55 lines
1.4 KiB
Nim
55 lines
1.4 KiB
Nim
{.push raises: [Defect].}
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import
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std/os,
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rocksdb, stew/results,
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eth/db/kvstore
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export results, 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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store*: RocksDBInstance
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tmpDir*: string
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proc get*(db: RocksStoreRef, key: openArray[byte], onData: kvstore.DataProc): KvResult[bool] =
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db.store.get(key, onData)
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proc find*(db: RocksStoreRef, prefix: openArray[byte], onFind: kvstore.KeyValueProc): KvResult[int] =
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raiseAssert "Unimplemented"
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proc put*(db: RocksStoreRef, key, value: openArray[byte]): KvResult[void] =
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db.store.put(key, value)
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proc contains*(db: RocksStoreRef, key: openArray[byte]): KvResult[bool] =
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db.store.contains(key)
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proc del*(db: RocksStoreRef, key: openArray[byte]): KvResult[void] =
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db.store.del(key)
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proc close*(db: RocksStoreRef) =
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db.store.close
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proc init*(
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T: type RocksStoreRef, basePath: string, 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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tmpDir = basePath / name / "tmp"
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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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var store: RocksDBInstance
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if (let v = store.init(
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dataDir, backupsDir, readOnly, maxOpenFiles = maxOpenFiles); v.isErr):
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return err(v.error)
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ok(T(store: store))
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