C++ PaxosMsg::instanceid方法代码示例

void Learner :: OnSendLearnValue_Ack(const PaxosMsg & oPaxosMsg)
{
    BP->GetLearnerBP()->OnSendLearnValue_Ack();

    PLGHead("Msg.Ack.Instanceid %lu Msg.from_nodeid %lu", oPaxosMsg.instanceid(), oPaxosMsg.nodeid());

    m_oLearnerSender.Ack(oPaxosMsg.instanceid(), oPaxosMsg.nodeid());
}

void Learner :: OnSendNowInstanceID(const PaxosMsg & oPaxosMsg)
{
    BP->GetLearnerBP()->OnSendNowInstanceID();

    PLGHead("START Msg.InstanceID %lu Now.InstanceID %lu Msg.from_nodeid %lu Msg.MaxInstanceID %lu systemvariables_size %zu mastervariables_size %zu",
            oPaxosMsg.instanceid(), GetInstanceID(), oPaxosMsg.nodeid(), oPaxosMsg.nowinstanceid(), 
            oPaxosMsg.systemvariables().size(), oPaxosMsg.mastervariables().size());

    SetSeenInstanceID(oPaxosMsg.nowinstanceid(), oPaxosMsg.nodeid());

    bool bSystemVariablesChange = false;
    int ret = m_poConfig->GetSystemVSM()->UpdateByCheckpoint(oPaxosMsg.systemvariables(), bSystemVariablesChange);
    if (ret == 0 && bSystemVariablesChange)
    {
        PLGHead("SystemVariables changed!, all thing need to reflesh, so skip this msg");
        return;
    }

    bool bMasterVariablesChange = false;
    if (m_poConfig->GetMasterSM() != nullptr)
    {
        ret = m_poConfig->GetMasterSM()->UpdateByCheckpoint(oPaxosMsg.mastervariables(), bMasterVariablesChange);
        if (ret == 0 && bMasterVariablesChange)
        {
            PLGHead("MasterVariables changed!");
        }
    }
    
    if (oPaxosMsg.instanceid() != GetInstanceID())
    {
        PLGErr("Lag msg, skip");
        return;
    }

    if (oPaxosMsg.nowinstanceid() <= GetInstanceID())
    {
        PLGErr("Lag msg, skip");
        return;
    }

    if (oPaxosMsg.minchoseninstanceid() > GetInstanceID())
    {
        BP->GetCheckpointBP()->NeedAskforCheckpoint();

        PLGHead("my instanceid %lu small than other's minchoseninstanceid %lu, other nodeid %lu",
                GetInstanceID(), oPaxosMsg.minchoseninstanceid(), oPaxosMsg.nodeid());

        AskforCheckpoint(oPaxosMsg.nodeid());
    }
    else if (!m_bIsIMLearning)
    {
        ComfirmAskForLearn(oPaxosMsg.nodeid());
    }
}

void Learner :: OnProposerSendSuccess(const PaxosMsg & oPaxosMsg)
{
    BP->GetLearnerBP()->OnProposerSendSuccess();

    PLGHead("START Msg.InstanceID %lu Now.InstanceID %lu Msg.ProposalID %lu State.AcceptedID %lu "
            "State.AcceptedNodeID %lu, Msg.from_nodeid %lu",
            oPaxosMsg.instanceid(), GetInstanceID(), oPaxosMsg.proposalid(), 
            m_poAcceptor->GetAcceptorState()->GetAcceptedBallot().m_llProposalID,
            m_poAcceptor->GetAcceptorState()->GetAcceptedBallot().m_llNodeID, 
            oPaxosMsg.nodeid());

    if (oPaxosMsg.instanceid() != GetInstanceID())
    {
        //Instance id not same, that means not in the same instance, ignord.
        PLGDebug("InstanceID not same, skip msg");
        return;
    }

    if (m_poAcceptor->GetAcceptorState()->GetAcceptedBallot().isnull())
    {
        //Not accept any yet.
        BP->GetLearnerBP()->OnProposerSendSuccessNotAcceptYet();
        PLGDebug("I haven't accpeted any proposal");
        return;
    }

    BallotNumber oBallot(oPaxosMsg.proposalid(), oPaxosMsg.nodeid());

    if (m_poAcceptor->GetAcceptorState()->GetAcceptedBallot()
            != oBallot)
    {
        //Proposalid not same, this accept value maybe not chosen value.
        PLGDebug("ProposalBallot not same to AcceptedBallot");
        BP->GetLearnerBP()->OnProposerSendSuccessBallotNotSame();
        return;
    }

    //learn value.
    m_oLearnerState.LearnValueWithoutWrite(
            oPaxosMsg.instanceid(),
            m_poAcceptor->GetAcceptorState()->GetAcceptedValue(),
            m_poAcceptor->GetAcceptorState()->GetChecksum());
    
    BP->GetLearnerBP()->OnProposerSendSuccessSuccessLearn();

    PLGHead("END Learn value OK, value %zu", m_poAcceptor->GetAcceptorState()->GetAcceptedValue().size());

    TransmitToFollower();
}

void Learner :: OnComfirmAskForLearn(const PaxosMsg & oPaxosMsg)
{
    BP->GetLearnerBP()->OnComfirmAskForLearn();

    PLGHead("START Msg.InstanceID %lu Msg.from_nodeid %lu", oPaxosMsg.instanceid(), oPaxosMsg.nodeid());

    if (!m_oLearnerSender.Comfirm(oPaxosMsg.instanceid(), oPaxosMsg.nodeid()))
    {
        BP->GetLearnerBP()->OnComfirmAskForLearnGetLockFail();

        PLGErr("LearnerSender comfirm fail, maybe is lag msg");
        return;
    }

    PLGImp("OK, success comfirm");
}

void Learner :: AskforLearn()
{
    BP->GetLearnerBP()->AskforLearn();

    PLGHead("START");

    PaxosMsg oPaxosMsg;

    oPaxosMsg.set_instanceid(GetInstanceID());
    oPaxosMsg.set_nodeid(m_poConfig->GetMyNodeID());
    oPaxosMsg.set_msgtype(MsgType_PaxosLearner_AskforLearn);

    if (m_poConfig->IsIMFollower())
    {
        //this is not proposal nodeid, just use this val to bring followto nodeid info.
        oPaxosMsg.set_proposalnodeid(m_poConfig->GetFollowToNodeID());
    }

    PLGHead("END InstanceID %lu MyNodeID %lu", oPaxosMsg.instanceid(), oPaxosMsg.nodeid());

    BroadcastMessage(oPaxosMsg, BroadcastMessage_Type_RunSelf_None, Message_SendType_TCP);
    BroadcastMessageToTempNode(oPaxosMsg, Message_SendType_UDP);
}