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Merge pull request #150 from eosnetworkfoundation/tokenomics-2
REX/Tokenomics 2.0
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| add_contract(eosio.bpay eosio.bpay ${CMAKE_CURRENT_SOURCE_DIR}/src/eosio.bpay.cpp) | ||
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| target_include_directories(eosio.bpay PUBLIC | ||
| ${CMAKE_CURRENT_SOURCE_DIR}/include | ||
| ${CMAKE_CURRENT_SOURCE_DIR}/../eosio.system/include | ||
| ${CMAKE_CURRENT_SOURCE_DIR}/../eosio.token/include) | ||
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| set_target_properties(eosio.bpay | ||
| PROPERTIES | ||
| RUNTIME_OUTPUT_DIRECTORY "${CMAKE_CURRENT_BINARY_DIR}") | ||
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| configure_file( ${CMAKE_CURRENT_SOURCE_DIR}/ricardian/eosio.bpay.contracts.md.in ${CMAKE_CURRENT_BINARY_DIR}/ricardian/eosio.bpay.contracts.md @ONLY ) | ||
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| target_compile_options( eosio.bpay PUBLIC -R${CMAKE_CURRENT_SOURCE_DIR}/ricardian -R${CMAKE_CURRENT_BINARY_DIR}/ricardian ) |
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| #pragma once | ||
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| #include <eosio/eosio.hpp> | ||
| #include <eosio.system/eosio.system.hpp> | ||
| #include <eosio.token/eosio.token.hpp> | ||
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| using namespace std; | ||
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| namespace eosio { | ||
| /** | ||
| * The `eosio.bpay` contract handles system bpay distribution. | ||
| */ | ||
| class [[eosio::contract("eosio.bpay")]] bpay : public contract { | ||
| public: | ||
| using contract::contract; | ||
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| /** | ||
| * ## TABLE `rewards` | ||
| * | ||
| * @param owner - block producer owner account | ||
| * @param quantity - reward quantity in EOS | ||
| * | ||
| * ### example | ||
| * | ||
| * ```json | ||
| * [ | ||
| * { | ||
| * "owner": "alice", | ||
| * "quantity": "8.800 EOS" | ||
| * } | ||
| * ] | ||
| * ``` | ||
| */ | ||
| struct [[eosio::table("rewards")]] rewards_row { | ||
| name owner; | ||
| asset quantity; | ||
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| uint64_t primary_key() const { return owner.value; } | ||
| }; | ||
| typedef eosio::multi_index< "rewards"_n, rewards_row > rewards_table; | ||
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| /** | ||
| * Claim rewards for a block producer. | ||
| * | ||
| * @param owner - block producer owner account | ||
| */ | ||
| [[eosio::action]] | ||
| void claimrewards( const name owner); | ||
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| [[eosio::on_notify("eosio.token::transfer")]] | ||
| void on_transfer( const name from, const name to, const asset quantity, const string memo ); | ||
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| private: | ||
| }; | ||
| } /// namespace eosio |
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| <h1 class="contract">claimrewards</h1> | ||
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| --- | ||
| spec_version: "0.2.0" | ||
| title: Claim Rewards | ||
| summary: '{{nowrap owner}} claims block production rewards' | ||
| icon: @ICON_BASE_URL@/@MULTISIG_ICON_URI@ | ||
| --- | ||
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| {{owner}} claims block production rewards accumulated through network fees. |
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| #include <eosio.bpay/eosio.bpay.hpp> | ||
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| namespace eosio { | ||
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| void bpay::claimrewards( const name owner ) { | ||
| require_auth( owner ); | ||
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| rewards_table _rewards( get_self(), get_self().value ); | ||
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| const auto& row = _rewards.get( owner.value, "no rewards to claim" ); | ||
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| eosio::token::transfer_action transfer( "eosio.token"_n, { get_self(), "active"_n }); | ||
| transfer.send( get_self(), owner, row.quantity, "producer block pay" ); | ||
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| _rewards.erase(row); | ||
| } | ||
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| void bpay::on_transfer( const name from, const name to, const asset quantity, const string memo ) { | ||
| if (from == get_self() || to != get_self()) { | ||
| return; | ||
| } | ||
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| // ignore eosio system incoming transfers (caused by bpay income transfers eosio => eosio.bpay => producer) | ||
| if ( from == "eosio"_n) return; | ||
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| symbol system_symbol = eosiosystem::system_contract::get_core_symbol(); | ||
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| check( quantity.symbol == system_symbol, "only core token allowed" ); | ||
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| rewards_table _rewards( get_self(), get_self().value ); | ||
| eosiosystem::producers_table _producers( "eosio"_n, "eosio"_n.value ); | ||
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| eosiosystem::global_state_singleton _global("eosio"_n, "eosio"_n.value); | ||
| check( _global.exists(), "global state does not exist"); | ||
| uint16_t producer_count = _global.get().last_producer_schedule_size; | ||
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| asset reward = quantity / producer_count; | ||
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| // get producer with the most votes | ||
| // using `by_votes` secondary index | ||
| auto idx = _producers.get_index<"prototalvote"_n>(); | ||
| auto prod = idx.begin(); | ||
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| // get top n producers by vote, excluding inactive | ||
| std::vector<name> top_producers; | ||
| while (true) { | ||
| if (prod == idx.end()) break; | ||
| if (prod->is_active == false) continue; | ||
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| top_producers.push_back(prod->owner); | ||
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| if (top_producers.size() == producer_count) break; | ||
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| prod++; | ||
| } | ||
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| // distribute rewards to top producers | ||
| for (auto producer : top_producers) { | ||
| auto row = _rewards.find( producer.value ); | ||
| if (row == _rewards.end()) { | ||
| _rewards.emplace( get_self(), [&](auto& row) { | ||
| row.owner = producer; | ||
| row.quantity = reward; | ||
| }); | ||
| } else { | ||
| _rewards.modify(row, get_self(), [&](auto& row) { | ||
| row.quantity += reward; | ||
| }); | ||
| } | ||
| } | ||
| } | ||
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| } /// namespace eosio |
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