implement sentinel-like wd selection logic (#1359)
* Only accept wd's that are more recent or have a higher hash than the current best * Fix whitespace typo * Relay current watchdog when lower priority ones are received * Fix nHashWatchdogCurrent reset conditions * expire previous current wd when a new one is found in UpdateCurrentWatchdog * fail to process votes for expired or deleted object
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@ -20,7 +20,7 @@ std::map<uint256, int64_t> mapAskedForGovernanceObject;
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int nSubmittedFinalBudget;
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const std::string CGovernanceManager::SERIALIZATION_VERSION_STRING = "CGovernanceManager-Version-9";
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const std::string CGovernanceManager::SERIALIZATION_VERSION_STRING = "CGovernanceManager-Version-10";
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CGovernanceManager::CGovernanceManager()
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: pCurrentBlockIndex(NULL),
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@ -30,6 +30,8 @@ CGovernanceManager::CGovernanceManager()
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mapSeenGovernanceObjects(),
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mapMasternodeOrphanObjects(),
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mapWatchdogObjects(),
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nHashWatchdogCurrent(),
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nTimeWatchdogCurrent(0),
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mapVoteToObject(MAX_CACHE_SIZE),
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mapInvalidVotes(MAX_CACHE_SIZE),
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mapOrphanVotes(MAX_CACHE_SIZE),
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@ -219,7 +221,7 @@ void CGovernanceManager::ProcessMessage(CNode* pfrom, std::string& strCommand, C
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govobj.UpdateSentinelVariables(); //this sets local vars in object
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if(AddGovernanceObject(govobj))
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if(AddGovernanceObject(govobj, pfrom))
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{
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LogPrintf("MNGOVERNANCEOBJECT -- %s new\n", strHash);
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govobj.Relay();
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@ -305,7 +307,7 @@ void CGovernanceManager::CheckOrphanVotes(CGovernanceObject& govobj, CGovernance
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fRateChecksEnabled = true;
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}
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bool CGovernanceManager::AddGovernanceObject(CGovernanceObject& govobj)
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bool CGovernanceManager::AddGovernanceObject(CGovernanceObject& govobj, CNode* pfrom)
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{
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LOCK2(cs_main, cs);
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std::string strError = "";
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@ -330,9 +332,9 @@ bool CGovernanceManager::AddGovernanceObject(CGovernanceObject& govobj)
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LogPrint("gobject", "CGovernanceManager::AddGovernanceObject -- Adding object: hash = %s, type = %d\n", nHash.ToString(), govobj.GetObjectType());
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if(govobj.nObjectType == GOVERNANCE_OBJECT_WATCHDOG) {
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// If it's a watchdog, make sure it fits required time bounds
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if(govobj.nObjectType == GOVERNANCE_OBJECT_WATCHDOG &&
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(govobj.GetCreationTime() < GetAdjustedTime() - GOVERNANCE_WATCHDOG_EXPIRATION_TIME ||
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if((govobj.GetCreationTime() < GetAdjustedTime() - GOVERNANCE_WATCHDOG_EXPIRATION_TIME ||
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govobj.GetCreationTime() > GetAdjustedTime() + GOVERNANCE_WATCHDOG_EXPIRATION_TIME)
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) {
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// drop it
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@ -340,6 +342,15 @@ bool CGovernanceManager::AddGovernanceObject(CGovernanceObject& govobj)
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return false;
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}
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if(!UpdateCurrentWatchdog(govobj)) {
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if(pfrom && (nHashWatchdogCurrent != uint256())) {
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pfrom->PushInventory(CInv(MSG_GOVERNANCE_OBJECT, nHashWatchdogCurrent));
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}
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LogPrint("gobject", "CGovernanceManager::AddGovernanceObject -- Watchdog not better than current: hash = %s\n", nHash.ToString());
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return false;
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}
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}
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// INSERT INTO OUR GOVERNANCE OBJECT MEMORY
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mapObjects.insert(std::make_pair(nHash, govobj));
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@ -369,6 +380,38 @@ bool CGovernanceManager::AddGovernanceObject(CGovernanceObject& govobj)
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return true;
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}
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bool CGovernanceManager::UpdateCurrentWatchdog(CGovernanceObject& watchdogNew)
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{
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bool fAccept = false;
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arith_uint256 nHashNew = UintToArith256(watchdogNew.GetHash());
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arith_uint256 nHashCurrent = UintToArith256(nHashWatchdogCurrent);
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int64_t nExpirationDelay = GOVERNANCE_WATCHDOG_EXPIRATION_TIME / 2;
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int64_t nNow = GetTime();
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if((nHashWatchdogCurrent == uint256()) ||
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(((nNow - nTimeWatchdogCurrent) > nExpirationDelay) && (nNow - watchdogNew.GetCreationTime() < nExpirationDelay)) ||
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(nHashNew > nHashCurrent)) {
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LOCK(cs);
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object_m_it it = mapObjects.find(nHashWatchdogCurrent);
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if(it != mapObjects.end()) {
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LogPrint("gobject", "CGovernanceManager::UpdateCurrentWatchdog -- Expiring previous current watchdog, hash = %s\n", nHashWatchdogCurrent.ToString());
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it->second.fExpired = true;
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if(it->second.nDeletionTime == 0) {
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it->second.nDeletionTime = nNow;
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}
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}
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nHashWatchdogCurrent = watchdogNew.GetHash();
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nTimeWatchdogCurrent = watchdogNew.GetCreationTime();
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fAccept = true;
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LogPrint("gobject", "CGovernanceManager::UpdateCurrentWatchdog -- Current watchdog updated to: hash = %s\n",
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ArithToUint256(nHashNew).ToString());
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}
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return fAccept;
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}
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void CGovernanceManager::UpdateCachesAndClean()
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{
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LogPrint("gobject", "CGovernanceManager::UpdateCachesAndClean\n");
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@ -394,6 +437,9 @@ void CGovernanceManager::UpdateCachesAndClean()
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it2->second.nDeletionTime = nNow;
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}
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}
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if(it->first == nHashWatchdogCurrent) {
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nHashWatchdogCurrent = uint256();
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}
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mapWatchdogObjects.erase(it++);
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}
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else {
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@ -435,7 +481,8 @@ void CGovernanceManager::UpdateCachesAndClean()
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continue;
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}
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std::string strHash = pObj->GetHash().ToString();
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uint256 nHash = it->first;
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std::string strHash = nHash.ToString();
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// IF CACHE IS NOT DIRTY, WHY DO THIS?
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if(pObj->IsSetDirtyCache()) {
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@ -446,6 +493,10 @@ void CGovernanceManager::UpdateCachesAndClean()
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pObj->UpdateSentinelVariables();
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}
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if(pObj->IsSetCachedDelete() && (nHash == nHashWatchdogCurrent)) {
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nHashWatchdogCurrent = uint256();
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}
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// IF DELETE=TRUE, THEN CLEAN THE MESS UP!
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int64_t nTimeSinceDeletion = GetAdjustedTime() - pObj->GetDeletionTime();
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@ -471,7 +522,7 @@ void CGovernanceManager::UpdateCachesAndClean()
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++lit;
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}
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}
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if(pObj->nObjectType == GOVERNANCE_OBJECT_WATCHDOG && pObj->IsSetCachedDelete()) {
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if(pObj->nObjectType == GOVERNANCE_OBJECT_WATCHDOG) {
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mapWatchdogObjects.erase(it->first);
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}
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mapObjects.erase(it++);
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@ -903,6 +954,12 @@ bool CGovernanceManager::ProcessVote(CNode* pfrom, const CGovernanceVote& vote,
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}
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CGovernanceObject& govobj = it->second;
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if(govobj.IsSetCachedDelete() || govobj.IsSetExpired()) {
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LogPrint("gobject", "CGovernanceObject::ProcessVote -- ignoring vote for expired or deleted object, hash = %s\n", nHashGovobj.ToString());
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return false;
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}
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bool fOk = govobj.ProcessVote(pfrom, vote, exception);
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if(fOk) {
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mapVoteToObject.Insert(nHashVote, &govobj);
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@ -236,6 +236,10 @@ private:
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hash_time_m_t mapWatchdogObjects;
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uint256 nHashWatchdogCurrent;
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int64_t nTimeWatchdogCurrent;
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object_ref_cache_t mapVoteToObject;
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vote_cache_t mapInvalidVotes;
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@ -285,7 +289,7 @@ public:
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std::vector<CGovernanceObject*> GetAllNewerThan(int64_t nMoreThanTime);
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bool IsBudgetPaymentBlock(int nBlockHeight);
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bool AddGovernanceObject (CGovernanceObject& govobj);
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bool AddGovernanceObject(CGovernanceObject& govobj, CNode* pfrom = NULL);
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std::string GetRequiredPaymentsString(int nBlockHeight);
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@ -301,6 +305,8 @@ public:
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mapObjects.clear();
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mapSeenGovernanceObjects.clear();
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mapWatchdogObjects.clear();
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nHashWatchdogCurrent = uint256();
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nTimeWatchdogCurrent = 0;
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mapVoteToObject.Clear();
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mapInvalidVotes.Clear();
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mapOrphanVotes.Clear();
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@ -327,6 +333,8 @@ public:
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READWRITE(mapOrphanVotes);
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READWRITE(mapObjects);
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READWRITE(mapWatchdogObjects);
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READWRITE(nHashWatchdogCurrent);
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READWRITE(nTimeWatchdogCurrent);
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READWRITE(mapLastMasternodeObject);
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if(ser_action.ForRead() && (strVersion != SERIALIZATION_VERSION_STRING)) {
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Clear();
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@ -415,6 +423,8 @@ private:
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void AddCachedTriggers();
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bool UpdateCurrentWatchdog(CGovernanceObject& watchdogNew);
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};
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#endif
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