ByteDurableDb.snapshot.root.value.length.metadata.read: def of mylsm-lsm-store@0.6.0.1
Import: import mylsm-lsm-store@0.6.0.1/src/ByteDurableDb.bend as ByteDurableDb
Lines 3015-3029 of mylsm-lsm-store@0.6.0.1/src/ByteDurableDb.bend: https://jend.leeeet.dev/read.txt?path=mylsm-lsm-store@0.6.0.1/src/ByteDurableDb.bend&start_line=3015&end_line=3029

import Base
import mylsm-lsm-store@0.6.0.1/src/ByteMemTable.bend as ByteMemTable
import mylsm-lsm-store@0.6.0.1/src/ByteWal.bend as ByteWal
import mylsm-lsm-store@0.6.0.1/src/scan/SstCursor.bend as SstCursor
import bend-kit-bytes@0.3.2.0/bytes.bend as Bytes

def snapshot.root.value.length.metadata.read(
  sst_path: Maybe<&1, String>,
  probe: ByteMemTable.LengthProbe,
  key: Bytes.Bytes
) -> IO(Result<&1, &1, Error, Maybe<&1, U32>>):
  match sst_path:
    case None{}:
      IO.pure(Result<&1, &1, Error, Maybe<&1, U32>>,
        snapshot.root.value.length.metadata(probe,
          Done{ByteWal.ValueAbsent{}}))
    case Some{path}:
      do IO<Result<&1, &1, Error, Maybe<&1, U32>>>:
        measured : Result<&1, &1, U32 & String, ByteWal.ValueMetadata> <-
          SstCursor.measure_key(path, key)
        return snapshot.root.value.length.metadata(probe, measured)

Uses (14):
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=IO
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=IO.bind
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=IO.pure
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Maybe
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Pair
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Result
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=String
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=U32
  https://jend.leeeet.dev/definition.txt?path=bend-kit-bytes@0.3.3.0/bytes.bend&name=Bytes
  https://jend.leeeet.dev/definition.txt?path=mylsm-lsm-store@0.6.0.1/src/ByteDurableDb.bend&name=Error
  https://jend.leeeet.dev/definition.txt?path=mylsm-lsm-store@0.6.0.1/src/ByteDurableDb.bend&name=snapshot.root.value.length.metadata
  https://jend.leeeet.dev/definition.txt?path=mylsm-lsm-store@0.6.0.1/src/ByteMemTable.bend&name=LengthProbe
  https://jend.leeeet.dev/definition.txt?path=mylsm-lsm-store@0.6.0.1/src/ByteWal.bend&name=ValueMetadata
  https://jend.leeeet.dev/definition.txt?path=mylsm-lsm-store@0.6.0.1/src/scan/SstCursor.bend&name=measure_key