104 lines
4.0 KiB
Nim
104 lines
4.0 KiB
Nim
# beacon_chain
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# Copyright (c) 2018-2024 Status Research & Development GmbH
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# Licensed and distributed under either of
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# * MIT license (license terms in the root directory or at https://opensource.org/licenses/MIT).
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# * Apache v2 license (license terms in the root directory or at https://www.apache.org/licenses/LICENSE-2.0).
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# at your option. This file may not be copied, modified, or distributed except according to those terms.
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{.push raises: [].}
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import
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std/tables,
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../spec/[helpers, eip7594_helpers]
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from std/sequtils import mapIt
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from std/strutils import join
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const
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MaxDataColumns = 3 * SLOTS_PER_EPOCH * NUMBER_OF_COLUMNS
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## Same limit as `MaxOrphans` in `block_quarantine`
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## data columns may arrive before an orphan is tagged `columnless`
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type
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DataColumnQuarantine* = object
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data_columns*:
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OrderedTable[(Eth2Digest, ColumnIndex), ref DataColumnSidecar]
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onDataColumnSidecarCallback*: OnDataColumnSidecarCallback
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DataColumnFetchRecord* = object
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block_root*: Eth2Digest
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indices*: seq[ColumnIndex]
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OnDataColumnSidecarCallback = proc(data: DataColumnSidecar) {.gcsafe, raises: [].}
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func shortLog*(x: seq[ColumnIndex]): string =
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"<" & x.mapIt($it).join(", ") & ">"
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func shortLog*(x: seq[DataColumnFetchRecord]): string =
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"[" & x.mapIt(shortLog(it.block_root) & shortLog(it.indices)).join(", ") & "]"
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func put*(quarantine: var DataColumnQuarantine, dataColumnSidecar: ref DataColumnSidecar) =
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if quarantine.data_columns.lenu64 >= MaxDataColumns:
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# FIFO if full. For example, sync manager and request manager can race to
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# put data columns in at the same time, so one gets blob insert -> block resolve
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# -> data columns insert sequence, which leaves garbage data columns.
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#
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# This also therefore automatically garbage-collects otherwise valid garbage
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# data columns which are correctly signed, point to either correct block roots or a
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# block root which isn't ever seen, and then are for any reason simply never
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# used.
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var oldest_column_key: (Eth2Digest, ColumnIndex)
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for k in quarantine.data_columns.keys:
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oldest_column_key = k
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break
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quarantine.data_columns.del(oldest_column_key)
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let block_root = hash_tree_root(dataColumnSidecar.signed_block_header.message)
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discard quarantine.data_columns.hasKeyOrPut(
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(block_root, dataColumnSidecar.index), dataColumnSidecar)
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func hasDataColumn*(
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quarantine: DataColumnQuarantine,
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slot: Slot,
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proposer_index: uint64,
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index: ColumnIndex): bool =
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for data_column_sidecar in quarantine.data_columns.values:
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template block_header: untyped = data_column_sidecar.signed_block_header.message
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if block_header.slot == slot and
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block_header.proposer_index == proposer_index and
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data_column_sidecar.index == index:
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return true
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false
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func popDataColumns*(
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quarantine: var DataColumnQuarantine, digest: Eth2Digest,
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blck: deneb.SignedBeaconBlock | electra.SignedBeaconBlock):
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seq[ref DataColumnSidecar] =
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var r: seq[ref DataColumnSidecar]
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for idx in 0..<len(blck.message.body.blob_kzg_commitments):
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var c: ref DataColumnSidecar
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if quarantine.data_columns.pop((digest, ColumnIndex idx), c):
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r.add(c)
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true
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func hasDataColumns*(quarantine: DataColumnQuarantine,
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blck: deneb.SignedBeaconBlock | electra.SignedBeaconBlock): bool =
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for idx in 0..<len(blck.message.body.blob_kzg_commitments):
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if (blck.root, ColumnIndex idx) notin quarantine.data_columns:
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return false
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true
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func dataColumnFetchRecord*(quarantine: DataColumnQuarantine,
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blck: deneb.SignedBeaconBlock | electra.SignedBeaconBlock): DataColumnFetchRecord =
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var indices: seq[ColumnIndex]
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for i in 0..<len(blck.message.body.blob_kzg_commitments):
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let idx = ColumnIndex(i)
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if not quarantine.data_columns.hasKey(
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(blck.root, idx)):
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indices.add(idx)
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DataColumnFetchRecord(block_root: blck.root, indices: indices)
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func init*(
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T: type DataColumnQuarantine, onDataColumnSidecarCallback: OnDataColumnSidecarCallback): T =
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T(onDataColumnSidecarCallback: onDataColumnSidecarCallback)
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