Exemplo n.º 1
0
void clsEntityWorker::CheckForCatchUp(EntityInfo_t *ptEntityInfo,
		uint32_t iGlobalMaxChosenEntry)
{
	uint32_t iEntityID = ptEntityInfo->iEntityID;
	uint32_t iLocalMaxChosenEntry = ptEntityInfo->iMaxChosenEntry;

	CertainLogError("iEntityID %u iLocalMax %u iGlobalMax %u",
			iEntityID, iLocalMaxChosenEntry, iGlobalMaxChosenEntry);

	for (uint32_t iEntry = iLocalMaxChosenEntry + 1;
			iEntry <= iGlobalMaxChosenEntry; ++iEntry)
	{
		EntryInfo_t *ptInfo = m_poEntryMng->FindEntryInfo(iEntityID, iEntry);
		if (ptInfo == NULL)
		{
			ptInfo = m_poEntryMng->CreateEntryInfo(iEntityID, iEntry);
			assert(ptInfo != NULL);
			BroadcastToRemote(iEntityID, iEntry, NULL);
		}
		else
		{
			CertainLogDebug("EntryInfo Found: iEntityID %u iEntry %u",
					iEntityID, iEntry);
		}
	}
}
Exemplo n.º 2
0
void clsEntityWorker::Run()
{
	SetThreadTitle("entity_%u_%u", m_iLocalAcceptorID, m_iWorkerID);
	CertainLogDebug("worker_id %u run", m_iWorkerID);

	while (1)
	{
		bool bHasWork = false;

		// 1.Do with IO request.
		clsCmdBase *poCmd = NULL;
		int iRet = m_poIOReqQueue->TakeByOneThread(&poCmd);
		if (iRet == 0)
		{
			assert(poCmd != NULL);
			bHasWork = true;

			iRet = DoWithIOReq(poCmd);
			if (iRet < 0)
			{
				CertainLogError("DoWithIOReq ret %d cmd %s",
						iRet, poCmd->GetTextCmd().c_str());
			}
			// iRet = 1: reuse the ptr, use clsRefPtr in future
			if (iRet != 1)
			{
				delete poCmd, poCmd = NULL;
			}
		}

		// 2.Do with PLog response.
		clsPaxosCmd *poPaxosCmd;
		iRet = m_poPLogRspQueue->TakeByOneThread(&poPaxosCmd);
		if (iRet == 0)
		{
			bHasWork = true;

			iRet = DoWithPLogRsp(poPaxosCmd);
			if (iRet < 0)
			{
				const EntryRecord_t &tSrcRecord = poPaxosCmd->GetSrcRecord();
				CertainLogError("DoWithPLogRsp ret %d record %s",
						iRet, EntryRecordToString(tSrcRecord).c_str());
			}
			delete poPaxosCmd, poPaxosCmd = NULL;
		}

		// 3.Do with Timeout EntryState.
		iRet = DoWithTimeout();
		AssertEqual(iRet, 0);

		if (!bHasWork)
		{
			usleep(1);
		}
	}
}
Exemplo n.º 3
0
// iPtr is for check only.
int clsAsyncPipeMng::SyncWriteByPipeIdx(uint32_t iIdx, uintptr_t iPtr)
{
    CertainLogDebug("iIdx %u iPtr %lu", iIdx, iPtr);
    AssertLess(iIdx, MAX_ASYNC_PIPE_NUM);

    int iOutFD = m_aaAsyncPipe[iIdx][1];
    int iRet = write(iOutFD, &iPtr, sizeof(iPtr));
    AssertEqual(iRet, sizeof(iPtr));
    return 0;
}
Exemplo n.º 4
0
int clsAsyncPipeMng::SyncWaitByPipeIdx(uint32_t iIdx, uintptr_t iPtr)
{
    CertainLogDebug("iIdx %u iPtr %lu", iIdx, iPtr);
    int iInFD = m_aaAsyncPipe[iIdx][0];

    struct pollfd PollFd; 
    PollFd.events = POLLIN | POLLERR;
    PollFd.fd = iInFD;

    int iEventCnt = 0;
    int iTimeout = 1000;
    int iTimeoutCnt = 0;

    while (true)
    {
        errno = 0;
        iEventCnt = poll(&PollFd, 1, iTimeout);
        if (errno == EINTR)
        {
            continue;
        }
        else if (iEventCnt > 0)
        {
            break;
        }
        else
        {
            iTimeoutCnt++;
            OSS::ReportPollTimeout();

            // It won't be timeout forever.
            CertainLogError("iPtr %lu PipeIdx %u iTimeoutCnt %d",
                    iPtr, iIdx, iTimeoutCnt);
        }
    }

    if (iEventCnt <= 0)
    {
        return -1;
    }

    uintptr_t iRetPtr;
    int iRet = read(iInFD, &iRetPtr, sizeof(iRetPtr));
    AssertEqual(iRet, sizeof(iRetPtr));

    if (iRetPtr != iPtr)
    {
        CertainLogFatal("BUG %lu %lu", iRetPtr, iPtr);
        return eRetCodePipePtrErr;
    }

    return 0;
}
Exemplo n.º 5
0
int clsConnWorker::RecvNegoMsg(clsNegoContext *poNegoCtx)
{
	int iRet;

	const ConnInfo_t &tConnInfo = poNegoCtx->GetConnInfo();
	int iFD = tConnInfo.iFD;

	uint8_t acNego[1];

	while (1)
	{
		iRet = read(iFD, acNego, 1);
		if (iRet == -1)
		{
			if (errno == EAGAIN || errno == EINTR)
			{
				continue;
			}

			CertainLogError("fd %d errno %d", iFD, errno);
			return -1;
		}
		else if (iRet == 0)
		{
			Endpoint_t tPeerAddr = tConnInfo.tPeerAddr;
			CertainLogError("closed by peer %s:%hu fd %d",
					tPeerAddr.sIP, tPeerAddr.hPort, iFD);
			return -2;
		}
		else
		{
			AssertEqual(iRet, 1);
			break;
		}
	}

	// (TODO)rock: uncomment this
	//uint32_t iAcceptorID = uint32_t(acNego[0]);
	uint32_t iAcceptorID = uint32_t(acNego[0] - '0');
	poNegoCtx->SetAcceptorID(iAcceptorID);

	CertainLogDebug("iFD %d local %s:%hu peer %s:%hu iAcceptorID %u",
			iFD, tConnInfo.tLocalAddr.sIP, tConnInfo.tLocalAddr.hPort,
			tConnInfo.tPeerAddr.sIP, tConnInfo.tPeerAddr.hPort, iAcceptorID);

	return 0;
}
Exemplo n.º 6
0
int clsEntityWorker::DoWithTimeout()
{
	int iExpiredCnt = 0;
	EntryInfo_t *ptInfo;

	while ((ptInfo = m_poEntryMng->TakeTimeout()) != NULL)
	{
		uint32_t iEntityID = ptInfo->iEntityID;
		uint32_t iEntry = ptInfo->iEntry;

		if (ptInfo->bUncertain)
		{
			m_poEntryMng->AddTimeout(ptInfo, 10);
			CertainLogDebug("iEntityID %u iEntry %u wait 10ms for uncertain",
					iEntityID, iEntry);
			continue;
		}

		// (TODO)rock: it must retry, when it's uncertain
		EntityInfo_t *ptEntityInfo = m_poEntityMng->GetEntityInfo(iEntityID);

		if (ptInfo->bDBPending || ptEntityInfo->bDBPending)
		{
			assert(ptInfo->bDBPending && ptEntityInfo->bDBPending);
			ptInfo->bDBPending = false;
			ptEntityInfo->bDBPending = false;
		}

		if (ptEntityInfo->poClientCmd != NULL
				&& ptEntityInfo->poClientCmd->GetEntry() == iEntry)
		{
			InvalidClientCmd(ptEntityInfo, " : Timeout");
		}

		iExpiredCnt++;

		ActivateEntry(ptInfo);
	}

	if (iExpiredCnt > 0)
	{
		CertainLogError("iExpiredCnt %d", iExpiredCnt);
	}

	return 0;
}
Exemplo n.º 7
0
void clsEntityWorker::CleanUpEntry(EntityInfo_t *ptEntityInfo,
		EntryInfo_t *ptInfo)
{
	uint32_t iEntityID = ptInfo->iEntityID;
	uint32_t iEntry = ptInfo->iEntry;

	CertainLogDebug("iEntityID %u iEntry %u", iEntityID, iEntry);

	if (ptEntityInfo->poClientCmd != NULL
		&& ptEntityInfo->poClientCmd->GetEntry() == ptInfo->iEntry)
	{
		delete ptEntityInfo->poClientCmd;
		ptEntityInfo->poClientCmd = NULL;
	}

	m_poEntryMng->DestroyEntryInfo(ptInfo);
}
Exemplo n.º 8
0
void clsConnWorker::Run()
{
	uint32_t iLocalAcceptorID = m_poConf->GetLocalAcceptorID();
	SetThreadTitle("conn_%u", iLocalAcceptorID);
	CertainLogDebug("run");

	int iRet = AddAllListen();
	if (iRet != 0)
	{
		CertainLogError("AddAllListen ret %d", iRet);
		exit(-1);
	}

	while (1)
	{
		m_poEpollIO->RunOnce(-1);
	}
}
Exemplo n.º 9
0
void clsEntityWorker::SyncEntryRecord(EntryInfo_t *ptInfo,
		clsPaxosCmd *poPaxosCmd)
{
	uint32_t iAcceptorID = poPaxosCmd->GetDestAcceptorID();

	uint32_t iEntityID = ptInfo->iEntityID;
	uint32_t iEntry = ptInfo->iEntry;

	clsEntryStateMachine *poMachine = ptInfo->poMachine;
	const EntryRecord_t &tSrcRecord = poMachine->GetRecord(m_iLocalAcceptorID);

	CertainLogDebug("state %d bRemoteUpdated %u bBroadcast %u record %s",
			poMachine->GetEntryState(), ptInfo->bRemoteUpdated,
			ptInfo->bBroadcast, EntryRecordToString(tSrcRecord).c_str());

	if (ptInfo->bBroadcast)
	{
		AssertEqual(iAcceptorID, INVALID_ACCEPTOR_ID);

		BroadcastToRemote(iEntityID, iEntry, poMachine);
		ptInfo->bBroadcast = false;
		ptInfo->bRemoteUpdated = false;
	}

	if (ptInfo->bRemoteUpdated)
	{
		AssertNotEqual(iAcceptorID, INVALID_ACCEPTOR_ID);

		const EntryRecord_t &tDestRecord = poMachine->GetRecord(iAcceptorID);

		// If dest has been chosen, SendDataPacket makes no matter.
		if (!tDestRecord.bChosen)
		{
			clsPaxosCmd *po = new clsPaxosCmd(m_iLocalAcceptorID, iEntityID,
					iEntry, &tSrcRecord, &tDestRecord);

			po->SetDestAcceptorID(iAcceptorID);
			m_poIOWorkerRouter->GoAndDeleteIfFailed(po);
		}
		ptInfo->bRemoteUpdated = false;
	}
}
Exemplo n.º 10
0
int clsConnWorker::AcceptOneFD(clsListenContext *poContext,
		ConnInfo_t &tConnInfo)
{
	int iListenFD = poContext->GetFD();

	struct sockaddr_in tSockAddr;
	socklen_t tLen = sizeof(tSockAddr);

	int iFD = accept(iListenFD, (struct sockaddr *)(&tSockAddr), &tLen);
	if (iFD == -1)
	{
		if (errno == EAGAIN)
		{
			return 1;
		}

		// (TODO)rock: close it
		CertainLogError("accept ret -1 errno %d", errno);
		return -1;
	}

	int iFlags = fcntl(iFD, F_GETFL, 0);
	int iRet = fcntl(iFD, F_SETFL, iFlags | O_NONBLOCK);
	AssertEqual(iRet, 0);

	Endpoint_t tPeerAddr;
	strcpy(tPeerAddr.sIP, inet_ntoa(tSockAddr.sin_addr));
	tPeerAddr.hPort = ntohs(tSockAddr.sin_port);

	tConnInfo.tLocalAddr = poContext->GetLocalAddr();
	tConnInfo.tPeerAddr = tPeerAddr;
	tConnInfo.iFD = iFD;

	CertainLogDebug("iFD %d local %s:%hu peer %s:%hu",
			iFD, tConnInfo.tLocalAddr.sIP, tConnInfo.tLocalAddr.hPort,
			tConnInfo.tPeerAddr.sIP, tConnInfo.tPeerAddr.hPort);

	return 0;
}
Exemplo n.º 11
0
int clsConnInfoMng::PutByOneThread(uint32_t iAcceptorID,
		const ConnInfo_t &tConnInfo)
{
	AssertNotEqual(iAcceptorID, m_iLocalAcceptorID);

	CertainLogDebug("iAcceptorID %u local %s:%hu peer %s:%hu",
			iAcceptorID, tConnInfo.tLocalAddr.sIP, tConnInfo.tLocalAddr.hPort,
			tConnInfo.tPeerAddr.sIP, tConnInfo.tPeerAddr.hPort);

	clsThreadLock oLock(&m_oMutex);

	if (iAcceptorID == INVALID_ACCEPTOR_ID)
	{
		m_tExtConnQueue.push(tConnInfo);
	}
	else
	{
		AssertLess(iAcceptorID, m_iAcceptorNum);
		m_vecIntConnQueue[iAcceptorID].push(tConnInfo);
	}

	return 0;
}
Exemplo n.º 12
0
int clsEntityWorker::DoWithIOReq(clsCmdBase *poCmd)
{
	CertainLogDebug("cmd: %s", poCmd->GetTextCmd().c_str());
	clsPaxosCmd *poPaxosCmd = NULL;
	clsClientCmd *poClientCmd = NULL;

	switch (poCmd->GetCmdID())
	{
		case kNoopCmd:
		case kSimpleCmd:
			poClientCmd = dynamic_cast<clsClientCmd *>(poCmd);
			return DoWithClientCmd(poClientCmd);

		case kPaxosCmd:
			poPaxosCmd = dynamic_cast<clsPaxosCmd *>(poCmd);
			return DoWithPaxosCmd(poPaxosCmd);

		default:
			CertainLogError("cmd: %s", poCmd->GetTextCmd().c_str());
			assert(false);
	}

	return 0;
}
Exemplo n.º 13
0
int clsEntityWorker::DoWithPLogRsp(clsPaxosCmd *poPaxosCmd)
{
	int iRet;
	uint32_t iEntityID = poPaxosCmd->GetEntityID();
	uint32_t iEntry = poPaxosCmd->GetEntry();

	CertainLogDebug("iEntityID %u iEntry %u", iEntityID, iEntry);

	EntityInfo_t *ptEntityInfo = m_poEntityMng->GetEntityInfo(iEntityID);
	assert(ptEntityInfo != NULL);

	EntryInfo_t *ptInfo = m_poEntryMng->FindEntryInfo(iEntityID, iEntry);
	assert(ptInfo != NULL);

	assert(ptInfo->bUncertain);
	ptInfo->bUncertain = false;

	SyncEntryRecord(ptInfo, poPaxosCmd);

	clsEntryStateMachine *poMachine = ptInfo->poMachine;
	const EntryRecord_t &tSrcRecord = poMachine->GetRecord(m_iLocalAcceptorID);

	if (CERTAIN_DEBUG)
	{
		string strInfoRecord = EntryRecordToString(poPaxosCmd->GetSrcRecord());
		string strMachineRecord = EntryRecordToString(tSrcRecord);
		assert(strInfoRecord == strMachineRecord);
	}

	list<clsPaxosCmd *> tWaitingList;
	swap(*ptInfo->ptWaitingList, tWaitingList);

	if (tWaitingList.size() > 0)
	{
		CertainLogDebug("iEntityID %u iEntry %u tWaitingList.size() %lu",
				iEntityID, iEntry, tWaitingList.size());
	}

	if (poMachine->GetEntryState() == kEntryStateChosen)
	{
		clsCmdFactory *poCmdFactory = clsCmdFactory::GetInstance();
		// (TODO)rock: reduce PB once
		clsCmdBase *poCmd = poCmdFactory->CreateCmd(
				tSrcRecord.strValue.c_str(), tSrcRecord.strValue.size());

		clsClientCmd *poClientCmd = ptEntityInfo->poClientCmd;
		clsClientCmd *poChosenCmd = dynamic_cast<clsClientCmd *>(poCmd);

		if (poClientCmd != NULL && poClientCmd->GetEntry() == iEntry)
		{
			CertainLogDebug("cli_cmd: %s chosen: %s",
					poClientCmd->GetTextCmd().c_str(),
					EntryRecordToString(tSrcRecord).c_str());

			if (poClientCmd->GetUUID() == poChosenCmd->GetUUID())
			{
				delete poChosenCmd, poChosenCmd = NULL;

				poChosenCmd = ptEntityInfo->poClientCmd;
				ptEntityInfo->poClientCmd = NULL;

				poChosenCmd->SetNeedRsp(true);

				if (ptEntityInfo->iMaxEntryChosenByLocal < iEntry)
				{
					ptEntityInfo->iMaxEntryChosenByLocal = iEntry;
				}
			}
			else
			{
				CertainLogError("uuid (%lu %lu) cmd %s",
						poClientCmd->GetUUID(), poChosenCmd->GetUUID(),
						poClientCmd->GetTextCmd().c_str());

				InvalidClientCmd(ptEntityInfo);
			}
		}

		// (TODO)rock: Push Rsp here instead of in DB thread
		poChosenCmd->SetEntry(iEntry);
		iRet = m_poDBReqQueue->PushByMultiThread(poChosenCmd);
		AssertEqual(iRet, 0); // (TODO)rock: dbpending

		if (ptEntityInfo->iMaxChosenEntry < iEntry)
		{
			ptEntityInfo->iMaxChosenEntry = iEntry;
		}

		CleanUpEntry(ptEntityInfo, ptInfo);
	}

	iRet = DoWithWaitingList(&tWaitingList);
	if (iRet != 0)
	{
		CertainLogError("DoWithWaitingList ret %d", iRet);
	}

	return 0;
}
Exemplo n.º 14
0
int clsEntityWorker::DoWithPaxosCmd(clsPaxosCmd *poPaxosCmd)
{
	int iRet;

	uint32_t iAcceptorID = poPaxosCmd->GetSrcAcceptorID();
	uint32_t iEntityID = poPaxosCmd->GetEntityID();
	uint32_t iEntry = poPaxosCmd->GetEntry();

	AssertNotEqual(iAcceptorID, m_iLocalAcceptorID);

	EntityInfo_t *ptEntityInfo = m_poEntityMng->GetEntityInfo(iEntityID);
	assert(ptEntityInfo != NULL);

	CertainLogDebug("iAcceptorID %u iEntityID %u iEntry %u iMaxChosenEntry %u",
			iAcceptorID, iEntityID, iEntry, ptEntityInfo->iMaxChosenEntry);

	if (ptEntityInfo->iMaxChosenEntry >= iEntry)
	{
		EntryInfo_t *ptInfo = m_poEntryMng->FindEntryInfo(iEntityID, iEntry);

		const EntryRecord_t &tRecord = poPaxosCmd->GetSrcRecord();

		// ptInfo == NULL means chosen, as ptInfo is cleanup once it's chosen.

		if (ptInfo == NULL)
		{
			if (tRecord.bChosen)
			{
				return 0;
			}

			clsPaxosCmd *po = new clsPaxosCmd(m_iLocalAcceptorID,
					iEntityID, iEntry);
			po->SetDestAcceptorID(iAcceptorID);
			po->SetForCatchUp(true);

			iRet = m_poPLogReqQueue->PushByOneThread(po);
			if (iRet != 0)
			{
				CertainLogError("PushByOneThread ret %d", iRet);
				delete po, po = NULL;

				return -1;
			}

			return 0;
		}

		CertainLogError("iEntityID %u iEntry %u iMaxChosenEntry %u",
				iEntityID, iEntry, ptEntityInfo->iMaxChosenEntry);
	}

	uint32_t iGlobalMaxChosenEntry = iEntry - 1;
	if (ptEntityInfo->iMaxChosenEntry < iGlobalMaxChosenEntry)
	{
		CheckForCatchUp(ptEntityInfo, iGlobalMaxChosenEntry);
		ptEntityInfo->iMaxChosenEntry = iGlobalMaxChosenEntry;
	}

	EntryInfo_t *ptInfo = m_poEntryMng->FindEntryInfo(iEntityID, iEntry);
	if (ptInfo == NULL)
	{
		ptInfo = m_poEntryMng->CreateEntryInfo(iEntityID, iEntry);
		assert(ptInfo != NULL);
	}

	if (ptInfo->bUncertain)
	{
		uint32_t iWaitingListSize = ptInfo->ptWaitingList->size();
		if (iWaitingListSize > 10)
		{
			CertainLogError("iEntityID %u iEntry %u iWaitingListSize %u",
					iEntityID, iEntry, iWaitingListSize);
			return -2;
		}

		ptInfo->ptWaitingList->push_back(poPaxosCmd);
		return 1;
	}

	assert(ptInfo->poMachine->GetEntryState() != kEntryStateChosen);

	// It should have created the ptInfo for the entry not more than
	// iMaxChosenEntry, and it won't be cleanup until chosen.
	assert(ptInfo->poMachine->GetEntryState() != kEntryStateChosen);

	iRet = UpdateRecord(poPaxosCmd);
	if (iRet != 0)
	{
		CertainLogError("UpdateRecord ret %d", iRet);
	}

	return 0;
}
Exemplo n.º 15
0
int clsEntityWorker::UpdateRecord(clsPaxosCmd *poPaxosCmd)
{
	uint32_t iAcceptorID = poPaxosCmd->GetSrcAcceptorID();
	uint32_t iEntityID = poPaxosCmd->GetEntityID();
	uint32_t iEntry = poPaxosCmd->GetEntry();

	CertainLogDebug("iAcceptorID %u iEntityID %u iEntry %u",
			iAcceptorID, iEntityID, iEntry);

	EntityInfo_t *ptEntityInfo = m_poEntityMng->GetEntityInfo(iEntityID);
	assert(ptEntityInfo != NULL);

	EntryInfo_t *ptInfo = m_poEntryMng->FindEntryInfo(iEntityID, iEntry);
	assert(ptInfo != NULL);

	clsEntryStateMachine *poMachine = ptInfo->poMachine;
	const EntryRecord_t tOldRecord = poMachine->GetRecord(m_iLocalAcceptorID);

	CertainLogDebug("before update cmd: %s state %u",
			poPaxosCmd->GetTextCmd().c_str(), poMachine->GetEntryState());

	const EntryRecord_t &tSrcRecord = poPaxosCmd->GetSrcRecord();
	const EntryRecord_t &tDestRecord = poPaxosCmd->GetDestRecord();
	poMachine->Update(m_iLocalAcceptorID, iAcceptorID, tSrcRecord);

	CertainLogDebug("after  update cmd: %s state %u",
			poPaxosCmd->GetTextCmd().c_str(), poMachine->GetEntryState());

	if (poMachine->GetEntryState() == kEntryStateMajorityPromise)
	{
		string strValue;

		if (ptEntityInfo->poClientCmd != NULL
			&& ptEntityInfo->poClientCmd->GetEntry() == iEntry)
		{
			strValue = MakePaxosValue(ptEntityInfo->poClientCmd, true);
		}
		else
		{
			clsNoopCmd oNoopCmd(iEntityID, iEntry);
			strValue = MakePaxosValue(&oNoopCmd, false);
		}

		if (poMachine->AcceptOnMajorityPromise(m_iLocalAcceptorID, strValue))
		{
			ptInfo->bBroadcast = true;
		}
		else
		{
			InvalidClientCmd(ptEntityInfo);
		}
	}

	if (poMachine->GetEntryState() == kEntryStateChosen)
	{
		if (!tSrcRecord.bChosen)
		{
			// only one proposer do broadcast for a proposal
			if (poMachine->IsLocalChosen(m_iLocalAcceptorID))
			{
				ptInfo->bBroadcast = true;
			}
		}
	}

	const EntryRecord_t &tNewRecord = poMachine->GetRecord(m_iLocalAcceptorID);
	ptInfo->bRemoteUpdated = IsEntryRecordUpdated(tDestRecord, tNewRecord);

	bool bLocalUpdated = IsEntryRecordUpdated(tOldRecord, tNewRecord);

	clsPaxosCmd *po = new clsPaxosCmd(m_iLocalAcceptorID,
			iEntityID, iEntry, &tNewRecord);

	if (!ptInfo->bBroadcast)
	{
		po->SetDestAcceptorID(iAcceptorID);
	}

	if (bLocalUpdated)
	{
		int iRet = m_poPLogReqQueue->PushByOneThread(po);
		if (iRet != 0)
		{
			CertainLogError("PushByOneThread ret %d", iRet);
			delete po, po = NULL;
			return 0;
		}
		ptInfo->bUncertain = true;
	}
	else
	{
		clsAutoDelete<clsPaxosCmd> oAuto(po);

		if (poMachine->IsLocalEmpty())
		{
			poMachine->SetCheckedEmpty(poPaxosCmd->GetSrcAcceptorID());
		}

		if (ptEntityInfo->poClientCmd != NULL
				&& ptEntityInfo->poClientCmd->IsReadOnly())
		{
			if (poMachine->IsReadOK())
			{
				m_poIOWorkerRouter->GoAndDeleteIfFailed(
						ptEntityInfo->poClientCmd);

				ptEntityInfo->poClientCmd = NULL;

				if (poMachine->IsLocalEmpty())
				{
					CleanUpEntry(ptEntityInfo, ptInfo);
				}
				return 0;
			}
			else if (!poMachine->IsLocalEmpty())
			{
				InvalidClientCmd(ptEntityInfo, " : ReadFail");
			}
		}

		SyncEntryRecord(ptInfo, po);
	}

	return 0;
}
Exemplo n.º 16
0
int clsEntityWorker::DoWithClientCmd(clsClientCmd *poCmd)
{
	int iRet;
	uint32_t iEntityID = poCmd->GetEntityID();
	EntityInfo_t *ptEntityInfo = m_poEntityMng->GetEntityInfo(iEntityID);

	if (ptEntityInfo->poClientCmd != NULL
			|| (!poCmd->IsEvalOnly() && ptEntityInfo->bDBPending))
	{
		InvalidClientCmd(poCmd, " : TODO");
		//iRet = AddWaitingCmd(poCmd);
		//if (iRet < 0)
		//{
		//	CertainLogError("poWaitingCmd->Add ret %d", iRet);
		//	return -1;
		//}
		return 1;
	}

	if (poCmd->IsEvalOnly())
	{
		if (poCmd->GetEntry() != ptEntityInfo->iMaxChosenEntry + 1)
		{
			InvalidClientCmd(poCmd, " : DISCARD");
			return 1;
		}
	}

	assert(ptEntityInfo->poClientCmd == NULL);

	uint32_t iEntry = ptEntityInfo->iMaxChosenEntry + 1;

	EntryInfo_t *ptInfo = m_poEntryMng->FindEntryInfo(iEntityID, iEntry);
	if (ptInfo == NULL)
	{
		ptInfo = m_poEntryMng->CreateEntryInfo(iEntityID, iEntry);
		assert(ptInfo != NULL);
	}

	if (ptInfo->bUncertain)
	{
		InvalidClientCmd(poCmd, " : Uncertain");
		return 1;
	}

	clsEntryStateMachine *poMachine = ptInfo->poMachine;
	int iEntryState = poMachine->GetEntryState();

	CertainLogDebug("iEntityID %u iEntry %u state %d",
			iEntityID, iEntry, iEntryState);

	assert(!ptInfo->bRemoteUpdated);
	assert(!ptInfo->bBroadcast);

	// give in if has accepted remote
	if (poMachine->GetEntryState() == kEntryStateAcceptRemote)
	{
		InvalidClientCmd(poCmd, " : GiveIn");
		return 1;
	}

	poCmd->SetEntry(iEntry);
	m_poEntryMng->AddTimeout(ptInfo, 50);

	if (m_poConf->GetPLogType() == kPLogTypeRes)
	{
		if (!poCmd->IsEvalOnly())
		{
			assert(!poCmd->IsNeedRsp());

			poCmd->SetEvalOnly(true);
			iRet = m_poDBReqQueue->PushByMultiThread(poCmd);
			if (iRet != 0)
			{
				CertainLogError("PushByMultiThread ret %d", iRet);
				return -1;
			}

			ptInfo->bDBPending = true;
			ptEntityInfo->bDBPending = true;
			return 1;
		}

		poCmd->SetEvalOnly(false);
		ptInfo->bDBPending = false;
		ptEntityInfo->bDBPending = false;
	}

	ptEntityInfo->poClientCmd = poCmd;

	if (m_poConf->IsEnableReadOpt() && poCmd->IsReadOnly()
			&& poMachine->IsLocalEmpty())
	{
		poMachine->ResetAllCheckedEmpty();
		poMachine->SetCheckedEmpty(m_iLocalAcceptorID);
		BroadcastToRemote(iEntityID, iEntry, NULL, true);
		return 1;
	}

	uint32_t iProposalNum = poMachine->GetNextPreparedNum(m_iLocalAcceptorID);

	EntryRecord_t tTempRecord;
	InitEntryRecord(&tTempRecord);

	if (m_poConf->GetPaxosType() == kPaxosTypeMulti)
	{
		if (iProposalNum == m_iLocalAcceptorID + 1
			&& iEntry == ptEntityInfo->iMaxEntryChosenByLocal + 1)
		{
			tTempRecord.iAcceptedNum = iProposalNum;
			tTempRecord.iValueID = iProposalNum;
			tTempRecord.strValue = MakePaxosValue(poCmd, true);
		}
		else
		{
			iProposalNum = poMachine->GetNextPreparedNum(m_iLocalAcceptorID);
		}
	}

	tTempRecord.iPreparedNum = iProposalNum;
	tTempRecord.iPromisedNum = iProposalNum;

	iEntryState = poMachine->Update(m_iLocalAcceptorID,
			m_iLocalAcceptorID, tTempRecord);

	const EntryRecord_t &tUpdatedRecord = poMachine->GetRecord(
			m_iLocalAcceptorID);

	clsPaxosCmd *poPaxosCmd = new clsPaxosCmd(m_iLocalAcceptorID,
			iEntityID, iEntry, &tUpdatedRecord);

	CertainLogDebug("record: %s state %d",
			EntryRecordToString(tUpdatedRecord).c_str(), iEntryState);

	iRet = m_poPLogReqQueue->PushByOneThread(poPaxosCmd);
	if (iRet != 0)
	{
		CertainLogError("PushByOneThread ret %d", iRet);
		delete poPaxosCmd, poPaxosCmd = NULL;
		return -1;
	}

	// It's uncertain even if fail to push to PLogReqQueue.
	// It will retry when timeout, as this update has happened actually.
	ptInfo->bUncertain = true;
	ptInfo->bBroadcast = true;

	return 1;
}