139 lines
3.6 KiB
Nim
139 lines
3.6 KiB
Nim
# Nimbus
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# Copyright (c) 2023-2024 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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{.push raises: [].}
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import
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std/[os, sequtils],
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results,
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rocksdb,
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eth/db/kvstore
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export kvstore
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type
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RocksStoreRef* = ref object of RootObj
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db: RocksDbReadWriteRef
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RocksNamespaceRef* = ref object of RootObj
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colFamily: ColFamilyReadWrite
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# ------------------------------------------------------------------------------
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# RocksStoreRef procs
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# ------------------------------------------------------------------------------
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proc rocksDb*(store: RocksStoreRef): RocksDbReadWriteRef =
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store.db
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proc get*(
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store: RocksStoreRef,
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key: openArray[byte],
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onData: kvstore.DataProc): KvResult[bool] =
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store.db.get(key, onData)
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proc find*(
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store: RocksStoreRef,
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prefix: openArray[byte],
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onFind: kvstore.KeyValueProc): KvResult[int] =
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raiseAssert "Unimplemented"
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proc put*(store: RocksStoreRef, key, value: openArray[byte]): KvResult[void] =
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store.db.put(key, value)
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proc contains*(store: RocksStoreRef, key: openArray[byte]): KvResult[bool] =
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store.db.keyExists(key)
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proc del*(store: RocksStoreRef, key: openArray[byte]): KvResult[bool] =
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let rc = store.db.keyExists(key)
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if rc.isErr:
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return rc
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if not rc.value:
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return ok(false)
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let res = store.db.delete(key)
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if res.isErr():
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return err(res.error())
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ok(true)
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proc clear*(store: RocksStoreRef): KvResult[bool] =
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raiseAssert "Unimplemented"
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proc close*(store: RocksStoreRef) =
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store.db.close()
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proc init*(
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T: type RocksStoreRef,
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basePath: string,
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name: string,
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namespaces = @["default"]): KvResult[T] =
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let dataDir = basePath / name / "data"
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try:
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createDir(dataDir)
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except OSError, IOError:
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return err("RocksStoreRef: cannot create database directory")
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let db = ? openRocksDb(dataDir, columnFamilies = namespaces.mapIt(
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initColFamilyDescriptor(it, defaultColFamilyOptions(autoClose = true))))
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ok(T(db: db))
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# ------------------------------------------------------------------------------
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# RocksNamespaceRef procs
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# ------------------------------------------------------------------------------
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proc name*(store: RocksNamespaceRef): string =
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store.colFamily.name
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proc get*(
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ns: RocksNamespaceRef,
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key: openArray[byte],
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onData: kvstore.DataProc): KvResult[bool] =
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ns.colFamily.get(key, onData)
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proc find*(
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ns: RocksNamespaceRef,
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prefix: openArray[byte],
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onFind: kvstore.KeyValueProc): KvResult[int] =
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raiseAssert "Unimplemented"
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proc put*(ns: RocksNamespaceRef, key, value: openArray[byte]): KvResult[void] =
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ns.colFamily.put(key, value)
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proc contains*(ns: RocksNamespaceRef, key: openArray[byte]): KvResult[bool] =
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ns.colFamily.keyExists(key)
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proc del*(ns: RocksNamespaceRef, key: openArray[byte]): KvResult[bool] =
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let exists = ? ns.colFamily.keyExists(key)
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if not exists:
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return ok(false)
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let res = ns.colFamily.delete(key)
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if res.isErr():
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return err(res.error())
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ok(true)
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proc clear*(ns: RocksNamespaceRef): KvResult[bool] =
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raiseAssert "Unimplemented"
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proc close*(ns: RocksNamespaceRef) =
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# To close the database, call close on RocksStoreRef.
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raiseAssert "Unimplemented"
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proc openNamespace*(
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store: RocksStoreRef,
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name: string): KvResult[RocksNamespaceRef] =
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doAssert not store.db.isClosed()
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ok(RocksNamespaceRef(colFamily: ?store.db.getColFamily(name)))
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