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nimbus-eth1/nimbus/db/aristo/aristo_walk.nim

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Aristo and ledger small updates (#1888) * Fix debug noise in `hashify()` for perfectly normal situation why: Was previously considered a fixable error * Fix test sample file names why: The larger test file `goerli68161.txt.gz` is already in the local archive. So there is no need to use the smaller one from the external repo. * Activate `accounts_cache` module from `db/ledger` why: A copy of the original `accounts_cache.nim` source to be integrated into the `Ledger` module wrapper which allows to switch between different `accounts_cache` implementations unser tha same API. details: At a later state, the `db/accounts_cache.nim` wrapper will be removed so that there is only one access to that module via `db/ledger/accounts_cache.nim`. * Fix copyright headers in source code
2023-11-08 16:52:25 +00:00
# Nimbus
# Copyright (c) 2023 Status Research & Development GmbH
Aristo db use filter betw backend and tx cache (#1678) * Provide deep copy for each transaction layer why: Localising changes. Selective deep copy was just overlooked. * Generalise vertex ID generator state reorg function `vidReorg()` why: makes it somewhat easier to handle when saving layers. * Provide dummy back end descriptor `NoneBackendRef` * Optional read-only filter between backend and transaction cache why: Some staging area for accumulating changes to the backend DB. This will eventually be an access layer for emulating a backend with multiple/historic state roots. * Re-factor `persistent()` with filter between backend/tx-cache => `stow()` why: The filter provides an abstraction from the physically stored data on disk. So, there can be several MPT instances using the same disk data with different state roots. Of course, all the MPT instances should not differ too much for practical reasons :). TODO: Filter administration tools need to be provided.
2023-08-10 20:01:28 +00:00
# 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.
## Backend DB traversal for Aristo DB
## ==================================
##
## This module provides iterators for the memory based backend or the
## backend-less database. Do import `aristo_walk/persistent` for the
## persistent backend though avoiding to unnecessarily link to the persistent
## backend library (e.g. `rocksdb`) when a memory only database is used.
##
{.push raises: [].}
import
./aristo_walk/memory_only
export
memory_only
# End