add 'gossip blob cache' and start to clean up processing and transition types

consensus/types/src/blob_sidecar.rs

@@ -3,9 +3,9 @@ use crate::{Blob, EthSpec, Hash256, SignedRoot, Slot};
 use derivative::Derivative;
 use kzg::{KzgCommitment, KzgProof};
 use serde_derive::{Deserialize, Serialize};
+use bls::Signature;
 use ssz::Encode;
 use ssz_derive::{Decode, Encode};
-use ssz_types::VariableList;
 use test_random_derive::TestRandom;
 use tree_hash_derive::TreeHash;
 
@@ -52,6 +52,10 @@ pub type BlobSidecarList<T> = VariableList<BlobSidecar<T>, <T as EthSpec>::MaxBl
 impl<T: EthSpec> SignedRoot for BlobSidecar<T> {}
 
 impl<T: EthSpec> BlobSidecar<T> {
+    pub fn id(&self) -> BlobIdentifier {
+        BlobIdentifier::new(self.block_root, self.index)
+    }
+
     pub fn empty() -> Self {
         Self::default()
     }

consensus/types/src/lib.rs

@@ -25,6 +25,7 @@ pub mod beacon_block_body;
 pub mod beacon_block_header;
 pub mod beacon_committee;
 pub mod beacon_state;
+pub mod blob_sidecar;
 pub mod bls_to_execution_change;
 pub mod builder_bid;
 pub mod chain_spec;
@@ -219,6 +220,7 @@ pub type BLSFieldElement = Uint256;
 pub type Blob<T> = FixedVector<u8, <T as EthSpec>::BytesPerBlob>;
 pub type VersionedHash = Hash256;
 pub type Hash64 = ethereum_types::H64;
+pub type BlobsSidecar<T> = VariableList<BlobSidecar<T>, <T as EthSpec>::MaxBlobsPerBlock>;
 
 pub use bls::{
     AggregatePublicKey, AggregateSignature, Keypair, PublicKey, PublicKeyBytes, SecretKey,
@@ -229,3 +231,4 @@ pub use kzg::{KzgCommitment, KzgProof};
 
 pub use ssz_types::{typenum, typenum::Unsigned, BitList, BitVector, FixedVector, VariableList};
 pub use superstruct::superstruct;
+use crate::blob_sidecar::BlobSidecar;

consensus/types/src/signed_beacon_block.rs

@@ -35,14 +35,6 @@ impl From<SignedBeaconBlockHash> for Hash256 {
     }
 }
 
-#[derive(Debug)]
-pub enum BlobReconstructionError {
-    /// No blobs for the specified block where we would expect blobs.
-    UnavailableBlobs,
-    /// Blobs provided for a pre-Eip4844 fork.
-    InconsistentFork,
-}
-
 /// A `BeaconBlock` and a signature from its proposer.
 #[superstruct(
     variants(Base, Altair, Merge, Capella, Eip4844),