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https://github.com/status-im/nimbus-eth1.git
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221e6c9e2f
* Nimbus folder environment update details: * Integrated `CoreDbRef` for the sources in the `nimbus` sub-folder. * The `nimbus` program does not compile yet as it needs the updates in the parallel `stateless` sub-folder. * Stateless environment update details: * Integrated `CoreDbRef` for the sources in the `stateless` sub-folder. * The `nimbus` program compiles now. * Premix environment update details: * Integrated `CoreDbRef` for the sources in the `premix` sub-folder. * Fluffy environment update details: * Integrated `CoreDbRef` for the sources in the `fluffy` sub-folder. * Tools environment update details: * Integrated `CoreDbRef` for the sources in the `tools` sub-folder. * Nodocker environment update details: * Integrated `CoreDbRef` for the sources in the `hive_integration/nodocker` sub-folder. * Tests environment update details: * Integrated `CoreDbRef` for the sources in the `tests` sub-folder. * The unit tests compile and run cleanly now. * Generalise `CoreDbRef` to any `select_backend` supported database why: Generalisation was just missed due to overcoming some compiler oddity which was tied to rocksdb for testing. * Suppress compiler warning for `newChainDB()` why: Warning was added to this function which must be wrapped so that any `CatchableError` is re-raised as `Defect`. * Split off persistent `CoreDbRef` constructor into separate file why: This allows to compile a memory only database version without linking the backend library. * Use memory `CoreDbRef` database by default detail: Persistent DB constructor needs to import `db/core_db/persistent why: Most tests use memory DB anyway. This avoids linking `-lrocksdb` or any other backend by default. * fix `toLegacyBackend()` availability check why: got garbled after memory/persistent split. * Clarify raw access to MPT for snap sync handler why: Logically, `kvt` is not the raw access for the hexary trie (although this holds for the legacy database)
41 lines
1001 B
Nim
41 lines
1001 B
Nim
import eth/trie/db
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type
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CaptureFlags* {.pure.} = enum
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PersistPut
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PersistDel
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DB = TrieDatabaseRef
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CaptureDB* = ref object of RootObj
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srcDb: DB
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dstDb: DB
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flags: set[CaptureFlags]
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proc get*(db: CaptureDB, key: openArray[byte]): seq[byte] =
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result = db.dstDb.get(key)
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if result.len != 0: return
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result = db.srcDb.get(key)
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if result.len != 0:
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db.dstDb.put(key, result)
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proc put*(db: CaptureDB, key, value: openArray[byte]) =
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db.dstDb.put(key, value)
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if CaptureFlags.PersistPut in db.flags:
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db.srcDb.put(key, value)
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proc contains*(db: CaptureDB, key: openArray[byte]): bool =
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result = db.srcDb.contains(key)
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doAssert(db.dstDb.contains(key) == result)
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proc del*(db: CaptureDB, key: openArray[byte]) =
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db.dstDb.del(key)
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if CaptureFlags.PersistDel in db.flags:
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db.srcDb.del(key)
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proc newCaptureDB*(srcDb, dstDb: DB, flags: set[CaptureFlags] = {}): CaptureDB =
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result.new()
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result.srcDb = srcDb
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result.dstDb = dstDb
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result.flags = flags
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