nimbus-eth1/nimbus/db/kvt/kvt_init/init_common.nim

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# nimbus-eth1
# Copyright (c) 2021 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.
{.push raises: [].}
import
../../aristo/aristo_init/init_common,
../kvt_desc,
../kvt_desc/desc_backend
export
BackendType # borrowed from Aristo
const
verifyIxId = true # and false
## Enforce session tracking
type
TypedBackendRef* = ref object of BackendRef
beKind*: BackendType ## Backend type identifier
when verifyIxId:
txGen: uint ## Transaction ID generator (for debugging)
txId: uint ## Active transaction ID (for debugging)
TypedPutHdlRef* = ref object of PutHdlRef
error*: KvtError ## Track error while collecting transaction
when verifyIxId:
txId: uint ## Transaction ID (for debugging)
# ------------------------------------------------------------------------------
# Public helpers
# ------------------------------------------------------------------------------
proc beginSession*(hdl: TypedPutHdlRef; db: TypedBackendRef) =
when verifyIxId:
doAssert db.txId == 0
if db.txGen == 0:
db.txGen = 1
db.txId = db.txGen
hdl.txId = db.txGen
db.txGen.inc
proc verifySession*(hdl: TypedPutHdlRef; db: TypedBackendRef) =
when verifyIxId:
doAssert db.txId == hdl.txId
proc finishSession*(hdl: TypedPutHdlRef; db: TypedBackendRef) =
when verifyIxId:
doAssert db.txId == hdl.txId
db.txId = 0
# ------------------------------------------------------------------------------
# End
# ------------------------------------------------------------------------------