117 lines
5.0 KiB
C++
117 lines
5.0 KiB
C++
// Copyright (c) 2015-2019 The PIVX developers
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// Distributed under the MIT software license, see the accompanying
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// file COPYING or http://www.opensource.org/licenses/mit-license.php.
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//
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#include "lightzagrthread.h"
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#include "main.h"
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/****** Thread ********/
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void CLightWorker::ThreadLightZAGRSimplified() {
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RenameThread("agrarian-light-thread");
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isWorkerRunning = true;
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while (true) {
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try {
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// Take a breath between requests.. TODO: Add processor usage check here
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MilliSleep(2000);
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// TODO: Future: join several similar requests into one calculation if the filter and denom match..
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CGenWit genWit = requestsQueue.pop();
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LogPrintf("%s pop work for %s \n\n", "agrarian-light-thread", genWit.toString());
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libzerocoin::ZerocoinParams *params = Params().Zerocoin_Params(false);
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CBlockIndex *pIndex = chainActive[genWit.getStartingHeight()];
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if (!pIndex) {
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// Rejects only the failed height
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rejectWork(genWit, genWit.getStartingHeight(), NON_DETERMINED);
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} else {
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LogPrintf("%s calculating work for %s \n\n", "agrarian-light-thread", genWit.toString());
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int blockHeight = pIndex->nHeight;
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if (blockHeight >= Params().Zerocoin_Block_V2_Start()) {
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// TODO: The protocol actually doesn't care about the Accumulator..
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libzerocoin::Accumulator accumulator(params, genWit.getDen(), genWit.getAccWitValue());
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libzerocoin::PublicCoin temp(params);
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libzerocoin::AccumulatorWitness witness(params, accumulator, temp);
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string strFailReason = "";
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int nMintsAdded = 0;
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CZerocoinSpendReceipt receipt;
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list<CBigNum> ret;
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int heightStop;
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bool res;
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try {
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res = CalculateAccumulatorWitnessFor(
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params,
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blockHeight,
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COMP_MAX_AMOUNT,
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genWit.getDen(),
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genWit.getFilter(),
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accumulator,
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witness,
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nMintsAdded,
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strFailReason,
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ret,
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heightStop
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);
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} catch (NotEnoughMintsException e) {
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LogPrintStr(std::string("ThreadLightZAGRSimplified: ") + e.message + "\n");
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rejectWork(genWit, blockHeight, NOT_ENOUGH_MINTS);
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continue;
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}
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if (!res) {
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// TODO: Check if the GenerateAccumulatorWitnessFor can fail for node's fault or it's just because the peer sent an illegal request..
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rejectWork(genWit, blockHeight, NON_DETERMINED);
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} else {
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CDataStream ss(SER_NETWORK, PROTOCOL_VERSION);
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ss.reserve(ret.size() * 32);
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ss << genWit.getRequestNum();
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ss << accumulator.getValue(); // TODO: ---> this accumulator value is not necessary. The light node should get it using the other message..
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ss << witness.getValue();
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uint32_t size = ret.size();
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ss << size;
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for (CBigNum bnValue : ret) {
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ss << bnValue;
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}
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ss << heightStop;
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if (genWit.getPfrom()) {
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LogPrintf("%s pushing message to %s \n", "agrarian-light-thread", genWit.getPfrom()->addrName);
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genWit.getPfrom()->PushMessage("pubcoins", ss);
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} else
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LogPrintf("%s NOT pushing message to %s \n", "agrarian-light-thread", genWit.getPfrom()->addrName);
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}
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} else {
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// Rejects only the failed height
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rejectWork(genWit, blockHeight, NON_DETERMINED);
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}
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}
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} catch (std::exception& e) {
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//std::cout << "exception in light loop, closing it. " << e.what() << std::endl;
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PrintExceptionContinue(&e, "lightzagrthread");
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break;
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}
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}
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}
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// TODO: Think more the peer misbehaving policy..
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void CLightWorker::rejectWork(CGenWit& wit, int blockHeight, uint32_t errorNumber) {
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if (wit.getStartingHeight() == blockHeight){
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LogPrintf("%s rejecting work %s , error code: %s\n", "agrarian-light-thread", wit.toString(), errorNumber);
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CDataStream ss(SER_NETWORK, PROTOCOL_VERSION);
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ss << wit.getRequestNum();
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ss << errorNumber;
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wit.getPfrom()->PushMessage("pubcoins", ss);
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} else {
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requestsQueue.push(wit);
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}
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}
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