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Staking improve payout_validator (#5208)

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* add documentation and optimise payout_validator a bit

* bump spec version to be safe

this is just in case clipped exposure and exposure have different fields
own and total. This shouldn't be the case but better be safe in case
storage is wrong.

* Update frame/staking/src/lib.rs

Co-Authored-By: joe petrowski <25483142+joepetrowski@users.noreply.github.com>

Co-authored-by: joe petrowski <25483142+joepetrowski@users.noreply.github.com>
This commit is contained in:
thiolliere
2020-03-10 20:54:29 +01:00
committed by GitHub
parent 60b65695e2
commit 1b4dcd1f23
2 changed files with 7 additions and 3 deletions
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substrate/bin/node/runtime/src/lib.rs
+1 -1
View File
@@ -82,7 +82,7 @@ pub const VERSION: RuntimeVersion = RuntimeVersion {
// and set impl_version to 0. If only runtime
// implementation changes and behavior does not, then leave spec_version as
// is and increment impl_version.
spec_version: 234,
spec_version: 235,
impl_version: 0,
apis: RUNTIME_API_VERSIONS,
};
substrate/frame/staking/src/lib.rs
+6 -2
View File
@@ -767,6 +767,7 @@ decl_storage! {
///
/// This is similar to [`ErasStakers`] but number of nominators exposed is reduce to the
/// `T::MaxNominatorRewardedPerValidator` biggest stakers.
/// (Note: the field `total` and `own` of the exposure remains unchanged).
/// This is used to limit the i/o cost for the nominator payout.
///
/// This is keyed fist by the era index to allow bulk deletion and then the stash account.
@@ -1349,7 +1350,10 @@ decl_module! {
/// - `who` is the controller account of the nominator to pay out.
/// - `era` may not be lower than one following the most recently paid era. If it is higher,
/// then it indicates an instruction to skip the payout of all previous eras.
/// - `validators` is the list of all validators that `who` had exposure to during `era`.
/// - `validators` is the list of all validators that `who` had exposure to during `era`,
/// alongside the index of `who` in the clipped exposure of the validator.
/// I.e. each element is a tuple of
/// `(validator, index of `who` in clipped exposure of validator)`.
/// If it is incomplete, then less than the full reward will be paid out.
/// It must not exceed `MAX_NOMINATIONS`.
///
@@ -1542,7 +1546,7 @@ impl<T: Trait> Module<T> {
let era_reward_points = <ErasRewardPoints<T>>::get(&era);
let commission = Self::eras_validator_prefs(&era, &ledger.stash).commission;
let exposure = <ErasStakers<T>>::get(&era, &ledger.stash);
let exposure = <ErasStakersClipped<T>>::get(&era, &ledger.stash);
let exposure_part = Perbill::from_rational_approximation(
exposure.own,