104 lines
3.0 KiB
Nim
104 lines
3.0 KiB
Nim
# nimbus-eth1
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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
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# except according to those terms.
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## Rocksdb constructor/destructor for Kvt DB
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## =========================================
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{.push raises: [].}
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import
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std/[sequtils, os],
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rocksdb,
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results,
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../../../opts,
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../../kvt_desc,
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../../kvt_desc/desc_error as kdb,
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./rdb_desc
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export rdb_desc, results
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# ------------------------------------------------------------------------------
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# Public constructor
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# ------------------------------------------------------------------------------
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proc init*(
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rdb: var RdbInst;
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basePath: string;
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dbOpts: DbOptionsRef;
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cfOpts: ColFamilyOptionsRef;
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): Result[void,(KvtError,string)] =
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## Database backend constructor for stand-alone version
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##
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const initFailed = "RocksDB/init() failed"
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rdb.basePath = basePath
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let
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dataDir = rdb.dataDir
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try:
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dataDir.createDir
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except OSError, IOError:
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return err((kdb.RdbBeCantCreateDataDir, ""))
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# Column familiy names to allocate when opening the database.
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let cfs = KvtCFs.mapIt(($it).initColFamilyDescriptor cfOpts)
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# Open database for the extended family :)
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let baseDb = openRocksDb(dataDir, dbOpts, columnFamilies=cfs).valueOr:
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raiseAssert initFailed & " cannot create base descriptor: " & error
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# Initialise column handlers (this stores implicitely `baseDb`)
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for col in KvtCFs:
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rdb.store[col] = baseDb.withColFamily($col).valueOr:
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raiseAssert initFailed & " cannot initialise " &
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$col & " descriptor: " & error
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ok()
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proc guestCFs*(T: type RdbInst, cfOpts: ColFamilyOptionsRef): seq =
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KvtCFs.toSeq.mapIt(initColFamilyDescriptor($it, cfOpts))
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proc init*(
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rdb: var RdbInst;
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oCfs: openArray[ColFamilyReadWrite];
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): Result[void,(KvtError,string)] =
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## Initalise column handlers piggy-backing on the `Aristo` backend.
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##
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# Collect column family descriptors (this stores implicitely `baseDb`)
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for n in KvtCFs:
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assert oCfs[n.ord].name != "" # debugging only
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rdb.store[n] = oCfs[n.ord]
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ok()
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proc destroy*(rdb: var RdbInst; eradicate: bool) =
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## Destructor (no need to do anything if piggybacked)
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if 0 < rdb.basePath.len:
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rdb.baseDb.close()
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if eradicate:
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try:
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rdb.dataDir.removeDir
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# Remove the base folder if it is empty
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block done:
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for w in rdb.baseDir.walkDirRec:
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# Ignore backup files
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if 0 < w.len and w[^1] != '~':
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break done
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rdb.baseDir.removeDir
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except CatchableError:
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discard
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# ------------------------------------------------------------------------------
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# End
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# ------------------------------------------------------------------------------
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