peerplays_migrated/libraries/chain/witness_evaluator.cpp

/*
 * Copyright (c) 2015 Cryptonomex, Inc., and contributors.  All rights reserved.
 *
 * 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/witness_evaluator.hpp>
#include <graphene/chain/witness_object.hpp>
#include <graphene/chain/committee_member_object.hpp>
#include <graphene/chain/account_object.hpp>
#include <graphene/chain/database.hpp>
#include <graphene/chain/protocol/vote.hpp>

namespace graphene { namespace chain {

void_result witness_create_evaluator::do_evaluate( const witness_create_operation& op )
{ try {
   FC_ASSERT(db().get(op.witness_account).is_lifetime_member());
   return void_result();
} FC_CAPTURE_AND_RETHROW( (op) ) }

object_id_type witness_create_evaluator::do_apply( const witness_create_operation& op )
{ try {
   vote_id_type vote_id;
   db().modify(db().get_global_properties(), [&vote_id](global_property_object& p) {
      vote_id = get_next_vote_id(p, vote_id_type::witness);
   });

   const auto& new_witness_object = db().create<witness_object>( [&]( witness_object& obj ){
         obj.witness_account  = op.witness_account;
         obj.signing_key      = op.block_signing_key;
         obj.vote_id          = vote_id;
         obj.url              = op.url;
   });
   return new_witness_object.id;
} FC_CAPTURE_AND_RETHROW( (op) ) }

void_result witness_update_evaluator::do_evaluate( const witness_update_operation& op )
{ try {
   FC_ASSERT(db().get(op.witness).witness_account == op.witness_account);
   return void_result();
} FC_CAPTURE_AND_RETHROW( (op) ) }

void_result witness_update_evaluator::do_apply( const witness_update_operation& op )
{ try {
   database& _db = db();
   _db.modify(
      _db.get(op.witness),
      [&]( witness_object& wit )
      {
         if( op.new_url.valid() )
            wit.url = *op.new_url;
         if( op.new_signing_key.valid() )
            wit.signing_key = *op.new_signing_key;
      });
   return void_result();
} FC_CAPTURE_AND_RETHROW( (op) ) }

} } // graphene::chain