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Fix ClaimQueue case of nothing scheduled on session boundary #4065

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merged 3 commits into from
Apr 11, 2024
Merged

Fix ClaimQueue case of nothing scheduled on session boundary #4065

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cec2235
fix fix fix
sandreim Apr 10, 2024
4ae829f
Merge branch 'master' of github.com:paritytech/polkadot-sdk into sand…
sandreim Apr 10, 2024
a073259
Merge branch 'master' into sandreim/fix_claim_queue_api
sandreim Apr 11, 2024
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14 changes: 13 additions & 1 deletion polkadot/runtime/parachains/src/runtime_api_impl/vstaging.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -18,10 +18,22 @@

use crate::scheduler;
use primitives::{CoreIndex, Id as ParaId};
use sp_std::collections::{btree_map::BTreeMap, vec_deque::VecDeque};
use sp_runtime::traits::One;
use sp_std::{
collections::{btree_map::BTreeMap, vec_deque::VecDeque},
vec::Vec,
};

/// Returns the claimqueue from the scheduler
pub fn claim_queue<T: scheduler::Config>() -> BTreeMap<CoreIndex, VecDeque<ParaId>> {
let now = <frame_system::Pallet<T>>::block_number() + One::one();

// This explicit update is only strictly required for session boundaries:
//
// At the end of a session we clear the claim queues: Without this update call, nothing would be
// scheduled to the client.
<scheduler::Pallet<T>>::free_cores_and_fill_claimqueue(Vec::new(), now);

scheduler::ClaimQueue::<T>::get()
.into_iter()
.map(|(core_index, entries)| {
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