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better way to resolve Phase::Emergency via governance (#10663)

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* better way to resolve Phase::Emergency via governance

* Update frame/election-provider-multi-phase/src/lib.rs

Co-authored-by: Zeke Mostov <z.mostov@gmail.com>

* review grumbles

* Update frame/election-provider-support/src/onchain.rs

Co-authored-by: Shawn Tabrizi <shawntabrizi@gmail.com>

* revert usize -> u32

Co-authored-by: Zeke Mostov <z.mostov@gmail.com>
Co-authored-by: Shawn Tabrizi <shawntabrizi@gmail.com>
This commit is contained in:
Kian Paimani
2022-01-27 11:00:48 +01:00
committed by GitHub
parent 2b9e3a73f6
commit 498c3a5ecc
5 changed files with 122 additions and 22 deletions
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substrate/frame/election-provider-support/src/lib.rs
+16
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@@ -319,6 +319,22 @@ pub trait ElectionProvider {
fn elect() -> Result<Supports<Self::AccountId>, Self::Error>;
}
/// A sub-trait of the [`ElectionProvider`] for cases where we need to be sure an election needs to
/// happen instantly, not asynchronously.
///
/// The same `DataProvider` is assumed to be used.
///
/// Consequently, allows for control over the amount of data that is being fetched from the
/// [`ElectionProvider::DataProvider`].
pub trait InstantElectionProvider: ElectionProvider {
/// Elect a new set of winners, instantly, with the given given limits set on the
/// `DataProvider`.
fn instant_elect(
maybe_max_voters: Option<usize>,
maybe_max_targets: Option<usize>,
) -> Result<Supports<Self::AccountId>, Self::Error>;
}
/// An election provider to be used only for testing.
#[cfg(feature = "std")]
pub struct NoElection<X>(sp_std::marker::PhantomData<X>);