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staking/election: prolonged era and emergency mode for governance submission. (#8912)

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* Implementation but weird initial era in tests

* Emergency mode for elections. (#8918)

* do some testing, some logging.

* some testing apparatus

* genesis election provider (#8970)

* genesis election provider

* fix historical stuff

* Fix test

* remove dbg

* Apply suggestions from code review

Co-authored-by: Zeke Mostov <32168567+emostov@users.noreply.github.com>
Co-authored-by: Peter Goodspeed-Niklaus <coriolinus@users.noreply.github.com>

* capitalize comment and name without conflict

* fix log

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

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

Co-authored-by: Peter Goodspeed-Niklaus <coriolinus@users.noreply.github.com>

* apply suggestion on tests

* remove testing modifications

* Apply suggestions from code review

Co-authored-by: Kian Paimani <5588131+kianenigma@users.noreply.github.com>
Co-authored-by: Dmitry Kashitsyn <korvin@deeptown.org>

* apply suggestion

* fix master merge

Co-authored-by: kianenigma <kian@parity.io>
Co-authored-by: Kian Paimani <5588131+kianenigma@users.noreply.github.com>
Co-authored-by: Zeke Mostov <32168567+emostov@users.noreply.github.com>
Co-authored-by: Peter Goodspeed-Niklaus <coriolinus@users.noreply.github.com>
Co-authored-by: Dmitry Kashitsyn <korvin@deeptown.org>
This commit is contained in:
Guillaume Thiolliere
2021-06-14 16:02:45 +02:00
committed by GitHub
parent cd52b3f2bc
commit ebf5e771fc
15 changed files with 422 additions and 193 deletions
Download Patch File Download Diff File Expand all files Collapse all files
substrate/frame/session/src/lib.rs
+15 -12
View File
@@ -238,12 +238,19 @@ pub trait SessionManager<ValidatorId> {
/// `new_session(session)` is guaranteed to be called before `end_session(session-1)`. In other
/// words, a new session must always be planned before an ongoing one can be finished.
fn new_session(new_index: SessionIndex) -> Option<Vec<ValidatorId>>;
/// Same as `new_session`, but it this should only be called at genesis.
///
/// The session manager might decide to treat this in a different way. Default impl is simply
/// using [`new_session`].
fn new_session_genesis(new_index: SessionIndex) -> Option<Vec<ValidatorId>> {
Self::new_session(new_index)
}
/// End the session.
///
/// Because the session pallet can queue validator set the ending session can be lower than the
/// last new session index.
fn end_session(end_index: SessionIndex);
/// Start the session.
/// Start an already planned session.
///
/// The session start to be used for validation.
fn start_session(start_index: SessionIndex);
@@ -340,13 +347,9 @@ impl<AId> SessionHandler<AId> for Tuple {
pub struct TestSessionHandler;
impl<AId> SessionHandler<AId> for TestSessionHandler {
const KEY_TYPE_IDS: &'static [KeyTypeId] = &[sp_runtime::key_types::DUMMY];
fn on_genesis_session<Ks: OpaqueKeys>(_: &[(AId, Ks)]) {}
fn on_new_session<Ks: OpaqueKeys>(_: bool, _: &[(AId, Ks)], _: &[(AId, Ks)]) {}
fn on_before_session_ending() {}
fn on_disabled(_: usize) {}
}
@@ -451,7 +454,7 @@ decl_storage! {
}
}
let initial_validators_0 = T::SessionManager::new_session(0)
let initial_validators_0 = T::SessionManager::new_session_genesis(0)
.unwrap_or_else(|| {
frame_support::print("No initial validator provided by `SessionManager`, use \
session config keys to generate initial validator set.");
@@ -459,7 +462,7 @@ decl_storage! {
});
assert!(!initial_validators_0.is_empty(), "Empty validator set for session 0 in genesis block!");
let initial_validators_1 = T::SessionManager::new_session(1)
let initial_validators_1 = T::SessionManager::new_session_genesis(1)
.unwrap_or_else(|| initial_validators_0.clone());
assert!(!initial_validators_1.is_empty(), "Empty validator set for session 1 in genesis block!");
@@ -548,7 +551,7 @@ decl_module! {
/// Actual cost depends on the number of length of `T::Keys::key_ids()` which is fixed.
/// - DbReads: `T::ValidatorIdOf`, `NextKeys`, `origin account`
/// - DbWrites: `NextKeys`, `origin account`
/// - DbWrites per key id: `KeyOwnder`
/// - DbWrites per key id: `KeyOwner`
/// # </weight>
#[weight = T::WeightInfo::purge_keys()]
pub fn purge_keys(origin) {
@@ -573,17 +576,17 @@ decl_module! {
}
impl<T: Config> Module<T> {
/// Move on to next session. Register new validator set and session keys. Changes
/// to the validator set have a session of delay to take effect. This allows for
/// equivocation punishment after a fork.
/// Move on to next session. Register new validator set and session keys. Changes to the
/// validator set have a session of delay to take effect. This allows for equivocation
/// punishment after a fork.
pub fn rotate_session() {
let session_index = CurrentIndex::get();
log::trace!(target: "runtime::session", "rotating session {:?}", session_index);
let changed = QueuedChanged::get();
// Inform the session handlers that a session is going to end.
T::SessionHandler::on_before_session_ending();
T::SessionManager::end_session(session_index);
// Get queued session keys and validators.