nimbus-eth2/beacon_chain/rpc/rest_validator_api.nim

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2022-06-09 08:50:36 +00:00
# Copyright (c) 2018-2022 Status Research & Development GmbH
# Licensed and distributed under either of
# * MIT license (license terms in the root directory or at https://opensource.org/licenses/MIT).
# * Apache v2 license (license terms in the root directory or at https://www.apache.org/licenses/LICENSE-2.0).
# at your option. This file may not be copied, modified, or distributed except according to those terms.
2022-06-09 08:50:36 +00:00
import std/[typetraits, sets]
import stew/[results, base10], chronicles
import ".."/[beacon_chain_db, beacon_node],
".."/networking/eth2_network,
".."/consensus_object_pools/[blockchain_dag, spec_cache,
attestation_pool, sync_committee_msg_pool],
".."/validators/validator_duties,
".."/spec/[beaconstate, forks, network],
".."/spec/datatypes/[phase0, altair],
"."/[rest_utils, state_ttl_cache]
export rest_utils
logScope: topics = "rest_validatorapi"
proc installValidatorApiHandlers*(router: var RestRouter, node: BeaconNode) =
# https://ethereum.github.io/beacon-APIs/#/Validator/getAttesterDuties
router.api(MethodPost, "/eth/v1/validator/duties/attester/{epoch}") do (
epoch: Epoch, contentBody: Option[ContentBody]) -> RestApiResponse:
let indexList =
block:
if contentBody.isNone():
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return RestApiResponse.jsonError(Http400, EmptyRequestBodyError)
let dres = decodeBody(seq[RestValidatorIndex], contentBody.get())
if dres.isErr():
return RestApiResponse.jsonError(Http400,
InvalidValidatorIndexValueError,
$dres.error())
var res: HashSet[ValidatorIndex]
let items = dres.get()
for item in items:
let vres = item.toValidatorIndex()
if vres.isErr():
case vres.error()
of ValidatorIndexError.TooHighValue:
return RestApiResponse.jsonError(Http400,
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TooHighValidatorIndexValueError)
of ValidatorIndexError.UnsupportedValue:
return RestApiResponse.jsonError(Http500,
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UnsupportedValidatorIndexValueError)
res.incl(vres.get())
if len(res) == 0:
return RestApiResponse.jsonError(Http400,
EmptyValidatorIndexArrayError)
res
let qepoch =
block:
if epoch.isErr():
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return RestApiResponse.jsonError(Http400, InvalidEpochValueError,
$epoch.error())
let
res = epoch.get()
wallTime = node.beaconClock.now() + MAXIMUM_GOSSIP_CLOCK_DISPARITY
wallEpoch = wallTime.slotOrZero().epoch
if res > wallEpoch + 1:
return RestApiResponse.jsonError(Http400, InvalidEpochValueError,
"Cannot request duties past next epoch")
res
let qhead =
block:
let res = node.getSyncedHead(qepoch)
if res.isErr():
return RestApiResponse.jsonError(Http503, BeaconNodeInSyncError)
res.get()
let shufflingRef = node.dag.getShufflingRef(qhead, qepoch, true).valueOr:
return RestApiResponse.jsonError(Http400, PrunedStateError)
let duties =
block:
var res: seq[RestAttesterDuty]
let
committees_per_slot = get_committee_count_per_slot(shufflingRef)
for committee_index in get_committee_indices(committees_per_slot):
for slot in qepoch.slots():
let
committee =
get_beacon_committee(shufflingRef, slot, committee_index)
for index_in_committee, validator_index in committee:
if validator_index in indexList:
let validator_key = node.dag.validatorKey(validator_index)
if validator_key.isSome():
res.add(
RestAttesterDuty(
pubkey: validator_key.get().toPubKey(),
validator_index: validator_index,
committee_index: committee_index,
committee_length: lenu64(committee),
committees_at_slot: committees_per_slot,
validator_committee_index: uint64(index_in_committee),
slot: slot
)
)
res
# getSyncedHead() implies non-optimistic node.
let optimistic =
if node.currentSlot().epoch() >= node.dag.cfg.BELLATRIX_FORK_EPOCH:
some(false)
else:
none[bool]()
return RestApiResponse.jsonResponseWRoot(
duties, shufflingRef.attester_dependent_root, optimistic)
# https://ethereum.github.io/beacon-APIs/#/Validator/getProposerDuties
router.api(MethodGet, "/eth/v1/validator/duties/proposer/{epoch}") do (
epoch: Epoch) -> RestApiResponse:
let qepoch =
block:
if epoch.isErr():
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return RestApiResponse.jsonError(Http400, InvalidEpochValueError,
$epoch.error())
let
res = epoch.get()
wallTime = node.beaconClock.now() + MAXIMUM_GOSSIP_CLOCK_DISPARITY
wallEpoch = wallTime.slotOrZero().epoch
if res > wallEpoch + 1:
return RestApiResponse.jsonError(Http400, InvalidEpochValueError,
"Cannot request duties past next epoch")
res
let qhead =
block:
let res = node.getSyncedHead(qepoch)
if res.isErr():
return RestApiResponse.jsonError(Http503, BeaconNodeInSyncError)
res.get()
let epochRef = node.dag.getEpochRef(qhead, qepoch, true).valueOr:
return RestApiResponse.jsonError(Http400, PrunedStateError, $error)
let duties =
block:
var res: seq[RestProposerDuty]
for i, bp in epochRef.beacon_proposers:
if i == 0 and qepoch == 0:
# Fix for https://github.com/status-im/nimbus-eth2/issues/2488
# Slot(0) at Epoch(0) do not have a proposer.
continue
if bp.isSome():
res.add(
RestProposerDuty(
pubkey: node.dag.validatorKey(bp.get()).get().toPubKey(),
validator_index: bp.get(),
slot: qepoch.start_slot() + i
)
)
res
# getSyncedHead() implies non-optimistic node.
let optimistic =
if node.currentSlot().epoch() >= node.dag.cfg.BELLATRIX_FORK_EPOCH:
some(false)
else:
none[bool]()
return RestApiResponse.jsonResponseWRoot(
duties, epochRef.proposer_dependent_root, optimistic)
router.api(MethodPost, "/eth/v1/validator/duties/sync/{epoch}") do (
epoch: Epoch, contentBody: Option[ContentBody]) -> RestApiResponse:
let indexList =
block:
if contentBody.isNone():
return RestApiResponse.jsonError(Http400, EmptyRequestBodyError)
let dres = decodeBody(seq[RestValidatorIndex], contentBody.get())
if dres.isErr():
return RestApiResponse.jsonError(Http400,
InvalidValidatorIndexValueError,
$dres.error())
var res: seq[ValidatorIndex]
let items = dres.get()
for item in items:
let vres = item.toValidatorIndex()
if vres.isErr():
case vres.error()
of ValidatorIndexError.TooHighValue:
return RestApiResponse.jsonError(Http400,
TooHighValidatorIndexValueError)
of ValidatorIndexError.UnsupportedValue:
return RestApiResponse.jsonError(Http500,
UnsupportedValidatorIndexValueError)
res.add(vres.get())
if len(res) == 0:
return RestApiResponse.jsonError(Http400,
EmptyValidatorIndexArrayError)
res
let qepoch =
block:
if epoch.isErr():
return RestApiResponse.jsonError(Http400, InvalidEpochValueError,
$epoch.error())
let res = epoch.get()
if res > MaxEpoch:
return RestApiResponse.jsonError(Http400, EpochOverflowValueError)
res
# We use a local proc in order to:
# * avoid code duplication
# * reduce code bloat from `withState`
proc produceResponse(requestedValidatorIndices: openArray[ValidatorIndex],
syncCommittee: openArray[ValidatorPubKey],
stateValidators: seq[Validator]
): seq[RestSyncCommitteeDuty] {.nimcall.} =
result = newSeqOfCap[RestSyncCommitteeDuty](len(requestedValidatorIndices))
for requestedValidatorIdx in requestedValidatorIndices:
if requestedValidatorIdx.uint64 >= stateValidators.lenu64:
# If the requested validator index was not valid within this old
# state, it's not possible that it will sit on the sync committee.
# Since this API must omit results for validators that don't have
# duties, we can simply ingnore this requested index.
# (we won't bother to validate it agains a more recent state).
continue
let requestedValidatorPubkey =
stateValidators[requestedValidatorIdx].pubkey
var indicesInSyncCommittee = newSeq[IndexInSyncCommittee]()
for idx, syncCommitteeMemberPubkey in syncCommittee:
if syncCommitteeMemberPubkey == requestedValidatorPubkey:
indicesInSyncCommittee.add(IndexInSyncCommittee idx)
if indicesInSyncCommittee.len > 0:
result.add RestSyncCommitteeDuty(
pubkey: requestedValidatorPubkey,
validator_index: requestedValidatorIdx,
validator_sync_committee_indices: indicesInSyncCommittee)
template emptyResponse: auto =
newSeq[RestSyncCommitteeDuty]()
# We check the head state first in order to avoid costly replays
# if possible:
let
qSyncPeriod = sync_committee_period(qepoch)
headEpoch = node.dag.head.slot.epoch
headSyncPeriod = sync_committee_period(headEpoch)
if qSyncPeriod == headSyncPeriod:
let optimistic = node.getStateOptimistic(node.dag.headState)
let res = withState(node.dag.headState):
when stateFork >= BeaconStateFork.Altair:
produceResponse(indexList,
forkyState.data.current_sync_committee.pubkeys.data,
forkyState.data.validators.asSeq)
else:
emptyResponse()
return RestApiResponse.jsonResponseWOpt(res, optimistic)
elif qSyncPeriod == (headSyncPeriod + 1):
let optimistic = node.getStateOptimistic(node.dag.headState)
let res = withState(node.dag.headState):
when stateFork >= BeaconStateFork.Altair:
produceResponse(indexList,
forkyState.data.next_sync_committee.pubkeys.data,
forkyState.data.validators.asSeq)
else:
emptyResponse()
return RestApiResponse.jsonResponseWOpt(res, optimistic)
elif qSyncPeriod > headSyncPeriod:
# The requested epoch may still be too far in the future.
if not(node.isSynced(node.dag.head)):
return RestApiResponse.jsonError(Http503, BeaconNodeInSyncError)
else:
return RestApiResponse.jsonError(Http400, EpochFromFutureError)
else:
# The slot at the start of the sync committee period is likely to have a
# state snapshot in the database, so we can restore the state relatively
# cheaply:
let earliestSlotInQSyncPeriod =
Slot(qSyncPeriod * SLOTS_PER_SYNC_COMMITTEE_PERIOD)
# TODO
# The DAG can offer a short-cut for getting just the information we need
# in order to compute the sync committee for the epoch. See the following
# discussion for more details:
# https://github.com/status-im/nimbus-eth2/pull/3133#pullrequestreview-817184693
Prune `BlockRef` on finalization (#3513) Up til now, the block dag has been using `BlockRef`, a structure adapted for a full DAG, to represent all of chain history. This is a correct and simple design, but does not exploit the linearity of the chain once parts of it finalize. By pruning the in-memory `BlockRef` structure at finalization, we save, at the time of writing, a cool ~250mb (or 25%:ish) chunk of memory landing us at a steady state of ~750mb normal memory usage for a validating node. Above all though, we prevent memory usage from growing proportionally with the length of the chain, something that would not be sustainable over time - instead, the steady state memory usage is roughly determined by the validator set size which grows much more slowly. With these changes, the core should remain sustainable memory-wise post-merge all the way to withdrawals (when the validator set is expected to grow). In-memory indices are still used for the "hot" unfinalized portion of the chain - this ensure that consensus performance remains unchanged. What changes is that for historical access, we use a db-based linear slot index which is cache-and-disk-friendly, keeping the cost for accessing historical data at a similar level as before, achieving the savings at no percievable cost to functionality or performance. A nice collateral benefit is the almost-instant startup since we no longer load any large indicies at dag init. The cost of this functionality instead can be found in the complexity of having to deal with two ways of traversing the chain - by `BlockRef` and by slot. * use `BlockId` instead of `BlockRef` where finalized / historical data may be required * simplify clearance pre-advancement * remove dag.finalizedBlocks (~50:ish mb) * remove `getBlockAtSlot` - use `getBlockIdAtSlot` instead * `parent` and `atSlot` for `BlockId` now require a `ChainDAGRef` instance, unlike `BlockRef` traversal * prune `BlockRef` parents on finality (~200:ish mb) * speed up ChainDAG init by not loading finalized history index * mess up light client server error handling - this need revisiting :)
2022-03-17 17:42:56 +00:00
let bsi = node.dag.getBlockIdAtSlot(earliestSlotInQSyncPeriod).valueOr:
return RestApiResponse.jsonError(Http404, StateNotFoundError)
Prune `BlockRef` on finalization (#3513) Up til now, the block dag has been using `BlockRef`, a structure adapted for a full DAG, to represent all of chain history. This is a correct and simple design, but does not exploit the linearity of the chain once parts of it finalize. By pruning the in-memory `BlockRef` structure at finalization, we save, at the time of writing, a cool ~250mb (or 25%:ish) chunk of memory landing us at a steady state of ~750mb normal memory usage for a validating node. Above all though, we prevent memory usage from growing proportionally with the length of the chain, something that would not be sustainable over time - instead, the steady state memory usage is roughly determined by the validator set size which grows much more slowly. With these changes, the core should remain sustainable memory-wise post-merge all the way to withdrawals (when the validator set is expected to grow). In-memory indices are still used for the "hot" unfinalized portion of the chain - this ensure that consensus performance remains unchanged. What changes is that for historical access, we use a db-based linear slot index which is cache-and-disk-friendly, keeping the cost for accessing historical data at a similar level as before, achieving the savings at no percievable cost to functionality or performance. A nice collateral benefit is the almost-instant startup since we no longer load any large indicies at dag init. The cost of this functionality instead can be found in the complexity of having to deal with two ways of traversing the chain - by `BlockRef` and by slot. * use `BlockId` instead of `BlockRef` where finalized / historical data may be required * simplify clearance pre-advancement * remove dag.finalizedBlocks (~50:ish mb) * remove `getBlockAtSlot` - use `getBlockIdAtSlot` instead * `parent` and `atSlot` for `BlockId` now require a `ChainDAGRef` instance, unlike `BlockRef` traversal * prune `BlockRef` parents on finality (~200:ish mb) * speed up ChainDAG init by not loading finalized history index * mess up light client server error handling - this need revisiting :)
2022-03-17 17:42:56 +00:00
node.withStateForBlockSlotId(bsi):
let optimistic = node.getStateOptimistic(state)
let res = withState(state):
when stateFork >= BeaconStateFork.Altair:
produceResponse(indexList,
forkyState.data.current_sync_committee.pubkeys.data,
forkyState.data.validators.asSeq)
else:
emptyResponse()
return RestApiResponse.jsonResponseWOpt(res, optimistic)
return RestApiResponse.jsonError(Http404, StateNotFoundError)
# https://ethereum.github.io/beacon-APIs/#/Validator/produceBlock
router.api(MethodGet, "/eth/v1/validator/blocks/{slot}") do (
slot: Slot, randao_reveal: Option[ValidatorSig],
graffiti: Option[GraffitiBytes]) -> RestApiResponse:
let message =
block:
let qslot = block:
if slot.isErr():
return RestApiResponse.jsonError(Http400, InvalidSlotValueError,
$slot.error())
let res = slot.get()
if res <= node.dag.finalizedHead.slot:
return RestApiResponse.jsonError(Http400, InvalidSlotValueError,
"Slot already finalized")
let
wallTime = node.beaconClock.now() + MAXIMUM_GOSSIP_CLOCK_DISPARITY
if res > wallTime.slotOrZero:
return RestApiResponse.jsonError(Http400, InvalidSlotValueError,
"Slot cannot be in the future")
if node.dag.cfg.blockForkAtEpoch(res.epoch) != BeaconBlockFork.Phase0:
return RestApiResponse.jsonError(Http400,
"Use v2 for Altair+ slots")
res
let qrandao =
if randao_reveal.isNone():
return RestApiResponse.jsonError(Http400, MissingRandaoRevealValue)
else:
let res = randao_reveal.get()
if res.isErr():
return RestApiResponse.jsonError(Http400,
InvalidRandaoRevealValue,
$res.error())
res.get()
let qgraffiti =
if graffiti.isNone():
defaultGraffitiBytes()
else:
let res = graffiti.get()
if res.isErr():
return RestApiResponse.jsonError(Http400,
InvalidGraffitiBytesValue,
$res.error())
res.get()
let qhead =
block:
let res = node.getSyncedHead(qslot)
if res.isErr():
return RestApiResponse.jsonError(Http503, BeaconNodeInSyncError,
$res.error())
res.get()
let proposer = node.dag.getProposer(qhead, qslot)
if proposer.isNone():
return RestApiResponse.jsonError(Http400, ProposerNotFoundError)
let res = await makeBeaconBlockForHeadAndSlot(
node, qrandao, proposer.get(), qgraffiti, qhead, qslot)
if res.isErr():
return RestApiResponse.jsonError(Http400, res.error())
res.get()
return
case message.kind
of BeaconBlockFork.Phase0:
RestApiResponse.jsonResponse(message.phase0Data)
else:
RestApiResponse.jsonError(Http400,
"Use v2 for Altair+ slots")
# https://ethereum.github.io/beacon-APIs/#/Validator/produceBlockV2
router.api(MethodGet, "/eth/v2/validator/blocks/{slot}") do (
slot: Slot, randao_reveal: Option[ValidatorSig],
graffiti: Option[GraffitiBytes], skip_randao_verification: Option[string]) -> RestApiResponse:
let message =
block:
let qslot = block:
if slot.isErr():
return RestApiResponse.jsonError(Http400, InvalidSlotValueError,
$slot.error())
let res = slot.get()
if res <= node.dag.finalizedHead.slot:
return RestApiResponse.jsonError(Http400, InvalidSlotValueError,
"Slot already finalized")
let
wallTime = node.beaconClock.now() + MAXIMUM_GOSSIP_CLOCK_DISPARITY
if res > wallTime.slotOrZero:
return RestApiResponse.jsonError(Http400, InvalidSlotValueError,
"Slot cannot be in the future")
res
let qskip_randao_verification =
if skip_randao_verification.isNone():
false
else:
let res = skip_randao_verification.get()
if res.isErr() or res.get() != "":
return RestApiResponse.jsonError(Http400,
InvalidSkipRandaoVerificationValue)
true
let qrandao =
if randao_reveal.isNone():
return RestApiResponse.jsonError(Http400, MissingRandaoRevealValue)
else:
let res = randao_reveal.get()
if res.isErr():
return RestApiResponse.jsonError(Http400,
InvalidRandaoRevealValue,
$res.error())
res.get()
let qgraffiti =
if graffiti.isNone():
defaultGraffitiBytes()
else:
let res = graffiti.get()
if res.isErr():
return RestApiResponse.jsonError(Http400,
InvalidGraffitiBytesValue,
$res.error())
res.get()
let qhead =
block:
let res = node.getSyncedHead(qslot)
if res.isErr():
return RestApiResponse.jsonError(Http503, BeaconNodeInSyncError,
$res.error())
res.get()
let proposer = node.dag.getProposer(qhead, qslot)
if proposer.isNone():
return RestApiResponse.jsonError(Http400, ProposerNotFoundError)
let res = await makeBeaconBlockForHeadAndSlot(
node, qrandao, proposer.get(), qgraffiti, qhead, qslot, qskip_randao_verification)
if res.isErr():
return RestApiResponse.jsonError(Http400, res.error())
res.get()
return RestApiResponse.jsonResponsePlain(message)
# https://ethereum.github.io/beacon-APIs/#/Validator/produceAttestationData
router.api(MethodGet, "/eth/v1/validator/attestation_data") do (
slot: Option[Slot],
committee_index: Option[CommitteeIndex]) -> RestApiResponse:
let adata =
block:
let qslot =
block:
if slot.isNone():
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return RestApiResponse.jsonError(Http400, MissingSlotValueError)
let res = slot.get()
if res.isErr():
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return RestApiResponse.jsonError(Http400, InvalidSlotValueError,
$res.error())
res.get()
if qslot <= node.dag.finalizedHead.slot:
return RestApiResponse.jsonError(Http400, InvalidSlotValueError,
"Slot already finalized")
let
wallTime = node.beaconClock.now()
if qslot > (wallTime + MAXIMUM_GOSSIP_CLOCK_DISPARITY).slotOrZero:
return RestApiResponse.jsonError(
Http400, InvalidSlotValueError, "Slot cannot be in the future")
if qslot + SLOTS_PER_EPOCH <
(wallTime - MAXIMUM_GOSSIP_CLOCK_DISPARITY).slotOrZero:
return RestApiResponse.jsonError(
Http400, InvalidSlotValueError,
"Slot cannot be more than an epoch in the past")
let qindex =
block:
if committee_index.isNone():
return RestApiResponse.jsonError(Http400,
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MissingCommitteeIndexValueError)
let res = committee_index.get()
if res.isErr():
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return RestApiResponse.jsonError(Http400,
InvalidCommitteeIndexValueError,
$res.error())
res.get()
let qhead =
block:
let res = node.getSyncedHead(qslot)
if res.isErr():
return RestApiResponse.jsonError(Http503, BeaconNodeInSyncError)
res.get()
let epochRef = node.dag.getEpochRef(qhead, qslot.epoch, true).valueOr:
return RestApiResponse.jsonError(Http400, PrunedStateError, $error)
makeAttestationData(epochRef, qhead.atSlot(qslot), qindex)
return RestApiResponse.jsonResponse(adata)
# https://ethereum.github.io/beacon-APIs/#/Validator/getAggregatedAttestation
router.api(MethodGet, "/eth/v1/validator/aggregate_attestation") do (
attestation_data_root: Option[Eth2Digest],
slot: Option[Slot]) -> RestApiResponse:
let attestation =
block:
let qslot =
block:
if slot.isNone():
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return RestApiResponse.jsonError(Http400, MissingSlotValueError)
let res = slot.get()
if res.isErr():
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return RestApiResponse.jsonError(Http400, InvalidSlotValueError,
$res.error())
res.get()
let qroot =
block:
if attestation_data_root.isNone():
return RestApiResponse.jsonError(Http400,
MissingAttestationDataRootValueError)
let res = attestation_data_root.get()
if res.isErr():
return RestApiResponse.jsonError(Http400,
InvalidAttestationDataRootValueError, $res.error())
res.get()
let res =
node.attestationPool[].getAggregatedAttestation(qslot, qroot)
if res.isNone():
return RestApiResponse.jsonError(Http400,
UnableToGetAggregatedAttestationError)
res.get()
return RestApiResponse.jsonResponse(attestation)
# https://ethereum.github.io/beacon-APIs/#/Validator/publishAggregateAndProofs
router.api(MethodPost, "/eth/v1/validator/aggregate_and_proofs") do (
contentBody: Option[ContentBody]) -> RestApiResponse:
let proofs =
block:
if contentBody.isNone():
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return RestApiResponse.jsonError(Http400, EmptyRequestBodyError)
let dres = decodeBody(seq[SignedAggregateAndProof], contentBody.get())
if dres.isErr():
return RestApiResponse.jsonError(Http400,
InvalidAggregateAndProofObjectError,
$dres.error())
dres.get()
# Since our validation logic supports batch processing, we will submit all
# aggregated attestations for validation.
var pending =
block:
var res: seq[Future[SendResult]]
for proof in proofs:
res.add(node.router.routeSignedAggregateAndProof(proof))
res
await allFutures(pending)
for future in pending:
if future.done():
let res = future.read()
if res.isErr():
return RestApiResponse.jsonError(Http400,
AggregateAndProofValidationError,
$res.error())
else:
return RestApiResponse.jsonError(Http500,
"Unexpected server failure, while sending aggregate and proof")
New validator client using REST API. (#2651) * Initial commit. * Exporting getConfig(). * Add beacon node checking procedures. * Post rebase fixes. * Use runSlotLoop() from nimbus_beacon_node. Fallback implementation. Fixes for ETH2 REST serialization. * Add beacon_clock.durationToNextSlot(). Move type declarations from beacon_rest_api to json_rest_serialization. Fix seq[ValidatorIndex] serialization. Refactor ValidatorPool and add some utility procedures. Create separate version of validator_client. * Post-rebase fixes. Remove CookedPubKey from validator_pool.nim. * Now we should be able to produce attestations and aggregate and proofs. But its not working yet. * Debugging attestation sending. * Add durationToNextAttestation. Optimize some debug logs. Fix aggregation_bits encoding. Bump chronos/presto. * Its alive. * Fixes for launch_local_testnet script. Bump chronos. * Switch client API to not use `/api` prefix. * Post-rebase adjustments. * Fix endpoint for publishBlock(). * Add CONFIG_NAME. Add more checks to ensure that beacon_node is compatible. * Add beacon committee subscription support to validator_client. * Fix stacktrace should be an array of strings. Fix committee subscriptions should not be `data` keyed. * Log duration to next block proposal. * Fix beacon_node_status import. * Use jsonMsgResponse() instead of jsonError(). * Fix graffityBytes usage. Remove unnecessary `await`. Adjust creation of SignedBlock instance. Remove legacy files. * Rework durationToNextSlot() and durationToNextEpoch() to use `fromNow`. * Fix race condition for block proposal and attestations for same slot. Fix local_testnet script to properly kill tasks on Windows. Bump chronos and nim-http-tools, to allow connections to infura.io (basic auth). * Catch services errors. Improve performance of local_testnet.sh script on Windows. Fix race condition when attestation producing. * Post-rebase fixes. * Bump chronos and presto. * Calculate block publishing delay. Fix pkill in one more place. * Add error handling and timeouts to firstSuccess() template. Add onceToAll() template. Add checkNodes() procedure. Refactor firstSuccess() template. Add error checking to api.nim calls. * Deprecated usage onceToAll() for better stability. Address comment and send attestations asap. * Avoid unnecessary loop when calculating minimal duration.
2021-07-13 11:15:07 +00:00
return RestApiResponse.jsonMsgResponse(AggregateAndProofValidationSuccess)
# https://ethereum.github.io/beacon-APIs/#/Validator/prepareBeaconCommitteeSubnet
router.api(MethodPost,
"/eth/v1/validator/beacon_committee_subscriptions") do (
contentBody: Option[ContentBody]) -> RestApiResponse:
let requests =
block:
if contentBody.isNone():
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return RestApiResponse.jsonError(Http400, EmptyRequestBodyError)
let dres = decodeBody(seq[RestCommitteeSubscription],
contentBody.get())
if dres.isErr():
return RestApiResponse.jsonError(Http400,
InvalidSubscriptionRequestValueError,
$dres.error())
dres.get()
if not(node.isSynced(node.dag.head)):
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return RestApiResponse.jsonError(Http503, BeaconNodeInSyncError)
let
wallSlot = node.beaconClock.now.slotOrZero
wallEpoch = wallSlot.epoch
head = node.dag.head
var currentEpoch, nextEpoch: Opt[ShufflingRef]
template getAndCacheShufflingRef(shufflingRefVar: var Opt[ShufflingRef],
epoch: Epoch): ShufflingRef =
if shufflingRefVar.isNone:
shufflingRefVar = block:
let tmp = node.dag.getShufflingRef(head, epoch, true).valueOr:
return RestApiResponse.jsonError(Http400, PrunedStateError)
Opt.some tmp
shufflingRefVar.get
for request in requests:
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if uint64(request.committee_index) >= uint64(MAX_COMMITTEES_PER_SLOT):
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return RestApiResponse.jsonError(Http400,
InvalidCommitteeIndexValueError)
if uint64(request.validator_index) >=
lenu64(getStateField(node.dag.headState, validators)):
return RestApiResponse.jsonError(Http400,
InvalidValidatorIndexValueError)
if wallSlot > request.slot + 1:
return RestApiResponse.jsonError(Http400, SlotFromThePastError)
let
epoch = request.slot.epoch
shufflingRef =
if epoch == wallEpoch:
currentEpoch.getAndCacheShufflingRef(wallEpoch)
elif epoch == wallEpoch + 1:
nextEpoch.getAndCacheShufflingRef(wallEpoch + 1)
else:
return RestApiResponse.jsonError(Http400,
SlotNotInNextWallSlotEpochError)
let subnet_id = compute_subnet_for_attestation(
get_committee_count_per_slot(shufflingRef), request.slot,
request.committee_index)
node.consensusManager[].actionTracker.registerDuty(
request.slot, subnet_id, request.validator_index,
request.is_aggregator)
let validator_pubkey =
getStateField(node.dag.headState, validators).item(
request.validator_index).pubkey
node.validatorMonitor[].addAutoMonitor(
validator_pubkey, ValidatorIndex(request.validator_index))
New validator client using REST API. (#2651) * Initial commit. * Exporting getConfig(). * Add beacon node checking procedures. * Post rebase fixes. * Use runSlotLoop() from nimbus_beacon_node. Fallback implementation. Fixes for ETH2 REST serialization. * Add beacon_clock.durationToNextSlot(). Move type declarations from beacon_rest_api to json_rest_serialization. Fix seq[ValidatorIndex] serialization. Refactor ValidatorPool and add some utility procedures. Create separate version of validator_client. * Post-rebase fixes. Remove CookedPubKey from validator_pool.nim. * Now we should be able to produce attestations and aggregate and proofs. But its not working yet. * Debugging attestation sending. * Add durationToNextAttestation. Optimize some debug logs. Fix aggregation_bits encoding. Bump chronos/presto. * Its alive. * Fixes for launch_local_testnet script. Bump chronos. * Switch client API to not use `/api` prefix. * Post-rebase adjustments. * Fix endpoint for publishBlock(). * Add CONFIG_NAME. Add more checks to ensure that beacon_node is compatible. * Add beacon committee subscription support to validator_client. * Fix stacktrace should be an array of strings. Fix committee subscriptions should not be `data` keyed. * Log duration to next block proposal. * Fix beacon_node_status import. * Use jsonMsgResponse() instead of jsonError(). * Fix graffityBytes usage. Remove unnecessary `await`. Adjust creation of SignedBlock instance. Remove legacy files. * Rework durationToNextSlot() and durationToNextEpoch() to use `fromNow`. * Fix race condition for block proposal and attestations for same slot. Fix local_testnet script to properly kill tasks on Windows. Bump chronos and nim-http-tools, to allow connections to infura.io (basic auth). * Catch services errors. Improve performance of local_testnet.sh script on Windows. Fix race condition when attestation producing. * Post-rebase fixes. * Bump chronos and presto. * Calculate block publishing delay. Fix pkill in one more place. * Add error handling and timeouts to firstSuccess() template. Add onceToAll() template. Add checkNodes() procedure. Refactor firstSuccess() template. Add error checking to api.nim calls. * Deprecated usage onceToAll() for better stability. Address comment and send attestations asap. * Avoid unnecessary loop when calculating minimal duration.
2021-07-13 11:15:07 +00:00
return RestApiResponse.jsonMsgResponse(BeaconCommitteeSubscriptionSuccess)
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# https://ethereum.github.io/beacon-APIs/#/Validator/prepareSyncCommitteeSubnets
router.api(MethodPost,
"/eth/v1/validator/sync_committee_subscriptions") do (
contentBody: Option[ContentBody]) -> RestApiResponse:
let subscriptions =
block:
if contentBody.isNone():
return RestApiResponse.jsonError(Http400, EmptyRequestBodyError)
let dres = decodeBody(seq[RestSyncCommitteeSubscription],
contentBody.get())
if dres.isErr():
return RestApiResponse.jsonError(Http400,
InvalidSyncCommitteeSubscriptionRequestError)
let subs = dres.get()
for item in subs:
if item.until_epoch > MaxEpoch:
return RestApiResponse.jsonError(Http400, EpochOverflowValueError)
if item.until_epoch < node.dag.cfg.ALTAIR_FORK_EPOCH:
return RestApiResponse.jsonError(Http400,
EpochFromTheIncorrectForkError)
if uint64(item.validator_index) >=
lenu64(getStateField(node.dag.headState, validators)):
return RestApiResponse.jsonError(Http400,
InvalidValidatorIndexValueError)
let validator_pubkey =
getStateField(node.dag.headState, validators).item(
item.validator_index).pubkey
node.syncCommitteeMsgPool
.syncCommitteeSubscriptions[validator_pubkey] = item.until_epoch
node.validatorMonitor[].addAutoMonitor(
validator_pubkey, ValidatorIndex(item.validator_index))
subs
return RestApiResponse.jsonMsgResponse(SyncCommitteeSubscriptionSuccess)
# https://ethereum.github.io/beacon-APIs/#/Validator/produceSyncCommitteeContribution
router.api(MethodGet,
"/eth/v1/validator/sync_committee_contribution") do (
slot: Option[Slot], subcommittee_index: Option[SyncSubCommitteeIndex],
beacon_block_root: Option[Eth2Digest]) -> RestApiResponse:
let qslot = block:
if slot.isNone():
return RestApiResponse.jsonError(Http400, MissingSlotValueError)
let res = slot.get()
if res.isErr():
return RestApiResponse.jsonError(Http400, InvalidSlotValueError,
$res.error())
let rslot = res.get()
if epoch(rslot) < node.dag.cfg.ALTAIR_FORK_EPOCH:
return RestApiResponse.jsonError(Http400,
SlotFromTheIncorrectForkError)
rslot
if qslot <= node.dag.finalizedHead.slot:
return RestApiResponse.jsonError(Http400, InvalidSlotValueError,
"Slot already finalized")
let qindex =
if subcommittee_index.isNone():
return RestApiResponse.jsonError(Http400,
MissingSubCommitteeIndexValueError)
else:
let res = subcommittee_index.get()
if res.isErr():
return RestApiResponse.jsonError(Http400,
InvalidSubCommitteeIndexValueError,
$res.error())
res.get()
let qroot =
if beacon_block_root.isNone():
return RestApiResponse.jsonError(Http400,
MissingBeaconBlockRootValueError)
else:
let res = beacon_block_root.get()
if res.isErr():
return RestApiResponse.jsonError(Http400,
InvalidBeaconBlockRootValueError,
$res.error())
res.get()
# Check if node is fully synced.
let sres = node.getSyncedHead(qslot)
if sres.isErr():
return RestApiResponse.jsonError(Http503, BeaconNodeInSyncError)
var contribution = SyncCommitteeContribution()
let res = node.syncCommitteeMsgPool[].produceContribution(
qslot, qroot, qindex, contribution)
if not(res):
return RestApiResponse.jsonError(Http400, ProduceContributionError)
return RestApiResponse.jsonResponse(contribution)
# https://ethereum.github.io/beacon-APIs/#/Validator/publishContributionAndProofs
router.api(MethodPost,
"/eth/v1/validator/contribution_and_proofs") do (
contentBody: Option[ContentBody]) -> RestApiResponse:
let proofs =
block:
if contentBody.isNone():
return RestApiResponse.jsonError(Http400, EmptyRequestBodyError)
let dres = decodeBody(seq[SignedContributionAndProof],
contentBody.get())
if dres.isErr():
return RestApiResponse.jsonError(Http400,
InvalidContributionAndProofMessageError)
dres.get()
let pending =
block:
var res: seq[Future[SendResult]]
for proof in proofs:
res.add(node.router.routeSignedContributionAndProof(proof, true))
res
let failures =
block:
var res: seq[RestIndexedErrorMessageItem]
await allFutures(pending)
for index, future in pending:
if future.done():
let fres = future.read()
if fres.isErr():
let failure = RestIndexedErrorMessageItem(index: index,
message: $fres.error())
res.add(failure)
elif future.failed() or future.cancelled():
# This is unexpected failure, so we log the error message.
let exc = future.readError()
let failure = RestIndexedErrorMessageItem(index: index,
message: $exc.msg)
res.add(failure)
res
if len(failures) > 0:
return RestApiResponse.jsonErrorList(Http400,
ContributionAndProofValidationError,
failures)
else:
return RestApiResponse.jsonMsgResponse(
ContributionAndProofValidationSuccess
)
# https://ethereum.github.io/beacon-APIs/#/ValidatorRequiredApi/prepareBeaconProposer
router.api(MethodPost,
"/eth/v1/validator/prepare_beacon_proposer") do (
contentBody: Option[ContentBody]) -> RestApiResponse:
let
body =
block:
if contentBody.isNone():
return RestApiResponse.jsonError(Http400, EmptyRequestBodyError)
let dres = decodeBody(seq[PrepareBeaconProposer], contentBody.get())
if dres.isErr():
return RestApiResponse.jsonError(Http400,
InvalidPrepareBeaconProposerError)
dres.get()
currentEpoch = node.beaconClock.now.slotOrZero.epoch
for proposerData in body:
node.dynamicFeeRecipientsStore[].addMapping(
proposerData.validator_index,
proposerData.fee_recipient,
currentEpoch)
return RestApiResponse.response("", Http200, "text/plain")
# https://ethereum.github.io/beacon-APIs/#/Validator/registerValidator
# https://github.com/ethereum/beacon-APIs/blob/v2.3.0/apis/validator/register_validator.yaml
router.api(MethodPost,
"/eth/v1/validator/register_validator") do (
contentBody: Option[ContentBody]) -> RestApiResponse:
let
body =
block:
if contentBody.isNone():
return RestApiResponse.jsonError(Http400, EmptyRequestBodyError)
let dres = decodeBody(seq[SignedValidatorRegistrationV1], contentBody.get())
if dres.isErr():
return RestApiResponse.jsonError(Http400,
InvalidPrepareBeaconProposerError)
dres.get()
for signedValidatorRegistration in body:
# Don't validate beyond syntactically, because
# "requests containing currently inactive or unknown validator pubkeys
# will be accepted, as they may become active at a later epoch". Along
# these lines, even if it's adding a validator the BN already has as a
# local validator, the keymanager API might remove that from the BN.
node.externalBuilderRegistrations[signedValidatorRegistration.message.pubkey] =
signedValidatorRegistration
return RestApiResponse.response("", Http200, "text/plain")