C++ (Cpp) PaxosMsg::flagの例

コード例 #1

ファイル: learner.cpp プロジェクト: BLiYing/phxpaxos

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());
    }
}