tuple<ImportRoute, bool, unsigned> BlockChain::sync(BlockQueue& _bq, OverlayDB const& _stateDB, unsigned _max)
{
// _bq.tick(*this);
VerifiedBlocks blocks;
_bq.drain(blocks, _max);
h256s fresh;
h256s dead;
h256s badBlocks;
Transactions goodTransactions;
unsigned count = 0;
for (VerifiedBlock const& block: blocks)
{
do {
try
{
// Nonce & uncle nonces already verified in verification thread at this point.
ImportRoute r;
DEV_TIMED_ABOVE("Block import " + toString(block.verified.info.number()), 500)
r = import(block.verified, _stateDB, (ImportRequirements::Everything & ~ImportRequirements::ValidSeal & ~ImportRequirements::CheckUncles) != 0);
fresh += r.liveBlocks;
dead += r.deadBlocks;
goodTransactions.reserve(goodTransactions.size() + r.goodTranactions.size());
std::move(std::begin(r.goodTranactions), std::end(r.goodTranactions), std::back_inserter(goodTransactions));
++count;
}
catch (dev::eth::UnknownParent)
{
cwarn << "ODD: Import queue contains block with unknown parent.";// << LogTag::Error << boost::current_exception_diagnostic_information();
// NOTE: don't reimport since the queue should guarantee everything in the right order.
// Can't continue - chain bad.
badBlocks.push_back(block.verified.info.hash());
}
catch (dev::eth::FutureTime)
{
cwarn << "ODD: Import queue contains a block with future time.";
this_thread::sleep_for(chrono::seconds(1));
continue;
}
catch (dev::eth::TransientError)
{
this_thread::sleep_for(chrono::milliseconds(100));
continue;
}
catch (Exception& ex)
{
// cnote << "Exception while importing block. Someone (Jeff? That you?) seems to be giving us dodgy blocks!";// << LogTag::Error << diagnostic_information(ex);
if (m_onBad)
m_onBad(ex);
// NOTE: don't reimport since the queue should guarantee everything in the right order.
// Can't continue - chain bad.
badBlocks.push_back(block.verified.info.hash());
}
} while (false);
}
return make_tuple(ImportRoute{dead, fresh, goodTransactions}, _bq.doneDrain(badBlocks), count);
}
Json::Value toJson(dev::eth::BlockInfo const& _bi, BlockDetails const& _bd, UncleHashes const& _us, Transactions const& _ts)
{
Json::Value res = toJson(_bi);
if (_bi)
{
res["totalDifficulty"] = toJS(_bd.totalDifficulty);
res["uncles"] = Json::Value(Json::arrayValue);
for (h256 h: _us)
res["uncles"].append(toJS(h));
res["transactions"] = Json::Value(Json::arrayValue);
for (unsigned i = 0; i < _ts.size(); i++)
res["transactions"].append(toJson(_ts[i], std::make_pair(_bi.hash(), i), (BlockNumber)_bi.number));
}
return res;
}