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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.
50 lines
1.4 KiB
Nim
50 lines
1.4 KiB
Nim
# Nimbus
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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 except
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# according to those terms.
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## This module automatically pulls in the persistent backend libraries 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 `db/code_db/memory_only` (rather than
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## `db/core_db/persistent`.)
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##
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## The right way to use this file on a conditional mode is to import it as in
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## ::
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## import ./path/to/core_db
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## when ..condition..
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## import ./path/to/core_db/persistent
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##
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{.push raises: [].}
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import
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../aristo,
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./memory_only,
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./backend/aristo_rocksdb,
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../opts
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export
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memory_only
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proc newCoreDbRef*(
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dbType: static[CoreDbType]; # Database type symbol
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path: string; # Storage path for database
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opts: DbOptions;
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): CoreDbRef =
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## Constructor for persistent type DB
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##
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## The production database type is `AristoDbRocks` which uses a single
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## `RocksDb` backend for both, `Aristo` and `KVT`.
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##
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when dbType == AristoDbRocks:
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newRocksDbCoreDbRef path, opts
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else:
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{.error: "Unsupported dbType for persistent newCoreDbRef()".}
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# End
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