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custom_evaluators.cpp
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/*
* Copyright (c) 2019 oxarbitrage 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/database.hpp>
#include <graphene/custom_operations/custom_operations_plugin.hpp>
#include <graphene/custom_operations/custom_objects.hpp>
#include <graphene/custom_operations/custom_evaluators.hpp>
namespace graphene { namespace custom_operations {
custom_generic_evaluator::custom_generic_evaluator(database& db, const account_id_type account)
{
_db = &db;
_account = account;
}
vector<object_id_type> custom_generic_evaluator::do_apply(const account_storage_map& op)
{
auto &index = _db->get_index_type<account_storage_index>().indices().get<by_account_catalog_key>();
vector<object_id_type> results;
if (op.remove)
{
for(auto const& row: op.key_values) {
auto itr = index.find(make_tuple(_account, op.catalog, row.first));
if(itr != index.end()) {
results.push_back(itr->id);
_db->remove(*itr);
}
}
}
else {
for(auto const& row: op.key_values) {
if(row.first.length() > CUSTOM_OPERATIONS_MAX_KEY_SIZE)
{
wlog("Key can't be bigger than ${max} characters", ("max", CUSTOM_OPERATIONS_MAX_KEY_SIZE));
continue;
}
auto itr = index.find(make_tuple(_account, op.catalog, row.first));
if(itr == index.end())
{
try {
auto created = _db->create<account_storage_object>( [&op, this, &row]( account_storage_object& aso ) {
aso.catalog = op.catalog;
aso.account = _account;
aso.key = row.first;
if(row.second.valid())
aso.value = fc::json::from_string(*row.second);
});
results.push_back(created.id);
}
catch(const fc::parse_error_exception& e) { wlog(e.to_detail_string()); }
}
else
{
try {
_db->modify(*itr, [&op, this, &row](account_storage_object &aso) {
aso.key = row.first;
if(row.second.valid())
aso.value = fc::json::from_string(*row.second);
else
aso.value.reset();
});
results.push_back(itr->id);
}
catch(const fc::parse_error_exception& e) { wlog((e.to_detail_string())); }
}
}
}
return results;
}
} }