public void TransactionCoordinator_should_forward_transaction_init_to_all_participants()
{
var p1 = ActorOf(config => config.Receive<TransactionCoordinator.BeginTransaction>((transaction, context) => TestActor.Forward(transaction)));
var p2 = ActorOf(config => config.Receive<TransactionCoordinator.BeginTransaction>((transaction, context) => TestActor.Forward(transaction)));
var beginTransaction = new TransactionCoordinator.BeginTransaction(_transactionId, new[] { p1, p2 }, null);
_transaction.Tell(beginTransaction);
ExpectMsg<TransactionCoordinator.BeginTransaction>(e => e.TransactionId == _transactionId);
ExpectMsg<TransactionCoordinator.BeginTransaction>(e => e.TransactionId == _transactionId);
ExpectNoMsg();
}
public void TransactionCoordinator_after_receiving_continue_from_all_participants_should_send_commit()
{
Action<IActorDsl> configure = config =>
{
config.Receive<TransactionCoordinator.BeginTransaction>((transaction, context) => context.Sender.Tell(new TransactionCoordinator.Continue(transaction.TransactionId)));
config.Receive<TransactionCoordinator.Commit>((commit, context) => TestActor.Forward(commit));
};
var p1 = ActorOf(configure);
var p2 = ActorOf(configure);
var beginTransaction = new TransactionCoordinator.BeginTransaction(_transactionId, new[] { p1, p2 }, null);
_transaction.Tell(beginTransaction);
ExpectMsg<TransactionCoordinator.Commit>(e => e.TransactionId == _transactionId);
ExpectMsg<TransactionCoordinator.Commit>(e => e.TransactionId == _transactionId);
ExpectNoMsg();
}
public void TransactionCoordinator_after_receiving_any_abort_should_send_rollback()
{
var p1 = ActorOf(config =>
{
config.Receive<TransactionCoordinator.BeginTransaction>((transaction, context) => context.Sender.Tell(new TransactionCoordinator.Continue(transaction.TransactionId)));
config.Receive<TransactionCoordinator.Commit>((commit, context) => TestActor.Forward(commit));
config.Receive<TransactionCoordinator.Rollback>((rollback, context) => TestActor.Forward(rollback));
});
var p2 = ActorOf(config =>
{
config.Receive<TransactionCoordinator.BeginTransaction>((transaction, context) =>
context.Sender.Tell(new TransactionCoordinator.Abort(transaction.TransactionId, new Exception("boom"))));
config.Receive<TransactionCoordinator.Commit>((commit, context) => TestActor.Forward(commit));
config.Receive<TransactionCoordinator.Rollback>((rollback, context) => TestActor.Forward(rollback));
});
var beginTransaction = new TransactionCoordinator.BeginTransaction(_transactionId, new[] { p1, p2 }, null);
_transaction.Tell(beginTransaction);
ExpectMsg<TransactionCoordinator.Rollback>(e => e.TransactionId == _transactionId);
ExpectMsg<TransactionCoordinator.Rollback>(e => e.TransactionId == _transactionId);
ExpectNoMsg();
}
/// <summary>
/// Establishes first phase of the two-phase commit transaction. Current account funds are being verified. If transfer can be proceed,
/// transaction goes onto pending transactions list nad <see cref="TransactionCoordinator.Commit"/> message is sent to transaction coordinator.
/// Otherwise transaction is aborted.
/// </summary>
private void EstablishTransferTransaction(TransactionCoordinator.BeginTransaction e)
{
var pendingTransaction = e.Payload as PendingTransfer;
if (pendingTransaction != null)
{
if (Self.Equals(pendingTransaction.Sender))
{
// if current actor is account sender,
var unreserved = State.Balance - ReservedFunds;
if (pendingTransaction.Amount > 0 && pendingTransaction.Amount <= unreserved)
{
_pendingTransactions.Add(pendingTransaction);
Sender.Tell(new TransactionCoordinator.Continue(pendingTransaction.TransactionId));
}
else
{
Sender.Tell(new TransactionCoordinator.Abort(pendingTransaction.TransactionId,
new Exception(string.Format("Account {0} has insufficient funds. Unreserved balance {1}, requested {2}", State.Id, unreserved, pendingTransaction.Amount))));
}
}
else if (Self.Equals(pendingTransaction.Recipient))
{
// recipient's account doesn't need to check if it has enough funds
_pendingTransactions.Add(pendingTransaction);
Sender.Tell(new TransactionCoordinator.Commit(pendingTransaction.TransactionId));
}
else
{
Sender.Tell(new TransactionCoordinator.Abort(e.TransactionId,
new Exception(string.Format(
"Transaction {0} was addressed to {1}, who is neither sender nor recipient", e.TransactionId, Self))));
Unhandled(e);
}
}
}