06a9488f8b
Use static variant to allow the types of vesting balances to be easily extended and the creation operation allows for many different types of initialization parameters. Added a check that requires a minimum claim date which allows creating of vesting balance objects with a cliff.
133 lines
5.1 KiB
C++
133 lines
5.1 KiB
C++
/*
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* Copyright (c) 2015, Cryptonomex, Inc.
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* All rights reserved.
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*
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* This source code is provided for evaluation in private test networks only, until September 8, 2015. After this date, this license expires and
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* the code may not be used, modified or distributed for any purpose. Redistribution and use in source and binary forms, with or without modification,
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* are permitted until September 8, 2015, provided that the following conditions are met:
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*
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* 1. The code and/or derivative works are used only for private test networks consisting of no more than 10 P2P nodes.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
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* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
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* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <graphene/chain/account_object.hpp>
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#include <graphene/chain/database.hpp>
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#include <graphene/chain/vesting_balance_evaluator.hpp>
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#include <graphene/chain/vesting_balance_object.hpp>
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namespace graphene { namespace chain {
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object_id_type vesting_balance_create_evaluator::do_evaluate( const vesting_balance_create_operation& op )
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{
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const database& d = db();
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const account_object& creator_account = op.creator( d );
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/* const account_object& owner_account = */ op.owner( d );
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// TODO: Check asset authorizations and withdrawals
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FC_ASSERT( op.amount.amount > 0 );
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FC_ASSERT( d.get_balance( creator_account.id, op.amount.asset_id ) >= op.amount );
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FC_ASSERT( !op.amount.asset_id(d).is_transfer_restricted() );
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return object_id_type();
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}
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struct init_policy_visitor
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{
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typedef void result_type;
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init_policy_visitor( vesting_policy& po,
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const share_type& begin_balance,
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const fc::time_point_sec& n ):p(po),init_balance(begin_balance),now(n){}
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vesting_policy& p;
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share_type init_balance;
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fc::time_point_sec now;
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void operator()( const linear_vesting_policy_initializer& i )const
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{
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linear_vesting_policy policy;
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policy.vesting_seconds = i.vesting_seconds;
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policy.begin_date = i.begin_date;
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policy.start_claim = i.start_claim;
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policy.begin_balance = init_balance;
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p = policy;
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}
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void operator()( const ccd_vesting_policy_initializer& i )const
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{
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cdd_vesting_policy policy;
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policy.vesting_seconds = i.vesting_seconds;
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policy.start_claim = i.start_claim;
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policy.coin_seconds_earned = 0;
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policy.coin_seconds_earned_last_update = now;
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p = policy;
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}
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};
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object_id_type vesting_balance_create_evaluator::do_apply( const vesting_balance_create_operation& op )
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{
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database& d = db();
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const time_point_sec now = d.head_block_time();
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FC_ASSERT( d.get_balance( op.creator, op.amount.asset_id ) >= op.amount );
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d.adjust_balance( op.creator, -op.amount );
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const vesting_balance_object& vbo = d.create< vesting_balance_object >( [&]( vesting_balance_object& obj )
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{
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//WARNING: The logic to create a vesting balance object is replicated in vesting_balance_worker_type::initializer::init.
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// If making changes to this logic, check if those changes should also be made there as well.
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obj.owner = op.owner;
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obj.balance = op.amount;
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op.policy.visit( init_policy_visitor( obj.policy, op.amount.amount, now ) );
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} );
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return vbo.id;
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}
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void_result vesting_balance_withdraw_evaluator::do_evaluate( const vesting_balance_withdraw_operation& op )
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{
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const database& d = db();
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const time_point_sec now = d.head_block_time();
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const vesting_balance_object& vbo = op.vesting_balance( d );
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FC_ASSERT( op.owner == vbo.owner );
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FC_ASSERT( vbo.is_withdraw_allowed( now, op.amount ) );
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assert( op.amount <= vbo.balance ); // is_withdraw_allowed should fail before this check is reached
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/* const account_object& owner_account = */ op.owner( d );
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// TODO: Check asset authorizations and withdrawals
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return void_result();
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}
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void_result vesting_balance_withdraw_evaluator::do_apply( const vesting_balance_withdraw_operation& op )
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{
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database& d = db();
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const time_point_sec now = d.head_block_time();
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const vesting_balance_object& vbo = op.vesting_balance( d );
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// Allow zero balance objects to stick around, (1) to comply
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// with the chain's "objects live forever" design principle, (2)
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// if it's cashback or worker, it'll be filled up again.
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d.modify( vbo, [&]( vesting_balance_object& vbo )
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{
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vbo.withdraw( now, op.amount );
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} );
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d.adjust_balance( op.owner, op.amount );
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// TODO: Check asset authorizations and withdrawals
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return void_result();
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}
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} } // graphene::chain
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