422 lines
15 KiB
Nim
422 lines
15 KiB
Nim
# beacon_chain
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# Copyright (c) 2018-2022 Status Research & Development GmbH
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# Licensed and distributed under either of
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# * MIT license (license terms in the root directory or at https://opensource.org/licenses/MIT).
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# * Apache v2 license (license terms in the root directory or at https://www.apache.org/licenses/LICENSE-2.0).
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# at your option. This file may not be copied, modified, or distributed except according to those terms.
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{.used.}
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import
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# Standard library
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std/[json, os, sequtils, strutils, tables],
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# Status libraries
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stew/results, chronicles,
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eth/keys, taskpools,
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# Internals
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../../beacon_chain/spec/[helpers, forks, state_transition_block],
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../../beacon_chain/spec/datatypes/[
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base,
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phase0, altair, bellatrix],
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../../beacon_chain/fork_choice/[fork_choice, fork_choice_types],
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../../beacon_chain/[beacon_chain_db, beacon_clock],
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../../beacon_chain/consensus_object_pools/[
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blockchain_dag, block_clearance, block_quarantine, spec_cache],
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# Third-party
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yaml,
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# Test
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../testutil, ../testdbutil,
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./fixtures_utils
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# Test format described at https://github.com/ethereum/consensus-specs/tree/v1.2.0-rc.1/tests/formats/fork_choice
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# Note that our implementation has been optimized with "ProtoArray"
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# instead of following the spec (in particular the "store").
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type
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OpKind = enum
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opOnTick
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opOnAttestation
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opOnBlock
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opOnMergeBlock
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opOnAttesterSlashing
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opInvalidateRoot
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opChecks
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Operation = object
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valid: bool
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# variant specific fields
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case kind: OpKind
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of opOnTick:
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tick: int
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of opOnAttestation:
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att: Attestation
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of opOnBlock:
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blck: ForkedSignedBeaconBlock
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of opOnMergeBlock:
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powBlock: PowBlock
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of opOnAttesterSlashing:
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attesterSlashing: AttesterSlashing
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of opInvalidateRoot:
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invalidatedRoot: Eth2Digest
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latestValidHash: Eth2Digest
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of opChecks:
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checks: JsonNode
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from ../../beacon_chain/spec/datatypes/capella import
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BeaconBlock, BeaconState, SignedBeaconBlock
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proc initialLoad(
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path: string, db: BeaconChainDB,
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StateType, BlockType: typedesc
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): tuple[dag: ChainDAGRef, fkChoice: ref ForkChoice] =
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let
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forkedState = loadForkedState(
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path/"anchor_state.ssz_snappy",
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StateType.toFork)
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blck = parseTest(
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path/"anchor_block.ssz_snappy",
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SSZ, BlockType)
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when BlockType is capella.BeaconBlock:
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let signedBlock = ForkedSignedBeaconBlock.init(capella.SignedBeaconBlock(
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message: blck,
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# signature: - unused as it's trusted
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root: hash_tree_root(blck)
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))
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elif BlockType is bellatrix.BeaconBlock:
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let signedBlock = ForkedSignedBeaconBlock.init(bellatrix.SignedBeaconBlock(
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message: blck,
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# signature: - unused as it's trusted
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root: hash_tree_root(blck)
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))
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elif BlockType is altair.BeaconBlock:
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let signedBlock = ForkedSignedBeaconBlock.init(altair.SignedBeaconBlock(
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message: blck,
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# signature: - unused as it's trusted
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root: hash_tree_root(blck)
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))
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elif BlockType is phase0.BeaconBlock:
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let signedBlock = ForkedSignedBeaconBlock.init(phase0.SignedBeaconBlock(
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message: blck,
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# signature: - unused as it's trusted
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root: hash_tree_root(blck)
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))
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else: {.error: "Unknown block fork: " & name(BlockType).}
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ChainDAGRef.preInit(db, forkedState[])
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let
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validatorMonitor = newClone(ValidatorMonitor.init())
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dag = ChainDAGRef.init(
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forkedState[].kind.genesisTestRuntimeConfig, db, validatorMonitor, {})
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fkChoice = newClone(ForkChoice.init(
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dag.getFinalizedEpochRef(),
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dag.finalizedHead.blck,
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))
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(dag, fkChoice)
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proc loadOps(path: string, fork: BeaconStateFork): seq[Operation] =
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let stepsYAML = readFile(path/"steps.yaml")
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let steps = yaml.loadToJson(stepsYAML)
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result = @[]
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for step in steps[0]:
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if step.hasKey"tick":
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result.add Operation(kind: opOnTick,
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tick: step["tick"].getInt())
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elif step.hasKey"attestation":
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let filename = step["attestation"].getStr()
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let att = parseTest(
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path/filename & ".ssz_snappy",
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SSZ, Attestation
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)
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result.add Operation(kind: opOnAttestation,
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att: att)
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elif step.hasKey"block":
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let filename = step["block"].getStr()
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case fork
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of BeaconStateFork.Phase0:
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let blck = parseTest(
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path/filename & ".ssz_snappy",
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SSZ, phase0.SignedBeaconBlock
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)
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result.add Operation(kind: opOnBlock,
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blck: ForkedSignedBeaconBlock.init(blck))
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of BeaconStateFork.Altair:
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let blck = parseTest(
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path/filename & ".ssz_snappy",
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SSZ, altair.SignedBeaconBlock
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)
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result.add Operation(kind: opOnBlock,
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blck: ForkedSignedBeaconBlock.init(blck))
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of BeaconStateFork.Bellatrix:
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let blck = parseTest(
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path/filename & ".ssz_snappy",
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SSZ, bellatrix.SignedBeaconBlock
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)
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result.add Operation(kind: opOnBlock,
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blck: ForkedSignedBeaconBlock.init(blck))
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of BeaconStateFork.Capella:
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let blck = parseTest(
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path/filename & ".ssz_snappy",
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SSZ, capella.SignedBeaconBlock
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)
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result.add Operation(kind: opOnBlock,
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blck: ForkedSignedBeaconBlock.init(blck))
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of BeaconStateFork.EIP4844:
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raiseAssert $eip4844ImplementationMissing & ": test_fixture_fork_choice.nim:loadOps"
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elif step.hasKey"attester_slashing":
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let filename = step["attester_slashing"].getStr()
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let attesterSlashing = parseTest(
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path/filename & ".ssz_snappy",
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SSZ, AttesterSlashing
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)
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result.add Operation(kind: opOnAttesterSlashing,
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attesterSlashing: attesterSlashing)
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elif step.hasKey"payload_status":
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if step["payload_status"]["status"].getStr() == "INVALID":
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result.add Operation(kind: opInvalidateRoot,
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valid: true,
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invalidatedRoot: Eth2Digest.fromHex(step["block_hash"].getStr()),
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latestValidHash: Eth2Digest.fromHex(
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step["payload_status"]["latest_valid_hash"].getStr()))
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elif step.hasKey"checks":
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result.add Operation(kind: opChecks,
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checks: step["checks"])
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else:
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doAssert false, "Unknown test step: " & $step
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if step.hasKey"valid":
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doAssert step.len == 2
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result[^1].valid = step["valid"].getBool()
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elif not step.hasKey"checks" and not step.hasKey"payload_status":
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doAssert step.len == 1
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result[^1].valid = true
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proc stepOnBlock(
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dag: ChainDAGRef,
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fkChoice: ref ForkChoice,
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verifier: var BatchVerifier,
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state: var ForkedHashedBeaconState,
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stateCache: var StateCache,
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signedBlock: ForkySignedBeaconBlock,
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time: BeaconTime,
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invalidatedRoots: Table[Eth2Digest, Eth2Digest]):
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Result[BlockRef, VerifierError] =
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# 1. Move state to proper slot.
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doAssert dag.updateState(
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state,
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dag.getBlockIdAtSlot(time.slotOrZero).expect("block exists"),
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save = false,
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stateCache
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)
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# 2. Add block to DAG
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when signedBlock is phase0.SignedBeaconBlock:
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type TrustedBlock = phase0.TrustedSignedBeaconBlock
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elif signedBlock is altair.SignedBeaconBlock:
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type TrustedBlock = altair.TrustedSignedBeaconBlock
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elif signedBlock is bellatrix.SignedBeaconBlock:
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type TrustedBlock = bellatrix.TrustedSignedBeaconBlock
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elif signedBlock is capella.SignedBeaconBlock:
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type TrustedBlock = capella.TrustedSignedBeaconBlock
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else:
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doAssert false, "Unknown TrustedSignedBeaconBlock fork"
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# In normal Nimbus flow, for this (effectively) newPayload-based INVALID, it
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# is checked even before entering the DAG, by the block processor. Currently
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# the optimistic sync test(s) don't include a later-fcU-INVALID case. Whilst
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# this wouldn't be part of this check, presumably, their FC test vector step
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# would also have `true` validity because it'd not be known they weren't, so
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# adding this mock of the block processor is realistic and sufficient.
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when not (
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signedBlock is phase0.SignedBeaconBlock or
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signedBlock is altair.SignedBeaconBlock):
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let executionPayloadHash =
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signedBlock.message.body.execution_payload.block_hash
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if executionPayloadHash in invalidatedRoots:
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# Mocks fork choice INVALID list application. These tests sequence this
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# in a way the block processor does not, specifying each payload_status
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# before the block itself, while Nimbus fork choice treats invalidating
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# a non-existent block root as a no-op and does not remember it for the
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# future.
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let lvh = invalidatedRoots.getOrDefault(
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executionPayloadHash, static(default(Eth2Digest)))
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fkChoice[].mark_root_invalid(dag.getEarliestInvalidBlockRoot(
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signedBlock.message.parent_root, lvh, executionPayloadHash))
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return err VerifierError.Invalid
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let blockAdded = dag.addHeadBlock(verifier, signedBlock) do (
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blckRef: BlockRef, signedBlock: TrustedBlock,
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epochRef: EpochRef, unrealized: FinalityCheckpoints):
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# 3. Update fork choice if valid
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let status = fkChoice[].process_block(
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dag, epochRef, blckRef, unrealized, signedBlock.message, time)
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doAssert status.isOk()
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# 4. Update DAG with new head
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var quarantine = Quarantine.init()
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let newHead = fkChoice[].get_head(dag, time).get()
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dag.updateHead(dag.getBlockRef(newHead).get(), quarantine)
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if dag.needStateCachesAndForkChoicePruning():
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dag.pruneStateCachesDAG()
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let pruneRes = fkChoice[].prune()
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doAssert pruneRes.isOk()
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blockAdded
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proc stepChecks(
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checks: JsonNode,
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dag: ChainDAGRef,
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fkChoice: ref ForkChoice,
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time: BeaconTime
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) =
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doAssert checks.len >= 1, "No checks found"
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for check, val in checks:
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if check == "time":
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doAssert time.ns_since_genesis == val.getInt().seconds.nanoseconds()
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doAssert fkChoice.checkpoints.time.slotOrZero == time.slotOrZero
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elif check == "head":
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let headRoot = fkChoice[].get_head(dag, time).get()
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let headRef = dag.getBlockRef(headRoot).get()
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doAssert headRef.slot == Slot(val["slot"].getInt())
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doAssert headRef.root == Eth2Digest.fromHex(val["root"].getStr())
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elif check == "justified_checkpoint":
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let checkpointRoot = fkChoice.checkpoints.justified.checkpoint.root
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let checkpointEpoch = fkChoice.checkpoints.justified.checkpoint.epoch
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doAssert checkpointEpoch == Epoch(val["epoch"].getInt())
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doAssert checkpointRoot == Eth2Digest.fromHex(val["root"].getStr())
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elif check == "justified_checkpoint_root": # undocumented check
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let checkpointRoot = fkChoice.checkpoints.justified.checkpoint.root
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doAssert checkpointRoot == Eth2Digest.fromHex(val.getStr())
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elif check == "finalized_checkpoint":
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let checkpointRoot = fkChoice.checkpoints.finalized.root
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let checkpointEpoch = fkChoice.checkpoints.finalized.epoch
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doAssert checkpointEpoch == Epoch(val["epoch"].getInt())
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doAssert checkpointRoot == Eth2Digest.fromHex(val["root"].getStr())
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elif check == "best_justified_checkpoint":
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let checkpointRoot = fkChoice.checkpoints.best_justified.root
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let checkpointEpoch = fkChoice.checkpoints.best_justified.epoch
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doAssert checkpointEpoch == Epoch(val["epoch"].getInt())
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doAssert checkpointRoot == Eth2Digest.fromHex(val["root"].getStr())
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elif check == "proposer_boost_root":
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doAssert fkChoice.checkpoints.proposer_boost_root ==
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Eth2Digest.fromHex(val.getStr())
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elif check == "genesis_time":
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# We do not store genesis in fork choice..
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discard
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else:
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doAssert false, "Unsupported check '" & $check & "'"
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proc doRunTest(path: string, fork: BeaconStateFork) =
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let db = BeaconChainDB.new("", inMemory = true)
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defer:
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db.close()
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let stores =
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case fork
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of BeaconStateFork.EIP4844:
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raiseAssert $eip4844ImplementationMissing & ": test_fixture_fork_choice.nim:doRunTest"
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of BeaconStateFork.Capella:
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initialLoad(path, db, capella.BeaconState, capella.BeaconBlock)
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of BeaconStateFork.Bellatrix:
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initialLoad(path, db, bellatrix.BeaconState, bellatrix.BeaconBlock)
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of BeaconStateFork.Altair:
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initialLoad(path, db, altair.BeaconState, altair.BeaconBlock)
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of BeaconStateFork.Phase0:
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initialLoad(path, db, phase0.BeaconState, phase0.BeaconBlock)
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var
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taskpool = Taskpool.new()
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verifier = BatchVerifier(rng: keys.newRng(), taskpool: taskpool)
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let steps = loadOps(path, fork)
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var time = stores.fkChoice.checkpoints.time
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var invalidatedRoots: Table[Eth2Digest, Eth2Digest]
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let state = newClone(stores.dag.headState)
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var stateCache = StateCache()
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for step in steps:
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case step.kind
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of opOnTick:
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time = BeaconTime(ns_since_genesis: step.tick.seconds.nanoseconds)
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let status = stores.fkChoice[].update_time(stores.dag, time)
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doAssert status.isOk == step.valid
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of opOnAttestation:
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let status = stores.fkChoice[].on_attestation(
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stores.dag, step.att.data.slot, step.att.data.beacon_block_root,
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toSeq(stores.dag.get_attesting_indices(step.att.asTrusted)), time)
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doAssert status.isOk == step.valid
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of opOnBlock:
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withBlck(step.blck):
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let status = stepOnBlock(
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stores.dag, stores.fkChoice,
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verifier, state[], stateCache,
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blck, time, invalidatedRoots)
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doAssert status.isOk == step.valid
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of opOnAttesterSlashing:
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let indices =
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check_attester_slashing(state[], step.attesterSlashing, flags = {})
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if indices.isOk:
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for idx in indices.get:
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stores.fkChoice[].process_equivocation(idx)
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doAssert indices.isOk == step.valid
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of opInvalidateRoot:
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invalidatedRoots[step.invalidatedRoot] = step.latestValidHash
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of opChecks:
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stepChecks(step.checks, stores.dag, stores.fkChoice, time)
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else:
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doAssert false, "Unsupported"
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proc runTest(testType: static[string], path: string, fork: BeaconStateFork) =
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const SKIP = [
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# protoArray can handle blocks in the future gracefully
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# spec: https://github.com/ethereum/consensus-specs/blame/v1.1.3/specs/phase0/fork-choice.md#L349
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# test: tests/fork_choice/scenarios/no_votes.nim
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# "Ensure the head is still 4 whilst the justified epoch is 0."
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"on_block_future_block",
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# TODO on_merge_block
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"too_early_for_merge",
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"too_late_for_merge",
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"block_lookup_failed",
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"all_valid",
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]
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test testType & " - " & path.relativePath(SszTestsDir):
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when defined(windows):
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# Some test files have very long paths
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skip()
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else:
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if os.splitPath(path).tail in SKIP:
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skip()
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else:
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doRunTest(path, fork)
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template fcSuite(suiteName: static[string], testPathElem: static[string]) =
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suite "EF - " & suiteName & preset():
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const presetPath = SszTestsDir/const_preset
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for kind, path in walkDir(presetPath, relative = true, checkDir = true):
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let testsPath = presetPath/path/testPathElem
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if kind != pcDir or not dirExists(testsPath):
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continue
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if path.contains("eip4844"):
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continue
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let fork = forkForPathComponent(path).valueOr:
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raiseAssert "Unknown test fork: " & testsPath
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for kind, path in walkDir(testsPath, relative = true, checkDir = true):
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let basePath = testsPath/path/"pyspec_tests"
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if kind != pcDir:
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continue
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for kind, path in walkDir(basePath, relative = true, checkDir = true):
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runTest(suiteName, basePath/path, fork)
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fcSuite("ForkChoice", "fork_choice")
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fcSuite("Sync", "sync")
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