mirror of
https://github.com/status-im/nimbus-eth1.git
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43e5f428af
* Update KVT layers abstraction
details:
modelled after Aristo layers
* Simplified KVT database iterators (removed item counters)
why:
Not needed for production functions
* Simplify KVT merge function `layersCc()`
* Simplified Aristo database iterators (removed item counters)
why:
Not needed for production functions
* Update failure condition for hash labels compiler `hashify()`
why:
Node need not be rejected as long as links are on the schedule. In
that case, `redo[]` is to become `wff.base[]` at a later stage.
* Update merging layers and label update functions
why:
+ Merging a stack of layers with `layersCc()` could be simplified
+ Merging layers will optimise the reverse `kMap[]` table maps
`pAmk: label->{vid, ..}` by deleting empty mappings `label->{}` where
they are redundant.
+ Updated `layersPutLabel()` for optimising `pAmk[]` tables
45 lines
1.5 KiB
Nim
45 lines
1.5 KiB
Nim
# Nimbus-eth1
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# Copyright (c) 2023 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
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# distributed except according to those terms.
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## Iterators for persistent backend of the Kvt DB
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## ==============================================
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##
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## This module automatically pulls in the persistent backend library at the
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## linking stage (e.g. `rocksdb`) which can be avoided for pure memory DB
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## applications by importing `./kvt_walk/memory_only` (rather than
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## `./kvt_walk/persistent`.)
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##
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import
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eth/common,
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../kvt_init/[rocks_db, persistent],
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../kvt_desc,
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"."/[memory_only, walk_private]
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export
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rocks_db,
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memory_only,
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persistent
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# ------------------------------------------------------------------------------
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# Public iterators (all in one)
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# ------------------------------------------------------------------------------
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iterator walkPairs*(
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T: type RdbBackendRef;
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db: KvtDbRef;
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): tuple[key: Blob, data: Blob] =
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## Iterate over backend filters.
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for (key,data) in walkPairsImpl[T](db):
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yield (key,data)
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# ------------------------------------------------------------------------------
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# End
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# ------------------------------------------------------------------------------
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