transaction_builder& transaction_builder::cancel_market_order( const order_id_type& order_id )
{ try {
const auto order = _wimpl->_blockchain->get_market_order( order_id );
if( !order.valid() )
FC_THROW_EXCEPTION( unknown_market_order, "Cannot find that market order!" );
const auto owner_address = order->get_owner();
const auto owner_key_record = _wimpl->_wallet_db.lookup_key( owner_address );
if( !owner_key_record.valid() || !owner_key_record->has_private_key() )
FC_THROW_EXCEPTION( private_key_not_found, "Cannot find the private key for that market order!" );
const auto account_record = _wimpl->_wallet_db.lookup_account( owner_key_record->account_address );
FC_ASSERT( account_record.valid() );
asset balance = order->get_balance();
if( balance.amount == 0 ) FC_CAPTURE_AND_THROW( zero_amount, (order) );
switch( order_type_enum( order->type ) )
{
case ask_order:
trx.ask( -balance, order->market_index.order_price, owner_address );
break;
case bid_order:
trx.bid( -balance, order->market_index.order_price, owner_address );
break;
case short_order:
trx.short_sell( -balance, order->market_index.order_price, owner_address );
break;
default:
FC_THROW_EXCEPTION( invalid_cancel, "You cannot cancel this type of order!" );
break;
}
//Credit this account the cancel proceeds
credit_balance(account_record->owner_address(), balance);
//Set order key for this account if not already set
if( order_keys.find(account_record->owner_address()) == order_keys.end() )
{
const oasset_record asset_record = _wimpl->_blockchain->get_asset_record( balance.asset_id );
FC_ASSERT( asset_record.valid() );
if( asset_record->flag_is_active( asset_record::restricted_accounts ) )
order_keys[ account_record->owner_address() ] = account_record->active_key();
else
order_keys[ account_record->owner_address() ] = owner_key_record->public_key;
}
auto entry = ledger_entry();
entry.from_account = owner_key_record->public_key;
entry.to_account = account_record->owner_key;
entry.amount = balance;
entry.memo = "cancel " + order->get_small_id();
transaction_record.is_market = true;
transaction_record.ledger_entries.push_back( entry );
required_signatures.insert( owner_address );
return *this;
}
FC_CAPTURE_AND_RETHROW( (order_id) )
}
transaction_builder& transaction_builder::submit_bid(const wallet_account_record& from_account,
const asset& real_quantity,
const price& quote_price)
{ try {
validate_market(quote_price.quote_asset_id, quote_price.base_asset_id);
asset cost;
if( real_quantity.asset_id == quote_price.quote_asset_id )
cost = real_quantity;
else
{
cost = real_quantity * quote_price;
FC_ASSERT(cost.asset_id == quote_price.quote_asset_id);
}
const oasset_record base_asset_record = _wimpl->_blockchain->get_asset_record( quote_price.base_asset_id );
FC_ASSERT( base_asset_record.valid() );
public_key_type order_key;
if( base_asset_record->flag_is_active( asset_record::restricted_accounts ) )
order_key = from_account.active_key();
else
order_key = order_key_for_account( from_account.owner_address(), from_account.name );
order_keys[ from_account.owner_address() ] = order_key;
//Charge this account for the bid
deduct_balance(from_account.owner_address(), cost);
trx.bid(cost, quote_price, order_key);
if( trx.expiration == time_point_sec() )
trx.expiration = blockchain::now() + WALLET_DEFAULT_MARKET_TRANSACTION_EXPIRATION_SEC;
auto entry = ledger_entry();
entry.from_account = from_account.owner_key;
entry.to_account = order_key;
entry.amount = cost;
entry.memo = "buy " + _wimpl->_blockchain->get_asset_symbol(quote_price.base_asset_id) +
" @ " + _wimpl->_blockchain->to_pretty_price(quote_price);
transaction_record.is_market = true;
transaction_record.ledger_entries.push_back(entry);
required_signatures.insert(order_key);
return *this;
}
FC_CAPTURE_AND_RETHROW( (from_account.name)(real_quantity)(quote_price) )
}
