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Merge pull request #88 from NethermindEth/mu/prep-mev-boost
Prepare transaction list to force push to MEV Boost
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,48 @@ | ||
| use serde::{Deserialize, Serialize}; | ||
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| #[derive(Serialize, Deserialize, Clone)] | ||
| pub struct Constraint { | ||
| tx: String, | ||
| index: Option<u64>, | ||
| } | ||
|
|
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| impl Constraint { | ||
| pub fn new(tx: String, index: Option<u64>) -> Self { | ||
| Self { tx, index } | ||
| } | ||
| } | ||
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| #[derive(Serialize, Deserialize, Clone)] | ||
| pub struct ConstraintsMessage { | ||
| validator_index: u64, | ||
| slot: u64, | ||
| constraints: Vec<Constraint>, | ||
| } | ||
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| impl ConstraintsMessage { | ||
| pub fn new(validator_index: u64, slot: u64, constraints: Vec<Constraint>) -> Self { | ||
| Self { | ||
| validator_index, | ||
| slot, | ||
| constraints, | ||
| } | ||
| } | ||
| } | ||
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| #[derive(Serialize, Deserialize, Clone)] | ||
| pub struct SignedConstraints { | ||
| message: ConstraintsMessage, | ||
| signature: String, | ||
| } | ||
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| impl SignedConstraints { | ||
| pub fn new(message: ConstraintsMessage, signature: String) -> Self { | ||
| Self { message, signature } | ||
| } | ||
| } | ||
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| impl From<ConstraintsMessage> for Vec<u8> { | ||
| fn from(val: ConstraintsMessage) -> Self { | ||
| bincode::serialize(&val).expect("MEV Boost message serialization failed") | ||
| } | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,20 +1,57 @@ | ||
| #![allow(unused)] //TODO remove after the EthereumL1 is used in release code | ||
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| use crate::ethereum_l1::EthereumL1; | ||
| use crate::utils::rpc_client::RpcClient; | ||
| use anyhow::Error; | ||
| use std::sync::Arc; | ||
|
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| pub mod constraints; | ||
| use constraints::{Constraint, ConstraintsMessage, SignedConstraints}; | ||
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| pub struct MevBoost { | ||
| _rpc_client: RpcClient, | ||
| rpc_client: RpcClient, | ||
| validator_index: u64, | ||
| } | ||
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| impl MevBoost { | ||
| pub fn new(rpc_url: &str) -> Self { | ||
| pub fn new(rpc_url: &str, validator_index: u64) -> Self { | ||
| let rpc_client = RpcClient::new(rpc_url); | ||
| Self { | ||
| _rpc_client: rpc_client, | ||
| rpc_client, | ||
| validator_index, | ||
| } | ||
| } | ||
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| pub fn send_transaction(&self, _tx: &[u8], _validator_index: u64, _slot: u64) { | ||
| //TODO: implement | ||
| pub async fn force_inclusion( | ||
| &self, | ||
| constraints: Vec<Constraint>, | ||
| ethereum_l1: Arc<EthereumL1>, | ||
| ) -> Result<(), Error> { | ||
| // Prepare the message | ||
| // TODO check slot id value | ||
| let slot_id = ethereum_l1.slot_clock.get_current_slot()?; | ||
|
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| let message = ConstraintsMessage::new(self.validator_index, slot_id, constraints); | ||
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| let data_to_sign: Vec<u8> = message.clone().into(); | ||
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| // Sign the message | ||
| // TODO: Determine if the transaction data needs to be signed as a JSON string. | ||
| let signature = ethereum_l1 | ||
| .execution_layer | ||
| .sign_message_with_private_ecdsa_key(&data_to_sign)?; | ||
|
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| // Prepare data to send | ||
| let signed_constraints = | ||
| SignedConstraints::new(message, format!("0x{}", hex::encode(signature))); | ||
| let json_data = serde_json::to_value(&signed_constraints).unwrap(); | ||
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| // https://chainbound.github.io/bolt-docs/api/builder#ethv1builderconstraints | ||
| let method = "/eth/v1/builder/constraints"; | ||
| // Make rpc request | ||
| self.rpc_client | ||
| .call_method(method, vec![json_data]) | ||
| .await | ||
| .unwrap(); | ||
|
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| Ok(()) | ||
| } | ||
| } |
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