Tx BlockDataViewer::getTxByHash(HashString const & txhash) const { checkBDMisReady(); if (config().armoryDbType == ARMORY_DB_SUPER) { LMDBEnv::Transaction tx(db_->dbEnv_[BLKDATA].get(), LMDB::ReadOnly); TxRef txrefobj = db_->getTxRef(txhash); if (!txrefobj.isNull()) return txrefobj.attached(db_).getTxCopy(); else { // It's not in the blockchain, but maybe in the zero-conf tx list return zeroConfCont_.getTxByHash(txhash); } } else { StoredTx stx; if (db_->getStoredTx_byHash(txhash, &stx)) return stx.getTxCopy(); else return zeroConfCont_.getTxByHash(txhash); } }
Tx BlockDataViewer::getTxByHash(HashString const & txhash) const { StoredTx stx; if (db_->getStoredTx_byHash(txhash, &stx)) return stx.getTxCopy(); else return zeroConfCont_->getTxByHash(txhash); }
void ZeroConfContainer::updateZCinDB(const vector<BinaryData>& keysToWrite, const vector<BinaryData>& keysToDelete) { //should run in its own thread to make sure we can get a write tx DB_SELECT dbs = BLKDATA; if (db_->getDbType() != ARMORY_DB_SUPER) dbs = HISTORY; LMDBEnv::Transaction tx; db_->beginDBTransaction(&tx, dbs, LMDB::ReadWrite); for (auto& key : keysToWrite) { StoredTx zcTx; zcTx.createFromTx(txMap_[key], true, true); db_->putStoredZC(zcTx, key); } for (auto& key : keysToDelete) { BinaryData keyWithPrefix; if (key.getSize() == 6) { keyWithPrefix.resize(7); uint8_t* keyptr = keyWithPrefix.getPtr(); keyptr[0] = DB_PREFIX_ZCDATA; memcpy(keyptr + 1, key.getPtr(), 6); } else keyWithPrefix = key; LDBIter dbIter(db_->getIterator(dbs)); if (!dbIter.seekTo(keyWithPrefix)) continue; vector<BinaryData> ktd; do { BinaryDataRef thisKey = dbIter.getKeyRef(); if (!thisKey.startsWith(keyWithPrefix)) break; ktd.push_back(thisKey); } while (dbIter.advanceAndRead(DB_PREFIX_ZCDATA)); for (auto Key : ktd) db_->deleteValue(dbs, Key); } }
void ZeroConfContainer::loadZeroConfMempool( function<bool(const BinaryData&)> filter, bool clearMempool) { //run this in its own scope so the iter and tx are closed in order to open //RW tx afterwards { auto dbs = db_->getDbSelect(HISTORY); LMDBEnv::Transaction tx; db_->beginDBTransaction(&tx, dbs, LMDB::ReadOnly); LDBIter dbIter(db_->getIterator(dbs)); if (!dbIter.seekToStartsWith(DB_PREFIX_ZCDATA)) { enabled_ = true; return; } do { BinaryDataRef zcKey = dbIter.getKeyRef(); if (zcKey.getSize() == 7) { //Tx, grab it from DB StoredTx zcStx; db_->getStoredZcTx(zcStx, zcKey); //add to newZCMap_ Tx& zcTx = newZCMap_[zcKey.getSliceCopy(1, 6)]; zcTx = Tx(zcStx.getSerializedTx()); zcTx.setTxTime(zcStx.unixTime_); } else if (zcKey.getSize() == 9) { //TxOut, ignore it continue; } else { //shouldn't hit this LOGERR << "Unknown key found in ZC mempool"; break; } } while (dbIter.advanceAndRead(DB_PREFIX_ZCDATA)); } if (clearMempool == true) { vector<BinaryData> keysToWrite, keysToDelete; for (const auto& zcTx : newZCMap_) keysToDelete.push_back(zcTx.first); newZCMap_.clear(); updateZCinDB(keysToWrite, keysToDelete); } else if (newZCMap_.size()) { //copy newZCmap_ to keep the pre parse ZC map auto oldZCMap = newZCMap_; //now parse the new ZC parseNewZC(filter); //set the zckey to the highest used index if (txMap_.size() > 0) { BinaryData topZcKey = txMap_.rbegin()->first; topId_.store(READ_UINT32_BE(topZcKey.getSliceCopy(2, 4)) +1); } //intersect oldZCMap and txMap_ to figure out the invalidated ZCs vector<BinaryData> keysToWrite, keysToDelete; for (const auto& zcTx : oldZCMap) { if (txMap_.find(zcTx.first) == txMap_.end()) keysToDelete.push_back(zcTx.first); } //no need to run this in a side thread, this code only runs when we have //full control over the main thread updateZCinDB(keysToWrite, keysToDelete); } enabled_ = true; }