beacon: consensus: implement engine api getBlobs

beacon_node/execution_layer/src/engine_api.rs

@@ -7,9 +7,10 @@ use serde::{Deserialize, Serialize};
 use strum::IntoStaticStr;
 pub use types::{
     Address, EthSpec, ExecutionBlockHash, ExecutionPayload, ExecutionPayloadHeader, FixedVector,
-    Hash256, Uint256, VariableList,
+    Hash256, Uint256, VariableList, kzg_proof::KzgProof, kzg_commitment::KzgCommitment, blob::Blob,
 };
 
+
 pub mod auth;
 pub mod http;
 pub mod json_structures;

beacon_node/execution_layer/src/engine_api/http.rs

@@ -3,13 +3,14 @@
 use super::*;
 use crate::auth::Auth;
 use crate::json_structures::*;
+use eth2::lighthouse::Eth1Block;
 use reqwest::header::CONTENT_TYPE;
 use sensitive_url::SensitiveUrl;
 use serde::de::DeserializeOwned;
 use serde_json::json;
 
 use std::time::Duration;
-use types::EthSpec;
+use types::{EthSpec, FullPayload, execution_payload::BlobsBundle};
 
 pub use deposit_log::{DepositLog, Log};
 pub use reqwest::Client;
@@ -34,6 +35,9 @@ pub const ENGINE_NEW_PAYLOAD_TIMEOUT: Duration = Duration::from_secs(8);
 pub const ENGINE_GET_PAYLOAD_V1: &str = "engine_getPayloadV1";
 pub const ENGINE_GET_PAYLOAD_TIMEOUT: Duration = Duration::from_secs(2);
 
+pub const ENGINE_GET_BLOBS_BUNDLE_V1: &str = "engine_getBlobsBundleV1";
+pub const ENGINE_GET_BLOBS_BUNDLE_TIMEOUT: Duration = Duration::from_secs(2);
+
 pub const ENGINE_FORKCHOICE_UPDATED_V1: &str = "engine_forkchoiceUpdatedV1";
 pub const ENGINE_FORKCHOICE_UPDATED_TIMEOUT: Duration = Duration::from_secs(8);
 
@@ -664,6 +668,32 @@ impl HttpJsonRpc {
         Ok(response.into())
     }
 
+    pub async fn get_blobs_bundle_v1<T: EthSpec>(
+        &self,
+        payload_id: PayloadId,
+    ) -> Result<BlobsBundle<T>, Error> {
+        let params = json!([JsonPayloadIdRequest::from(payload_id)]);
+
+        let response: JsonBlobBundlesV1<T> = self
+            .rpc_request(ENGINE_GET_BLOBS_BUNDLE_V1, params, ENGINE_GET_BLOBS_BUNDLE_TIMEOUT)
+            .await?;
+
+        Ok(response.into())
+    }
+
+    pub async fn get_full_payload<T: EthSpec>(
+        &self,
+        payload_id: PayloadId,
+    ) -> Result<FullPayload<T>, Error> {
+        let payload = self.get_payload_v1(payload_id).await;
+        let blobs = self.get_blobs_bundle_v1(payload_id).await;
+
+        Ok(FullPayload{
+            execution_payload: payload?,
+            blobs_bundle: blobs?.into(),
+        })
+    }
+
     pub async fn forkchoice_updated_v1(
         &self,
         forkchoice_state: ForkChoiceState,

beacon_node/execution_layer/src/engine_api/json_structures.rs

@@ -1,6 +1,6 @@
 use super::*;
 use serde::{Deserialize, Serialize};
-use types::{EthSpec, ExecutionBlockHash, FixedVector, Transaction, Unsigned, VariableList};
+use types::{EthSpec, ExecutionBlockHash, FixedVector, Transaction, Unsigned, VariableList, execution_payload::BlobsBundle};
 
 #[derive(Debug, PartialEq, Serialize, Deserialize)]
 #[serde(rename_all = "camelCase")]
@@ -269,6 +269,54 @@ impl From<JsonPayloadAttributesV1> for PayloadAttributes {
     }
 }
 
+#[derive(Debug, PartialEq, Serialize, Deserialize)]
+#[serde(bound = "T: EthSpec", rename_all = "camelCase")]
+pub struct JsonBlobBundlesV1<T: EthSpec> {
+    pub block_hash: Hash256,
+    pub kzgs: Vec<KzgCommitment>,
+    pub blobs: Vec<Blob<T>>,
+    pub aggregated_proof: KzgProof,
+}
+
+impl <T: EthSpec> From<BlobsBundle<T>> for JsonBlobBundlesV1<T> {
+    fn from(p: BlobsBundle<T>) -> Self {
+        // Use this verbose deconstruction pattern to ensure no field is left unused.
+        let BlobsBundle {
+            block_hash,
+            aggregated_proof,
+            blobs,
+            kzgs,
+        } = p;
+
+        Self {
+            block_hash,
+            aggregated_proof,
+            blobs,
+            kzgs,
+        }
+    }
+}
+
+impl <T: EthSpec> From<JsonBlobBundlesV1<T>> for BlobsBundle<T> {
+    fn from(j: JsonBlobBundlesV1<T>) -> Self {
+        // Use this verbose deconstruction pattern to ensure no field is left unused.
+        let JsonBlobBundlesV1 {
+            block_hash,
+            aggregated_proof,
+            blobs,
+            kzgs,
+        } = j;
+
+        Self {
+            block_hash,
+            aggregated_proof,
+            blobs,
+            kzgs,
+        }
+    }
+}
+
+
 #[derive(Debug, PartialEq, Serialize, Deserialize)]
 #[serde(rename_all = "camelCase")]
 pub struct JsonForkChoiceStateV1 {

beacon_node/execution_layer/src/lib.rs

@@ -835,10 +835,10 @@ impl<T: EthSpec> ExecutionLayer<T> {
 
                 engine
                     .api
-                    .get_payload_v1::<T>(payload_id)
+                    .get_full_payload::<T>(payload_id)
                     .await
                     .map(|full_payload| {
-                        if full_payload.fee_recipient != suggested_fee_recipient {
+                        if full_payload.execution_payload.fee_recipient != suggested_fee_recipient {
                             error!(
                                 self.log(),
                                 "Inconsistent fee recipient";
@@ -847,11 +847,11 @@ impl<T: EthSpec> ExecutionLayer<T> {
                                 indicate that fees are being diverted to another address. Please \
                                 ensure that the value of suggested_fee_recipient is set correctly and \
                                 that the Execution Engine is trusted.",
-                                "fee_recipient" => ?full_payload.fee_recipient,
+                                "fee_recipient" => ?full_payload.execution_payload.fee_recipient,
                                 "suggested_fee_recipient" => ?suggested_fee_recipient,
                             );
                         }
-                        if f(self, &full_payload).is_some() {
+                        if f(self, &full_payload.execution_payload).is_some() {
                             warn!(
                                 self.log(),
                                 "Duplicate payload cached, this might indicate redundant proposal \

consensus/types/src/beacon_block_body.rs

@@ -232,7 +232,7 @@ impl<E: EthSpec> From<BeaconBlockBodyMerge<E, FullPayload<E>>>
             deposits,
             voluntary_exits,
             sync_aggregate,
-            execution_payload: FullPayload { execution_payload },
+            execution_payload: FullPayload { execution_payload, blobs_bundle },
         } = body;
 
         (
@@ -272,7 +272,7 @@ for (
             deposits,
             voluntary_exits,
             sync_aggregate,
-            execution_payload: FullPayload { execution_payload },
+            execution_payload: FullPayload { execution_payload, blobs_bundle },
             blob_kzg_commitments,
         } = body;
 
@@ -324,7 +324,7 @@ impl<E: EthSpec> BeaconBlockBodyMerge<E, FullPayload<E>> {
             deposits,
             voluntary_exits,
             sync_aggregate,
-            execution_payload: FullPayload { execution_payload },
+            execution_payload: FullPayload { execution_payload, blobs_bundle },
         } = self;
 
         BeaconBlockBodyMerge {
@@ -356,7 +356,7 @@ impl<E: EthSpec> BeaconBlockBodyEip4844<E, FullPayload<E>> {
             deposits,
             voluntary_exits,
             sync_aggregate,
-            execution_payload: FullPayload { execution_payload },
+            execution_payload: FullPayload { execution_payload, blobs_bundle },
             blob_kzg_commitments,
         } = self;
 

consensus/types/src/blob.rs

@@ -1,9 +1,23 @@
 use ssz_types::VariableList;
 use serde::{Deserialize, Deserializer, Serialize, Serializer};
 use ssz::{Decode, DecodeError, Encode};
+use crate::test_utils::RngCore;
 use crate::bls_field_element::BlsFieldElement;
-use crate::EthSpec;
+use crate::{EthSpec, Uint256};
+use crate::test_utils::TestRandom;
 
 #[derive(Default, Debug, PartialEq, Hash, Clone, Serialize, Deserialize)]
 #[serde(transparent)]
-pub struct Blob<T: EthSpec>(pub VariableList<BlsFieldElement, T::FieldElementsPerBlob>);
+pub struct Blob<T: EthSpec>(pub VariableList<BlsFieldElement, T::FieldElementsPerBlob>);
+
+impl <T: EthSpec> TestRandom for Blob<T> {
+    fn random_for_test(rng: &mut impl RngCore) -> Self {
+        let mut res = Blob(VariableList::empty());
+        for i in 0..4096 {
+            let slice = ethereum_types::U256([rng.next_u64(), rng.next_u64(), rng.next_u64(), rng.next_u64()]);
+            let elem =BlsFieldElement(slice);
+            res.0.push(elem);
+        }
+        res
+    }
+}

consensus/types/src/execution_payload.rs

@@ -1,4 +1,4 @@
-use crate::{test_utils::TestRandom, *};
+use crate::{test_utils::TestRandom, test_utils::RngCore, *, kzg_commitment::KzgCommitment, kzg_proof::KzgProof, blob::Blob};
 use derivative::Derivative;
 use serde_derive::{Deserialize, Serialize};
 use ssz::Encode;
@@ -43,6 +43,24 @@ pub struct ExecutionPayload<T: EthSpec> {
     pub transactions: Transactions<T>,
 }
 
+#[derive(
+    Default, Debug, Clone, Serialize, Deserialize, Derivative,
+)]
+#[serde(bound = "T: EthSpec")]
+pub struct BlobsBundle<T: EthSpec> {
+    pub block_hash: Hash256,
+    pub kzgs: Vec<KzgCommitment>,
+    pub blobs: Vec<Blob<T>>,
+    pub aggregated_proof: KzgProof,
+}
+
+
+impl <T: EthSpec> TestRandom for BlobsBundle<T> {
+    fn random_for_test(rng: &mut impl RngCore) -> Self {
+        todo!()
+    }
+}
+
 impl<T: EthSpec> ExecutionPayload<T> {
     pub fn empty() -> Self {
         Self::default()

consensus/types/src/payload.rs

@@ -1,4 +1,4 @@
-use crate::{test_utils::TestRandom, *};
+use crate::{test_utils::TestRandom, test_utils::RngCore, *};
 use derivative::Derivative;
 use serde::de::DeserializeOwned;
 use serde::{Deserialize, Serialize};
@@ -8,6 +8,8 @@ use std::fmt::Debug;
 use std::hash::Hash;
 use test_random_derive::TestRandom;
 use tree_hash::TreeHash;
+use execution_payload::BlobsBundle;
+use core::hash::Hasher;
 
 #[derive(Debug)]
 pub enum BlockType {
@@ -218,16 +220,37 @@ impl<T: EthSpec> Encode for BlindedPayload<T> {
     }
 }
 
-#[derive(Default, Debug, Clone, Serialize, Deserialize, TestRandom, Derivative)]
+#[derive(Default, Debug, Clone, Serialize, Deserialize)]
-#[derivative(PartialEq, Hash(bound = "T: EthSpec"))]
 #[serde(bound = "T: EthSpec")]
 pub struct FullPayload<T: EthSpec> {
     pub execution_payload: ExecutionPayload<T>,
+    pub blobs_bundle: Option<BlobsBundle<T>>,
+}
+
+impl <T: EthSpec> TestRandom for FullPayload<T> {
+    fn random_for_test(rng: &mut impl RngCore) -> Self {
+        todo!()
+    }
+}
+
+impl <T: EthSpec> PartialEq for FullPayload<T> {
+    fn eq(&self, other: &FullPayload<T>) -> bool {
+        todo!()
+    }
+}
+
+impl <T: EthSpec> Hash for FullPayload<T> {
+    fn hash<H: Hasher>(&self, into: &mut H) {
+        todo!()
+    }
 }
 
 impl<T: EthSpec> From<ExecutionPayload<T>> for FullPayload<T> {
     fn from(execution_payload: ExecutionPayload<T>) -> Self {
-        Self { execution_payload }
+        Self { 
+            execution_payload,
+            blobs_bundle: None,
+        }
     }
 }
 
@@ -265,6 +288,7 @@ impl<T: EthSpec> Decode for FullPayload<T> {
     fn from_ssz_bytes(bytes: &[u8]) -> Result<Self, DecodeError> {
         Ok(FullPayload {
             execution_payload: Decode::from_ssz_bytes(bytes)?,
+            blobs_bundle: None,
         })
     }
 }

consensus/types/src/signed_beacon_block.rs

@@ -304,7 +304,7 @@ impl<E: EthSpec> SignedBeaconBlockMerge<E, BlindedPayload<E>> {
                     deposits,
                     voluntary_exits,
                     sync_aggregate,
-                    execution_payload: FullPayload { execution_payload },
+                    execution_payload: FullPayload { execution_payload: execution_payload, blobs_bundle: None },
                 },
             },
             signature,
@@ -357,7 +357,7 @@ impl<E: EthSpec> SignedBeaconBlockEip4844<E, BlindedPayload<E>> {
                     deposits,
                     voluntary_exits,
                     sync_aggregate,
-                    execution_payload: FullPayload { execution_payload },
+                    execution_payload: FullPayload { execution_payload: execution_payload, blobs_bundle: None  },
                     blob_kzg_commitments,
                 },
             },