C++ (Cpp) MasterOperator::version Examples

Example #1

File: master_sm.cpp Project: LngMH/phxpaxos

int MasterStateMachine :: LearnMaster(
        const uint64_t llInstanceID, 
        const MasterOperator & oMasterOper, 
        const uint64_t llAbsMasterTimeout)
{
    ScopedLock<Mutex> oLockGuard(m_oMutex);

    if (oMasterOper.version() != m_llMasterVersion)
    {
        PLG1Err("version conflit, op version %lu now master version %lu",
                oMasterOper.version(), m_llMasterVersion);
        return 0;
    }

    int ret = UpdateMasterToStore(oMasterOper.nodeid(), llInstanceID, oMasterOper.timeout());
    if (ret != 0)
    {
        PLG1Err("UpdateMasterToStore fail, ret %d", ret);
        return -1;
    }

    m_iMasterNodeID = oMasterOper.nodeid();
    if (m_iMasterNodeID == m_iMyNodeID)
    {
        //self be master
        //use local abstimeout
        m_llAbsExpireTime = llAbsMasterTimeout;

        PLG1Head("Be master success, absexpiretime %lu", m_llAbsExpireTime);
    }
    else
    {
        //other be master
        //use new start timeout
        m_llAbsExpireTime = Time::GetTimestampMS() + oMasterOper.timeout();

        PLG1Head("Ohter be master, absexpiretime %lu", m_llAbsExpireTime);
    }

    m_iLeaseTime = oMasterOper.timeout();
    m_llMasterVersion = llInstanceID;

    PLG1Imp("OK, masternodeid %lu version %lu abstimeout %lu",
            m_iMasterNodeID, m_llMasterVersion, m_llAbsExpireTime);

    return 0;
}

Example #2

File: master_sm.cpp Project: chaozh/phxpaxos

int MasterStateMachine :: LearnMaster(
        const uint64_t llInstanceID, 
        const MasterOperator & oMasterOper, 
        const uint64_t llAbsMasterTimeout)
{
    std::lock_guard<std::mutex> oLockGuard(m_oMutex);

    PLG1Debug("my last version %lu other last version %lu this version %lu instanceid %lu",
            m_llMasterVersion, oMasterOper.lastversion(), oMasterOper.version(), llInstanceID);

    if (oMasterOper.lastversion() != 0
            && llInstanceID > m_llMasterVersion
            && oMasterOper.lastversion() != m_llMasterVersion)
    {
        BP->GetMasterBP()->MasterSMInconsistent();
        PLG1Err("other last version %lu not same to my last version %lu, instanceid %lu",
                oMasterOper.lastversion(), m_llMasterVersion, llInstanceID);

        PLG1Err("try to fix, set my master version %lu as other last version %lu, instanceid %lu",
                m_llMasterVersion, oMasterOper.lastversion(), llInstanceID);
        m_llMasterVersion = oMasterOper.lastversion();
    }

    if (oMasterOper.version() != m_llMasterVersion)
    {
        PLG1Debug("version conflit, op version %lu now master version %lu",
                oMasterOper.version(), m_llMasterVersion);
        return 0;
    }

    int ret = UpdateMasterToStore(oMasterOper.nodeid(), llInstanceID, oMasterOper.timeout());
    if (ret != 0)
    {
        PLG1Err("UpdateMasterToStore fail, ret %d", ret);
        return -1;
    }

    bool bMasterChange = false;
    if (m_iMasterNodeID != oMasterOper.nodeid())
    {
        bMasterChange = true;
    }

    m_iMasterNodeID = oMasterOper.nodeid();
    if (m_iMasterNodeID == m_iMyNodeID)
    {
        //self be master
        //use local abstimeout
        m_llAbsExpireTime = llAbsMasterTimeout;

        BP->GetMasterBP()->SuccessBeMaster();
        PLG1Head("Be master success, absexpiretime %lu", m_llAbsExpireTime);
    }
    else
    {
        //other be master
        //use new start timeout
        m_llAbsExpireTime = Time::GetSteadyClockMS() + oMasterOper.timeout();

        BP->GetMasterBP()->OtherBeMaster();
        PLG1Head("Ohter be master, absexpiretime %lu", m_llAbsExpireTime);
    }

    m_iLeaseTime = oMasterOper.timeout();
    m_llMasterVersion = llInstanceID;

    if (bMasterChange)
    {
        if (m_pMasterChangeCallback != nullptr)
        {
            m_pMasterChangeCallback(m_iMyGroupIdx, NodeInfo(m_iMasterNodeID), m_llMasterVersion);
        }
    }

    PLG1Imp("OK, masternodeid %lu version %lu abstimeout %lu",
            m_iMasterNodeID, m_llMasterVersion, m_llAbsExpireTime);

    return 0;
}