示例#1
0
void Proposer :: OnPrepareReply(const PaxosMsg & oPaxosMsg)
{
    PLGHead("START Msg.ProposalID %lu State.ProposalID %lu Msg.from_nodeid %lu RejectByPromiseID %lu",
            oPaxosMsg.proposalid(), m_oProposerState.GetProposalID(), 
            oPaxosMsg.nodeid(), oPaxosMsg.rejectbypromiseid());

    BP->GetProposerBP()->OnPrepareReply();
    
    if (!m_bIsPreparing)
    {
        BP->GetProposerBP()->OnPrepareReplyButNotPreparing();
        //PLGErr("Not preparing, skip this msg");
        return;
    }

    if (oPaxosMsg.proposalid() != m_oProposerState.GetProposalID())
    {
        BP->GetProposerBP()->OnPrepareReplyNotSameProposalIDMsg();
        //PLGErr("ProposalID not same, skip this msg");
        return;
    }

    m_oMsgCounter.AddReceive(oPaxosMsg.nodeid());

    if (oPaxosMsg.rejectbypromiseid() == 0)
    {
        BallotNumber oBallot(oPaxosMsg.preacceptid(), oPaxosMsg.preacceptnodeid());
        PLGDebug("[Promise] PreAcceptedID %lu PreAcceptedNodeID %lu ValueSize %zu", 
                oPaxosMsg.preacceptid(), oPaxosMsg.preacceptnodeid(), oPaxosMsg.value().size());
        m_oMsgCounter.AddPromiseOrAccept(oPaxosMsg.nodeid());
        m_oProposerState.AddPreAcceptValue(oBallot, oPaxosMsg.value());
    }
    else
    {
        PLGDebug("[Reject] RejectByPromiseID %lu", oPaxosMsg.rejectbypromiseid());
        m_oMsgCounter.AddReject(oPaxosMsg.nodeid());
        m_bWasRejectBySomeone = true;
        m_oProposerState.SetOtherProposalID(oPaxosMsg.rejectbypromiseid());
    }

    if (m_oMsgCounter.IsPassedOnThisRound())
    {
        int iUseTimeMs = m_oTimeStat.Point();
        BP->GetProposerBP()->PreparePass(iUseTimeMs);
        PLGImp("[Pass] start accept, usetime %dms", iUseTimeMs);
        m_bCanSkipPrepare = true;
        Accept();
    }
    else if (m_oMsgCounter.IsRejectedOnThisRound()
            || m_oMsgCounter.IsAllReceiveOnThisRound())
    {
        BP->GetProposerBP()->PrepareNotPass();
        PLGImp("[Not Pass] wait 30ms and restart prepare");
        AddPrepareTimer(OtherUtils::FastRand() % 30 + 10);
    }

    PLGHead("END");
}
示例#2
0
void Learner :: OnSendLearnValue(const PaxosMsg & oPaxosMsg)
{
    BP->GetLearnerBP()->OnSendLearnValue();

    PLGHead("START Msg.InstanceID %lu Now.InstanceID %lu Msg.ballot_proposalid %lu Msg.ballot_nodeid %lu Msg.ValueSize %zu",
            oPaxosMsg.instanceid(), GetInstanceID(), oPaxosMsg.proposalid(), 
            oPaxosMsg.nodeid(), oPaxosMsg.value().size());

    if (oPaxosMsg.instanceid() > GetInstanceID())
    {
        PLGDebug("[Latest Msg] i can't learn");
        return;
    }
    else if (oPaxosMsg.instanceid() < GetInstanceID())
    {
        PLGDebug("[Lag Msg] no need to learn");
        return;
    }

    //learn value
    BallotNumber oBallot(oPaxosMsg.proposalid(), oPaxosMsg.proposalnodeid());
    int ret = m_oLearnerState.LearnValue(oPaxosMsg.instanceid(), oBallot, oPaxosMsg.value(), GetLastChecksum());
    if (ret != 0)
    {
        PLGErr("LearnState.LearnValue fail, ret %d", ret);
        return;
    }
    
    PLGHead("END LearnValue OK, proposalid %lu proposalid_nodeid %lu valueLen %zu", 
            oPaxosMsg.proposalid(), oPaxosMsg.nodeid(), oPaxosMsg.value().size());

    if (oPaxosMsg.flag() == PaxosMsgFlagType_SendLearnValue_NeedAck)
    {
        //every time' when receive valid need ack learn value, reset noop timeout.
        Reset_AskforLearn_Noop();

        SendLearnValue_Ack(oPaxosMsg.nodeid());
    }
}