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;
}
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;
}