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https://github.com/status-im/nimbus-eth1.git
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5462c05dc6
* Fix copyright year * Show elapsed times with enabled `CoreDb` API tracking * Show elapsed times with enabled `LedgerRef` API tracking * Reorg `CoreDb` auto destructors for `Aristo` DB why: While `Aristo` supports some parallelism for concurrent database access, this comes with a price of management overhead. With a naive approach, the auto-destructor will slow down execution because the ledger and evm treat the database in a shared mode where a DB descriptor is just created and thrown away shortly after. This is reflected in the `Coredb` abstraction layer above `Aristo`/`Kvt` where a few `Shared` type descriptors are cached and a shared reference is returned rather than a disposable new object. * For `CoreDb` support transaction level tracking details: This is mainly an extra for the legacy DB as `Aristo` and `Kvt` support this already. Also return an error on the legacy DB backend when `persistent()` is called while there are transactions pending (the `persistent()` call does nothing otherwise on the legacy backend.) * Clear compiler warnings (remove unused variables etc.)
44 lines
1.2 KiB
Nim
44 lines
1.2 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 distributed
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# except according to those terms.
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## Rocks DB fetch data record
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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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rocksdb,
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results,
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"../.."/[kvt_constants, kvt_desc],
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./rdb_desc
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# ------------------------------------------------------------------------------
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# Public functions
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# ------------------------------------------------------------------------------
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proc get*(
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rdb: RdbInst;
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key: openArray[byte],
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): Result[Blob,(KvtError,string)] =
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var res: Blob
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let onData: DataProc = proc(data: openArray[byte]) =
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res = @data
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let rc = rdb.store.get(key, onData)
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if rc.isErr:
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return err((RdbBeDriverGetError,rc.error))
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if not rc.value:
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res = EmptyBlob
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ok res
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# ------------------------------------------------------------------------------
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# End
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# ------------------------------------------------------------------------------
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