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Merge pull request #151 from ralexstokes/poly2
uses polymorphic types
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,105 @@ | ||
| use async_trait::async_trait; | ||
| use ethereum_consensus::{ | ||
| bellatrix::mainnet as bellatrix, | ||
| builder::{SignedValidatorRegistration, ValidatorRegistration}, | ||
| capella::mainnet as capella, | ||
| crypto::SecretKey, | ||
| primitives::{BlsPublicKey, Slot, U256}, | ||
| state_transition::Context, | ||
| }; | ||
| use mev_rs::{ | ||
| blinded_block_provider::BlindedBlockProvider, | ||
| signing::sign_builder_message, | ||
| types::{ | ||
| BidRequest, BuilderBid, ExecutionPayload, ExecutionPayloadHeader, SignedBlindedBeaconBlock, | ||
| SignedBuilderBid, | ||
| }, | ||
| Error, | ||
| }; | ||
| use std::{ | ||
| collections::HashMap, | ||
| sync::{Arc, Mutex}, | ||
| }; | ||
|
|
||
| #[derive(Default, Clone)] | ||
| pub struct IdentityBuilder { | ||
| signing_key: SecretKey, | ||
| public_key: BlsPublicKey, | ||
| context: Arc<Context>, | ||
| bids: Arc<Mutex<HashMap<Slot, ExecutionPayload>>>, | ||
| registrations: Arc<Mutex<HashMap<BlsPublicKey, ValidatorRegistration>>>, | ||
| } | ||
|
|
||
| impl IdentityBuilder { | ||
| pub fn new(context: Context) -> Self { | ||
| let signing_key = SecretKey::try_from([1u8; 32].as_ref()).unwrap(); | ||
| let public_key = signing_key.public_key(); | ||
| Self { signing_key, public_key, context: Arc::new(context), ..Default::default() } | ||
| } | ||
| } | ||
|
|
||
| #[async_trait] | ||
| impl BlindedBlockProvider for IdentityBuilder { | ||
| async fn register_validators( | ||
| &self, | ||
| registrations: &mut [SignedValidatorRegistration], | ||
| ) -> Result<(), Error> { | ||
| let mut state = self.registrations.lock().unwrap(); | ||
| for registration in registrations { | ||
| let registration = ®istration.message; | ||
| let public_key = registration.public_key.clone(); | ||
| state.insert(public_key, registration.clone()); | ||
| } | ||
| Ok(()) | ||
| } | ||
|
|
||
| async fn fetch_best_bid( | ||
| &self, | ||
| BidRequest { slot, parent_hash, public_key }: &BidRequest, | ||
| ) -> Result<SignedBuilderBid, Error> { | ||
| let capella_fork_slot = self.context.capella_fork_epoch * self.context.slots_per_epoch; | ||
| let state = self.registrations.lock().unwrap(); | ||
| let preferences = state.get(public_key).unwrap(); | ||
| let value = U256::from(1337); | ||
| let (payload, header) = if *slot < capella_fork_slot { | ||
| let mut payload = bellatrix::ExecutionPayload { | ||
| parent_hash: parent_hash.clone(), | ||
| fee_recipient: preferences.fee_recipient.clone(), | ||
| gas_limit: preferences.gas_limit, | ||
| ..Default::default() | ||
| }; | ||
| let header = ExecutionPayloadHeader::Bellatrix( | ||
| bellatrix::ExecutionPayloadHeader::try_from(&mut payload).unwrap(), | ||
| ); | ||
| (ExecutionPayload::Bellatrix(payload), header) | ||
| } else { | ||
| let mut payload = capella::ExecutionPayload { | ||
| parent_hash: parent_hash.clone(), | ||
| fee_recipient: preferences.fee_recipient.clone(), | ||
| gas_limit: preferences.gas_limit, | ||
| ..Default::default() | ||
| }; | ||
| let header = ExecutionPayloadHeader::Capella( | ||
| capella::ExecutionPayloadHeader::try_from(&mut payload).unwrap(), | ||
| ); | ||
| (ExecutionPayload::Capella(payload), header) | ||
| }; | ||
|
|
||
| let mut builder_bid = BuilderBid { header, value, public_key: self.public_key.clone() }; | ||
| let signature = | ||
| sign_builder_message(&mut builder_bid, &self.signing_key, &self.context).unwrap(); | ||
| let signed_builder_bid = SignedBuilderBid { message: builder_bid, signature }; | ||
| let mut state = self.bids.lock().unwrap(); | ||
| state.insert(*slot, payload); | ||
| Ok(signed_builder_bid) | ||
| } | ||
|
|
||
| async fn open_bid( | ||
| &self, | ||
| signed_block: &mut SignedBlindedBeaconBlock, | ||
| ) -> Result<ExecutionPayload, Error> { | ||
| let slot = *signed_block.message().slot(); | ||
| let state = self.bids.lock().unwrap(); | ||
| Ok(state.get(&slot).cloned().unwrap()) | ||
| } | ||
| } |
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