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on-demand headers relay (#833)

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* on-demand headers relay

* bool::then

* move file

* atomic submit_signed_extrinsic

* remove cli options from future

* test on-demand relay

* TODOs

* fixed initialization call for Westend -> Millau

* Update relays/client-substrate/src/client.rs

Co-authored-by: Hernando Castano <HCastano@users.noreply.github.com>

* removed on_demand_headers_relay.rs

* on_demand_headers_relay traces

* fix compilation

* fmt

* docs

Co-authored-by: Hernando Castano <HCastano@users.noreply.github.com>
This commit is contained in:
Svyatoslav Nikolsky
2021-03-26 08:49:59 +03:00
committed by Bastian Köcher
parent 51fc83941b
commit 4e4e9a8e4e
18 changed files with 367 additions and 223 deletions
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bridges/relays/bin-substrate/src/finality_pipeline.rs
+11 -8
View File
@@ -18,14 +18,13 @@
use crate::finality_target::SubstrateFinalityTarget;
use async_trait::async_trait;
use codec::Encode;
use finality_relay::{FinalitySyncParams, FinalitySyncPipeline};
use relay_substrate_client::{
finality_source::{FinalitySource, Justification},
BlockNumberOf, Chain, Client, Error as SubstrateError, HashOf, SyncHeader,
BlockNumberOf, Chain, Client, HashOf, SyncHeader,
};
use relay_utils::BlockNumberBase;
use sp_core::Bytes;
use std::{fmt::Debug, marker::PhantomData, time::Duration};
/// Default synchronization loop timeout.
@@ -37,20 +36,23 @@ const STALL_TIMEOUT: Duration = Duration::from_secs(120);
const RECENT_FINALITY_PROOFS_LIMIT: usize = 4096;
/// Headers sync pipeline for Substrate <-> Substrate relays.
#[async_trait]
pub trait SubstrateFinalitySyncPipeline: FinalitySyncPipeline {
/// Name of the runtime method that returns id of best finalized source header at target chain.
const BEST_FINALIZED_SOURCE_HEADER_ID_AT_TARGET: &'static str;
/// Signed transaction type.
type SignedTransaction: Send + Sync + Encode;
/// Chain with GRANDPA bridge pallet.
type TargetChain: Chain;
/// Returns id of account that we're using to sign transactions at target chain.
fn transactions_author(&self) -> <Self::TargetChain as Chain>::AccountId;
/// Make submit header transaction.
async fn make_submit_finality_proof_transaction(
fn make_submit_finality_proof_transaction(
&self,
transaction_nonce: <Self::TargetChain as Chain>::Index,
header: Self::Header,
proof: Self::FinalityProof,
) -> Result<Self::SignedTransaction, SubstrateError>;
) -> Bytes;
}
/// Substrate-to-Substrate finality proof pipeline.
@@ -105,6 +107,7 @@ where
Number = BlockNumberOf<SourceChain>,
Header = SyncHeader<SourceChain::Header>,
FinalityProof = Justification<SourceChain::BlockNumber>,
TargetChain = TargetChain,
>,
SourceChain: Clone + Chain,
BlockNumberOf<SourceChain>: BlockNumberBase,