63 lines
2.4 KiB
Nim
63 lines
2.4 KiB
Nim
# nimbus-eth1
|
|
# Copyright (c) 2023-2024 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.
|
|
|
|
## Aristo DB -- Transaction interface
|
|
## ==================================
|
|
##
|
|
{.push raises: [].}
|
|
|
|
import
|
|
results,
|
|
./aristo_tx/[tx_frame, tx_stow],
|
|
./aristo_desc
|
|
|
|
export tx_frame
|
|
|
|
# ------------------------------------------------------------------------------
|
|
# Public functions
|
|
# ------------------------------------------------------------------------------
|
|
|
|
func to*(tx: AristoTxRef; T: type[AristoDbRef]): T =
|
|
## Getter, retrieves the parent database descriptor from argument `tx`
|
|
tx.db
|
|
|
|
# ------------------------------------------------------------------------------
|
|
# Public functions: Transaction frame
|
|
# ------------------------------------------------------------------------------
|
|
|
|
# ------------------------------------------------------------------------------
|
|
# Public functions: save to database
|
|
# ------------------------------------------------------------------------------
|
|
|
|
proc persist*(
|
|
db: AristoDbRef; # Database
|
|
nxtSid = 0u64; # Next state ID (aka block number)
|
|
): Result[void,AristoError] =
|
|
## Persistently store data onto backend database. If the system is running
|
|
## without a database backend, the function returns immediately with an
|
|
## error. The same happens if there is a pending transaction.
|
|
##
|
|
## The function merges all staged data from the top layer cache onto the
|
|
## backend stage area. After that, the top layer cache is cleared.
|
|
##
|
|
## Finally, the staged data are merged into the physical backend database
|
|
## and the staged data area is cleared. Wile performing this last step,
|
|
## the recovery journal is updated (if available.)
|
|
##
|
|
## If the argument `nxtSid` is passed non-zero, it will be the ID for the
|
|
## next recovery journal record. If non-zero, this ID must be greater than
|
|
## all previous IDs (e.g. block number when stowing after block execution.)
|
|
##
|
|
db.txPersist(nxtSid)
|
|
|
|
# ------------------------------------------------------------------------------
|
|
# End
|
|
# ------------------------------------------------------------------------------
|