nimbus-eth1/nimbus/db/kvt/kvt_api.nim

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Nim

# nimbus-eth1
# Copyright (c) 2024 Status Research & Development GmbH
# Licensed under either of
# * Apache License, version 2.0, ([LICENSE-APACHE](LICENSE-APACHE) or
# http://www.apache.org/licenses/LICENSE-2.0)
# * MIT license ([LICENSE-MIT](LICENSE-MIT) or
# http://opensource.org/licenses/MIT)
# at your option. This file may not be copied, modified, or distributed
# except according to those terms.
## Stackable API for `Kvt`
## =======================
import
std/times,
results,
../aristo/aristo_profile,
./kvt_desc/desc_backend,
./kvt_init/memory_db,
"."/[kvt_desc, kvt_init, kvt_tx, kvt_utils]
const
AutoValidateApiHooks = defined(release).not
## No validatinon needed for production suite.
KvtPersistentBackendOk = AutoValidateApiHooks # and false
## Set true for persistent backend profiling (which needs an extra
## link library.)
when KvtPersistentBackendOk:
import ./kvt_init/rocks_db
# Annotation helper(s)
{.pragma: noRaise, gcsafe, raises: [].}
type
KvtDbProfListRef* = AristoDbProfListRef
## Borrowed from `aristo_profile`
KvtDbProfData* = AristoDbProfData
## Borrowed from `aristo_profile`
KvtApiCommitFn* = proc(tx: KvtTxRef): Result[void,KvtError] {.noRaise.}
KvtApiDelFn* = proc(db: KvtDbRef,
key: openArray[byte]): Result[void,KvtError] {.noRaise.}
KvtApiFinishFn* = proc(db: KvtDbRef, eradicate = false) {.noRaise.}
KvtApiForgetFn* = proc(db: KvtDbRef): Result[void,KvtError] {.noRaise.}
KvtApiGetFn* = proc(db: KvtDbRef,
key: openArray[byte]): Result[seq[byte],KvtError] {.noRaise.}
KvtApiLenFn* = proc(db: KvtDbRef,
key: openArray[byte]): Result[int,KvtError] {.noRaise.}
KvtApiHasKeyRcFn* = proc(db: KvtDbRef,
key: openArray[byte]): Result[bool,KvtError] {.noRaise.}
KvtApiIsTopFn* = proc(tx: KvtTxRef): bool {.noRaise.}
KvtApiTxFrameLevelFn* = proc(db: KvtDbRef): int {.noRaise.}
KvtApiPutFn* = proc(db: KvtDbRef,
key, data: openArray[byte]): Result[void,KvtError] {.noRaise.}
KvtApiRollbackFn* = proc(tx: KvtTxRef): Result[void,KvtError] {.noRaise.}
KvtApiPersistFn* = proc(db: KvtDbRef): Result[void,KvtError] {.noRaise.}
KvtApiToKvtDbRefFn* = proc(tx: KvtTxRef): KvtDbRef {.noRaise.}
KvtApiTxFrameBeginFn* = proc(db: KvtDbRef): Result[KvtTxRef,KvtError] {.noRaise.}
KvtApiTxFrameTopFn* =
proc(db: KvtDbRef): Result[KvtTxRef,KvtError] {.noRaise.}
KvtApiRef* = ref KvtApiObj
KvtApiObj* = object of RootObj
## Useful set of `Kvt` fuctions that can be filtered, stacked etc. Note
## that this API is modelled after a subset of the `Aristo` API.
commit*: KvtApiCommitFn
del*: KvtApiDelFn
finish*: KvtApiFinishFn
get*: KvtApiGetFn
len*: KvtApiLenFn
hasKeyRc*: KvtApiHasKeyRcFn
isTop*: KvtApiIsTopFn
txFrameLevel*: KvtApiTxFrameLevelFn
put*: KvtApiPutFn
rollback*: KvtApiRollbackFn
persist*: KvtApiPersistFn
toKvtDbRef*: KvtApiToKvtDbRefFn
txFrameBegin*: KvtApiTxFrameBeginFn
txFrameTop*: KvtApiTxFrameTopFn
KvtApiProfNames* = enum
## index/name mapping for profile slots
KvtApiProfTotal = "total"
KvtApiProfCommitFn = "commit"
KvtApiProfDelFn = "del"
KvtApiProfFinishFn = "finish"
KvtApiProfGetFn = "get"
KvtApiProfLenFn = "len"
KvtApiProfHasKeyRcFn = "hasKeyRc"
KvtApiProfIsTopFn = "isTop"
KvtApiProfLevelFn = "level"
KvtApiProfPutFn = "put"
KvtApiProfRollbackFn = "rollback"
KvtApiProfPersistFn = "persist"
KvtApiProfToKvtDbRefFn = "toKvtDbRef"
KvtApiProfTxFrameBeginFn = "txFrameBegin"
KvtApiProfTxFrameTopFn = "txFrameTop"
KvtApiProfBeGetKvpFn = "be/getKvp"
KvtApiProfBeLenKvpFn = "be/lenKvp"
KvtApiProfBePutKvpFn = "be/putKvp"
KvtApiProfBePutEndFn = "be/putEnd"
KvtApiProfRef* = ref object of KvtApiRef
## Profiling API extension of `KvtApiObj`
data*: KvtDbProfListRef
be*: BackendRef
# ------------------------------------------------------------------------------
# Private helpers
# ------------------------------------------------------------------------------
when AutoValidateApiHooks:
proc validate(api: KvtApiObj|KvtApiRef) =
doAssert not api.commit.isNil
doAssert not api.del.isNil
doAssert not api.finish.isNil
doAssert not api.get.isNil
doAssert not api.hasKeyRc.isNil
doAssert not api.isTop.isNil
doAssert not api.txFrameLevel.isNil
doAssert not api.put.isNil
doAssert not api.rollback.isNil
doAssert not api.persist.isNil
doAssert not api.toKvtDbRef.isNil
doAssert not api.txFrameBegin.isNil
doAssert not api.txFrameTop.isNil
proc validate(prf: KvtApiProfRef) =
prf.KvtApiRef.validate
doAssert not prf.data.isNil
proc dup(be: BackendRef): BackendRef =
case be.kind:
of BackendMemory:
return MemBackendRef(be).dup
of BackendRocksDB, BackendRdbTriggered:
when KvtPersistentBackendOk:
return RdbBackendRef(be).dup
of BackendVoid:
discard
# ------------------------------------------------------------------------------
# Public API constuctors
# ------------------------------------------------------------------------------
func init*(api: var KvtApiObj) =
when AutoValidateApiHooks:
api.reset
api.commit = commit
api.del = del
api.finish = finish
api.get = get
api.len = len
api.hasKeyRc = hasKeyRc
api.isTop = isTop
api.txFrameLevel = txFrameLevel
api.put = put
api.rollback = rollback
api.persist = persist
api.toKvtDbRef = toKvtDbRef
api.txFrameBegin = txFrameBegin
api.txFrameTop = txFrameTop
when AutoValidateApiHooks:
api.validate
func init*(T: type KvtApiRef): T =
result = new T
result[].init()
func dup*(api: KvtApiRef): KvtApiRef =
result = KvtApiRef(
commit: api.commit,
del: api.del,
finish: api.finish,
get: api.get,
len: api.len,
hasKeyRc: api.hasKeyRc,
isTop: api.isTop,
txFrameLevel: api.txFrameLevel,
put: api.put,
rollback: api.rollback,
persist: api.persist,
toKvtDbRef: api.toKvtDbRef,
txFrameBegin: api.txFrameBegin,
txFrameTop: api.txFrameTop)
when AutoValidateApiHooks:
result.validate
# ------------------------------------------------------------------------------
# Public profile API constuctor
# ------------------------------------------------------------------------------
func init*(
T: type KvtApiProfRef;
api: KvtApiRef;
be = BackendRef(nil);
): T =
## This constructor creates a profiling API descriptor to be derived from
## an initialised `api` argument descriptor. For profiling the DB backend,
## the field `.be` of the result descriptor must be assigned to the
## `.backend` field of the `KvtDbRef` descriptor.
##
## The argument desctiptors `api` and `be` will not be modified and can be
## used to restore the previous set up.
##
let
data = KvtDbProfListRef(
list: newSeq[KvtDbProfData](1 + high(KvtApiProfNames).ord))
profApi = T(data: data)
template profileRunner(n: KvtApiProfNames, code: untyped): untyped =
let start = getTime()
code
data.update(n.ord, getTime() - start)
profApi.commit =
proc(a: KvtTxRef): auto =
KvtApiProfCommitFn.profileRunner:
result = api.commit(a)
profApi.del =
proc(a: KvtDbRef; b: openArray[byte]): auto =
KvtApiProfDelFn.profileRunner:
result = api.del(a, b)
profApi.finish =
proc(a: KvtDbRef; b = false) =
KvtApiProfFinishFn.profileRunner:
api.finish(a, b)
profApi.get =
proc(a: KvtDbRef, b: openArray[byte]): auto =
KvtApiProfGetFn.profileRunner:
result = api.get(a, b)
profApi.len =
proc(a: KvtDbRef, b: openArray[byte]): auto =
KvtApiProfLenFn.profileRunner:
result = api.len(a, b)
profApi.hasKeyRc =
proc(a: KvtDbRef, b: openArray[byte]): auto =
KvtApiProfHasKeyRcFn.profileRunner:
result = api.hasKeyRc(a, b)
profApi.isTop =
proc(a: KvtTxRef): auto =
KvtApiProfIsTopFn.profileRunner:
result = api.isTop(a)
profApi.level =
proc(a: KvtDbRef): auto =
KvtApiProfLevelFn.profileRunner:
result = api.level(a)
profApi.put =
proc(a: KvtDbRef; b, c: openArray[byte]): auto =
KvtApiProfPutFn.profileRunner:
result = api.put(a, b, c)
profApi.rollback =
proc(a: KvtTxRef): auto =
KvtApiProfRollbackFn.profileRunner:
result = api.rollback(a)
profApi.persist =
proc(a: KvtDbRef): auto =
KvtApiProfPersistFn.profileRunner:
result = api.persist(a)
profApi.toKvtDbRef =
proc(a: KvtTxRef): auto =
KvtApiProfToKvtDbRefFn.profileRunner:
result = api.toKvtDbRef(a)
profApi.txFrameBegin =
proc(a: KvtDbRef): auto =
KvtApiProfTxFrameBeginFn.profileRunner:
result = api.txFrameBegin(a)
profApi.txFrameTop =
proc(a: KvtDbRef): auto =
KvtApiProfTxFrameTopFn.profileRunner:
result = api.txFrameTop(a)
let beDup = be.dup()
if beDup.isNil:
profApi.be = be
else:
beDup.getKvpFn =
proc(a: openArray[byte]): auto =
KvtApiProfBeGetKvpFn.profileRunner:
result = be.getKvpFn(a)
data.list[KvtApiProfBeGetKvpFn.ord].masked = true
beDup.lenKvpFn =
proc(a: openArray[byte]): auto =
KvtApiProfBeLenKvpFn.profileRunner:
result = be.lenKvpFn(a)
data.list[KvtApiProfBeLenKvpFn.ord].masked = true
beDup.putKvpFn =
proc(a: PutHdlRef; b, c: openArray[byte]) =
KvtApiProfBePutKvpFn.profileRunner:
be.putKvpFn(a, b, c)
data.list[KvtApiProfBePutKvpFn.ord].masked = true
beDup.putEndFn =
proc(a: PutHdlRef): auto =
KvtApiProfBePutEndFn.profileRunner:
result = be.putEndFn(a)
data.list[KvtApiProfBePutEndFn.ord].masked = true
profApi.be = beDup
when AutoValidateApiHooks:
profApi.validate
profApi
# ------------------------------------------------------------------------------
# End
# ------------------------------------------------------------------------------