587 lines
20 KiB
Nim
587 lines
20 KiB
Nim
import presto, presto/client as presto_client,
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libp2p/peerid,
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stew/[base10, byteutils],
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faststreams/[outputs],
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serialization, json_serialization,
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nimcrypto/utils as ncrutils,
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../spec/[crypto, datatypes, digest, forkedbeaconstate_helpers],
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../beacon_node_common,
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../consensus_object_pools/[block_pools_types, blockchain_dag]
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export blockchain_dag, presto, presto_client
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const
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DecimalSet = {'0' .. '9'}
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# Base10 (decimal) set of chars
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HexadecimalSet = {'0'..'9', 'A'..'F', 'a'..'f'}
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# Base16 (hexadecimal) set of chars
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Base58Set = {'1'..'9', 'A'..'H', 'J'..'N', 'P'..'Z', 'a'..'k', 'm'..'z'}
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# Base58 set of chars
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MaxDecimalSize = len($high(uint64))
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# Maximum size of `uint64` decimal value
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MaxPeerIdSize = 128
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# Maximum size of `PeerID` base58 encoded value
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ValidatorKeySize = RawPubKeySize * 2
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# Size of `ValidatorPubKey` hexadecimal value (without 0x)
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ValidatorSigSize = RawSigSize * 2
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# Size of `ValidatorSig` hexadecimal value (without 0x)
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RootHashSize = sizeof(Eth2Digest) * 2
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# Size of `xxx_root` hexadecimal value (without 0x)
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FarFutureEpochString* = "18446744073709551615"
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MaxEpoch* = compute_epoch_at_slot(not(0'u64))
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BlockValidationError* =
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"The block failed validation, but was successfully broadcast anyway. It " &
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"was not integrated into the beacon node's database."
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BlockValidationSuccess* =
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"The block was validated successfully and has been broadcast"
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BeaconNodeInSyncError* =
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"Beacon node is currently syncing and not serving request on that endpoint"
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BlockNotFoundError* =
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"Block header/data has not been found"
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BlockProduceError* =
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"Could not produce the block"
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EmptyRequestBodyError* =
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"Empty request's body"
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InvalidBlockObjectError* =
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"Unable to decode block object(s)"
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InvalidAttestationObjectError* =
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"Unable to decode attestation object(s)"
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AttestationValidationError* =
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"Some errors happened while validating attestation(s)"
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AttestationValidationSuccess* =
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"Attestation object(s) was broadcasted"
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InvalidAttesterSlashingObjectError* =
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"Unable to decode attester slashing object(s)"
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AttesterSlashingValidationError* =
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"Invalid attester slashing, it will never pass validation so it's rejected"
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AttesterSlashingValidationSuccess* =
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"Attester slashing object was broadcasted"
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InvalidProposerSlashingObjectError* =
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"Unable to decode proposer slashing object(s)"
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ProposerSlashingValidationError* =
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"Invalid proposer slashing, it will never pass validation so it's rejected"
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ProposerSlashingValidationSuccess* =
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"Proposer slashing object was broadcasted"
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InvalidVoluntaryExitObjectError* =
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"Unable to decode voluntary exit object(s)"
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VoluntaryExitValidationError* =
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"Invalid voluntary exit, it will never pass validation so it's rejected"
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VoluntaryExitValidationSuccess* =
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"Voluntary exit object(s) was broadcasted"
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InvalidAggregateAndProofObjectError* =
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"Unable to decode aggregate and proof object(s)"
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AggregateAndProofValidationError* =
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"Invalid aggregate and proof, it will never pass validation so it's " &
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"rejected"
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AggregateAndProofValidationSuccess* =
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"Aggregate and proof object(s) was broadcasted"
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BeaconCommitteeSubscriptionSuccess* =
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"Beacon node processed committee subscription request"
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InvalidParentRootValueError* =
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"Invalid parent root value"
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MissingSlotValueError* =
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"Missing `slot` value"
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InvalidSlotValueError* =
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"Invalid slot value"
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MissingCommitteeIndexValueError* =
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"Missing `committee_index` value"
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InvalidCommitteeIndexValueError* =
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"Invalid committee index value"
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MissingAttestationDataRootValueError* =
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"Missing `attestation_data_root` value"
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InvalidAttestationDataRootValueError* =
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"Invalid attestation data root value"
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UnableToGetAggregatedAttestationError* =
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"Unable to retrieve an aggregated attestation"
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MissingRandaoRevealValue* =
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"Missing `randao_reveal` value"
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InvalidRandaoRevealValue* =
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"Invalid randao reveal value"
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InvalidGraffitiBytesValye* =
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"Invalid graffiti bytes value"
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InvalidEpochValueError* =
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"Invalid epoch value"
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InvalidStateIdValueError* =
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"Invalid state identifier value"
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InvalidBlockIdValueError* =
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"Invalid block identifier value"
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InvalidValidatorIdValueError* =
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"Invalid validator's identifier value(s)"
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MaximumNumberOfValidatorIdsError* =
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"Maximum number of validator identifier values exceeded"
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InvalidValidatorStatusValueError* =
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"Invalid validator's status value error"
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InvalidValidatorIndexValueError* =
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"Invalid validator's index value(s)"
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EmptyValidatorIndexArrayError* =
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"Empty validator's index array"
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InvalidSubscriptionRequestValueError* =
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"Invalid subscription request object(s)"
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ValidatorNotFoundError* =
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"Could not find validator"
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ValidatorStatusNotFoundError* =
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"Could not obtain validator's status"
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UniqueValidatorKeyError* =
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"Only unique validator's keys are allowed"
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TooHighValidatorIndexValueError* =
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"Validator index exceeds maximum number of validators allowed"
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UnsupportedValidatorIndexValueError* =
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"Validator index exceeds maximum supported number of validators"
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UniqueValidatorIndexError* =
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"Only unique validator's index are allowed"
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StateNotFoundError* =
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"State not found"
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SlotNotFoundError* =
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"Slot number is too far away"
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SlotNotInNextWallSlotEpochError* =
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"Requested slot not in next wall-slot epoch"
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SlotFromThePastError* =
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"Requested slot from the past"
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ProposerNotFoundError* =
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"Could not find proposer for the head and slot"
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NoHeadForSlotError* =
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"Cound not find head for slot"
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EpochOverflowValueError* =
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"Requesting epoch for which slot would overflow"
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InvalidPeerStateValueError* =
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"Invalid peer's state value(s) error"
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InvalidPeerDirectionValueError* =
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"Invalid peer's direction value(s) error"
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InvalidPeerIdValueError* =
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"Invalid peer's id value(s) error"
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PeerNotFoundError* =
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"Peer not found"
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InvalidLogLevelValueError* =
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"Invalid log level value error"
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InternalServerError* =
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"Internal server error"
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NoImplementationError* =
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"Not implemented yet"
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type
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ValidatorQueryKind* {.pure.} = enum
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Index, Key
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RestValidatorIndex* = distinct uint64
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ValidatorIndexError* {.pure.} = enum
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UnsupportedValue, TooHighValue
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ValidatorIdent* = object
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case kind*: ValidatorQueryKind
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of ValidatorQueryKind.Index:
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index*: RestValidatorIndex
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of ValidatorQueryKind.Key:
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key*: ValidatorPubKey
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ValidatorFilterKind* {.pure.} = enum
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PendingInitialized, PendingQueued,
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ActiveOngoing, ActiveExiting, ActiveSlashed,
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ExitedUnslashed, ExitedSlashed,
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WithdrawalPossible, WithdrawalDone
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ValidatorFilter* = set[ValidatorFilterKind]
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StateQueryKind* {.pure.} = enum
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Slot, Root, Named
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StateIdentType* {.pure.} = enum
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Head, Genesis, Finalized, Justified
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StateIdent* = object
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case kind*: StateQueryKind
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of StateQueryKind.Slot:
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slot*: Slot
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of StateQueryKind.Root:
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root*: Eth2Digest
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of StateQueryKind.Named:
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value*: StateIdentType
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BlockQueryKind* {.pure.} = enum
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Slot, Root, Named
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BlockIdentType* {.pure.} = enum
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Head, Genesis, Finalized
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BlockIdent* = object
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case kind*: BlockQueryKind
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of BlockQueryKind.Slot:
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slot*: Slot
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of BlockQueryKind.Root:
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root*: Eth2Digest
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of BlockQueryKind.Named:
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value*: BlockIdentType
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PeerStateKind* {.pure.} = enum
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Disconnected, Connecting, Connected, Disconnecting
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PeerDirectKind* {.pure.} = enum
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Inbound, Outbound
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EventTopic* {.pure.} = enum
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Head, Block, Attestation, VoluntaryExit, FinalizedCheckpoint, ChainReorg
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EventTopics* = set[EventTopic]
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func match(data: openarray[char], charset: set[char]): int =
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for ch in data:
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if ch notin charset:
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return 1
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0
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proc validate(key: string, value: string): int =
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## This is rough validation procedure which should be simple and fast,
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## because it will be used for query routing.
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case key
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of "{epoch}":
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0
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of "{slot}":
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0
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of "{peer_id}":
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0
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of "{state_id}":
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0
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of "{block_id}":
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0
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of "{validator_id}":
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0
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else:
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1
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proc parseRoot(value: string): Result[Eth2Digest, cstring] =
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try:
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ok(Eth2Digest(data: hexToByteArray[32](value)))
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except ValueError:
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err("Unable to decode root value")
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proc decodeString*(t: typedesc[Slot], value: string): Result[Slot, cstring] =
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let res = ? Base10.decode(uint64, value)
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ok(Slot(res))
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proc decodeString*(t: typedesc[Epoch], value: string): Result[Epoch, cstring] =
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let res = ? Base10.decode(uint64, value)
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ok(Epoch(res))
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proc decodeString*(t: typedesc[StateIdent],
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value: string): Result[StateIdent, cstring] =
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if len(value) > 2:
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if (value[0] == '0') and (value[1] == 'x'):
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if len(value) != RootHashSize + 2:
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err("Incorrect state root value length")
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else:
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let res = ? parseRoot(value)
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ok(StateIdent(kind: StateQueryKind.Root, root: res))
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elif (value[0] in DecimalSet) and (value[1] in DecimalSet):
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let res = ? Base10.decode(uint64, value)
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ok(StateIdent(kind: StateQueryKind.Slot, slot: Slot(res)))
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else:
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case value
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of "head":
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ok(StateIdent(kind: StateQueryKind.Named,
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value: StateIdentType.Head))
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of "genesis":
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ok(StateIdent(kind: StateQueryKind.Named,
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value: StateIdentType.Genesis))
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of "finalized":
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ok(StateIdent(kind: StateQueryKind.Named,
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value: StateIdentType.Finalized))
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of "justified":
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ok(StateIdent(kind: StateQueryKind.Named,
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value: StateIdentType.Justified))
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else:
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err("Incorrect state identifier value")
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else:
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let res = ? Base10.decode(uint64, value)
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ok(StateIdent(kind: StateQueryKind.Slot, slot: Slot(res)))
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proc decodeString*(t: typedesc[BlockIdent],
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value: string): Result[BlockIdent, cstring] =
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if len(value) > 2:
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if (value[0] == '0') and (value[1] == 'x'):
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if len(value) != RootHashSize + 2:
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err("Incorrect block root value length")
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else:
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let res = ? parseRoot(value)
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ok(BlockIdent(kind: BlockQueryKind.Root, root: res))
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elif (value[0] in DecimalSet) and (value[1] in DecimalSet):
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let res = ? Base10.decode(uint64, value)
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ok(BlockIdent(kind: BlockQueryKind.Slot, slot: Slot(res)))
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else:
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case value
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of "head":
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ok(BlockIdent(kind: BlockQueryKind.Named,
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value: BlockIdentType.Head))
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of "genesis":
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ok(BlockIdent(kind: BlockQueryKind.Named,
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value: BlockIdentType.Genesis))
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of "finalized":
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ok(BlockIdent(kind: BlockQueryKind.Named,
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value: BlockIdentType.Finalized))
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else:
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err("Incorrect block identifier value")
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else:
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let res = ? Base10.decode(uint64, value)
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ok(BlockIdent(kind: BlockQueryKind.Slot, slot: Slot(res)))
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proc decodeString*(t: typedesc[ValidatorIdent],
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value: string): Result[ValidatorIdent, cstring] =
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if len(value) > 2:
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if (value[0] == '0') and (value[1] == 'x'):
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if len(value) != ValidatorKeySize + 2:
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err("Incorrect validator's key value length")
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else:
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let res = ? ValidatorPubKey.fromHex(value)
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ok(ValidatorIdent(kind: ValidatorQueryKind.Key,
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key: res))
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elif (value[0] in DecimalSet) and (value[1] in DecimalSet):
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let res = ? Base10.decode(uint64, value)
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ok(ValidatorIdent(kind: ValidatorQueryKind.Index,
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index: RestValidatorIndex(res)))
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else:
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err("Incorrect validator identifier value")
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else:
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let res = ? Base10.decode(uint64, value)
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ok(ValidatorIdent(kind: ValidatorQueryKind.Index,
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index: RestValidatorIndex(res)))
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proc decodeString*(t: typedesc[PeerID],
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value: string): Result[PeerID, cstring] =
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PeerID.init(value)
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proc decodeString*(t: typedesc[CommitteeIndex],
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value: string): Result[CommitteeIndex, cstring] =
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let res = ? Base10.decode(uint64, value)
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ok(CommitteeIndex(res))
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proc decodeString*(t: typedesc[Eth2Digest],
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value: string): Result[Eth2Digest, cstring] =
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if len(value) != RootHashSize + 2:
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return err("Incorrect root value length")
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if value[0] != '0' and value[1] != 'x':
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return err("Incorrect root value encoding")
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parseRoot(value)
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proc decodeString*(t: typedesc[ValidatorFilter],
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value: string): Result[ValidatorFilter, cstring] =
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case value
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of "pending_initialized":
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ok({ValidatorFilterKind.PendingInitialized})
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of "pending_queued":
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ok({ValidatorFilterKind.PendingQueued})
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of "active_ongoing":
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ok({ValidatorFilterKind.ActiveOngoing})
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of "active_exiting":
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ok({ValidatorFilterKind.ActiveExiting})
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of "active_slashed":
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ok({ValidatorFilterKind.ActiveSlashed})
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of "exited_unslashed":
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ok({ValidatorFilterKind.ExitedUnslashed})
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of "exited_slashed":
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ok({ValidatorFilterKind.ExitedSlashed})
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of "withdrawal_possible":
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ok({ValidatorFilterKind.WithdrawalPossible})
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of "withdrawal_done":
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ok({ValidatorFilterKind.WithdrawalDone})
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of "pending":
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ok({
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ValidatorFilterKind.PendingInitialized,
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ValidatorFilterKind.PendingQueued
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})
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of "active":
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ok({
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ValidatorFilterKind.ActiveOngoing,
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ValidatorFilterKind.ActiveExiting,
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ValidatorFilterKind.ActiveSlashed
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})
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of "exited":
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ok({
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ValidatorFilterKind.ExitedUnslashed,
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ValidatorFilterKind.ExitedSlashed
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})
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of "withdrawal":
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ok({
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ValidatorFilterKind.WithdrawalPossible,
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ValidatorFilterKind.WithdrawalDone
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})
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else:
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err("Incorrect validator state identifier value")
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proc decodeString*(t: typedesc[PeerStateKind],
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value: string): Result[PeerStateKind, cstring] =
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case value
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of "disconnected":
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ok(PeerStateKind.Disconnected)
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of "connecting":
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ok(PeerStateKind.Connecting)
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of "connected":
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ok(PeerStateKind.Connected)
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of "disconnecting":
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ok(PeerStateKind.Disconnecting)
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else:
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err("Incorrect peer's state value")
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proc decodeString*(t: typedesc[PeerDirectKind],
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value: string): Result[PeerDirectKind, cstring] =
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case value
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of "inbound":
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ok(PeerDirectKind.Inbound)
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of "outbound":
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ok(PeerDirectKind.Outbound)
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else:
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err("Incorrect peer's direction value")
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proc decodeString*(t: typedesc[EventTopic],
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value: string): Result[EventTopic, cstring] =
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case value
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of "head":
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ok(EventTopic.Head)
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of "block":
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ok(EventTopic.Block)
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of "attestation":
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ok(EventTopic.Attestation)
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of "voluntary_exit":
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ok(EventTopic.VoluntaryExit)
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of "finalized_checkpoint":
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ok(EventTopic.FinalizedCheckpoint)
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of "chain_reorg":
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ok(EventTopic.ChainReorg)
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else:
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err("Incorrect event's topic value")
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proc decodeString*(t: typedesc[ValidatorSig],
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value: string): Result[ValidatorSig, cstring] =
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if len(value) != ValidatorSigSize + 2:
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return err("Incorrect validator signature value length")
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if value[0] != '0' and value[1] != 'x':
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return err("Incorrect validator signature encoding")
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ValidatorSig.fromHex(value)
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proc decodeString*(t: typedesc[GraffitiBytes],
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value: string): Result[GraffitiBytes, cstring] =
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try:
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ok(GraffitiBytes.init(value))
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except ValueError:
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err("Unable to decode graffiti value")
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proc decodeString*(t: typedesc[string],
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value: string): Result[string, cstring] =
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ok(value)
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proc getRouter*(): RestRouter =
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RestRouter.init(validate)
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proc getCurrentHead*(node: BeaconNode,
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slot: Slot): Result[BlockRef, cstring] =
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let res = node.dag.head
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# if not(node.isSynced(res)):
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# return err("Cannot fulfill request until node is synced")
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if res.slot + uint64(2 * SLOTS_PER_EPOCH) < slot:
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return err("Requesting way ahead of the current head")
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ok(res)
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proc getCurrentHead*(node: BeaconNode,
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epoch: Epoch): Result[BlockRef, cstring] =
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if epoch > MaxEpoch:
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return err("Requesting epoch for which slot would overflow")
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node.getCurrentHead(compute_start_slot_at_epoch(epoch))
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proc toBlockSlot*(blckRef: BlockRef): BlockSlot =
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blckRef.atSlot(blckRef.slot)
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proc getBlockSlot*(node: BeaconNode,
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stateIdent: StateIdent): Result[BlockSlot, cstring] =
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case stateIdent.kind
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of StateQueryKind.Slot:
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let head = ? getCurrentHead(node, stateIdent.slot)
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let bslot = head.atSlot(stateIdent.slot)
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if isNil(bslot.blck):
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return err("Block not found")
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ok(bslot)
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of StateQueryKind.Root:
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let blckRef = node.dag.getRef(stateIdent.root)
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if isNil(blckRef):
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return err("Block not found")
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ok(blckRef.toBlockSlot())
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of StateQueryKind.Named:
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|
case stateIdent.value
|
|
of StateIdentType.Head:
|
|
ok(node.dag.head.toBlockSlot())
|
|
of StateIdentType.Genesis:
|
|
ok(node.dag.getGenesisBlockSlot())
|
|
of StateIdentType.Finalized:
|
|
ok(node.dag.finalizedHead)
|
|
of StateIdentType.Justified:
|
|
ok(node.dag.head.atEpochStart(getStateField(
|
|
node.dag.headState.data, current_justified_checkpoint).epoch))
|
|
|
|
proc getBlockDataFromBlockIdent*(node: BeaconNode,
|
|
id: BlockIdent): Result[BlockData, cstring] =
|
|
case id.kind
|
|
of BlockQueryKind.Named:
|
|
case id.value
|
|
of BlockIdentType.Head:
|
|
ok(node.dag.get(node.dag.head))
|
|
of BlockIdentType.Genesis:
|
|
ok(node.dag.getGenesisBlockData())
|
|
of BlockIdentType.Finalized:
|
|
ok(node.dag.get(node.dag.finalizedHead.blck))
|
|
of BlockQueryKind.Root:
|
|
let res = node.dag.get(id.root)
|
|
if res.isNone():
|
|
return err("Block not found")
|
|
ok(res.get())
|
|
of BlockQueryKind.Slot:
|
|
let head = ? node.getCurrentHead(id.slot)
|
|
let blockSlot = head.atSlot(id.slot)
|
|
if isNil(blockSlot.blck):
|
|
return err("Block not found")
|
|
ok(node.dag.get(blockSlot.blck))
|
|
|
|
template withStateForBlockSlot*(node: BeaconNode,
|
|
blockSlot: BlockSlot, body: untyped): untyped =
|
|
template isState(state: StateData): bool =
|
|
state.blck.atSlot(getStateField(state.data, slot)) == blockSlot
|
|
|
|
if isState(node.dag.headState):
|
|
withStateVars(node.dag.headState):
|
|
var cache {.inject.}: StateCache
|
|
body
|
|
else:
|
|
let rpcState = assignClone(node.dag.headState)
|
|
node.dag.withState(rpcState[], blockSlot):
|
|
body
|
|
|
|
proc toValidatorIndex*(value: RestValidatorIndex): Result[ValidatorIndex,
|
|
ValidatorIndexError] =
|
|
when sizeof(ValidatorIndex) == 4:
|
|
if uint64(value) < VALIDATOR_REGISTRY_LIMIT:
|
|
# On x86 platform Nim allows only `int32` indexes, so all the indexes in
|
|
# range `2^31 <= x < 2^32` are not supported.
|
|
if uint64(value) <= uint64(high(int32)):
|
|
ok(ValidatorIndex(value))
|
|
else:
|
|
err(ValidatorIndexError.UnsupportedValue)
|
|
else:
|
|
err(ValidatorIndexError.TooHighValue)
|
|
elif sizeof(ValidatorIndex) == 8:
|
|
if uint64(value) < VALIDATOR_REGISTRY_LIMIT:
|
|
ok(ValidatorIndex(value))
|
|
else:
|
|
err(ValidatorIndexError.TooHighValue)
|
|
else:
|
|
doAssert(false, "ValidatorIndex type size is incorrect")
|
|
|
|
proc init*(t: typedesc[StateIdent], v: StateIdentType): StateIdent =
|
|
StateIdent(kind: StateQueryKind.Named, value: v)
|
|
|
|
proc init*(t: typedesc[StateIdent], v: Slot): StateIdent =
|
|
StateIdent(kind: StateQueryKind.Slot, slot: v)
|
|
|
|
proc init*(t: typedesc[StateIdent], v: Eth2Digest): StateIdent =
|
|
StateIdent(kind: StateQueryKind.Root, root: v)
|
|
|
|
proc init*(t: typedesc[ValidatorIdent], v: ValidatorIndex): ValidatorIdent =
|
|
ValidatorIdent(kind: ValidatorQueryKind.Index, index: RestValidatorIndex(v))
|
|
|
|
proc init*(t: typedesc[ValidatorIdent], v: ValidatorPubKey): ValidatorIdent =
|
|
ValidatorIdent(kind: ValidatorQueryKind.Key, key: v)
|