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Implement getBlobSidecars support for PeerDAS (#6755)

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* Implement getBlobSidecars endpoint for PeerDAS.

* Merge branch 'unstable' into peerdas-get-blob-sidecars

* Fix incorrect logging.

* Replace `and_then` usage.
This commit is contained in:
Jimmy Chen
2025-01-08 14:12:34 +11:00
committed by GitHub
parent 57141d8b4b
commit 7ec748a108
3 changed files with 202 additions and 31 deletions
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84
beacon_node/http_api/src/block_id.rs
View File

@@ -1,4 +1,5 @@
use crate::{state_id::checkpoint_slot_and_execution_optimistic, ExecutionOptimistic};
use beacon_chain::kzg_utils::reconstruct_blobs;
use beacon_chain::{BeaconChain, BeaconChainError, BeaconChainTypes, WhenSlotSkipped};
use eth2::types::BlobIndicesQuery;
use eth2::types::BlockId as CoreBlockId;
@@ -9,6 +10,7 @@ use types::{
BlobSidecarList, EthSpec, FixedBytesExtended, Hash256, SignedBeaconBlock,
SignedBlindedBeaconBlock, Slot,
};
use warp::Rejection;
/// Wraps `eth2::types::BlockId` and provides a simple way to obtain a block or root for a given
/// `BlockId`.
@@ -261,7 +263,7 @@ impl BlockId {
#[allow(clippy::type_complexity)]
pub fn get_blinded_block_and_blob_list_filtered<T: BeaconChainTypes>(
&self,
indices: BlobIndicesQuery,
query: BlobIndicesQuery,
chain: &BeaconChain<T>,
) -> Result<
(
@@ -286,20 +288,32 @@ impl BlockId {
// Return the `BlobSidecarList` identified by `self`.
let blob_sidecar_list = if !blob_kzg_commitments.is_empty() {
chain
.store
.get_blobs(&root)
.map_err(|e| warp_utils::reject::beacon_chain_error(e.into()))?
.ok_or_else(|| {
warp_utils::reject::custom_not_found(format!(
"no blobs stored for block {root}"
))
})?
if chain.spec.is_peer_das_enabled_for_epoch(block.epoch()) {
Self::get_blobs_from_data_columns(chain, root, query.indices, &block)?
} else {
Self::get_blobs(chain, root, query.indices)?
}
} else {
BlobSidecarList::default()
};
let blob_sidecar_list_filtered = match indices.indices {
Ok((block, blob_sidecar_list, execution_optimistic, finalized))
}
fn get_blobs<T: BeaconChainTypes>(
chain: &BeaconChain<T>,
root: Hash256,
indices: Option<Vec<u64>>,
) -> Result<BlobSidecarList<T::EthSpec>, Rejection> {
let blob_sidecar_list = chain
.store
.get_blobs(&root)
.map_err(|e| warp_utils::reject::beacon_chain_error(e.into()))?
.ok_or_else(|| {
warp_utils::reject::custom_not_found(format!("no blobs stored for block {root}"))
})?;
let blob_sidecar_list_filtered = match indices {
Some(vec) => {
let list = blob_sidecar_list
.into_iter()
@@ -310,12 +324,48 @@ impl BlockId {
}
None => blob_sidecar_list,
};
Ok((
block,
blob_sidecar_list_filtered,
execution_optimistic,
finalized,
))
Ok(blob_sidecar_list_filtered)
}
fn get_blobs_from_data_columns<T: BeaconChainTypes>(
chain: &BeaconChain<T>,
root: Hash256,
blob_indices: Option<Vec<u64>>,
block: &SignedBlindedBeaconBlock<<T as BeaconChainTypes>::EthSpec>,
) -> Result<BlobSidecarList<T::EthSpec>, Rejection> {
let column_indices = chain.store.get_data_column_keys(root).map_err(|e| {
warp_utils::reject::custom_server_error(format!(
"Error fetching data columns keys: {e:?}"
))
})?;
let num_found_column_keys = column_indices.len();
let num_required_columns = chain.spec.number_of_columns / 2;
let is_blob_available = num_found_column_keys >= num_required_columns;
if is_blob_available {
let data_columns = column_indices
.into_iter()
.filter_map(
|column_index| match chain.get_data_column(&root, &column_index) {
Ok(Some(data_column)) => Some(Ok(data_column)),
Ok(None) => None,
Err(e) => Some(Err(warp_utils::reject::beacon_chain_error(e))),
},
)
.collect::<Result<Vec<_>, _>>()?;
reconstruct_blobs(&chain.kzg, &data_columns, blob_indices, block).map_err(|e| {
warp_utils::reject::custom_server_error(format!(
"Error reconstructing data columns: {e:?}"
))
})
} else {
Err(warp_utils::reject::custom_server_error(
format!("Insufficient data columns to reconstruct blobs: required {num_required_columns}, but only {num_found_column_keys} were found.")
))
}
}
}