metadata.sol

// SPDX-License-Identifier: GPL-3.0

pragma solidity >=0.7.0;

// **Notice**
// The solidity contract only define the interface of metadata contract. The real
// implementation is in `core/executor/src/system_contract/metadata`.

contract MetadataManager {
    uint64 constant U64_MAX = 2 ** 64 - 1;

    struct MetadataVersion {
        uint64 start;
        uint64 end;
    }

    struct ValidatorExtend {
        bytes bls_pub_key;
        bytes pub_key;
        address address_;
        uint32 propose_weight;
        uint32 vote_weight;
    }

    struct Metadata {
        MetadataVersion version;
        uint64 epoch;
        ValidatorExtend[] verifier_list;
        ProposeCount[] propose_counter;
        ConsensusConfig consensus_config;
    }

    struct ProposeCount {
        address address_;
        uint64 count;
    }

    struct ConsensusConfig {
        uint64 propose_ratio;
        uint64 prevote_ratio;
        uint64 precommit_ratio;
        uint64 brake_ratio;
        uint64 tx_num_limit;
        uint64 max_tx_size;
        uint64 gas_limit;
        uint64 gas_price;
        uint64 interval;
    }

    struct CkbRelatedInfo {
        bytes32 metadata_type_id;
        bytes32 checkpoint_type_id;
        bytes32 xudt_args;
        bytes32 stake_smt_type_id;
        bytes32 delegate_smt_type_id;
        bytes32 reward_smt_type_id;
    }

    // to store all metadata with epoch as key
    mapping(uint64 => Metadata) metadata_set;

    // to identify current highest epoch number
    uint64 highest_epoch;

    function construct() public {}

    function appendMetadata(Metadata memory metadata) public {}

    function updateConsensusConfig(ConsensusConfig memory config) public view {}

    function getMetadata(uint64 epoch) public view returns (Metadata memory) {}

    function setCkbRelatedInfo() public view {}
}