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im-online: use EstimateNextSessionRotation to get better estimates of session progress (#8242)

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* frame-support: add method to estimate current session progress

* im-online: use EstimateNextSessionRotation trait to delay heartbeats

* node: fix im-online pallet instantiation

* frame-support: fix docs

* frame: fix tests

* pallet-session: last block of periodic session means 100% session progress

* pallet-session: add test for periodic session progress

* pallet-babe: fix epoch progress and add test

* frame-support: return weight with session estimates

* pallet-im-online: add test for session progress logic
This commit is contained in:
André Silva
2021-03-12 11:50:07 +00:00
committed by GitHub
parent a4e8875897
commit 5182209788
12 changed files with 403 additions and 142 deletions
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substrate/frame/staking/src/lib.rs
+6 -2
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@@ -1365,7 +1365,10 @@ decl_module! {
// either current session final based on the plan, or we're forcing.
(Self::is_current_session_final() || Self::will_era_be_forced())
{
if let Some(next_session_change) = T::NextNewSession::estimate_next_new_session(now) {
let (maybe_next_session_change, estimate_next_new_session_weight) =
T::NextNewSession::estimate_next_new_session(now);
if let Some(next_session_change) = maybe_next_session_change {
if let Some(remaining) = next_session_change.checked_sub(&now) {
if remaining <= T::ElectionLookahead::get() && !remaining.is_zero() {
// create snapshot.
@@ -1387,7 +1390,7 @@ decl_module! {
} else {
log!(warn, "Estimating next session change failed.");
}
add_weight(0, 0, T::NextNewSession::weight(now))
add_weight(0, 0, estimate_next_new_session_weight)
}
// For `era_election_status`, `is_current_session_final`, `will_era_be_forced`
add_weight(3, 0, 0);
@@ -3365,6 +3368,7 @@ impl<T: Config> sp_election_providers::ElectionDataProvider<T::AccountId, T::Blo
let session_length = T::NextNewSession::average_session_length();
let until_this_session_end = T::NextNewSession::estimate_next_new_session(now)
.0
.unwrap_or_default()
.saturating_sub(now);