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Data column custody info (#7648)

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#7647


  Introduces a new record in the blobs db `DataColumnCustodyInfo`

When `DataColumnCustodyInfo` exists in the db this indicates that a recent cgc change has occurred and/or that a custody backfill sync is currently in progress (custody backfill will be added as a separate PR). When a cgc change has occurred `earliest_available_slot` will be equal to the slot at which the cgc change occured. During custody backfill sync`earliest_available_slot` should be updated incrementally as it progresses.

~~Note that if `advertise_false_custody_group_count` is enabled we do not add a `DataColumnCustodyInfo` record in the db as that would affect the status v2 response.~~
(See comment https://github.com/sigp/lighthouse/pull/7648#discussion_r2212403389)

~~If `DataColumnCustodyInfo` doesn't exist in the db this indicates that we have fulfilled our custody requirements up to the DA window.~~
(It now always exist, and the slot will be set to `None` once backfill is complete)

StatusV2 now uses `DataColumnCustodyInfo` to calculate the `earliest_available_slot` if a `DataColumnCustodyInfo` record exists in the db, if it's `None`, then we return the `oldest_block_slot`.
This commit is contained in:
Eitan Seri-Levi
2025-07-22 15:30:30 +02:00
committed by GitHub
parent b48879a566
commit db8b6be9df
11 changed files with 185 additions and 13 deletions
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27
beacon_node/store/src/metadata.rs
View File

@@ -4,7 +4,7 @@ use ssz::{Decode, Encode};
use ssz_derive::{Decode, Encode};
use types::{Hash256, Slot};
pub const CURRENT_SCHEMA_VERSION: SchemaVersion = SchemaVersion(26);
pub const CURRENT_SCHEMA_VERSION: SchemaVersion = SchemaVersion(27);
// All the keys that get stored under the `BeaconMeta` column.
//
@@ -18,6 +18,7 @@ pub const COMPACTION_TIMESTAMP_KEY: Hash256 = Hash256::repeat_byte(4);
pub const ANCHOR_INFO_KEY: Hash256 = Hash256::repeat_byte(5);
pub const BLOB_INFO_KEY: Hash256 = Hash256::repeat_byte(6);
pub const DATA_COLUMN_INFO_KEY: Hash256 = Hash256::repeat_byte(7);
pub const DATA_COLUMN_CUSTODY_INFO_KEY: Hash256 = Hash256::repeat_byte(8);
/// State upper limit value used to indicate that a node is not storing historic states.
pub const STATE_UPPER_LIMIT_NO_RETAIN: Slot = Slot::new(u64::MAX);
@@ -204,6 +205,30 @@ impl StoreItem for BlobInfo {
}
}
/// Database parameter relevant to data column custody sync. There is only at most a single
/// `DataColumnCustodyInfo` stored in the db. `earliest_data_column_slot` is updated when cgc
/// count changes and is updated incrementally during data column custody backfill. Once custody backfill
/// is complete `earliest_data_column_slot` is set to `None`.
#[derive(Debug, PartialEq, Eq, Clone, Encode, Decode, Serialize, Deserialize, Default)]
pub struct DataColumnCustodyInfo {
/// The earliest slot for which data columns are available.
pub earliest_data_column_slot: Option<Slot>,
}
impl StoreItem for DataColumnCustodyInfo {
fn db_column() -> DBColumn {
DBColumn::BeaconDataColumnCustodyInfo
}
fn as_store_bytes(&self) -> Vec<u8> {
self.as_ssz_bytes()
}
fn from_store_bytes(bytes: &[u8]) -> Result<Self, Error> {
Ok(DataColumnCustodyInfo::from_ssz_bytes(bytes)?)
}
}
/// Database parameters relevant to data column sync.
#[derive(Debug, PartialEq, Eq, Clone, Encode, Decode, Serialize, Deserialize, Default)]
pub struct DataColumnInfo {