mirror of
https://github.com/pezkuwichain/pezkuwi-subxt.git
synced 2026-05-30 15:11:02 +00:00
Svyatoslav Nikolsky
e675b13042
* refactor finality relay helper definitions * add missing doc * removed commented code * fmt * disable rustfmt for macro * move best_finalized method const to relay chain def
127 lines
4.1 KiB
Rust
127 lines
4.1 KiB
Rust
// Copyright 2019-2021 Parity Technologies (UK) Ltd.
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// This file is part of Parity Bridges Common.
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// Parity Bridges Common is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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// Parity Bridges Common is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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// You should have received a copy of the GNU General Public License
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// along with Parity Bridges Common. If not, see <http://www.gnu.org/licenses/>.
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//! Types used to connect to the Polkadot chain.
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use codec::Encode;
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use relay_substrate_client::{
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Chain, ChainBase, ChainWithBalances, TransactionEraOf, TransactionSignScheme,
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UnsignedTransaction,
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};
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use sp_core::{storage::StorageKey, Pair};
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use sp_runtime::{generic::SignedPayload, traits::IdentifyAccount};
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use std::time::Duration;
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pub mod runtime;
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/// Polkadot header id.
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pub type HeaderId = relay_utils::HeaderId<bp_polkadot::Hash, bp_polkadot::BlockNumber>;
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/// Polkadot chain definition
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#[derive(Debug, Clone, Copy)]
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pub struct Polkadot;
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impl ChainBase for Polkadot {
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type BlockNumber = bp_polkadot::BlockNumber;
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type Hash = bp_polkadot::Hash;
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type Hasher = bp_polkadot::Hasher;
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type Header = bp_polkadot::Header;
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type AccountId = bp_polkadot::AccountId;
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type Balance = bp_polkadot::Balance;
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type Index = bp_polkadot::Nonce;
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type Signature = bp_polkadot::Signature;
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}
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impl Chain for Polkadot {
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const NAME: &'static str = "Polkadot";
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const BEST_FINALIZED_HEADER_ID_METHOD: &'static str =
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bp_polkadot::BEST_FINALIZED_POLKADOT_HEADER_METHOD;
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const AVERAGE_BLOCK_INTERVAL: Duration = Duration::from_secs(6);
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const STORAGE_PROOF_OVERHEAD: u32 = bp_polkadot::EXTRA_STORAGE_PROOF_SIZE;
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const MAXIMAL_ENCODED_ACCOUNT_ID_SIZE: u32 = bp_polkadot::MAXIMAL_ENCODED_ACCOUNT_ID_SIZE;
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type SignedBlock = bp_polkadot::SignedBlock;
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type Call = crate::runtime::Call;
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type WeightToFee = bp_polkadot::WeightToFee;
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}
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impl ChainWithBalances for Polkadot {
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fn account_info_storage_key(account_id: &Self::AccountId) -> StorageKey {
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StorageKey(bp_polkadot::account_info_storage_key(account_id))
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}
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}
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impl TransactionSignScheme for Polkadot {
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type Chain = Polkadot;
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type AccountKeyPair = sp_core::sr25519::Pair;
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type SignedTransaction = crate::runtime::UncheckedExtrinsic;
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fn sign_transaction(
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genesis_hash: <Self::Chain as ChainBase>::Hash,
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signer: &Self::AccountKeyPair,
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era: TransactionEraOf<Self::Chain>,
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unsigned: UnsignedTransaction<Self::Chain>,
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) -> Self::SignedTransaction {
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let raw_payload = SignedPayload::new(
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unsigned.call,
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bp_polkadot::SignedExtensions::new(
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bp_polkadot::VERSION,
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era,
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genesis_hash,
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unsigned.nonce,
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unsigned.tip,
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),
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)
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.expect("SignedExtension never fails.");
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let signature = raw_payload.using_encoded(|payload| signer.sign(payload));
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let signer: sp_runtime::MultiSigner = signer.public().into();
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let (call, extra, _) = raw_payload.deconstruct();
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bp_polkadot::UncheckedExtrinsic::new_signed(
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call,
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sp_runtime::MultiAddress::Id(signer.into_account()),
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signature.into(),
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extra,
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)
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}
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fn is_signed(tx: &Self::SignedTransaction) -> bool {
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tx.signature.is_some()
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}
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fn is_signed_by(signer: &Self::AccountKeyPair, tx: &Self::SignedTransaction) -> bool {
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tx.signature
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.as_ref()
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.map(|(address, _, _)| {
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*address == bp_polkadot::AccountId::from(*signer.public().as_array_ref()).into()
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})
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.unwrap_or(false)
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}
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fn parse_transaction(tx: Self::SignedTransaction) -> Option<UnsignedTransaction<Self::Chain>> {
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let extra = &tx.signature.as_ref()?.2;
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Some(UnsignedTransaction { call: tx.function, nonce: extra.nonce(), tip: extra.tip() })
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}
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}
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/// Polkadot header type used in headers sync.
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pub type SyncHeader = relay_substrate_client::SyncHeader<bp_polkadot::Header>;
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/// Polkadot signing params.
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pub type SigningParams = sp_core::sr25519::Pair;
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