104 lines
2.8 KiB
Nim
104 lines
2.8 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,
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stew/results,
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rocksdb,
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eth/db/kvstore
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export kvstore
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const maxOpenFiles = 512
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type
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RocksStoreRef* = ref object of RootObj
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db: RocksDbRef
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backupEngine: BackupEngineRef
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readOnly: bool
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proc readOnly*(store: RocksStoreRef): bool =
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store.readOnly
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proc readOnlyDb*(store: RocksStoreRef): RocksDbReadOnlyRef =
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doAssert store.readOnly
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store.db.RocksDbReadOnlyRef
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proc readWriteDb*(store: RocksStoreRef): RocksDbReadWriteRef =
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doAssert not store.readOnly
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store.db.RocksDbReadWriteRef
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template validateCanWriteAndGet(store: RocksStoreRef): RocksDbReadWriteRef =
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if store.readOnly:
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raiseAssert "Unimplemented"
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store.db.RocksDbReadWriteRef
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proc get*(store: RocksStoreRef, key: openArray[byte], onData: kvstore.DataProc): KvResult[bool] =
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store.db.get(key, onData)
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proc find*(store: RocksStoreRef, prefix: openArray[byte], 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.validateCanWriteAndGet().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 db = store.validateCanWriteAndGet()
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let exists = ? db.keyExists(key)
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if not exists:
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return ok(false)
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let res = 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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store.backupEngine.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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readOnly = false): KvResult[T] =
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let
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dataDir = basePath / name / "data"
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backupsDir = basePath / name / "backups"
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try:
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createDir(dataDir)
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createDir(backupsDir)
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except OSError, IOError:
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return err("rocksdb: cannot create database directory")
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let backupEngine = ? openBackupEngine(backupsDir)
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let dbOpts = defaultDbOptions()
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dbOpts.setMaxOpenFiles(maxOpenFiles)
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if readOnly:
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let readOnlyDb = ? openRocksDbReadOnly(dataDir, dbOpts)
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ok(T(db: readOnlyDb, backupEngine: backupEngine, readOnly: true))
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else:
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let readWriteDb = ? openRocksDb(dataDir, dbOpts)
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ok(T(db: readWriteDb, backupEngine: backupEngine, readOnly: false))
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