func (this *Election) doUpdateConfig(change *thispb.Configuration) error {
walRecord := thispb.WALRecord{}
walRecord.ConfigChange = change
_, errSync := wal.SyncChangeProto(this.wal, this.uid, &walRecord)
if errSync != nil {
this.Errorf("could not append config change wal record: %v", errSync)
return errSync
}
this.doRestoreConfig(change)
return nil
}
func (this *Election) doUpdateCommittee(change *thispb.CommitteeChange) error {
if !this.wal.IsRecovering() {
walRecord := thispb.WALRecord{}
walRecord.CommitteeChange = change
_, errSync := wal.SyncChangeProto(this.wal, this.uid, &walRecord)
if errSync != nil {
this.Errorf("could not write committee change wal record: %v", errSync)
return errSync
}
}
round := change.GetNewElectionRound()
winner := change.GetNewElectionWinner()
this.electionHistoryMap[round] = winner
return nil
}
func (this *Paxos) doUpdateProposer(change *thispb.ProposerChange) error {
if !this.wal.IsRecovering() {
walRecord := thispb.WALRecord{}
walRecord.ProposerChange = change
_, errSync := wal.SyncChangeProto(this.wal, this.uid, &walRecord)
if errSync != nil {
this.Errorf("could not write proposer change record: %v", errSync)
return errSync
}
}
if change.ProposalBallot != nil {
ballot := change.GetProposalBallot()
if this.proposalBallot < ballot {
this.proposalBallot = ballot
}
}
return nil
}
func (this *Paxos) doUpdateAcceptor(change *thispb.AcceptorChange) error {
if !this.wal.IsRecovering() {
walRecord := thispb.WALRecord{}
walRecord.AcceptorChange = change
_, errSync := wal.SyncChangeProto(this.wal, this.uid, &walRecord)
if errSync != nil {
this.Errorf("could not write acceptor change record: %v", errSync)
return errSync
}
}
if change.PromisedBallot != nil {
this.promisedBallot = change.GetPromisedBallot()
}
if change.VotedBallot != nil {
ballot := change.GetVotedBallot()
value := change.GetVotedValue()
this.votedBallot = ballot
this.votedValue = value
this.votedValueMap[ballot] = value
}
if change.AckedLearner != nil {
learner := change.GetAckedLearner()
if change.GetAckedChosenValue() {
this.doneLearnerSet[learner] = struct{}{}
} else {
for _, ballot := range change.GetAckedBallotList() {
learnerSet, found := this.learnerAckMap[ballot]
if !found {
learnerSet = make(map[string]struct{})
this.learnerAckMap[ballot] = learnerSet
}
learnerSet[learner] = struct{}{}
}
}
}
return nil
}