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Sync ethereum headers using unsigned (substrate) transactions (#45)

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* reward submitters on finalization

* PoA -> Substrate: unsigned_import_header API

* fix grumble

* make submitter part of ImportContext

* verify using next validators set + tests

* fix nostd compilation

* add sub-tx-mode argument

* support sub-tx-mode

* impl ValidateUnsigned for Runtime

* do not submit too much transactions to the pool

* cargo fmt

* fix bad merge

* revert license fix

* Update modules/ethereum/src/lib.rs

Co-Authored-By: Hernando Castano <HCastano@users.noreply.github.com>

* Update modules/ethereum/src/verification.rs

Co-Authored-By: Hernando Castano <HCastano@users.noreply.github.com>

* updated comment

* validate receipts before accepting unsigned tx to pool

* cargo fmt

* fix comment

* fix grumbles

* Update modules/ethereum/src/verification.rs

Co-Authored-By: Hernando Castano <HCastano@users.noreply.github.com>

* cargo fmt --all

* struct ChangeToEnact

* updated doc

* fix doc

* add docs to the code method

* simplify fn ancestry

* finish incomplete docs

* Update modules/ethereum/src/lib.rs

Co-Authored-By: Tomasz Drwięga <tomusdrw@users.noreply.github.com>

* Update modules/ethereum/src/lib.rs

Co-Authored-By: Tomasz Drwięga <tomusdrw@users.noreply.github.com>

* return err from unsigned_import_header

* get header once

* Update relays/ethereum/src/ethereum_sync.rs

Co-Authored-By: Tomasz Drwięga <tomusdrw@users.noreply.github.com>

* fix

* UnsignedTooFarInTheFuture -> Custom(err.code())

* updated ImportContext::last_signal_block

* cargo fmt --all

* rename runtime calls

Co-authored-by: Hernando Castano <HCastano@users.noreply.github.com>
Co-authored-by: Tomasz Drwięga <tomusdrw@users.noreply.github.com>
This commit is contained in:
Svyatoslav Nikolsky
2020-04-07 15:53:59 +03:00
committed by Bastian Köcher
parent b055027161
commit c6c46462ab
12 changed files with 1043 additions and 211 deletions
Download Patch File Download Diff File Expand all files Collapse all files
bridges/relays/ethereum/src/substrate_client.rs
+76 -17
View File
@@ -132,7 +132,19 @@ pub async fn ethereum_header_known(
pub async fn submit_ethereum_headers(
client: Client,
headers: Vec<QueuedEthereumHeader>,
) -> (Client, Result<(TransactionHash, Vec<EthereumHeaderId>), Error>) {
sign_transactions: bool,
) -> (Client, Result<(Vec<TransactionHash>, Vec<EthereumHeaderId>), Error>) {
match sign_transactions {
true => submit_signed_ethereum_headers(client, headers).await,
false => submit_unsigned_ethereum_headers(client, headers).await,
}
}
/// Submits signed Ethereum header to Substrate runtime.
pub async fn submit_signed_ethereum_headers(
client: Client,
headers: Vec<QueuedEthereumHeader>,
) -> (Client, Result<(Vec<TransactionHash>, Vec<EthereumHeaderId>), Error>) {
let ids = headers.iter().map(|header| header.id()).collect();
let (client, genesis_hash) = match client.genesis_hash {
Some(genesis_hash) => (client, genesis_hash),
@@ -152,7 +164,9 @@ pub async fn submit_ethereum_headers(
Ok(nonce) => nonce,
Err(err) => return (client, Err(err)),
};
let transaction = create_submit_transaction(headers, &client.signer, nonce, genesis_hash);
let transaction = create_signed_submit_transaction(headers, &client.signer, nonce, genesis_hash);
let encoded_transaction = transaction.encode();
let (client, transaction_hash) = call_rpc(
client,
@@ -160,7 +174,39 @@ pub async fn submit_ethereum_headers(
Params::Array(vec![to_value(Bytes(encoded_transaction)).unwrap()]),
)
.await;
(client, transaction_hash.map(|transaction_hash| (transaction_hash, ids)))
(
client,
transaction_hash.map(|transaction_hash| (vec![transaction_hash], ids)),
)
}
/// Submits unsigned Ethereum header to Substrate runtime.
pub async fn submit_unsigned_ethereum_headers(
mut client: Client,
headers: Vec<QueuedEthereumHeader>,
) -> (Client, Result<(Vec<TransactionHash>, Vec<EthereumHeaderId>), Error>) {
let ids = headers.iter().map(|header| header.id()).collect();
let mut transactions_hashes = Vec::new();
for header in headers {
let transaction = create_unsigned_submit_transaction(header);
let encoded_transaction = transaction.encode();
let (used_client, transaction_hash) = call_rpc(
client,
"author_submitExtrinsic",
Params::Array(vec![to_value(Bytes(encoded_transaction)).unwrap()]),
)
.await;
client = used_client;
transactions_hashes.push(match transaction_hash {
Ok(transaction_hash) => transaction_hash,
Err(error) => return (client, Err(error)),
});
}
(client, Ok((transactions_hashes, ids)))
}
/// Get Substrate block hash by its number.
@@ -236,25 +282,26 @@ async fn call_rpc_u64(mut client: Client, method: &'static str, params: Params)
(client, result)
}
/// Create Substrate transaction for submitting Ethereum header.
fn create_submit_transaction(
/// Create signed Substrate transaction for submitting Ethereum headers.
fn create_signed_submit_transaction(
headers: Vec<QueuedEthereumHeader>,
signer: &sp_core::sr25519::Pair,
index: node_primitives::Index,
genesis_hash: H256,
) -> bridge_node_runtime::UncheckedExtrinsic {
let function = bridge_node_runtime::Call::BridgeEthPoA(bridge_node_runtime::BridgeEthPoACall::import_headers(
headers
.into_iter()
.map(|header| {
let (header, receipts) = header.extract();
(
into_substrate_ethereum_header(&header),
into_substrate_ethereum_receipts(&receipts),
)
})
.collect(),
));
let function =
bridge_node_runtime::Call::BridgeEthPoA(bridge_node_runtime::BridgeEthPoACall::import_signed_headers(
headers
.into_iter()
.map(|header| {
let (header, receipts) = header.extract();
(
into_substrate_ethereum_header(&header),
into_substrate_ethereum_receipts(&receipts),
)
})
.collect(),
));
let extra = |i: node_primitives::Index, f: node_primitives::Balance| {
(
@@ -284,3 +331,15 @@ fn create_submit_transaction(
bridge_node_runtime::UncheckedExtrinsic::new_signed(function, signer.into_account().into(), signature.into(), extra)
}
/// Create unsigned Substrate transaction for submitting Ethereum header.
fn create_unsigned_submit_transaction(header: QueuedEthereumHeader) -> bridge_node_runtime::UncheckedExtrinsic {
let (header, receipts) = header.extract();
let function =
bridge_node_runtime::Call::BridgeEthPoA(bridge_node_runtime::BridgeEthPoACall::import_unsigned_header(
into_substrate_ethereum_header(&header),
into_substrate_ethereum_receipts(&receipts),
));
bridge_node_runtime::UncheckedExtrinsic::new_unsigned(function)
}