Cell Dissemination (Partial messages) (#8314)

- https://github.com/ethereum/consensus-specs/pull/4558
- https://eips.ethereum.org/EIPS/eip-8136


  


Co-Authored-By: Daniel Knopik <daniel@dknopik.de>

Co-Authored-By: Pawan Dhananjay <pawandhananjay@gmail.com>

Co-Authored-By: Jimmy Chen <jchen.tc@gmail.com>

beacon_node/execution_layer/src/lib.rs

@@ -4,7 +4,7 @@
 //! This crate only provides useful functionality for "The Merge", it does not provide any of the
 //! deposit-contract functionality that the `beacon_node/eth1` crate already provides.
 
-use crate::json_structures::{BlobAndProofV1, BlobAndProofV2};
+use crate::json_structures::{BlobAndProofV1, BlobAndProofV2, BlobAndProofV3};
 use crate::payload_cache::PayloadCache;
 use arc_swap::ArcSwapOption;
 use auth::{Auth, JwtKey, strip_prefix};
@@ -1741,6 +1741,23 @@ impl<E: EthSpec> ExecutionLayer<E> {
         }
     }
 
+    pub async fn get_blobs_v3(
+        &self,
+        query: Vec<Hash256>,
+    ) -> Result<Option<Vec<BlobAndProofV3<E>>>, Error> {
+        let capabilities = self.get_engine_capabilities(None).await?;
+
+        if capabilities.get_blobs_v3 {
+            self.engine()
+                .request(|engine| async move { engine.api.get_blobs_v3(query).await })
+                .await
+                .map_err(Box::new)
+                .map_err(Error::EngineError)
+        } else {
+            Err(Error::GetBlobsNotSupported)
+        }
+    }
+
     pub async fn get_block_by_number(
         &self,
         query: BlockByNumberQuery<'_>,