peerplays_migrated/libraries/chain/evaluator.cpp
Daniel Larimer baf5531238 Refactored chain library
- remove circular dependency with fee_schedule
- unitiy build db_* as database.cpp
- move protocol definitions in separate directory
- combined some objects/evaluators
- combined limit/call evaluator/objects into market_evaluator.*
2015-07-08 16:39:23 -04:00

110 lines
4.9 KiB
C++

/*
* Copyright (c) 2015, Cryptonomex, Inc.
* All rights reserved.
*
* This source code is provided for evaluation in private test networks only, until September 8, 2015. After this date, this license expires and
* the code may not be used, modified or distributed for any purpose. Redistribution and use in source and binary forms, with or without modification,
* are permitted until September 8, 2015, provided that the following conditions are met:
*
* 1. The code and/or derivative works are used only for private test networks consisting of no more than 10 P2P nodes.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <graphene/chain/database.hpp>
#include <graphene/chain/evaluator.hpp>
#include <graphene/chain/transaction_evaluation_state.hpp>
#include <graphene/chain/asset_object.hpp>
#include <graphene/chain/account_object.hpp>
#include <graphene/chain/delegate_object.hpp>
#include <graphene/chain/market_evaluator.hpp>
#include <graphene/chain/protocol/fee_schedule.hpp>
#include <fc/uint128.hpp>
namespace graphene { namespace chain {
database& generic_evaluator::db()const { return trx_state->db(); }
operation_result generic_evaluator::start_evaluate( transaction_evaluation_state& eval_state, const operation& op, bool apply )
{ try {
trx_state = &eval_state;
check_required_authorities(op);
auto result = evaluate( op );
if( apply ) result = this->apply( op );
return result;
} FC_CAPTURE_AND_RETHROW() }
void generic_evaluator::prepare_fee(account_id_type account_id, asset fee)
{
fee_from_account = fee;
FC_ASSERT( fee.amount >= 0 );
fee_paying_account = &account_id(db());
fee_paying_account_statistics = &fee_paying_account->statistics(db());
fee_asset = &fee.asset_id(db());
fee_asset_dyn_data = &fee_asset->dynamic_asset_data_id(db());
if( fee_from_account.asset_id == asset_id_type() )
core_fee_paid = fee_from_account.amount;
else {
asset fee_from_pool = fee_from_account * fee_asset->options.core_exchange_rate;
FC_ASSERT( fee_from_pool.asset_id == asset_id_type() );
core_fee_paid = fee_from_pool.amount;
FC_ASSERT( core_fee_paid <= fee_asset_dyn_data->fee_pool );
}
}
void generic_evaluator::pay_fee()
{ try {
if( fee_asset->get_id() != asset_id_type() )
db().modify(*fee_asset_dyn_data, [this](asset_dynamic_data_object& d) {
d.accumulated_fees += fee_from_account.amount;
d.fee_pool -= core_fee_paid;
});
db().modify(*fee_paying_account_statistics, [&](account_statistics_object& s) {
if( core_fee_paid > db().get_global_properties().parameters.cashback_vesting_threshold )
s.pending_fees += core_fee_paid;
else
s.pending_vested_fees += core_fee_paid;
});
} FC_CAPTURE_AND_RETHROW() }
bool generic_evaluator::verify_authority( const account_object& a, authority::classification c )
{ try {
return trx_state->check_authority( a, c );
} FC_CAPTURE_AND_RETHROW( (a)(c) ) }
void generic_evaluator::check_required_authorities(const operation& op)
{ try {
flat_set<account_id_type> active_auths;
flat_set<account_id_type> owner_auths;
vector<authority> other_auths;
operation_get_required_authorities( op, active_auths, owner_auths, other_auths );
for( auto id : active_auths )
FC_ASSERT(verify_authority(id(db()), authority::active) ||
verify_authority(id(db()), authority::owner), "", ("id", id));
for( auto id : owner_auths )
FC_ASSERT(verify_authority(id(db()), authority::owner), "", ("id", id));
for( const auto& auth : other_auths )
FC_ASSERT(trx_state->check_authority(auth), "invalid authority", ("auth",auth)("sigs",trx_state->_sigs));
} FC_CAPTURE_AND_RETHROW( (op) ) }
void generic_evaluator::verify_authority_accounts( const authority& a )const
{
const auto& chain_params = db().get_global_properties().parameters;
FC_ASSERT( a.num_auths() <= chain_params.maximum_authority_membership );
for( const auto& acnt : a.account_auths )
acnt.first(db());
}
} }