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peerplays_migrated/libraries/chain/asset_evaluator.cpp
serkixenos c888274846 Merge beatrice to master 2021-12
2021-12-15 16:36:40 +00:00

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/*
* Copyright (c) 2015 Cryptonomex, Inc., and contributors.
*
* The MIT License
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
#include <graphene/chain/asset_evaluator.hpp>
#include <graphene/chain/asset_object.hpp>
#include <graphene/chain/account_object.hpp>
#include <graphene/chain/balance_object.hpp>
#include <graphene/chain/market_object.hpp>
#include <graphene/chain/database.hpp>
#include <graphene/chain/exceptions.hpp>
#include <graphene/chain/hardfork.hpp>
#include <graphene/chain/is_authorized_asset.hpp>
#include <functional>
#include <boost/algorithm/string/case_conv.hpp>
namespace graphene { namespace chain {
void_result asset_create_evaluator::do_evaluate( const asset_create_operation& op )
{ try {
database& d = db();
FC_ASSERT(d.is_asset_creation_allowed(op.symbol), "Asset creation not allowed at current time");
const auto& chain_parameters = d.get_global_properties().parameters;
FC_ASSERT( op.common_options.whitelist_authorities.size() <= chain_parameters.maximum_asset_whitelist_authorities );
FC_ASSERT( op.common_options.blacklist_authorities.size() <= chain_parameters.maximum_asset_whitelist_authorities );
// Check that all authorities do exist
for( auto id : op.common_options.whitelist_authorities )
d.get_object(id);
for( auto id : op.common_options.blacklist_authorities )
d.get_object(id);
auto& asset_indx = d.get_index_type<asset_index>().indices().get<by_symbol>();
auto asset_symbol_itr = asset_indx.find( op.symbol );
FC_ASSERT( asset_symbol_itr == asset_indx.end() );
if( d.head_block_time() > HARDFORK_385_TIME )
{
if( d.head_block_time() <= HARDFORK_409_TIME )
{
auto dotpos = op.symbol.find( '.' );
if( dotpos != std::string::npos )
{
auto prefix = op.symbol.substr( 0, dotpos );
auto asset_symbol_itr = asset_indx.find( op.symbol );
FC_ASSERT( asset_symbol_itr != asset_indx.end(), "Asset ${s} may only be created by issuer of ${p}, but ${p} has not been registered",
("s",op.symbol)("p",prefix) );
FC_ASSERT( asset_symbol_itr->issuer == op.issuer, "Asset ${s} may only be created by issuer of ${p}, ${i}",
("s",op.symbol)("p",prefix)("i", op.issuer(d).name) );
}
}
else
{
auto dotpos = op.symbol.rfind( '.' );
if( dotpos != std::string::npos )
{
auto prefix = op.symbol.substr( 0, dotpos );
auto asset_symbol_itr = asset_indx.find( prefix );
FC_ASSERT( asset_symbol_itr != asset_indx.end(), "Asset ${s} may only be created by issuer of ${p}, but ${p} has not been registered",
("s",op.symbol)("p",prefix) );
FC_ASSERT( asset_symbol_itr->issuer == op.issuer, "Asset ${s} may only be created by issuer of ${p}, ${i}",
("s",op.symbol)("p",prefix)("i", op.issuer(d).name) );
}
}
}
else
{
auto dotpos = op.symbol.find( '.' );
if( dotpos != std::string::npos )
wlog( "Asset ${s} has a name which requires hardfork 385", ("s",op.symbol) );
}
// core_fee_paid -= core_fee_paid.value/2;
if( op.bitasset_opts )
{
const asset_object& backing = op.bitasset_opts->short_backing_asset(d);
if( backing.is_market_issued() )
{
const asset_bitasset_data_object& backing_bitasset_data = backing.bitasset_data(d);
const asset_object& backing_backing = backing_bitasset_data.options.short_backing_asset(d);
FC_ASSERT( !backing_backing.is_market_issued(),
"May not create a bitasset backed by a bitasset backed by a bitasset." );
FC_ASSERT( op.issuer != GRAPHENE_COMMITTEE_ACCOUNT || backing_backing.get_id() == asset_id_type(),
"May not create a blockchain-controlled market asset which is not backed by CORE.");
} else
FC_ASSERT( op.issuer != GRAPHENE_COMMITTEE_ACCOUNT || backing.get_id() == asset_id_type(),
"May not create a blockchain-controlled market asset which is not backed by CORE.");
FC_ASSERT( op.bitasset_opts->feed_lifetime_sec > chain_parameters.block_interval &&
op.bitasset_opts->force_settlement_delay_sec > chain_parameters.block_interval );
}
if( op.is_prediction_market )
{
FC_ASSERT( op.bitasset_opts );
FC_ASSERT( op.precision == op.bitasset_opts->short_backing_asset(d).precision );
}
return void_result();
} FC_CAPTURE_AND_RETHROW( (op) ) }
// copied from bitshares. (https://github.com/bitshares/bitshares-core/issues/429)
void asset_create_evaluator::pay_fee()
{
fee_is_odd = core_fee_paid.value & 1;
core_fee_paid -= core_fee_paid.value/2;
generic_evaluator::pay_fee();
}
object_id_type asset_create_evaluator::do_apply( const asset_create_operation& op )
{ try {
database& d = db();
// includes changes from bitshares. (https://github.com/bitshares/bitshares-core/issues/429)
bool hf_429 = fee_is_odd && db().head_block_time() > HARDFORK_CORE_429_TIME;
const asset_dynamic_data_object& dyn_asset =
d.create<asset_dynamic_data_object>( [hf_429,this]( asset_dynamic_data_object& a ) {
a.current_supply = 0;
a.fee_pool = core_fee_paid - (hf_429 ? 1 : 0);
});
if( fee_is_odd && !hf_429 )
{
const auto& core_dd = d.get_core_asset().dynamic_data( d );
d.modify( core_dd, []( asset_dynamic_data_object& dd ) {
dd.current_supply++;
});
}
auto next_asset_id = d.get_index_type<asset_index>().get_next_id();
asset_bitasset_data_id_type bit_asset_id;
if( op.bitasset_opts.valid() )
bit_asset_id = d.create<asset_bitasset_data_object>( [&]( asset_bitasset_data_object& a ) {
a.options = *op.bitasset_opts;
a.is_prediction_market = op.is_prediction_market;
a.asset_id = next_asset_id;
}).id;
const asset_object& new_asset =
d.create<asset_object>( [&]( asset_object& a ) {
a.issuer = op.issuer;
a.symbol = op.symbol;
a.precision = op.precision;
a.options = op.common_options;
if( a.options.core_exchange_rate.base.asset_id.instance.value == 0 )
a.options.core_exchange_rate.quote.asset_id = next_asset_id;
else
a.options.core_exchange_rate.base.asset_id = next_asset_id;
a.dynamic_asset_data_id = dyn_asset.id;
if( op.bitasset_opts.valid() )
a.bitasset_data_id = bit_asset_id;
});
FC_ASSERT( new_asset.id == next_asset_id );
return new_asset.id;
} FC_CAPTURE_AND_RETHROW( (op) ) }
void_result lottery_asset_create_evaluator::do_evaluate( const lottery_asset_create_operation& op )
{ try {
database& d = db();
FC_ASSERT(d.is_asset_creation_allowed(op.symbol), "Lottery asset creation not allowed at current time");
const auto& chain_parameters = d.get_global_properties().parameters;
FC_ASSERT( op.common_options.whitelist_authorities.size() <= chain_parameters.maximum_asset_whitelist_authorities );
FC_ASSERT( op.common_options.blacklist_authorities.size() <= chain_parameters.maximum_asset_whitelist_authorities );
// Check that all authorities do exist
for( auto id : op.common_options.whitelist_authorities )
d.get_object(id);
for( auto id : op.common_options.blacklist_authorities )
d.get_object(id);
auto& asset_indx = d.get_index_type<asset_index>().indices().get<by_symbol>();
auto asset_symbol_itr = asset_indx.find( op.symbol );
FC_ASSERT( asset_symbol_itr == asset_indx.end() );
if( d.head_block_time() > HARDFORK_385_TIME )
{
if( d.head_block_time() <= HARDFORK_409_TIME )
{
auto dotpos = op.symbol.find( '.' );
if( dotpos != std::string::npos )
{
auto prefix = op.symbol.substr( 0, dotpos );
auto asset_symbol_itr = asset_indx.find( op.symbol );
FC_ASSERT( asset_symbol_itr != asset_indx.end(), "Asset ${s} may only be created by issuer of ${p}, but ${p} has not been registered",
("s",op.symbol)("p",prefix) );
FC_ASSERT( asset_symbol_itr->issuer == op.issuer, "Asset ${s} may only be created by issuer of ${p}, ${i}",
("s",op.symbol)("p",prefix)("i", op.issuer(d).name) );
}
}
else
{
auto dotpos = op.symbol.rfind( '.' );
if( dotpos != std::string::npos )
{
auto prefix = op.symbol.substr( 0, dotpos );
auto asset_symbol_itr = asset_indx.find( prefix );
FC_ASSERT( asset_symbol_itr != asset_indx.end(), "Asset ${s} may only be created by issuer of ${p}, but ${p} has not been registered",
("s",op.symbol)("p",prefix) );
FC_ASSERT( asset_symbol_itr->issuer == op.issuer, "Asset ${s} may only be created by issuer of ${p}, ${i}",
("s",op.symbol)("p",prefix)("i", op.issuer(d).name) );
}
}
}
else
{
auto dotpos = op.symbol.find( '.' );
if( dotpos != std::string::npos )
wlog( "Asset ${s} has a name which requires hardfork 385", ("s",op.symbol) );
}
// core_fee_paid -= core_fee_paid.value/2;
if( op.bitasset_opts )
{
const asset_object& backing = op.bitasset_opts->short_backing_asset(d);
if( backing.is_market_issued() )
{
const asset_bitasset_data_object& backing_bitasset_data = backing.bitasset_data(d);
const asset_object& backing_backing = backing_bitasset_data.options.short_backing_asset(d);
FC_ASSERT( !backing_backing.is_market_issued(),
"May not create a bitasset backed by a bitasset backed by a bitasset." );
FC_ASSERT( op.issuer != GRAPHENE_COMMITTEE_ACCOUNT || backing_backing.get_id() == asset_id_type(),
"May not create a blockchain-controlled market asset which is not backed by CORE.");
} else
FC_ASSERT( op.issuer != GRAPHENE_COMMITTEE_ACCOUNT || backing.get_id() == asset_id_type(),
"May not create a blockchain-controlled market asset which is not backed by CORE.");
FC_ASSERT( op.bitasset_opts->feed_lifetime_sec > chain_parameters.block_interval &&
op.bitasset_opts->force_settlement_delay_sec > chain_parameters.block_interval );
}
if( op.is_prediction_market )
{
FC_ASSERT( op.bitasset_opts );
FC_ASSERT( op.precision == op.bitasset_opts->short_backing_asset(d).precision );
}
FC_ASSERT( op.common_options.max_supply >= 5 );
auto lottery_options = op.extensions;
lottery_options.validate();
FC_ASSERT( lottery_options.end_date > d.head_block_time() || lottery_options.end_date == time_point_sec() );
return void_result();
} FC_CAPTURE_AND_RETHROW( (op) ) }
// copied from bitshares. (https://github.com/bitshares/bitshares-core/issues/429)
void lottery_asset_create_evaluator::pay_fee()
{
fee_is_odd = core_fee_paid.value & 1;
core_fee_paid -= core_fee_paid.value/2;
generic_evaluator::pay_fee();
}
object_id_type lottery_asset_create_evaluator::do_apply( const lottery_asset_create_operation& op )
{ try {
database& d = db();
// includes changes from bitshares. (https://github.com/bitshares/bitshares-core/issues/429)
bool hf_429 = fee_is_odd && d.head_block_time() > HARDFORK_CORE_429_TIME;
const asset_dynamic_data_object& dyn_asset =
d.create<asset_dynamic_data_object>( [&]( asset_dynamic_data_object& a ) {
a.current_supply = 0;
a.fee_pool = core_fee_paid - (hf_429 ? 1 : 0);
});
if( fee_is_odd && !hf_429 )
{
const auto& core_dd = d.get<asset_object>( asset_id_type() ).dynamic_data( db() );
d.modify( core_dd, [=]( asset_dynamic_data_object& dd ) {
dd.current_supply++;
});
}
auto next_asset_id = d.get_index_type<asset_index>().get_next_id();
asset_bitasset_data_id_type bit_asset_id;
if( op.bitasset_opts.valid() )
bit_asset_id = d.create<asset_bitasset_data_object>( [&op,next_asset_id]( asset_bitasset_data_object& a ) {
a.options = *op.bitasset_opts;
a.is_prediction_market = op.is_prediction_market;
a.asset_id = next_asset_id;
}).id;
const asset_object& new_asset =
d.create<asset_object>( [&op,next_asset_id,&dyn_asset,bit_asset_id,&d]( asset_object& a ) {
a.issuer = op.issuer;
a.symbol = op.symbol;
a.precision = op.precision;
a.options = op.common_options;
a.precision = 0;
a.lottery_options = op.extensions;
//a.lottery_options->balance = asset( 0, a.lottery_options->ticket_price.asset_id );
a.lottery_options->owner = a.id;
d.create<lottery_balance_object>([&a](lottery_balance_object& lbo) {
lbo.lottery_id = a.id;
});
if( a.options.core_exchange_rate.base.asset_id.instance.value == 0 )
a.options.core_exchange_rate.quote.asset_id = next_asset_id;
else
a.options.core_exchange_rate.base.asset_id = next_asset_id;
a.dynamic_asset_data_id = dyn_asset.id;
if( op.bitasset_opts.valid() )
a.bitasset_data_id = bit_asset_id;
});
FC_ASSERT( new_asset.id == next_asset_id, "Unexpected object database error, object id mismatch" );
return new_asset.id;
} FC_CAPTURE_AND_RETHROW( (op) ) }
void_result asset_issue_evaluator::do_evaluate( const asset_issue_operation& o )
{ try {
const database& d = db();
const asset_object& a = o.asset_to_issue.asset_id(d);
FC_ASSERT( o.issuer == a.issuer );
FC_ASSERT( !a.is_market_issued(), "Cannot manually issue a market-issued asset." );
FC_ASSERT( !a.is_lottery(), "Cannot manually issue a lottery asset." );
to_account = &o.issue_to_account(d);
FC_ASSERT( is_authorized_asset( d, *to_account, a ) );
asset_dyn_data = &a.dynamic_asset_data_id(d);
FC_ASSERT( (asset_dyn_data->current_supply + o.asset_to_issue.amount) <= a.options.max_supply );
return void_result();
} FC_CAPTURE_AND_RETHROW( (o) ) }
void_result asset_issue_evaluator::do_apply( const asset_issue_operation& o )
{ try {
db().adjust_balance( o.issue_to_account, o.asset_to_issue );
db().modify( *asset_dyn_data, [&o]( asset_dynamic_data_object& data ){
data.current_supply += o.asset_to_issue.amount;
});
return void_result();
} FC_CAPTURE_AND_RETHROW( (o) ) }
void_result asset_reserve_evaluator::do_evaluate( const asset_reserve_operation& o )
{ try {
const database& d = db();
const asset_object& a = o.amount_to_reserve.asset_id(d);
GRAPHENE_ASSERT(
!a.is_market_issued(),
asset_reserve_invalid_on_mia,
"Cannot reserve ${sym} because it is a market-issued asset",
("sym", a.symbol)
);
from_account = &o.payer(d);
FC_ASSERT( is_authorized_asset( d, *from_account, a ) );
asset_dyn_data = &a.dynamic_asset_data_id(d);
FC_ASSERT( (asset_dyn_data->current_supply - o.amount_to_reserve.amount) >= 0 );
return void_result();
} FC_CAPTURE_AND_RETHROW( (o) ) }
void_result asset_reserve_evaluator::do_apply( const asset_reserve_operation& o )
{ try {
db().adjust_balance( o.payer, -o.amount_to_reserve );
db().modify( *asset_dyn_data, [&o]( asset_dynamic_data_object& data ){
data.current_supply -= o.amount_to_reserve.amount;
});
return void_result();
} FC_CAPTURE_AND_RETHROW( (o) ) }
void_result asset_fund_fee_pool_evaluator::do_evaluate(const asset_fund_fee_pool_operation& o)
{ try {
database& d = db();
const asset_object& a = o.asset_id(d);
asset_dyn_data = &a.dynamic_asset_data_id(d);
return void_result();
} FC_CAPTURE_AND_RETHROW( (o) ) }
void_result asset_fund_fee_pool_evaluator::do_apply(const asset_fund_fee_pool_operation& o)
{ try {
db().adjust_balance(o.from_account, -o.amount);
db().modify( *asset_dyn_data, [&o]( asset_dynamic_data_object& data ) {
data.fee_pool += o.amount;
});
return void_result();
} FC_CAPTURE_AND_RETHROW( (o) ) }
void_result asset_update_evaluator::do_evaluate(const asset_update_operation& o)
{ try {
database& d = db();
const asset_object& a = o.asset_to_update(d);
auto a_copy = a;
a_copy.options = o.new_options;
a_copy.validate();
if( o.new_issuer )
{
FC_ASSERT(d.find_object(*o.new_issuer));
if( a.is_market_issued() && *o.new_issuer == GRAPHENE_COMMITTEE_ACCOUNT )
{
const asset_object& backing = a.bitasset_data(d).options.short_backing_asset(d);
if( backing.is_market_issued() )
{
const asset_object& backing_backing = backing.bitasset_data(d).options.short_backing_asset(d);
FC_ASSERT( backing_backing.get_id() == asset_id_type(),
"May not create a blockchain-controlled market asset which is not backed by CORE.");
} else
FC_ASSERT( backing.get_id() == asset_id_type(),
"May not create a blockchain-controlled market asset which is not backed by CORE.");
}
}
if( (d.head_block_time() < HARDFORK_572_TIME) || (a.dynamic_asset_data_id(d).current_supply != 0) )
{
// new issuer_permissions must be subset of old issuer permissions
FC_ASSERT(!(o.new_options.issuer_permissions & ~a.options.issuer_permissions),
"Cannot reinstate previously revoked issuer permissions on an asset.");
}
// changed flags must be subset of old issuer permissions
FC_ASSERT(!((o.new_options.flags ^ a.options.flags) & ~a.options.issuer_permissions),
"Flag change is forbidden by issuer permissions");
asset_to_update = &a;
FC_ASSERT( o.issuer == a.issuer, "", ("o.issuer", o.issuer)("a.issuer", a.issuer) );
const auto& chain_parameters = d.get_global_properties().parameters;
FC_ASSERT( o.new_options.whitelist_authorities.size() <= chain_parameters.maximum_asset_whitelist_authorities );
for( auto id : o.new_options.whitelist_authorities )
d.get_object(id);
FC_ASSERT( o.new_options.blacklist_authorities.size() <= chain_parameters.maximum_asset_whitelist_authorities );
for( auto id : o.new_options.blacklist_authorities )
d.get_object(id);
return void_result();
} FC_CAPTURE_AND_RETHROW((o)) }
void_result asset_update_evaluator::do_apply(const asset_update_operation& o)
{ try {
database& d = db();
// If we are now disabling force settlements, cancel all open force settlement orders
if( o.new_options.flags & disable_force_settle && asset_to_update->can_force_settle() )
{
const auto& idx = d.get_index_type<force_settlement_index>().indices().get<by_expiration>();
// Funky iteration code because we're removing objects as we go. We have to re-initialize itr every loop instead
// of simply incrementing it.
for( auto itr = idx.lower_bound(o.asset_to_update);
itr != idx.end() && itr->settlement_asset_id() == o.asset_to_update;
itr = idx.lower_bound(o.asset_to_update) )
d.cancel_order(*itr);
}
// For market-issued assets, if core change rate changed, update flag in bitasset data
if( asset_to_update->is_market_issued()
&& asset_to_update->options.core_exchange_rate != o.new_options.core_exchange_rate )
{
const auto& bitasset = asset_to_update->bitasset_data(d);
if( !bitasset.asset_cer_updated )
{
d.modify( bitasset, [](asset_bitasset_data_object& b)
{
b.asset_cer_updated = true;
});
}
}
d.modify(*asset_to_update, [&o](asset_object& a) {
if( o.new_issuer )
a.issuer = *o.new_issuer;
a.options = o.new_options;
});
return void_result();
} FC_CAPTURE_AND_RETHROW( (o) ) }
void_result asset_update_bitasset_evaluator::do_evaluate(const asset_update_bitasset_operation& o)
{ try {
database& d = db();
const asset_object& a = o.asset_to_update(d);
FC_ASSERT(a.is_market_issued(), "Cannot update BitAsset-specific settings on a non-BitAsset.");
const asset_bitasset_data_object& b = a.bitasset_data(d);
FC_ASSERT( !b.has_settlement(), "Cannot update a bitasset after a settlement has executed" );
if( o.new_options.short_backing_asset != b.options.short_backing_asset )
{
FC_ASSERT(a.dynamic_asset_data_id(d).current_supply == 0);
FC_ASSERT(d.find_object(o.new_options.short_backing_asset));
if( a.issuer == GRAPHENE_COMMITTEE_ACCOUNT )
{
const asset_object& backing = a.bitasset_data(d).options.short_backing_asset(d);
if( backing.is_market_issued() )
{
const asset_object& backing_backing = backing.bitasset_data(d).options.short_backing_asset(d);
FC_ASSERT( backing_backing.get_id() == asset_id_type(),
"May not create a blockchain-controlled market asset which is not backed by CORE.");
} else
FC_ASSERT( backing.get_id() == asset_id_type(),
"May not create a blockchain-controlled market asset which is not backed by CORE.");
}
}
bitasset_to_update = &b;
FC_ASSERT( o.issuer == a.issuer, "", ("o.issuer", o.issuer)("a.issuer", a.issuer) );
return void_result();
} FC_CAPTURE_AND_RETHROW( (o) ) }
void_result asset_update_bitasset_evaluator::do_apply(const asset_update_bitasset_operation& o)
{ try {
bool should_update_feeds = false;
// If the minimum number of feeds to calculate a median has changed, we need to recalculate the median
if( o.new_options.minimum_feeds != bitasset_to_update->options.minimum_feeds )
should_update_feeds = true;
db().modify(*bitasset_to_update, [&](asset_bitasset_data_object& b) {
b.options = o.new_options;
if( should_update_feeds )
b.update_median_feeds(db().head_block_time());
});
return void_result();
} FC_CAPTURE_AND_RETHROW( (o) ) }
void_result asset_update_dividend_evaluator::do_evaluate(const asset_update_dividend_operation& o)
{ try {
database& d = db();
const asset_object& a = o.asset_to_update(d);
asset_to_update = &a;
FC_ASSERT( o.issuer == a.issuer, "", ("o.issuer", o.issuer)("a.issuer", a.issuer) );
auto& params = db().get_global_properties().parameters;
if (o.new_options.payout_interval &&
*o.new_options.payout_interval < params.maintenance_interval)
FC_THROW("New payout interval may not be less than the maintenance interval",
("new_payout_interval", o.new_options.payout_interval)("maintenance_interval", params.maintenance_interval));
return void_result();
} FC_CAPTURE_AND_RETHROW( (o) ) }
void_result asset_update_dividend_evaluator::do_apply( const asset_update_dividend_operation& op )
{ try {
database& d = db();
if (!asset_to_update->dividend_data_id)
{
// this was not a dividend-paying asset, we're converting it to a dividend-paying asset
std::string dividend_distribution_account_name(boost::to_lower_copy(asset_to_update->symbol) + "-dividend-distribution");
const auto& new_acnt_object = db().create<account_object>( [&]( account_object& obj ){
obj.registrar = op.issuer;
obj.referrer = op.issuer;
obj.lifetime_referrer = op.issuer(db()).lifetime_referrer;
obj.network_fee_percentage = GRAPHENE_DEFAULT_NETWORK_PERCENT_OF_FEE;
obj.lifetime_referrer_fee_percentage = GRAPHENE_DEFAULT_LIFETIME_REFERRER_PERCENT_OF_FEE;
obj.referrer_rewards_percentage = GRAPHENE_DEFAULT_LIFETIME_REFERRER_PERCENT_OF_FEE;
obj.name = dividend_distribution_account_name;
obj.owner.weight_threshold = 1;
obj.active.weight_threshold = 1;
obj.statistics = db().create<account_statistics_object>([&](account_statistics_object& s){s.owner = obj.id;}).id;
});
const asset_dividend_data_object& dividend_data = d.create<asset_dividend_data_object>( [&]( asset_dividend_data_object& dividend_data_obj ) {
dividend_data_obj.options = op.new_options;
dividend_data_obj.dividend_distribution_account = new_acnt_object.id;
});
d.modify(*asset_to_update, [&](asset_object& a) {
a.dividend_data_id = dividend_data.id;
});
}
else
{
const asset_dividend_data_object& dividend_data = asset_to_update->dividend_data(d);
d.modify(dividend_data, [&]( asset_dividend_data_object& dividend_data_obj ) {
dividend_data_obj.options = op.new_options;
// whenever new options are set, clear out the scheduled payout/distribution times
// this will reset and cause the next distribution to happen at the next maintenance
// interval and a payout at the next_payout_time
dividend_data_obj.last_scheduled_payout_time.reset();
dividend_data_obj.last_scheduled_distribution_time.reset();
});
}
return void_result();
} FC_CAPTURE_AND_RETHROW( (op) ) }
void_result asset_update_feed_producers_evaluator::do_evaluate(const asset_update_feed_producers_evaluator::operation_type& o)
{ try {
database& d = db();
FC_ASSERT( o.new_feed_producers.size() <= d.get_global_properties().parameters.maximum_asset_feed_publishers );
for( auto id : o.new_feed_producers )
d.get_object(id);
const asset_object& a = o.asset_to_update(d);
FC_ASSERT(a.is_market_issued(), "Cannot update feed producers on a non-BitAsset.");
FC_ASSERT(!(a.options.flags & committee_fed_asset), "Cannot set feed producers on a committee-fed asset.");
FC_ASSERT(!(a.options.flags & witness_fed_asset), "Cannot set feed producers on a witness-fed asset.");
const asset_bitasset_data_object& b = a.bitasset_data(d);
bitasset_to_update = &b;
FC_ASSERT( a.issuer == o.issuer );
return void_result();
} FC_CAPTURE_AND_RETHROW( (o) ) }
void_result asset_update_feed_producers_evaluator::do_apply(const asset_update_feed_producers_evaluator::operation_type& o)
{ try {
db().modify(*bitasset_to_update, [&](asset_bitasset_data_object& a) {
//This is tricky because I have a set of publishers coming in, but a map of publisher to feed is stored.
//I need to update the map such that the keys match the new publishers, but not munge the old price feeds from
//publishers who are being kept.
//First, remove any old publishers who are no longer publishers
for( auto itr = a.feeds.begin(); itr != a.feeds.end(); )
{
if( !o.new_feed_producers.count(itr->first) )
itr = a.feeds.erase(itr);
else
++itr;
}
//Now, add any new publishers
for( auto itr = o.new_feed_producers.begin(); itr != o.new_feed_producers.end(); ++itr )
if( !a.feeds.count(*itr) )
a.feeds[*itr];
a.update_median_feeds(db().head_block_time());
});
db().check_call_orders( o.asset_to_update(db()) );
return void_result();
} FC_CAPTURE_AND_RETHROW( (o) ) }
void_result asset_global_settle_evaluator::do_evaluate(const asset_global_settle_evaluator::operation_type& op)
{ try {
const database& d = db();
asset_to_settle = &op.asset_to_settle(d);
FC_ASSERT(asset_to_settle->is_market_issued());
FC_ASSERT(asset_to_settle->can_global_settle());
FC_ASSERT(asset_to_settle->issuer == op.issuer );
FC_ASSERT(asset_to_settle->dynamic_data(d).current_supply > 0);
const auto& idx = d.get_index_type<call_order_index>().indices().get<by_collateral>();
assert( !idx.empty() );
auto itr = idx.lower_bound(boost::make_tuple(price::min(asset_to_settle->bitasset_data(d).options.short_backing_asset,
op.asset_to_settle)));
assert( itr != idx.end() && itr->debt_type() == op.asset_to_settle );
const call_order_object& least_collateralized_short = *itr;
FC_ASSERT(least_collateralized_short.get_debt() * op.settle_price <= least_collateralized_short.get_collateral(),
"Cannot force settle at supplied price: least collateralized short lacks sufficient collateral to settle.");
return void_result();
} FC_CAPTURE_AND_RETHROW( (op) ) }
void_result asset_global_settle_evaluator::do_apply(const asset_global_settle_evaluator::operation_type& op)
{ try {
database& d = db();
d.globally_settle_asset( op.asset_to_settle(db()), op.settle_price );
return void_result();
} FC_CAPTURE_AND_RETHROW( (op) ) }
void_result asset_settle_evaluator::do_evaluate(const asset_settle_evaluator::operation_type& op)
{ try {
const database& d = db();
asset_to_settle = &op.amount.asset_id(d);
FC_ASSERT(asset_to_settle->is_market_issued());
const auto& bitasset = asset_to_settle->bitasset_data(d);
FC_ASSERT(asset_to_settle->can_force_settle() || bitasset.has_settlement() );
if( bitasset.is_prediction_market )
FC_ASSERT( bitasset.has_settlement(), "global settlement must occur before force settling a prediction market" );
else if( bitasset.current_feed.settlement_price.is_null() )
FC_THROW_EXCEPTION(insufficient_feeds, "Cannot force settle with no price feed.");
FC_ASSERT(d.get_balance(d.get(op.account), *asset_to_settle) >= op.amount);
return void_result();
} FC_CAPTURE_AND_RETHROW( (op) ) }
operation_result asset_settle_evaluator::do_apply(const asset_settle_evaluator::operation_type& op)
{ try {
database& d = db();
d.adjust_balance(op.account, -op.amount);
const auto& bitasset = asset_to_settle->bitasset_data(d);
if( bitasset.has_settlement() )
{
auto settled_amount = op.amount * bitasset.settlement_price;
FC_ASSERT( settled_amount.amount <= bitasset.settlement_fund );
d.modify( bitasset, [&]( asset_bitasset_data_object& obj ){
obj.settlement_fund -= settled_amount.amount;
});
d.adjust_balance(op.account, settled_amount);
const auto& mia_dyn = asset_to_settle->dynamic_asset_data_id(d);
d.modify( mia_dyn, [&]( asset_dynamic_data_object& obj ){
obj.current_supply -= op.amount.amount;
});
return settled_amount;
}
else
{
return d.create<force_settlement_object>([&](force_settlement_object& s) {
s.owner = op.account;
s.balance = op.amount;
s.settlement_date = d.head_block_time() + asset_to_settle->bitasset_data(d).options.force_settlement_delay_sec;
}).id;
}
} FC_CAPTURE_AND_RETHROW( (op) ) }
void_result asset_publish_feeds_evaluator::do_evaluate(const asset_publish_feed_operation& o)
{ try {
database& d = db();
const asset_object& base = o.asset_id(d);
//Verify that this feed is for a market-issued asset and that asset is backed by the base
FC_ASSERT(base.is_market_issued());
const asset_bitasset_data_object& bitasset = base.bitasset_data(d);
FC_ASSERT( !bitasset.has_settlement(), "No further feeds may be published after a settlement event" );
FC_ASSERT( o.feed.settlement_price.quote.asset_id == bitasset.options.short_backing_asset );
if( d.head_block_time() > HARDFORK_480_TIME )
{
if( !o.feed.core_exchange_rate.is_null() )
{
FC_ASSERT( o.feed.core_exchange_rate.quote.asset_id == asset_id_type() );
}
}
else
{
if( (!o.feed.settlement_price.is_null()) && (!o.feed.core_exchange_rate.is_null()) )
{
FC_ASSERT( o.feed.settlement_price.quote.asset_id == o.feed.core_exchange_rate.quote.asset_id );
}
}
//Verify that the publisher is authoritative to publish a feed
if( base.options.flags & witness_fed_asset )
{
FC_ASSERT( d.get(GRAPHENE_WITNESS_ACCOUNT).active.account_auths.count(o.publisher) );
}
else if( base.options.flags & committee_fed_asset )
{
FC_ASSERT( d.get(GRAPHENE_COMMITTEE_ACCOUNT).active.account_auths.count(o.publisher) );
}
else
{
FC_ASSERT(bitasset.feeds.count(o.publisher));
}
return void_result();
} FC_CAPTURE_AND_RETHROW((o)) }
void_result asset_publish_feeds_evaluator::do_apply(const asset_publish_feed_operation& o)
{ try {
database& d = db();
const asset_object& base = o.asset_id(d);
const asset_bitasset_data_object& bad = base.bitasset_data(d);
auto old_feed = bad.current_feed;
// Store medians for this asset
d.modify(bad , [&o,&d](asset_bitasset_data_object& a) {
a.feeds[o.publisher] = make_pair(d.head_block_time(), o.feed);
a.update_median_feeds(d.head_block_time());
});
if( !(old_feed == bad.current_feed) )
db().check_call_orders(base);
return void_result();
} FC_CAPTURE_AND_RETHROW((o)) }
void_result asset_claim_fees_evaluator::do_evaluate( const asset_claim_fees_operation& o )
{ try {
FC_ASSERT( db().head_block_time() > HARDFORK_413_TIME );
FC_ASSERT( o.amount_to_claim.asset_id(db()).issuer == o.issuer, "Asset fees may only be claimed by the issuer" );
return void_result();
} FC_CAPTURE_AND_RETHROW( (o) ) }
void_result asset_claim_fees_evaluator::do_apply( const asset_claim_fees_operation& o )
{ try {
database& d = db();
const asset_object& a = o.amount_to_claim.asset_id(d);
const asset_dynamic_data_object& addo = a.dynamic_asset_data_id(d);
FC_ASSERT( o.amount_to_claim.amount <= addo.accumulated_fees, "Attempt to claim more fees than have accumulated", ("addo",addo) );
d.modify( addo, [&]( asset_dynamic_data_object& _addo ) {
_addo.accumulated_fees -= o.amount_to_claim.amount;
});
d.adjust_balance( o.issuer, o.amount_to_claim );
return void_result();
} FC_CAPTURE_AND_RETHROW( (o) ) }
} } // graphene::chain
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