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https://github.com/status-im/nimbus-eth1.git
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81e75622cf
The state and account MPT:s currenty share key space in the database based on that vertex id:s are assigned essentially randomly, which means that when two adjacent slot values from the same contract are accessed, they might reside at large distance from each other. Here, we prefix each vertex id by its root causing them to be sorted together thus bringing all data belonging to a particular contract closer together - the same effect also happens for the main state MPT whose nodes now end up clustered together more tightly. In the future, the prefix given to the storage keys can also be used to perform range operations such as reading all the storage at once and/or deleting an account with a batch operation. Notably, parts of the API already supported this rooting concept while parts didn't - this PR makes the API consistent by always working with a root+vid.
118 lines
3.3 KiB
Nim
118 lines
3.3 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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## Rocks DB fetch data record
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## ==========================
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{.push raises: [].}
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import
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eth/common,
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rocksdb,
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results,
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stew/keyed_queue,
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../../[aristo_blobify, aristo_desc],
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../init_common,
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./rdb_desc
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const
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extraTraceMessages = false
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## Enable additional logging noise
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when extraTraceMessages:
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import
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chronicles
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logScope:
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topics = "aristo-rocksdb"
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# ------------------------------------------------------------------------------
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# Public functions
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# ------------------------------------------------------------------------------
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proc getAdm*(rdb: RdbInst; xid: AdminTabID): Result[Blob,(AristoError,string)] =
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var res: Blob
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let onData = proc(data: openArray[byte]) =
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res = @data
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let gotData = rdb.admCol.get(xid.toOpenArray, onData).valueOr:
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const errSym = RdbBeDriverGetAdmError
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when extraTraceMessages:
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trace logTxt "getAdm", xid, error=errSym, info=error
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return err((errSym,error))
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# Correct result if needed
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if not gotData:
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res = EmptyBlob
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ok move(res)
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proc getKey*(
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rdb: var RdbInst;
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rvid: RootedVertexID;
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): Result[HashKey,(AristoError,string)] =
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# Try LRU cache first
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var rc = rdb.rdKeyLru.lruFetch(rvid.vid)
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if rc.isOK:
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return ok(move(rc.value))
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# Otherwise fetch from backend database
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var res: Result[HashKey,(AristoError,string)]
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let onData = proc(data: openArray[byte]) =
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res = HashKey.fromBytes(data).mapErr(proc(): auto =
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(RdbHashKeyExpected,""))
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let gotData = rdb.keyCol.get(rvid.blobify().data(), onData).valueOr:
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const errSym = RdbBeDriverGetKeyError
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when extraTraceMessages:
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trace logTxt "getKey", rvid, error=errSym, info=error
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return err((errSym,error))
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# Correct result if needed
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if not gotData:
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res = ok(VOID_HASH_KEY)
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elif res.isErr():
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return res # Parsing failed
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# Update cache and return
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ok rdb.rdKeyLru.lruAppend(rvid.vid, res.value(), RdKeyLruMaxSize)
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proc getVtx*(
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rdb: var RdbInst;
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rvid: RootedVertexID;
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): Result[VertexRef,(AristoError,string)] =
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# Try LRU cache first
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var rc = rdb.rdVtxLru.lruFetch(rvid.vid)
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if rc.isOK:
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return ok(move(rc.value))
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# Otherwise fetch from backend database
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var res: Result[VertexRef,(AristoError,string)]
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let onData = proc(data: openArray[byte]) =
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res = data.deblobify(VertexRef).mapErr(proc(error: AristoError): auto =
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(error,""))
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let gotData = rdb.vtxCol.get(rvid.blobify().data(), onData).valueOr:
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const errSym = RdbBeDriverGetVtxError
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when extraTraceMessages:
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trace logTxt "getVtx", vid, error=errSym, info=error
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return err((errSym,error))
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if not gotData:
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res = ok(VertexRef(nil))
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elif res.isErr():
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return res # Parsing failed
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# Update cache and return
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ok rdb.rdVtxLru.lruAppend(rvid.vid, res.value(), RdVtxLruMaxSize)
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# ------------------------------------------------------------------------------
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# End
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# ------------------------------------------------------------------------------
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