nimbus-eth1/nimbus/db/kvt/kvt_walk/persistent.nim
Jordan Hrycaj dda049cd43
Simple stupid key-value table companion for Aristo DB (#1746)
why:
  Additional tables needed for the `CoreDB` object with separate
  key-value table and MPT.

details:
+ Stripped down copy of Aristo DB to have a similar look'n feel. Otherwise
  it is just a posh way for accessing `Table` objects or `RocksDB` data.
+ No unit tests yet, will be tested on the go.
2023-09-12 19:44:45 +01:00

43 lines
1.4 KiB
Nim

# Nimbus - Types, data structures and shared utilities used in network sync
#
# Copyright (c) 2018-2021 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],
./memory_only
export
rocks_db,
memory_only,
persistent
# ------------------------------------------------------------------------------
# Public iterators (all in one)
# ------------------------------------------------------------------------------
iterator walkAny*(
be: RdbBackendRef;
): tuple[key: Blob, data: Blob] =
## Walk filter slots in fifo order.
for (k,v) in be.walk:
yield (k,v)
# ------------------------------------------------------------------------------
# End
# ------------------------------------------------------------------------------