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https://github.com/status-im/nimbus-eth1.git
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42bb640443
By introducing the "shared rocksdb instance" concept to the backend, we can remove the "piggybacking" mode , thus reducing the complexity of database initialisation and opening the possibility of extending how write batching works across kvt/aristo. The change makes explicit the hidden shared state that was previously hiding in closures and provides the first step towards simplifying the "commit/persist" interface of coredb, preparing it for optimizations to reduce the "layering tax" that `forked-layers` introduced.
54 lines
1.6 KiB
Nim
54 lines
1.6 KiB
Nim
# nimbus-eth1
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# Copyright (c) 2023-2025 Status Research & Development GmbH
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# Licensed under either of
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# * Apache License, version 2.0, ([LICENSE-APACHE](LICENSE-APACHE) or
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# http://www.apache.org/licenses/LICENSE-2.0)
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# * MIT license ([LICENSE-MIT](LICENSE-MIT) or
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# http://opensource.org/licenses/MIT)
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# at your option. This file may not be copied, modified, or distributed
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# except according to those terms.
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## Persistent constructor for Kvt DB
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## ====================================
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##
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## This module automatically pulls in the persistent backend library at the
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## linking stage (e.g. `rocksdb`) which can be avoided for pure memory DB
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## applications by importing `./kvt_init/memory_only` (rather than
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## `./kvt_init/persistent`.)
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##
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{.push raises: [].}
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import
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rocksdb,
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results,
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../../aristo,
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../../opts,
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../kvt_desc,
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"."/[rocks_db, memory_only]
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export
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RdbBackendRef,
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memory_only,
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kvt_desc
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# ------------------------------------------------------------------------------
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# Public database constuctors, destructor
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# ------------------------------------------------------------------------------
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proc init*(
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T: type KvtDbRef;
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B: type RdbBackendRef;
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baseDb: RocksDbInstanceRef;
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): Result[KvtDbRef,KvtError] =
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## Generic constructor for `RocksDb` backend
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##
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let db = KvtDbRef(
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txRef: KvtTxRef(layer: LayerRef.init()),
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backend: rocksDbKvtBackend(baseDb))
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db.txRef.db = db
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ok db
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# ------------------------------------------------------------------------------
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# End
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# ------------------------------------------------------------------------------
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