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Polkadot <> Kusama relayers (#1122)

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* relay headers between Kusama and Polkadot

* relay messages between Kusama and Polkadot

* complex Kusama <> Polkadot relayer

* expose relayer_fund_account_id from messages pallet

* create relayers fund accounts on Kusama/Polkadot + some more fixes

* fmt

* fix compilation

* compilation + clippy

* compilation

* MAXIMAL_BALANCE_DECREASE_PER_DAY for K<>P header relays

* fmt

* deduplicate tests

* Update modules/messages/src/lib.rs

Co-authored-by: Tomasz Drwięga <tomusdrw@users.noreply.github.com>

* extract storage_parameter_key function

* other grumbles

* fix

* fmt

Co-authored-by: Tomasz Drwięga <tomusdrw@users.noreply.github.com>
This commit is contained in:
Svyatoslav Nikolsky
2021-09-21 16:53:37 +03:00
committed by Bastian Köcher
parent 417903f9e7
commit 2db84b74cc
31 changed files with 1936 additions and 68 deletions
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bridges/relays/client-polkadot/src/lib.rs
+68 -2
View File
@@ -16,9 +16,16 @@
//! Types used to connect to the Polkadot chain.
use relay_substrate_client::{Chain, ChainBase};
use codec::Encode;
use relay_substrate_client::{
Chain, ChainBase, ChainWithBalances, TransactionEraOf, TransactionSignScheme, UnsignedTransaction,
};
use sp_core::{storage::StorageKey, Pair};
use sp_runtime::{generic::SignedPayload, traits::IdentifyAccount};
use std::time::Duration;
pub mod runtime;
/// Polkadot header id.
pub type HeaderId = relay_utils::HeaderId<bp_polkadot::Hash, bp_polkadot::BlockNumber>;
@@ -45,9 +52,68 @@ impl Chain for Polkadot {
const MAXIMAL_ENCODED_ACCOUNT_ID_SIZE: u32 = bp_polkadot::MAXIMAL_ENCODED_ACCOUNT_ID_SIZE;
type SignedBlock = bp_polkadot::SignedBlock;
type Call = ();
type Call = crate::runtime::Call;
type WeightToFee = bp_polkadot::WeightToFee;
}
impl ChainWithBalances for Polkadot {
fn account_info_storage_key(account_id: &Self::AccountId) -> StorageKey {
StorageKey(bp_polkadot::account_info_storage_key(account_id))
}
}
impl TransactionSignScheme for Polkadot {
type Chain = Polkadot;
type AccountKeyPair = sp_core::sr25519::Pair;
type SignedTransaction = crate::runtime::UncheckedExtrinsic;
fn sign_transaction(
genesis_hash: <Self::Chain as ChainBase>::Hash,
signer: &Self::AccountKeyPair,
era: TransactionEraOf<Self::Chain>,
unsigned: UnsignedTransaction<Self::Chain>,
) -> Self::SignedTransaction {
let raw_payload = SignedPayload::new(
unsigned.call,
bp_polkadot::SignedExtensions::new(bp_polkadot::VERSION, era, genesis_hash, unsigned.nonce, unsigned.tip),
)
.expect("SignedExtension never fails.");
let signature = raw_payload.using_encoded(|payload| signer.sign(payload));
let signer: sp_runtime::MultiSigner = signer.public().into();
let (call, extra, _) = raw_payload.deconstruct();
bp_polkadot::UncheckedExtrinsic::new_signed(
call,
sp_runtime::MultiAddress::Id(signer.into_account()),
signature.into(),
extra,
)
}
fn is_signed(tx: &Self::SignedTransaction) -> bool {
tx.signature.is_some()
}
fn is_signed_by(signer: &Self::AccountKeyPair, tx: &Self::SignedTransaction) -> bool {
tx.signature
.as_ref()
.map(|(address, _, _)| *address == bp_polkadot::AccountId::from(*signer.public().as_array_ref()).into())
.unwrap_or(false)
}
fn parse_transaction(tx: Self::SignedTransaction) -> Option<UnsignedTransaction<Self::Chain>> {
let extra = &tx.signature.as_ref()?.2;
Some(UnsignedTransaction {
call: tx.function,
nonce: extra.nonce(),
tip: extra.tip(),
})
}
}
/// Polkadot header type used in headers sync.
pub type SyncHeader = relay_substrate_client::SyncHeader<bp_polkadot::Header>;
/// Polkadot signing params.
pub type SigningParams = sp_core::sr25519::Pair;