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Runtime API for historical validation code (#1893)

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* fix: ensure candidate validation gets code based on occupied core assumption

* guide: runtime API for historical validation code

* add historical runtime API

* integrate into runtime API subsystem

* remove blocked TODO

* fix service build: enable notifications protocol only under real overseer

* Update node/subsystem/src/messages.rs

Co-authored-by: Sergei Shulepov <sergei@parity.io>

* fix compilation

Co-authored-by: Robert Habermeier <robert@Roberts-MacBook-Pro.local>
Co-authored-by: Sergei Shulepov <sergei@parity.io>
This commit is contained in:
Robert Habermeier
2020-11-02 12:19:53 -06:00
committed by GitHub
parent a3e58350bb
commit 1f4121c444
13 changed files with 152 additions and 7 deletions
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polkadot/primitives/src/v1.rs
+9 -1
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@@ -657,7 +657,7 @@ pub enum CandidateEvent<H = Hash> {
sp_api::decl_runtime_apis! {
/// The API for querying the state of parachains on-chain.
pub trait ParachainHost<H: Decode = Hash, N: Decode = BlockNumber> {
pub trait ParachainHost<H: Decode = Hash, N: Encode + Decode = BlockNumber> {
/// Get the current validators.
fn validators() -> Vec<ValidatorId>;
@@ -701,6 +701,14 @@ sp_api::decl_runtime_apis! {
fn validation_code(para_id: Id, assumption: OccupiedCoreAssumption)
-> Option<ValidationCode>;
/// Fetch the historical validation code used by a para for candidates executed in the
/// context of a given block height in the current chain.
///
/// `context_height` may be no greater than the height of the block in whose
/// state the runtime API is executed.
fn historical_validation_code(para_id: Id, context_height: N)
-> Option<ValidationCode>;
/// Get the receipt of a candidate pending availability. This returns `Some` for any paras
/// assigned to occupied cores in `availability_cores` and `None` otherwise.
fn candidate_pending_availability(para_id: Id) -> Option<CommittedCandidateReceipt<H>>;