mirror of
https://github.com/Xahau/xahaud.git
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95 lines
1.9 KiB
C++
95 lines
1.9 KiB
C++
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#include "TransactionMaster.h"
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#include <boost/bind.hpp>
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#include "Application.h"
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#ifndef CACHED_TRANSACTION_NUM
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#define CACHED_TRANSACTION_NUM 65536
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#endif
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#ifndef CACHED_TRANSACTION_AGE
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#define CACHED_TRANSACTION_AGE 1800
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#endif
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TransactionMaster::TransactionMaster() : mCache("TransactionCache", CACHED_TRANSACTION_NUM, CACHED_TRANSACTION_AGE)
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{
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;
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}
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bool TransactionMaster::inLedger(const uint256& hash, uint32 ledger)
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{
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Transaction::pointer txn = mCache.fetch(hash);
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if (!txn)
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return false;
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txn->setStatus(COMMITTED, ledger);
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return true;
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}
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Transaction::pointer TransactionMaster::fetch(const uint256& txnID, bool checkDisk)
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{
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Transaction::pointer txn = mCache.fetch(txnID);
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if (!checkDisk || txn)
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return txn;
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txn = Transaction::load(txnID);
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if (!txn)
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return txn;
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mCache.canonicalize(txnID, txn);
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return txn;
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}
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SerializedTransaction::pointer TransactionMaster::fetch(SHAMapItem::ref item, SHAMapTreeNode::TNType type,
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bool checkDisk, uint32 uCommitLedger)
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{
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SerializedTransaction::pointer txn;
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Transaction::pointer iTx = theApp->getMasterTransaction().fetch(item->getTag(), false);
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if (!iTx)
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{
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if (type == SHAMapTreeNode::tnTRANSACTION_NM)
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{
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SerializerIterator sit(item->peekSerializer());
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txn = boost::make_shared<SerializedTransaction>(boost::ref(sit));
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}
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else if (type == SHAMapTreeNode::tnTRANSACTION_MD)
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{
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Serializer s;
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int length;
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item->peekSerializer().getVL(s.modData(), 0, length);
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SerializerIterator sit(s);
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txn = boost::make_shared<SerializedTransaction>(boost::ref(sit));
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}
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}
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else
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{
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if (uCommitLedger)
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iTx->setStatus(COMMITTED, uCommitLedger);
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txn = iTx->getSTransaction();
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}
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return txn;
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}
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bool TransactionMaster::canonicalize(Transaction::pointer& txn, bool may_be_new)
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{
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uint256 tid = txn->getID();
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if (!tid)
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return false;
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if (mCache.canonicalize(tid, txn))
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return true;
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if (may_be_new)
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txn->save();
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return false;
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}
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// vim:ts=4
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