public Task <TransactionalStatus> CommitReadOnly(Guid transactionId, AccessCounter accessCount, DateTime timeStamp)
{
// validate the lock
var valid = ValidateLock(transactionId, accessCount, out var status, out var record);
record.Timestamp = timeStamp;
record.Role = CommitRole.ReadOnly;
record.PromiseForTA = new TaskCompletionSource <TransactionalStatus>();
if (!valid)
{
NotifyOfAbort(record, status);
}
else
{
MergeClock(record.Timestamp);
}
lockWorker.Notify();
return(record.PromiseForTA.Task);
}
public Task Prepare(Guid transactionId, AccessCounter accessCount, DateTime timeStamp, ITransactionParticipant transactionManager)
{
var valid = ValidateLock(transactionId, accessCount, out var status, out var record);
record.Timestamp = timeStamp;
record.Role = CommitRole.RemoteCommit; // we are not the TM
record.TransactionManager = transactionManager;
record.LastSent = null;
record.PrepareIsPersisted = false;
if (!valid)
{
NotifyOfAbort(record, status);
}
else
{
MergeClock(record.Timestamp);
}
lockWorker.Notify();
return(Task.CompletedTask); // one-way, no response
}
// blocks until the given operation for this transaction can be executed.
private Task <TResult> EnterLock <TResult>(Guid transactionId, DateTime priority,
AccessCounter counter, bool isRead, Task <TResult> task)
{
bool rollbacksOccurred = false;
// search active transactions
if (Find(transactionId, isRead, out var group, out var record))
{
// check if we lost some reads or writes already
if (counter.Reads > record.NumberReads || counter.Writes > record.NumberWrites)
{
throw new OrleansBrokenTransactionLockException(transactionId.ToString(), "when re-entering lock");
}
// check if the operation conflicts with other transactions in the group
if (HasConflict(isRead, priority, transactionId, group, out var resolvable))
{
if (!resolvable)
{
throw new OrleansTransactionLockUpgradeException(transactionId.ToString());
}
else
{
// rollback all conflicts
var conflicts = Conflicts(transactionId, group).ToList();
if (conflicts.Count > 0)
{
foreach (var r in conflicts)
{
Rollback(r, "wait-die on conflict", true);
rollbacksOccurred = true;
}
}
}
}
}
public Task <TransactionalStatus> PrepareAndCommit(Guid transactionId, AccessCounter accessCount, DateTime timeStamp, List <ITransactionParticipant> writeParticipants, int totalParticipants)
{
// validate the lock
var valid = ValidateLock(transactionId, accessCount, out var status, out var record);
record.Timestamp = timeStamp;
record.Role = CommitRole.LocalCommit; // we are the TM
record.WaitCount = totalParticipants - 1;
record.WaitingSince = DateTime.UtcNow;
record.WriteParticipants = writeParticipants;
record.PromiseForTA = new TaskCompletionSource <TransactionalStatus>();
if (!valid)
{
NotifyOfAbort(record, status);
}
else
{
MergeClock(record.Timestamp);
}
lockWorker.Notify();
return(record.PromiseForTA.Task);
}
public Task <TransactionalStatus> PrepareAndCommit(string resourceId, Guid transactionId, AccessCounter accessCount, DateTime timeStamp, List <ParticipantId> writeResources, int totalResources)
{
return(GetManager(resourceId).PrepareAndCommit(transactionId, accessCount, timeStamp, writeResources, totalResources));
}
public Task Prepare(string resourceId, Guid transactionId, AccessCounter accessCount, DateTime timeStamp, ParticipantId transactionManager)
{
return(GetResource(resourceId).Prepare(transactionId, accessCount, timeStamp, transactionManager));
}
public Task <TransactionalStatus> PrepareAndCommit(string resourceId, Guid transactionId, AccessCounter accessCount, DateTime timeStamp, List <ITransactionParticipant> writeParticipants, int totalParticipants)
{
return(localParticipants[resourceId].PrepareAndCommit(transactionId, accessCount, timeStamp, writeParticipants, totalParticipants));
}
public Task Prepare(string resourceId, Guid transactionId, AccessCounter accessCount, DateTime timeStamp, ITransactionParticipant transactionManager)
{
return(localParticipants[resourceId].Prepare(transactionId, accessCount, timeStamp, transactionManager));
}
public Task <TransactionalStatus> CommitReadOnly(string resourceId, Guid transactionId, AccessCounter accessCount, DateTime timeStamp)
{
return(localParticipants[resourceId].CommitReadOnly(transactionId, accessCount, timeStamp));
}
public Task <TransactionalStatus> PrepareAndCommit(Guid transactionId, AccessCounter accessCount, DateTime timeStamp, List <ITransactionParticipant> writeParticipants, int totalParticipants)
{
return(this.transactionManager.PrepareAndCommit(transactionId, accessCount, timeStamp, writeParticipants, totalParticipants));
}
public Task <TransactionalStatus> CommitReadOnly(Guid transactionId, AccessCounter accessCount, DateTime timeStamp)
{
return(this.transactionManager.CommitReadOnly(transactionId, accessCount, timeStamp));
}
public Task Prepare(Guid transactionId, AccessCounter accessCount, DateTime timeStamp, ITransactionParticipant transactionManager)
{
return(this.resource.Prepare(transactionId, accessCount, timeStamp, transactionManager));
}
public Task <TransactionalStatus> CommitReadOnly(string resourceId, Guid transactionId, AccessCounter accessCount, DateTime timeStamp)
{
return(GetResource(resourceId).CommitReadOnly(transactionId, accessCount, timeStamp));
}
