nimbus-eth1/nimbus/db/kvt/kvt_walk/persistent.nim

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Nim

# Nimbus-eth1
# Copyright (c) 2023 Status Research & Development GmbH
# Licensed under either of
# * Apache License, version 2.0, ([LICENSE-APACHE](LICENSE-APACHE) or
# http://www.apache.org/licenses/LICENSE-2.0)
# * MIT license ([LICENSE-MIT](LICENSE-MIT) or
# http://opensource.org/licenses/MIT)
# at your option. This file may not be copied, modified, or
# distributed except according to those terms.
## Iterators for persistent backend of the Kvt DB
## ==============================================
##
## This module automatically pulls in the persistent backend library at the
## linking stage (e.g. `rocksdb`) which can be avoided for pure memory DB
## applications by importing `./kvt_walk/memory_only` (rather than
## `./kvt_walk/persistent`.)
##
import
eth/common,
../kvt_init/[rocks_db, persistent],
../kvt_desc,
"."/[memory_only, walk_private]
export
rocks_db,
memory_only,
persistent
# ------------------------------------------------------------------------------
# Public iterators (all in one)
# ------------------------------------------------------------------------------
iterator walkPairs*(
T: type RdbBackendRef;
db: KvtDbRef;
): tuple[key: Blob, data: Blob] =
## Iterate over backend filters.
for (key,data) in walkPairsImpl[T](db):
yield (key,data)
# ------------------------------------------------------------------------------
# End
# ------------------------------------------------------------------------------