void debug_node_plugin::on_applied_block( const chain::signed_block& b )
{
if( !_debug_updates.empty() )
apply_debug_updates();
if( _json_object_stream )
{
(*_json_object_stream) << "{\"bn\":" << fc::to_string( b.block_num() ) << "}\n";
}
}
/**
* Every time a block is produced, this method is called. This method will iterate through all
* mining accounts specified by commandline and for which the private key is known. The first
* account that isn't already scheduled in the mining queue is selected to mine for the
* BLOCK_INTERVAL minus 1 second. If a POW is solved or a a new block comes in then the
* worker will stop early.
*
* Work is farmed out to N threads in parallel based upon the value specified on the command line.
*
* The miner assumes that the next block will be produced on time and that network propagation
* will take at least 1 second. This 1 second consists of the time it took to receive the block
* and how long it will take to broadcast the work. In other words, we assume 0.5s broadcast times
* and therefore do not even attempt work that cannot be delivered on time.
*/
void witness_plugin::on_applied_block( const chain::signed_block& b )
{ try {
if( !_mining_threads || _miners.size() == 0 ) return;
chain::database& db = database();
const auto& dgp = db.get_dynamic_global_properties();
double hps = (_total_hashes*1000000)/(fc::time_point::now()-_hash_start_time).count();
int64_t bits = (dgp.num_pow_witnesses/4) + 4;
fc::uint128 hashes = fc::uint128(1) << bits;
hashes *= 1000000;
hps += 1;
hashes /= int64_t(hps*1000000);
auto seconds = hashes.to_uint64();
//double seconds = hashes/hps;
auto minutes = uint64_t(seconds / 60.0);
if( _total_hashes > 0 )
ilog( "hash rate: ${x} hps target: ${t} queue: ${l} estimated time to produce: ${m} minutes",
("x",uint64_t(hps)) ("t",bits) ("m", minutes ) ("l",dgp.num_pow_witnesses)
);
_head_block_num = b.block_num();
/// save these variables to be captured by worker lambda
for( const auto& miner : _miners ) {
const auto* w = db.find_witness( miner.first );
if( !w || w->pow_worker == 0 ) {
auto miner_pub_key = miner.second; //a.active.key_auths.begin()->first;
auto priv_key_itr = _private_keys.find(miner_pub_key);
if( priv_key_itr == _private_keys.end() ) {
continue; /// skipping miner for lack of private key
}
auto miner_priv_key = priv_key_itr->second;
start_mining( miner_pub_key, priv_key_itr->second, miner.first, b );
break;
} else {
// ilog( "Skipping miner ${m} because it is already scheduled to produce a block", ("m",miner) );
}
} // for miner in miners
} catch ( const fc::exception& e ) { ilog( "exception thrown while attempting to mine" ); }
}