func (this *Paxos) doGetNextProposalBallot() (int64, error) {
nextProposalBallot := this.proposalBallot
if this.proposalBallot < 0 {
nextProposalBallot = int64(this.proposerIndex)
} else {
nextProposalBallot += int64(len(this.proposerList))
}
change := thispb.ProposerChange{}
change.ProposalBallot = proto.Int64(nextProposalBallot)
if err := this.doUpdateProposer(&change); err != nil {
this.Errorf("could not update the proposer state: %v", err)
return -1, err
}
return this.proposalBallot, nil
}
