Esempio n. 1
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inline
QDateTime toQDateTime(const fc::time_point_sec& time_in_seconds)
  {
  QDateTime date_time;
  date_time.setTime_t(time_in_seconds.sec_since_epoch());
  return date_time;
  }
 void bts_gntp_notifier::notify_head_block_too_old(const fc::time_point_sec& head_block_age)
 {
   fc::time_point block_age_cutoff = fc::time_point::now() - fc::seconds(BTS_BLOCKCHAIN_BLOCK_INTERVAL_SEC * my->_missed_block_count_threshold);
   if (head_block_age < block_age_cutoff)
   {
     fc::time_point notification_time_cutoff = fc::time_point::now() - my->_head_block_too_old_notification_interval;
     if (my->_last_head_block_too_old_notification_time < notification_time_cutoff)
     {
       std::ostringstream message;
       uint32_t age_in_sec = bts::blockchain::now().sec_since_epoch() - head_block_age.sec_since_epoch();
       uint32_t missed_block_count = age_in_sec / BTS_BLOCKCHAIN_BLOCK_INTERVAL_SEC;
       message << "The last block on our blockchain is " << fc::get_approximate_relative_time_string(head_block_age, bts::blockchain::now(), " old") << 
                  " seconds old, meaning we've missed " << missed_block_count << " blocks";
       my->_notifier.send_notification("head_block_too_old", "Head Block is Too Old", message.str(), my->_bitshares_icon);
       my->_last_head_block_too_old_notification_time = fc::time_point::now();    
     }
   }
 }
Esempio n. 3
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 void set_time_point(const fc::time_point_sec& t) {
    uint64_t  sec_since_epoch = t.sec_since_epoch();
    slot = (sec_since_epoch * 1000 - EpochMs) / IntervalMs;
 }
Esempio n. 4
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uint32_t get_slot_number( const fc::time_point_sec timestamp )
{
   return timestamp.sec_since_epoch() / BTS_BLOCKCHAIN_BLOCK_INTERVAL_SEC;
}
Esempio n. 5
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inline auto convert_native_to_literal(const interpreter_interface*, const fc::time_point_sec &val) {
   return Literal(val.sec_since_epoch());
}
Esempio n. 6
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 inline void pack( Stream& s, const fc::time_point_sec& tp )
 {
    uint32_t usec = tp.sec_since_epoch();
    s.write( (const char*)&usec, sizeof(usec) );
 }
                  void execute( asset_id_type quote_id, asset_id_type base_id, const fc::time_point_sec& timestamp )
                  {
                     try {
                         _quote_id = quote_id;
                         _base_id = base_id;
                         auto quote_asset = _pending_state->get_asset_record( _quote_id );

                         // DISABLE MARKET ISSUED ASSETS
                         if( quote_asset->is_market_issued() )
                            return; // don't execute anything.

                         // the order book is soreted from low to high price, so to get the last item (highest bid), we need to go to the first item in the
                         // next market class and then back up one
                         auto next_pair  = base_id+1 == quote_id ? price( 0, quote_id+1, 0) : price( 0, quote_id, base_id+1 );
                         _bid_itr        = _db_impl._bid_db.lower_bound( market_index_key( next_pair ) );
                         _ask_itr        = _db_impl._ask_db.lower_bound( market_index_key( price( 0, quote_id, base_id) ) );
                         _short_itr      = _db_impl._short_db.lower_bound( market_index_key( next_pair ) );
                         _collateral_itr      = _db_impl._collateral_db.lower_bound( market_index_key( next_pair ) );

                         if( !_ask_itr.valid() )
                         {
                            wlog( "ask iter invalid..." );
                            _ask_itr = _db_impl._ask_db.begin();
                         }

                         if( _short_itr.valid() ) --_short_itr;
                         else _short_itr = _db_impl._short_db.last();

                         if( _bid_itr.valid() )   --_bid_itr;
                         else _bid_itr = _db_impl._bid_db.last();

                         if( _collateral_itr.valid() )   --_collateral_itr;
                         else _collateral_itr = _db_impl._collateral_db.last();

                         asset consumed_bid_depth(0,base_id);
                         asset consumed_ask_depth(0,base_id);


                         asset usd_fees_collected(0,quote_id);
                         asset trading_volume(0, base_id);

                         omarket_status market_stat = _pending_state->get_market_status( _quote_id, _base_id );
                         if( !market_stat.valid() )
                         {
                            if( quote_asset->is_market_issued() ) FC_CAPTURE_AND_THROW( insufficient_depth, (market_stat) );
                            FC_ASSERT( market_stat.valid() );
                         }

                         while( get_next_bid() && get_next_ask() )
                         {
                            idump( (_current_bid)(_current_ask) );
                            price ask_price = _current_ask->get_price();
                            // this works for bids, asks, and shorts.... but in the case of a cover
                            // the current ask can go lower than the call price in order to match
                            // the bid....
                            if( _current_ask->type == cover_order )
                            {
                               ask_price = std::min( _current_bid->get_price(), _current_ask->get_highest_cover_price() );
                            }

                            if( _current_bid->get_price() < ask_price )
                               break;

                            if( quote_asset->is_market_issued() )
                            {
                               if( !market_stat ||
                                   market_stat->ask_depth < BTS_BLOCKCHAIN_MARKET_DEPTH_REQUIREMENT/2 ||
                                   market_stat->bid_depth < BTS_BLOCKCHAIN_MARKET_DEPTH_REQUIREMENT/2
                                 )
                                 FC_CAPTURE_AND_THROW( insufficient_depth, (market_stat) );
                            }

                            auto quantity = std::min( _current_bid->get_quantity(), _current_ask->get_quantity() );

                            auto usd_paid_by_bid     = quantity * _current_bid->get_price();
                            auto usd_received_by_ask = quantity * _current_ask->get_price();
                            auto xts_paid_by_ask     = quantity;
                            auto xts_received_by_bid = quantity;

                            consumed_bid_depth += quantity;
                            consumed_ask_depth += quantity;

                            if( _current_bid->type == short_order )
                            {
                               usd_paid_by_bid = usd_received_by_ask;
                            }

                            if( _current_ask->type == cover_order )
                            {
                                usd_received_by_ask = usd_paid_by_bid;
                            }

                            FC_ASSERT( usd_paid_by_bid.amount >= 0 );
                            FC_ASSERT( xts_paid_by_ask.amount >= 0 );
                            FC_ASSERT( usd_received_by_ask.amount >= 0 );
                            FC_ASSERT( xts_received_by_bid.amount >= 0 );
                            FC_ASSERT( usd_paid_by_bid >= usd_received_by_ask );
                            FC_ASSERT( xts_paid_by_ask >= xts_received_by_bid );

                            // sanity check to keep supply from growing without bound
                            FC_ASSERT( usd_paid_by_bid < asset(quote_asset->maximum_share_supply,quote_id), "", ("usd_paid_by_bid",usd_paid_by_bid)("asset",quote_asset) );

                            usd_fees_collected += usd_paid_by_bid - usd_received_by_ask;
                            idump( (usd_fees_collected)(xts_paid_by_ask)(xts_received_by_bid)(quantity) );

                            market_transaction mtrx;
                            mtrx.bid_owner       = _current_bid->get_owner();
                            mtrx.ask_owner       = _current_ask->get_owner();
                            mtrx.bid_price       = _current_bid->get_price();
                            mtrx.ask_price       = ask_price;
                            mtrx.bid_paid        = usd_paid_by_bid;
                            mtrx.bid_received    = xts_received_by_bid;
                            mtrx.ask_paid        = xts_paid_by_ask;
                            mtrx.ask_received    = usd_received_by_ask;
                            mtrx.bid_type        = _current_bid->type;
                            mtrx.fees_collected  = xts_paid_by_ask - xts_received_by_bid;

                            _market_transactions.push_back(mtrx);
                            trading_volume += mtrx.bid_received;

                            market_stat->ask_depth -= xts_paid_by_ask.amount;
                            if( _current_ask->type == ask_order )
                            {
                               /* rounding errors on price cause this not to go to 0 in some cases */
                               if( quantity == _current_ask->get_quantity() )
                                  _current_ask->state.balance = 0;
                               else
                                  _current_ask->state.balance -= xts_paid_by_ask.amount;

                               FC_ASSERT( _current_ask->state.balance >= 0 );

                               auto ask_balance_address = withdraw_condition( withdraw_with_signature(_current_ask->get_owner()), quote_id ).get_address();
                               auto ask_payout = _pending_state->get_balance_record( ask_balance_address );
                               if( !ask_payout )
                                  ask_payout = balance_record( _current_ask->get_owner(), asset(0,quote_id), 0 );
                               ask_payout->balance += usd_received_by_ask.amount;
                               ask_payout->last_update = _pending_state->now();

                               _pending_state->store_balance_record( *ask_payout );
                               _pending_state->store_ask_record( _current_ask->market_index, _current_ask->state );
                            }
                            else if( _current_ask->type == cover_order )
                            {
                               elog( "MATCHING COVER ORDER recv_usd: ${usd}  paid_collat: ${c}",
                                     ("usd",usd_received_by_ask)("c",xts_paid_by_ask) );
                               wlog( "current ask: ${c}", ("c",_current_ask) );
                               // we are in the margin call range...
                               _current_ask->state.balance  -= usd_received_by_ask.amount;
                               *(_current_ask->collateral)  -= xts_paid_by_ask.amount;

                               FC_ASSERT( _current_ask->state.balance >= 0 );
                               FC_ASSERT( *_current_ask->collateral >= 0 );

                               if( _current_ask->state.balance == 0 ) // no more USD left
                               { // send collateral home to mommy & daddy
                                     wlog( "            collateral balance is now 0!" );
                                     auto ask_balance_address = withdraw_condition(
                                                                       withdraw_with_signature(_current_ask->get_owner()),
                                                                       base_id ).get_address();

                                     auto ask_payout = _pending_state->get_balance_record( ask_balance_address );
                                     if( !ask_payout )
                                        ask_payout = balance_record( _current_ask->get_owner(), asset(0,base_id), 0 );
                                     ask_payout->balance += (*_current_ask->collateral);
                                     ask_payout->last_update = _pending_state->now();

                                     _pending_state->store_balance_record( *ask_payout );
                                     _current_ask->collateral = 0;

                               }
                               wlog( "storing collateral ${c}", ("c",_current_ask) );
                               _pending_state->store_collateral_record( _current_ask->market_index,
                                                                        collateral_record( *_current_ask->collateral,
                                                                                           _current_ask->state.balance ) );
                            }

                            if( _current_bid->type == bid_order )
                            {
                               _current_bid->state.balance -= usd_paid_by_bid.amount;
                               FC_ASSERT( _current_bid->state.balance >= 0 );

                               auto bid_payout = _pending_state->get_balance_record(
                                                         withdraw_condition( withdraw_with_signature(_current_bid->get_owner()), base_id ).get_address() );
                               if( !bid_payout )
                                  bid_payout = balance_record( _current_bid->get_owner(), asset(0,base_id), 0 );
                               bid_payout->balance += xts_received_by_bid.amount;
                               bid_payout->last_update = _pending_state->now();
                               _pending_state->store_balance_record( *bid_payout );
                               _pending_state->store_bid_record( _current_bid->market_index, _current_bid->state );

                            }
                            else if( _current_bid->type == short_order )
                            {
                               market_stat->bid_depth -= xts_received_by_bid.amount;

                               // TODO: what if the amount paid is 0 for bid and ask due to rounding errors,
                               // make sure this doesn't put us in an infinite loop.
                               if( quantity == _current_bid->get_quantity() )
                                  _current_bid->state.balance = 0;
                               else
                                  _current_bid->state.balance -= xts_received_by_bid.amount;
                               FC_ASSERT( _current_bid->state.balance >= 0 );

                               auto collateral = (xts_paid_by_ask + xts_received_by_bid).amount;
                               auto cover_price = usd_received_by_ask / asset( (3*collateral)/4, base_id );

                               market_index_key cover_index( cover_price, _current_ask->get_owner() );
                               auto ocover_record = _pending_state->get_collateral_record( cover_index );

                               if( NOT ocover_record )
                                  ocover_record = collateral_record();

                               ocover_record->collateral_balance += collateral;
                               ocover_record->payoff_balance += usd_received_by_ask.amount;
                               FC_ASSERT( ocover_record->payoff_balance >= 0 );
                               FC_ASSERT( ocover_record->collateral_balance >= 0 );
                               _pending_state->store_collateral_record( cover_index, *ocover_record );

                               _pending_state->store_short_record( _current_bid->market_index, _current_bid->state );
                            }
                         } // while bid && ask

                         if( quote_asset->is_market_issued() )
                         {
                            if( !market_stat ||
                                market_stat->ask_depth < BTS_BLOCKCHAIN_MARKET_DEPTH_REQUIREMENT/2 ||
                                market_stat->bid_depth < BTS_BLOCKCHAIN_MARKET_DEPTH_REQUIREMENT/2
                              )
                              FC_CAPTURE_AND_THROW( insufficient_depth, (market_stat) );
                         }
                         _pending_state->store_market_status( *market_stat );

                         if( trading_volume.amount > 0 && get_next_bid() && get_next_ask() )
                         {
                           market_history_key key(quote_id, base_id, market_history_key::each_block, _db_impl._head_block_header.timestamp);
                           market_history_record new_record(_current_bid->get_price(), _current_ask->get_price(), trading_volume.amount);
                           //LevelDB iterators are dumb and don't support proper past-the-end semantics.
                           auto last_key_itr = _db_impl._market_history_db.lower_bound(key);
                           if( !last_key_itr.valid() )
                             last_key_itr = _db_impl._market_history_db.last();
                           else
                             --last_key_itr;

                           key.timestamp = timestamp;

                           //Unless the previous record for this market is the same as ours...
                           if( (!(last_key_itr.valid()
                               && last_key_itr.key().quote_id == quote_id
                               && last_key_itr.key().base_id == base_id
                               && last_key_itr.key().granularity == market_history_key::each_block
                               && last_key_itr.value() == new_record)) )
                           {
                             //...add a new entry to the history table.
                             _pending_state->market_history[key] = new_record;
                           }

                           fc::time_point_sec start_of_this_hour = timestamp - (timestamp.sec_since_epoch() % (60*60));
                           market_history_key old_key(quote_id, base_id, market_history_key::each_hour, start_of_this_hour);
                           if( auto opt = _db_impl._market_history_db.fetch_optional(old_key) )
                           {
                             auto old_record = *opt;
                             old_record.volume += new_record.volume;
                             if( new_record.highest_bid > old_record.highest_bid || new_record.lowest_ask < old_record.lowest_ask )
                             {
                               old_record.highest_bid = std::max(new_record.highest_bid, old_record.highest_bid);
                               old_record.lowest_ask = std::min(new_record.lowest_ask, old_record.lowest_ask);
                               _pending_state->market_history[old_key] = old_record;
                             }
                           }
                           else
                             _pending_state->market_history[old_key] = new_record;

                           fc::time_point_sec start_of_this_day = timestamp - (timestamp.sec_since_epoch() % (60*60*24));
                           old_key = market_history_key(quote_id, base_id, market_history_key::each_day, start_of_this_day);
                           if( auto opt = _db_impl._market_history_db.fetch_optional(old_key) )
                           {
                             auto old_record = *opt;
                             old_record.volume += new_record.volume;
                             if( new_record.highest_bid > old_record.highest_bid || new_record.lowest_ask < old_record.lowest_ask )
                             {
                               old_record.highest_bid = std::max(new_record.highest_bid, old_record.highest_bid);
                               old_record.lowest_ask = std::min(new_record.lowest_ask, old_record.lowest_ask);
                               _pending_state->market_history[old_key] = old_record;
                             }
                           }
                           else
                             _pending_state->market_history[old_key] = new_record;
                         }

                         auto market_state = _pending_state->get_market_status( quote_id, base_id );
                          if( !market_state )
                             market_state = market_status( quote_id, base_id, 0, 0 );
                         market_state->last_error.reset();
                         _pending_state->store_market_status( *market_state );

                         wlog( "done matching orders" );
                         _pending_state->apply_changes();
                    }
                    catch( const fc::exception& e )
                    {
                       wlog( "error executing market ${quote} / ${base}\n ${e}", ("quote",quote_id)("base",base_id)("e",e.to_detail_string()) );
                       auto market_state = _prior_state->get_market_status( quote_id, base_id );
                       if( !market_state )
                          market_state = market_status( quote_id, base_id, 0, 0 );
                       market_state->last_error = e;
                       _prior_state->store_market_status( *market_state );
                    }
                  } // execute(...)
Esempio n. 8
0
      /**
       *  This method should not affect market execution or validation and
       *  is for historical purposes only.
       */
      void update_market_history( const asset& trading_volume,
                                  const price& opening_price,
                                  const price& closing_price,
                                  const omarket_status& market_stat,
                                  const fc::time_point_sec& timestamp )
      {
             if( trading_volume.amount > 0 && get_next_bid() && get_next_ask() )
             {
               market_history_key key(_quote_id, _base_id, market_history_key::each_block, _db_impl._head_block_header.timestamp);
               market_history_record new_record(_current_bid->get_price(),
                                                _current_ask->get_price(),
                                                opening_price,
                                                closing_price,
                                                trading_volume.amount);

               FC_ASSERT( market_stat );
               new_record.recent_average_price = market_stat->center_price;

               //LevelDB iterators are dumb and don't support proper past-the-end semantics.
               auto last_key_itr = _db_impl._market_history_db.lower_bound(key);
               if( !last_key_itr.valid() )
                 last_key_itr = _db_impl._market_history_db.last();
               else
                 --last_key_itr;

               key.timestamp = timestamp;

               //Unless the previous record for this market is the same as ours...
               if( (!(last_key_itr.valid()
                   && last_key_itr.key().quote_id == _quote_id
                   && last_key_itr.key().base_id == _base_id
                   && last_key_itr.key().granularity == market_history_key::each_block
                   && last_key_itr.value() == new_record)) )
               {
                 //...add a new entry to the history table.
                 _pending_state->market_history[key] = new_record;
               }

               fc::time_point_sec start_of_this_hour = timestamp - (timestamp.sec_since_epoch() % (60*60));
               market_history_key old_key(_quote_id, _base_id, market_history_key::each_hour, start_of_this_hour);
               if( auto opt = _db_impl._market_history_db.fetch_optional(old_key) )
               {
                 auto old_record = *opt;
                 old_record.volume += new_record.volume;
                 if( new_record.highest_bid > old_record.highest_bid || new_record.lowest_ask < old_record.lowest_ask )
                 {
                   old_record.highest_bid = std::max(new_record.highest_bid, old_record.highest_bid);
                   old_record.lowest_ask = std::min(new_record.lowest_ask, old_record.lowest_ask);
                   old_record.recent_average_price = new_record.recent_average_price;
                   _pending_state->market_history[old_key] = old_record;
                 }
               }
               else
                 _pending_state->market_history[old_key] = new_record;

               fc::time_point_sec start_of_this_day = timestamp - (timestamp.sec_since_epoch() % (60*60*24));
               old_key = market_history_key(_quote_id, _base_id, market_history_key::each_day, start_of_this_day);
               if( auto opt = _db_impl._market_history_db.fetch_optional(old_key) )
               {
                 auto old_record = *opt;
                 old_record.volume += new_record.volume;
                 if( new_record.highest_bid > old_record.highest_bid || new_record.lowest_ask < old_record.lowest_ask )
                 {
                   old_record.highest_bid = std::max(new_record.highest_bid, old_record.highest_bid);
                   old_record.lowest_ask = std::min(new_record.lowest_ask, old_record.lowest_ask);
                   old_record.recent_average_price = new_record.recent_average_price;
                   _pending_state->market_history[old_key] = old_record;
                 }
               }
               else
                 _pending_state->market_history[old_key] = new_record;
             }
      }