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* Explicitly use shared `Kvt` table on `Ledger` and `Clique` lookup.
why:
Speeds up lookup time with `Aristo` backend. For writing `Clique` data,
the `Companion` model allows to write `Clique` data past the database
locked by evm transactions.
* Implement `CoreDb` profiling with API tracking
why:
Chasing time spent per APT procs ...
* Implement `Ledger` profiling with API tracking
why:
Chasing time spent per APT procs ...
* Always hashify when commiting or storing
why:
A dirty cache makes no sense when committing
* Make sure that a zero key is created when adding/updating vertices
why:
This is an error fix mainly for edge cases. A typical error was
that the root key got deleted when there were only a few vertices
left on the DB.
* Need all created and changed vertices zero-keyed on the cache
why:
A zero key (i.e. empty Merkle hash) indicates that a vertex key
needs to be updated. This would not be needed immediately after
a merge as there is an actual leaf path on the cache layer. But
after subsequent merge and delete operations this information
might get blurred.
* Re-org hashing algorithm
why:
Apart from errors, the previous implementation was too slow for
two reasons:
+ some control hashes were calculated for debugging (now all
verification is done in `aristo_check` module)
+ the leaf paths stored on the cache are used to build the
labelling (aka hashing) schedule; there paths were accumulated
over successive hash sessions although it is clear that all
keys were generated, already
64 lines
1.8 KiB
Nim
64 lines
1.8 KiB
Nim
# Nimbus
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# Copyright (c) 2018 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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## Unifies different ledger management APIs. All ledger objects are
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## derived from the base objects
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## ::
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## LedgerRef => AccountsCache, overloaded AccountsCache, etc.
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## LedgerSpRef => SavePoint, overloaded SavePoint etc
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##
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## In order to directly use `AccountsCache` it must be imported via
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## `import db/ledger/accounts_cache`. In this case, there is no `LedgerRef`.
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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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./core_db,
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./ledger/backend/[
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accounts_cache, accounts_cache_desc,
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accounts_ledger, accounts_ledger_desc],
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./ledger/base_iterators
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import
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./ledger/base except LedgerApiTxt, beginTrackApi, bless, ifTrackApi
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export
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AccountsCache,
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AccountsLedgerRef,
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LedgerType,
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base,
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base_iterators,
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init
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# ------------------------------------------------------------------------------
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# Public constructor
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# ------------------------------------------------------------------------------
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proc init*(
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ldgType: LedgerType;
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db: CoreDbRef;
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root: Hash256;
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pruneTrie: bool;
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): LedgerRef =
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case ldgType:
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of LegacyAccountsCache:
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result = AccountsCache.init(db, root, pruneTrie)
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of LedgerCache:
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result = AccountsLedgerRef.init(db, root, pruneTrie)
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else:
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raiseAssert: "Missing ledger type label"
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# ------------------------------------------------------------------------------
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# End
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# ------------------------------------------------------------------------------
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