options.CacheKey + "_LOCK",
TimeSpan.FromMilliseconds(_options.LockTimeout),
TimeSpan.FromMilliseconds(_options.LockExpiration));
if (!locked)
{
return;
}
await using var acquiredLock = locker;
TDocument document = null;
foreach (var d in delegates.UpdateDelegateAsync.GetInvocationList())
{
document = await((UpdateDelegate)d)();
}
document.Identifier ??= IdGenerator.GenerateId();
await SetInternalAsync(document);
if (delegates.AfterUpdateDelegateAsync != null)
{
foreach (var d in delegates.AfterUpdateDelegateAsync.GetInvocationList())
{
await((AfterUpdateDelegate)d)(document);
}
}
});
}
