block and blob handling progress

beacon_node/beacon_chain/src/early_attester_cache.rs

@@ -20,6 +20,7 @@ pub struct CacheItem<E: EthSpec> {
      * Values used to make the block available.
      */
     block: Arc<SignedBeaconBlock<E>>,
+    blobs: Option<Arc<BlobsSidecar<E>>>,
     proto_block: ProtoBlock,
 }
 
@@ -50,6 +51,7 @@ impl<E: EthSpec> EarlyAttesterCache<E> {
         &self,
         beacon_block_root: Hash256,
         block: Arc<SignedBeaconBlock<E>>,
+        blobs: Option<Arc<BlobsSidecar<E>>>,
         proto_block: ProtoBlock,
         state: &BeaconState<E>,
         spec: &ChainSpec,
@@ -74,6 +76,7 @@ impl<E: EthSpec> EarlyAttesterCache<E> {
             source,
             target,
             block,
+            blobs,
             proto_block,
         };
 
@@ -155,6 +158,16 @@ impl<E: EthSpec> EarlyAttesterCache<E> {
             .map(|item| item.block.clone())
     }
 
+    /// Returns the blobs, if `block_root` matches the cached item.
+    pub fn get_blobs(&self, block_root: Hash256) -> Option<Arc<BlobsSidecar<E>>> {
+        self.item
+            .read()
+            .as_ref()
+            .filter(|item| item.beacon_block_root == block_root)
+            .map(|item| item.blobs.clone())
+            .flatten()
+    }
+
     /// Returns the proto-array block, if `block_root` matches the cached item.
     pub fn get_proto_block(&self, block_root: Hash256) -> Option<ProtoBlock> {
         self.item