113 lines
3.7 KiB
Nim
113 lines
3.7 KiB
Nim
# nimbus-eth1
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# Copyright (c) 2023-2024 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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{.push raises: [].}
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import
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std/[sets, tables],
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eth/common,
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results,
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stew/interval_set,
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../../aristo,
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../aristo_walk/persistent,
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".."/[aristo_desc, aristo_get, aristo_layers]
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# ------------------------------------------------------------------------------
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# Public functions
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# ------------------------------------------------------------------------------
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proc checkBE*[T: RdbBackendRef|MemBackendRef|VoidBackendRef](
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_: type T;
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db: AristoDbRef; # Database, top layer
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): Result[void,(VertexID,AristoError)] =
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## Make sure that each vertex has a Merkle hash and vice versa. Also check
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## the vertex ID generator state.
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var topVidBe: RootedVertexID = (VertexID(0), VertexID(0))
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for (rvid,vtx) in T.walkVtxBe db:
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if topVidBe.vid < rvid.vid:
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topVidBe = rvid
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if not vtx.isValid:
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return err((rvid.vid,CheckBeVtxInvalid))
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case vtx.vType:
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of Leaf:
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discard
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of Branch:
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block check42Links:
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var seen = false
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for _, _ in vtx.pairs():
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if seen:
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break check42Links
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seen = true
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return err((rvid.vid,CheckBeVtxBranchLinksMissing))
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for (rvid,key) in T.walkKeyBe db:
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if topVidBe.vid < rvid.vid:
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topVidBe = rvid
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let _ = db.getVtxBE(rvid).valueOr:
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return err((rvid.vid,CheckBeVtxMissing))
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# Compare calculated `vTop` against database state
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# TODO
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# if topVidBe.isValid:
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# let vidTuvBe = block:
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# let rc = db.getTuvBE()
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# if rc.isOk:
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# rc.value
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# elif rc.error == GetTuvNotFound:
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# VertexID(0)
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# else:
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# return err((VertexID(0),rc.error))
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# if vidTuvBe != topVidBe:
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# # All vertices and keys between `topVidBe` and `vidTuvBe` must have
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# # been deleted.
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# for vid in max(topVidBe + 1, VertexID(LEAST_FREE_VID)) .. vidTuvBe:
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# if db.getVtxBE(vid).isOk or db.getKeyBE(vid).isOk:
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# return err((vid,CheckBeGarbledVTop))
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# Check layer cache against backend
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block:
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var topVidCache: RootedVertexID = (VertexID(0), VertexID(0))
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# Check structural table
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for (rvid,vtx) in db.layersWalkVtx:
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if vtx.isValid and topVidCache.vid < rvid.vid:
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topVidCache = rvid
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let (key, _) = db.layersGetKey(rvid).valueOr: (VOID_HASH_KEY, 0)
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if not vtx.isValid:
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# Some vertex is to be deleted, the key must be empty
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if key.isValid:
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return err((rvid.vid,CheckBeCacheKeyNonEmpty))
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# Check key table
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var list: seq[RootedVertexID]
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for (rvid,key) in db.layersWalkKey:
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if key.isValid and topVidCache.vid < rvid.vid:
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topVidCache = rvid
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list.add rvid
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let vtx = db.getVtx rvid
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if db.layersGetVtx(rvid).isErr and not vtx.isValid:
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return err((rvid.vid,CheckBeCacheKeyDangling))
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# Check vTop
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# TODO
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# if topVidCache.isValid and topVidCache != db.vTop:
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# # All vertices and keys between `topVidCache` and `db.vTop` must have
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# # been deleted.
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# for vid in max(db.vTop + 1, VertexID(LEAST_FREE_VID)) .. topVidCache:
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# if db.layersGetVtxOrVoid(vid).isValid or
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# db.layersGetKeyOrVoid(vid).isValid:
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# return err((db.vTop,CheckBeCacheGarbledVTop))
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ok()
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# ------------------------------------------------------------------------------
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# End
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# ------------------------------------------------------------------------------
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