func (twoA *proposalTwoA) addTwoAToAcceptRequest(seg *capn.Segment, acceptRequest *msgs.TxnVoteAcceptRequest, sender *proposalSender) bool {
var ballotPtr *msgs.Ballot
if twoA.winningBallot == nil { // free choice from everyone
ballot := twoA.ballot.AddToSeg(seg)
ballotPtr = &ballot
} else {
ballotPtr = twoA.winningBallot
}
acceptRequest.SetBallot(*ballotPtr)
acceptRequest.SetRoundNumber(uint64(twoA.currentRoundNumber))
twoA.twoASender = sender
twoA.nextState(nil)
return ballotPtr.Vote().Which() != msgs.VOTE_COMMIT
}
func (i *instance) TwoATxnVotesReceived(request *msgs.TxnVoteAcceptRequest) (accepted bool, rejected bool) {
roundNumber := paxosNumber(request.RoundNumber())
if roundNumber == i.acceptedNum && i.accepted != nil {
// duplicate 2a. Don't issue any response.
return
} else if roundNumber >= i.promiseNum || i.promiseNum == 0 {
i.promiseNum = roundNumber
i.acceptedNum = roundNumber
ballot := request.Ballot()
i.accepted = &ballot
accepted = true
return
} else {
rejected = true
return
}
}