Example #1
0
func newTwoBTxnVotesSender(outcome *msgs.Outcome, txnId *common.TxnId, submitter common.RMId, recipients ...common.RMId) *twoBTxnVotesSender {
	submitterSeg := capn.NewBuffer(nil)
	submitterMsg := msgs.NewRootMessage(submitterSeg)
	submitterMsg.SetSubmissionOutcome(*outcome)

	if outcome.Which() == msgs.OUTCOME_ABORT {
		abort := outcome.Abort()
		abort.SetResubmit() // nuke out the updates as proposers don't need them.
	}

	seg := capn.NewBuffer(nil)
	msg := msgs.NewRootMessage(seg)
	twoB := msgs.NewTwoBTxnVotes(seg)
	msg.SetTwoBTxnVotes(twoB)
	twoB.SetOutcome(*outcome)

	server.Log(txnId, "Sending 2B to", recipients)

	return &twoBTxnVotesSender{
		msg:          server.SegToBytes(seg),
		recipients:   recipients,
		submitterMsg: server.SegToBytes(submitterSeg),
		submitter:    submitter,
	}
}
Example #2
0
func (am *AcceptorManager) TwoATxnVotesReceived(sender common.RMId, txnId *common.TxnId, twoATxnVotes *msgs.TwoATxnVotes) {
	instanceRMId := common.RMId(twoATxnVotes.RmId())
	server.Log(txnId, "2A received from", sender, "; instance:", instanceRMId)
	instId := instanceId([instanceIdLen]byte{})
	instIdSlice := instId[:]
	copy(instIdSlice, txnId[:])
	binary.BigEndian.PutUint32(instIdSlice[common.KeyLen:], uint32(instanceRMId))

	txnCap := twoATxnVotes.Txn()
	a := am.ensureAcceptor(txnId, &txnCap)
	requests := twoATxnVotes.AcceptRequests()
	failureInstances := make([]*instance, 0, requests.Len())
	failureRequests := make([]*msgs.TxnVoteAcceptRequest, 0, requests.Len())

	for idx, l := 0, requests.Len(); idx < l; idx++ {
		request := requests.At(idx)
		vUUId := common.MakeVarUUId(request.Ballot().VarId())
		copy(instIdSlice[common.KeyLen+4:], vUUId[:])
		inst := am.ensureInstance(txnId, &instId, vUUId)
		accepted, rejected := inst.TwoATxnVotesReceived(&request)
		if accepted {
			a.BallotAccepted(instanceRMId, inst, vUUId, &txnCap)
		} else if rejected {
			failureInstances = append(failureInstances, inst)
			failureRequests = append(failureRequests, &request)
		}
	}

	if len(failureInstances) != 0 {
		replySeg := capn.NewBuffer(nil)
		msg := msgs.NewRootMessage(replySeg)
		twoBTxnVotes := msgs.NewTwoBTxnVotes(replySeg)
		msg.SetTwoBTxnVotes(twoBTxnVotes)
		twoBTxnVotes.SetFailures()
		failuresCap := twoBTxnVotes.Failures()
		failuresCap.SetTxnId(txnId[:])
		failuresCap.SetRmId(uint32(instanceRMId))
		nacks := msgs.NewTxnVoteTwoBFailureList(replySeg, len(failureInstances))
		failuresCap.SetNacks(nacks)
		for idx, inst := range failureInstances {
			failure := nacks.At(idx)
			failure.SetVarId(inst.vUUId[:])
			failure.SetRoundNumber(failureRequests[idx].RoundNumber())
			failure.SetRoundNumberTooLow(uint32(inst.promiseNum >> 32))
		}
		server.Log(txnId, "Sending 2B failures to", sender, "; instance:", instanceRMId)
		NewOneShotSender(server.SegToBytes(replySeg), am.ConnectionManager, sender)
	}
}