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Add a bounded fallback on failed elections (#10988)

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* Allow `pallet-election-provider` to accept smaller
solutions, issue #9478

* Fixing a typo

* Adding some more tests
Removing a seemingly outdated comment

* making it a URL

* Updating test name as per suggestion

Co-authored-by: Kian Paimani <5588131+kianenigma@users.noreply.github.com>

* Updating documentation to be more explicit

And to follow the general guidelines

Co-authored-by: Kian Paimani <5588131+kianenigma@users.noreply.github.com>

* Fixing formatting

* `Fallback` now of type `InstantElectionProvider`
Some cleanups

* Allow `pallet-election-provider` to accept smaller
solutions, issue #9478

* Fixing a typo

* Adding some more tests
Removing a seemingly outdated comment

* making it a URL

* Updating test name as per suggestion

Co-authored-by: Kian Paimani <5588131+kianenigma@users.noreply.github.com>

* Updating documentation to be more explicit

And to follow the general guidelines

Co-authored-by: Kian Paimani <5588131+kianenigma@users.noreply.github.com>

* Fixing formatting

* `Fallback` now of type `InstantElectionProvider`
Some cleanups

* Merging types into one type with generics

* Removing `ConstUSize` and use `ConstU32`

* cleaning up the code

* deprecating `OnChainSequentialPhragmen`
Renaming it to `UnboundedSequentialPhragmen` which should only be used
at genesis and for testing.
Use preferrably `BoundedOnChainSequentialPhragmen`

* Amending docs

* Adding some explicit imports

* Implementing generic `BoundedOnchainExecution`
Removing the deprecated `OnChainSequentialPhragmen`

* Use the right Balancing strategy

* Refactoring `onchain::Config`
Creating `onchain::ExecutionConfig`

* Merge master

* fmt

* Name cleanups after review suggestions

* cosmetics

* renaming `instant_elect` to `elect_with_bounds`
Other corresponding changes as per @kianenigma feedback

* `BoundedOnchainExecution` -> `BoundedExecution`
And `UnboundedOnchainExecution` -> `UnboundedExecution`

* feedback from kian

* fmt + unneeded import

Co-authored-by: Kian Paimani <5588131+kianenigma@users.noreply.github.com>
Co-authored-by: kianenigma <kian@parity.io>
This commit is contained in:
Georges
2022-03-25 20:15:50 +00:00
committed by GitHub
parent cbfb1f0e3b
commit e9bfdd9a0d
11 changed files with 225 additions and 137 deletions
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substrate/frame/staking/src/mock.rs
+8 -4
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@@ -18,7 +18,9 @@
//! Test utilities
use crate::{self as pallet_staking, *};
use frame_election_provider_support::{onchain, SortedListProvider, VoteWeight};
use frame_election_provider_support::{
onchain, SequentialPhragmen, SortedListProvider, VoteWeight,
};
use frame_support::{
assert_ok, parameter_types,
traits::{
@@ -245,8 +247,10 @@ impl pallet_bags_list::Config for Test {
type Score = VoteWeight;
}
impl onchain::Config for Test {
type Accuracy = Perbill;
pub struct OnChainSeqPhragmen;
impl onchain::ExecutionConfig for OnChainSeqPhragmen {
type System = Test;
type Solver = SequentialPhragmen<AccountId, Perbill>;
type DataProvider = Staking;
}
@@ -268,7 +272,7 @@ impl crate::pallet::pallet::Config for Test {
type NextNewSession = Session;
type MaxNominatorRewardedPerValidator = ConstU32<64>;
type OffendingValidatorsThreshold = OffendingValidatorsThreshold;
type ElectionProvider = onchain::OnChainSequentialPhragmen<Self>;
type ElectionProvider = onchain::UnboundedExecution<OnChainSeqPhragmen>;
type GenesisElectionProvider = Self::ElectionProvider;
// NOTE: consider a macro and use `UseNominatorsAndValidatorsMap<Self>` as well.
type VoterList = BagsList;