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feat(rpc): port over sequencer forwarding
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,123 @@ | ||
| //! Optimism reth RPC Extension used to forward raw transactions to the sequencer. | ||
| use std::sync::{atomic::AtomicUsize, Arc}; | ||
|
|
||
| use jsonrpsee_types::error::{ErrorObject, INTERNAL_ERROR_CODE}; | ||
| use reqwest::Client; | ||
| use reth_rpc_eth_api::RawTransactionForwarder; | ||
| use reth_rpc_eth_types::error::{EthApiError, EthResult}; | ||
| use reth_rpc_types::ToRpcError; | ||
|
|
||
| /// Error type when interacting with the Sequencer | ||
| #[derive(Debug, thiserror::Error)] | ||
| pub enum SequencerRpcError { | ||
| /// Wrapper around an [`reqwest::Error`]. | ||
| #[error(transparent)] | ||
| HttpError(#[from] reqwest::Error), | ||
| /// Thrown when serializing transaction to forward to sequencer | ||
| #[error("invalid sequencer transaction")] | ||
| InvalidSequencerTransaction, | ||
| } | ||
|
|
||
| impl ToRpcError for SequencerRpcError { | ||
| fn to_rpc_error(&self) -> ErrorObject<'static> { | ||
| ErrorObject::owned(INTERNAL_ERROR_CODE, self.to_string(), None::<String>) | ||
| } | ||
| } | ||
|
|
||
| impl From<SequencerRpcError> for EthApiError { | ||
| fn from(err: SequencerRpcError) -> Self { | ||
| Self::other(err) | ||
| } | ||
| } | ||
|
|
||
| /// A client to interact with a Sequencer | ||
| #[derive(Debug, Clone)] | ||
| pub struct SequencerClient { | ||
| inner: Arc<SequencerClientInner>, | ||
| } | ||
|
|
||
| impl SequencerClient { | ||
| /// Creates a new [`SequencerClient`]. | ||
| pub fn new(sequencer_endpoint: impl Into<String>) -> Self { | ||
| let client = Client::builder().use_rustls_tls().build().unwrap(); | ||
| Self::with_client(sequencer_endpoint, client) | ||
| } | ||
|
|
||
| /// Creates a new [`SequencerClient`]. | ||
| pub fn with_client(sequencer_endpoint: impl Into<String>, http_client: Client) -> Self { | ||
| let inner = SequencerClientInner { | ||
| sequencer_endpoint: sequencer_endpoint.into(), | ||
| http_client, | ||
| id: AtomicUsize::new(0), | ||
| }; | ||
| Self { inner: Arc::new(inner) } | ||
| } | ||
|
|
||
| /// Returns the network of the client | ||
| pub fn endpoint(&self) -> &str { | ||
| &self.inner.sequencer_endpoint | ||
| } | ||
|
|
||
| /// Returns the client | ||
| pub fn http_client(&self) -> &Client { | ||
| &self.inner.http_client | ||
| } | ||
|
|
||
| /// Returns the next id for the request | ||
| fn next_request_id(&self) -> usize { | ||
| self.inner.id.fetch_add(1, std::sync::atomic::Ordering::SeqCst) | ||
| } | ||
|
|
||
| /// Forwards a transaction to the sequencer endpoint. | ||
| pub async fn forward_raw_transaction(&self, tx: &[u8]) -> Result<(), SequencerRpcError> { | ||
| let body = serde_json::to_string(&serde_json::json!({ | ||
| "jsonrpc": "2.0", | ||
| "method": "eth_sendRawTransaction", | ||
| "params": [format!("0x{}", alloy::primitives::hex::encode(tx))], | ||
| "id": self.next_request_id() | ||
| })) | ||
| .map_err(|_| { | ||
| tracing::warn!( | ||
| target = "rpc::eth", | ||
| "Failed to serialize transaction for forwarding to sequencer" | ||
| ); | ||
| SequencerRpcError::InvalidSequencerTransaction | ||
| })?; | ||
|
|
||
| self.http_client() | ||
| .post(self.endpoint()) | ||
| .header(reqwest::header::CONTENT_TYPE, "application/json") | ||
| .body(body) | ||
| .send() | ||
| .await | ||
| .inspect_err(|err| { | ||
| tracing::warn!( | ||
| target = "rpc::eth", | ||
| %err, | ||
| "Failed to forward transaction to sequencer", | ||
| ); | ||
| }) | ||
| .map_err(SequencerRpcError::HttpError)?; | ||
|
|
||
| Ok(()) | ||
| } | ||
| } | ||
|
|
||
| #[async_trait::async_trait] | ||
| impl RawTransactionForwarder for SequencerClient { | ||
| async fn forward_raw_transaction(&self, tx: &[u8]) -> EthResult<()> { | ||
| Self::forward_raw_transaction(self, tx).await?; | ||
| Ok(()) | ||
| } | ||
| } | ||
|
|
||
| #[derive(Debug, Default)] | ||
| struct SequencerClientInner { | ||
| /// The endpoint of the sequencer | ||
| sequencer_endpoint: String, | ||
| /// The HTTP client | ||
| http_client: Client, | ||
| /// Keeps track of unique request ids | ||
| id: AtomicUsize, | ||
| } |