智能合约ERC20项目DAPP系统开发方案解析理念

parameter_types! {
    pub const CouncilMotionDuration: BlockNumber = 5 * DAYS;
    pub const CouncilMaxProposals: u32 = 100;
    pub const CouncilMaxMembers: u32 = 100;
}

type CouncilCollective = pallet_collective::Instance1;
impl pallet_collective::Config<CouncilCollective> for Runtime {
    type Origin = Origin;
    type Proposal = Call;
    type Event = Event;
    type MotionDuration = CouncilMotionDuration;
    type MaxProposals = CouncilMaxProposals;
    type MaxMembers = CouncilMaxMembers;
    type DefaultVote = pallet_collective::PrimeDefaultVote;
    type WeightInfo = pallet_collective::weights::SubstrateWeight<Runtime>;
}

parameter_types! {
    pub const CandidacyBond: Balance = 10 * DOLLARS;
    // 1 storage item created, key size is 32 bytes, value size is 16+16.
    pub const VotingBondBase: Balance = deposit(1, 64);
    // additional data per vote is 32 bytes (account id).
    pub const VotingBondFactor: Balance = deposit(0, 32);
    pub const TermDuration: BlockNumber = 7 * DAYS;
    pub const DesiredMembers: u32 = 13;
    pub const DesiredRunnersUp: u32 = 7;
    pub const ElectionsPhragmenPalletId: LockIdentifier = *b"phrelect";
}

// Make sure that there are no more than `MaxMembers` members elected via elections-phragmen.
const_assert!(DesiredMembers::get() <= CouncilMaxMembers::get());

impl pallet_elections_phragmen::Config for Runtime {
    type Event = Event;
    type PalletId = ElectionsPhragmenPalletId;
    type Currency = Balances;
    type ChangeMembers = Council;
    // NOTE: this implies that council's genesis members cannot be set directly and must come from
    // this module.
    type InitializeMembers = Council;
    type CurrencyToVote = U128CurrencyToVote;
    type CandidacyBond = CandidacyBond;
    type VotingBondBase = VotingBondBase;
    type VotingBondFactor = VotingBondFactor;
    type LoserCandidate = ();
    type KickedMember = ();
    type DesiredMembers = DesiredMembers;
    type DesiredRunnersUp = DesiredRunnersUp;
    type TermDuration = TermDuration;
    type WeightInfo = pallet_elections_phragmen::weights::SubstrateWeight<Runtime>;
}

parameter_types! {
    pub const TechnicalMotionDuration: BlockNumber = 5 * DAYS;
    pub const TechnicalMaxProposals: u32 = 100;
    pub const TechnicalMaxMembers: u32 = 100;
}

type TechnicalCollective = pallet_collective::Instance2;
impl pallet_collective::Config<TechnicalCollective> for Runtime {
    type Origin = Origin;
    type Proposal = Call;
    type Event = Event;
    type MotionDuration = TechnicalMotionDuration;
    type MaxProposals = TechnicalMaxProposals;
    type MaxMembers = TechnicalMaxMembers;
    type DefaultVote = pallet_collective::PrimeDefaultVote;
    type WeightInfo = pallet_collective::weights::SubstrateWeight<Runtime>;
}

type EnsureRootOrHalfCouncil = EitherOfDiverse<
    EnsureRoot<AccountId>,
    pallet_collective::EnsureProportionMoreThan<AccountId, CouncilCollective, 1, 2>,
>;
impl pallet_membership::Config<pallet_membership::Instance1> for Runtime {
    type Event = Event;
    type AddOrigin = EnsureRootOrHalfCouncil;
    type RemoveOrigin = EnsureRootOrHalfCouncil;
    type SwapOrigin = EnsureRootOrHalfCouncil;
    type ResetOrigin = EnsureRootOrHalfCouncil;
    type PrimeOrigin = EnsureRootOrHalfCouncil;
    type MembershipInitialized = TechnicalCommittee;
    type MembershipChanged = TechnicalCommittee;
    type MaxMembers = TechnicalMaxMembers;
    type WeightInfo = pallet_membership::weights::SubstrateWeight<Runtime>;
}

parameter_types! {
    pub const ProposalBond: Permill = Permill::from_percent(5);
    pub const ProposalBondMinimum: Balance = 1 * DOLLARS;
    pub const SpendPeriod: BlockNumber = 1 * DAYS;
    pub const Burn: Permill = Permill::from_percent(50);
    pub const TipCountdown: BlockNumber = 1 * DAYS;
    pub const TipFindersFee: Percent = Percent::from_percent(20);
    pub const TipReportDepositBase: Balance = 1 * DOLLARS;
    pub const DataDepositPerByte: Balance = 1 * CENTS;
    pub const TreasuryPalletId: PalletId = PalletId(*b"py/trsry");
    pub const MaximumReasonLength: u32 = 300;
    pub const MaxApprovals: u32 = 100;
}

impl pallet_treasury::Config for Runtime {
    type PalletId = TreasuryPalletId;
    type Currency = Balances;
    type ApproveOrigin = EitherOfDiverse<
        EnsureRoot<AccountId>,
        pallet_collective::EnsureProportionAtLeast<AccountId, CouncilCollective, 3, 5>,
    >;
    type RejectOrigin = EitherOfDiverse<
        EnsureRoot<AccountId>,
        pallet_collective::EnsureProportionMoreThan<AccountId, CouncilCollective, 1, 2>,
    >;
    type Event = Event;
    type OnSlash = ();
    type ProposalBond = ProposalBond;
    type ProposalBondMinimum = ProposalBondMinimum;
    type ProposalBondMaximum = ();
    type SpendPeriod = SpendPeriod;
    type Burn = Burn;
    type BurnDestination = ();
    type SpendFunds = Bounties;
    type WeightInfo = pallet_treasury::weights::SubstrateWeight<Runtime>;
    type MaxApprovals = MaxApprovals;
    type SpendOrigin = frame_support::traits::NeverEnsureOrigin<u128>;
}