private async Task <AppendResult> InsertEvent(EventCommit commit, bool versionCheck)
{
IClientSessionHandle session = null;
if (UseTransactions)
{
session = await Database.Client.StartSessionAsync(new ClientSessionOptions());
session.StartTransaction(new TransactionOptions());
}
var watch = Stopwatch.StartNew();
commit.Ordinal = await identifier.Next("commit");
AppendResult result = AppendResult.NoUpdate;
try
{
var currentVersion = await GetVersion(commit.AggregateType, commit.AggregateId);
if (versionCheck && currentVersion != commit.ExpectedPreviousVersion)
{
logger.LogWarning("Event Version check requested and version was wrong . was: {0} expected: {1}",
currentVersion, commit.ExpectedPreviousVersion);
//TODO If version check throw exception!
result = AppendResult.WrongVersion(commit.VersionCommit);
}
commit.VersionCommit = currentVersion + commit.Events.Count;
await Collection.InsertOneAsync(commit);
result = new AppendResult(commit.Id.ToString(), false, commit.VersionCommit, "SUCCESS");
}
catch (MongoWriteException e)
{
if (e.Message.Contains("E11000 duplicate key"))
{
result = AppendResult.WrongVersion(commit.VersionCommit);
}
else
{
logger.LogError(e, "Error when saving a commit for {type} {id}", commit.AggregateType,
commit.AggregateId);
throw;
}
}
finally
{
await CommitOrAbortTx(session, result);
watch.Stop();
logger.LogDebug("{Count} events for {Type} - {Id} handled. Result: {Result}.", commit.Events.Count,
commit.AggregateType, commit.AggregateId, result.CommitId);
}
return(result);
}
private async Task <AppendResult> InsertEvent(EventCommit commit, bool versionCheck)
{
commit.Ordinal = await identifier.Next("commit");
try
{
await Collection.InsertOneAsync(commit);
}
catch (MongoWriteException e)
{
if (e.Message.Contains("E11000 duplicate key "))
{
return(AppendResult.WrongVersion(commit.VersionCommit));
}
throw;
}
return(new AppendResult(false, commit.VersionCommit));
}