mirror of
https://github.com/status-im/nimbus-eth1.git
synced 2025-02-06 09:13:46 +00:00
465d694834
* Rename FilterID => QueueID why: The current usage does not identify a particular filter but uses it as storage tag to manage it on the database (to be organised in a set of FIFOs or queues.) * Split `aristo_filter` source into sub-files why: Make space for filter management API * Store filter queue IDs in pairs on the backend why: Any pair will will describe a FIFO accessed by bottom/top IDs * Reorg some source file names why: The "aristo_" prefix for make local/private files is tedious to use, so removed. * Implement filter slot scheduler details: Filters will be stored on the database on cascaded FIFOs. When a FIFO queue is full, some filter items are bundled together and stored on the next FIFO.
44 lines
1.3 KiB
Nim
44 lines
1.3 KiB
Nim
# nimbus-eth1
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# Copyright (c) 2021 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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stew/results,
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"../.."/[aristo_constants, aristo_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,(AristoError,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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