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// Parity Bridges Common is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
// Parity Bridges Common is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
// You should have received a copy of the GNU General Public License
// along with Parity Bridges Common. If not, see <http://www.gnu.org/licenses/>.
//! Types used to connect to the Rococo-Substrate chain.
use codec::Encode;
use relay_substrate_client::{Chain, ChainBase, ChainWithBalances, TransactionSignScheme};
use sp_core::{storage::StorageKey, Pair};
use sp_runtime::{generic::SignedPayload, traits::IdentifyAccount};
use std::time::Duration;
/// Rococo header id.
pub type HeaderId = relay_utils::HeaderId<bp_rococo::Hash, bp_rococo::BlockNumber>;
/// Rococo chain definition
#[derive(Debug, Clone, Copy)]
pub struct Rococo;
impl ChainBase for Rococo {
type BlockNumber = bp_rococo::BlockNumber;
type Hash = bp_rococo::Hash;
type Hasher = bp_rococo::Hashing;
type Header = bp_rococo::Header;
}
impl Chain for Rococo {
const NAME: &'static str = "Rococo";
const AVERAGE_BLOCK_INTERVAL: Duration = Duration::from_secs(6);
type AccountId = bp_rococo::AccountId;
type Index = bp_rococo::Index;
type SignedBlock = bp_rococo::SignedBlock;
type Call = bp_rococo::Call;
}
impl ChainWithBalances for Rococo {
type NativeBalance = bp_rococo::Balance;
fn account_info_storage_key(account_id: &Self::AccountId) -> StorageKey {
StorageKey(bp_rococo::account_info_storage_key(account_id))
}
}
impl TransactionSignScheme for Rococo {
type Chain = Rococo;
type AccountKeyPair = sp_core::sr25519::Pair;
type SignedTransaction = bp_rococo::UncheckedExtrinsic;
fn sign_transaction(
genesis_hash: <Self::Chain as ChainBase>::Hash,
signer: &Self::AccountKeyPair,
signer_nonce: <Self::Chain as Chain>::Index,
call: <Self::Chain as Chain>::Call,
) -> Self::SignedTransaction {
let raw_payload = SignedPayload::new(
call,
bp_rococo::SignedExtensions::new(
bp_rococo::VERSION,
sp_runtime::generic::Era::Immortal,
genesis_hash,
signer_nonce,
0,
),
)
.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_rococo::UncheckedExtrinsic::new_signed(call, signer.into_account(), signature.into(), extra)
}
}
/// Rococo signing params.
#[derive(Clone)]
pub struct SigningParams {
/// Substrate transactions signer.
pub signer: sp_core::sr25519::Pair,
}
impl SigningParams {
/// Create signing params from SURI and password.
pub fn from_suri(suri: &str, password: Option<&str>) -> Result<Self, sp_core::crypto::SecretStringError> {
Ok(SigningParams {
signer: sp_core::sr25519::Pair::from_string(suri, password)?,
})
}
}
impl std::fmt::Debug for SigningParams {
fn fmt(&self, f: &mut std::fmt::Formatter) -> std::fmt::Result {
write!(f, "{}", self.signer.public())
}
}
impl Default for SigningParams {
fn default() -> Self {
SigningParams {
signer: sp_keyring::AccountKeyring::Alice.pair(),
}
}
}
/// Rococo header type used in headers sync.
pub type SyncHeader = relay_substrate_client::SyncHeader<bp_rococo::Header>;