[−][src]Trait pallet_staking::Trait
Associated Types
type Currency: LockableCurrency<Self::AccountId, Moment = Self::BlockNumber>
The staking balance.
type UnixTime: UnixTime
Time used for computing era duration.
It is guaranteed to start being called from the first on_finalize. Thus value at genesis
is not used.
type CurrencyToVote: Convert<BalanceOf<Self>, VoteWeight> + Convert<u128, BalanceOf<Self>>
Convert a balance into a number used for election calculation. This must fit into a u64
but is allowed to be sensibly lossy. The u64 is used to communicate with the
sp_npos_elections crate which accepts u64 numbers and does operations in 128.
Consequently, the backward convert is used convert the u128s from sp-elections back to a
BalanceOf.
type RewardRemainder: OnUnbalanced<<Self::Currency as Currency<Self::AccountId>>::NegativeImbalance>
Tokens have been minted and are unused for validator-reward. See Era payout.
type Event: From<Event<Self>> + Into<Self::Event>
The overarching event type.
type Slash: OnUnbalanced<<Self::Currency as Currency<Self::AccountId>>::NegativeImbalance>
Handler for the unbalanced reduction when slashing a staker.
type Reward: OnUnbalanced<<Self::Currency as Currency<Self::AccountId>>::PositiveImbalance>
Handler for the unbalanced increment when rewarding a staker.
type SessionsPerEra: Get<SessionIndex>
Number of sessions per era.
type BondingDuration: Get<EraIndex>
Number of eras that staked funds must remain bonded for.
type SlashDeferDuration: Get<EraIndex>
Number of eras that slashes are deferred by, after computation.
This should be less than the bonding duration. Set to 0 if slashes should be applied immediately, without opportunity for intervention.
type SlashCancelOrigin: EnsureOrigin<Self::Origin>
The origin which can cancel a deferred slash. Root can always do this.
type SessionInterface: SessionInterface<Self::AccountId>
Interface for interacting with a session module.
type RewardCurve: Get<&'static PiecewiseLinear<'static>>
The NPoS reward curve used to define yearly inflation. See Era payout.
type NextNewSession: EstimateNextNewSession<Self::BlockNumber>
Something that can estimate the next session change, accurately or as a best effort guess.
type ElectionLookahead: Get<Self::BlockNumber>
The number of blocks before the end of the era from which election submissions are allowed.
Setting this to zero will disable the offchain compute and only on-chain seq-phragmen will be used.
This is bounded by being within the last session. Hence, setting it to a value more than the length of a session will be pointless.
type Call: Dispatchable + From<Call<Self>> + IsSubType<Call<Self>> + Clone
The overarching call type.
type MaxIterations: Get<u32>
Maximum number of balancing iterations to run in the offchain submission.
If set to 0, balance_solution will not be executed at all.
type MinSolutionScoreBump: Get<Perbill>
The threshold of improvement that should be provided for a new solution to be accepted.
type MaxNominatorRewardedPerValidator: Get<u32>
The maximum number of nominators rewarded for each validator.
For each validator only the $MaxNominatorRewardedPerValidator biggest stakers can claim
their reward. This used to limit the i/o cost for the nominator payout.
type UnsignedPriority: Get<TransactionPriority>
A configuration for base priority of unsigned transactions.
This is exposed so that it can be tuned for particular runtime, when multiple pallets send unsigned transactions.
type WeightInfo: WeightInfo
Weight information for extrinsics in this pallet.