166 lines
7.3 KiB
Nim
166 lines
7.3 KiB
Nim
# beacon_chain
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# Copyright (c) 2018-2021 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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import
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# Standard library
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std/[tables],
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# Nimble packages
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stew/[objects],
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json_rpc/[rpcserver, jsonmarshal],
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chronicles,
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# Local modules
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../spec/[datatypes, digest, crypto, helpers, network, signatures],
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../spec/eth2_apis/callsigs_types,
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../block_pools/[chain_dag, spec_cache], ../ssz/merkleization,
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../beacon_node_common, ../beacon_node_types, ../attestation_pool,
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../validator_duties, ../eth2_network,
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../eth2_json_rpc_serialization,
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./rpc_utils
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logScope: topics = "valapi"
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type
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RpcServer* = RpcHttpServer
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proc installValidatorApiHandlers*(rpcServer: RpcServer, node: BeaconNode) =
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rpcServer.rpc("get_v1_validator_block") do (
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slot: Slot, graffiti: GraffitiBytes, randao_reveal: ValidatorSig) -> BeaconBlock:
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debug "get_v1_validator_block", slot = slot
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let head = node.doChecksAndGetCurrentHead(slot)
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let proposer = node.chainDag.getProposer(head, slot)
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if proposer.isNone():
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raise newException(CatchableError, "could not retrieve block for slot: " & $slot)
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let message = makeBeaconBlockForHeadAndSlot(
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node, randao_reveal, proposer.get()[0], graffiti, head, slot)
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if message.isNone():
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raise newException(CatchableError, "could not retrieve block for slot: " & $slot)
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return message.get()
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rpcServer.rpc("post_v1_validator_block") do (body: SignedBeaconBlock) -> bool:
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debug "post_v1_validator_block",
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slot = body.message.slot,
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prop_idx = body.message.proposer_index
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let head = node.doChecksAndGetCurrentHead(body.message.slot)
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if head.slot >= body.message.slot:
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raise newException(CatchableError,
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"Proposal is for a past slot: " & $body.message.slot)
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if head == proposeSignedBlock(node, head, AttachedValidator(), body):
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raise newException(CatchableError, "Could not propose block")
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return true
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rpcServer.rpc("get_v1_validator_attestation_data") do (
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slot: Slot, committee_index: CommitteeIndex) -> AttestationData:
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debug "get_v1_validator_attestation_data", slot = slot
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let
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head = node.doChecksAndGetCurrentHead(slot)
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epochRef = node.chainDag.getEpochRef(head, slot.epoch)
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return makeAttestationData(epochRef, head.atSlot(slot), committee_index)
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rpcServer.rpc("get_v1_validator_aggregate_attestation") do (
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slot: Slot, attestation_data_root: Eth2Digest)-> Attestation:
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debug "get_v1_validator_aggregate_attestation"
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let res = node.attestationPool[].getAggregatedAttestation(slot, attestation_data_root)
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if res.isSome:
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return res.get
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raise newException(CatchableError, "Could not retrieve an aggregated attestation")
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rpcServer.rpc("post_v1_validator_aggregate_and_proofs") do (
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payload: SignedAggregateAndProof) -> bool:
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debug "post_v1_validator_aggregate_and_proofs"
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node.network.broadcast(node.topicAggregateAndProofs, payload)
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notice "Aggregated attestation sent",
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attestation = shortLog(payload.message.aggregate)
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rpcServer.rpc("get_v1_validator_duties_attester") do (
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epoch: Epoch, public_keys: seq[ValidatorPubKey]) -> seq[AttesterDuties]:
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debug "get_v1_validator_duties_attester", epoch = epoch
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let
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head = node.doChecksAndGetCurrentHead(epoch)
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epochRef = node.chainDag.getEpochRef(head, epoch)
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committees_per_slot = get_committee_count_per_slot(epochRef)
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for i in 0 ..< SLOTS_PER_EPOCH:
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let slot = compute_start_slot_at_epoch(epoch) + i
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for committee_index in 0'u64..<committees_per_slot:
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let committee = get_beacon_committee(
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epochRef, slot, committee_index.CommitteeIndex)
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for index_in_committee, validatorIdx in committee:
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if validatorIdx < epochRef.validator_keys.len.ValidatorIndex:
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let curr_val_pubkey = epochRef.validator_keys[validatorIdx].initPubKey
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if public_keys.findIt(it == curr_val_pubkey) != -1:
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result.add((public_key: curr_val_pubkey,
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validator_index: validatorIdx,
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committee_index: committee_index.CommitteeIndex,
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committee_length: committee.lenu64,
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validator_committee_index: index_in_committee.uint64,
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slot: slot))
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rpcServer.rpc("get_v1_validator_duties_proposer") do (
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epoch: Epoch) -> seq[ValidatorPubkeySlotPair]:
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debug "get_v1_validator_duties_proposer", epoch = epoch
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let
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head = node.doChecksAndGetCurrentHead(epoch)
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epochRef = node.chainDag.getEpochRef(head, epoch)
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for i in 0 ..< SLOTS_PER_EPOCH:
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if epochRef.beacon_proposers[i].isSome():
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result.add((public_key: epochRef.beacon_proposers[i].get()[1].initPubKey(),
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slot: compute_start_slot_at_epoch(epoch) + i))
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rpcServer.rpc("post_v1_validator_beacon_committee_subscriptions") do (
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committee_index: CommitteeIndex, slot: Slot, aggregator: bool,
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validator_pubkey: ValidatorPubKey, slot_signature: ValidatorSig) -> bool:
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debug "post_v1_validator_beacon_committee_subscriptions",
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committee_index, slot
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if committee_index.uint64 >= ATTESTATION_SUBNET_COUNT.uint64:
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raise newException(CatchableError,
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"Invalid committee index")
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if node.syncManager.inProgress:
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raise newException(CatchableError,
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"Beacon node is currently syncing and not serving request on that endpoint")
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let wallSlot = node.beaconClock.now.slotOrZero
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if wallSlot > slot + 1:
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raise newException(CatchableError,
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"Past slot requested")
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let epoch = slot.epoch
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if epoch >= wallSlot.epoch and epoch - wallSlot.epoch > 1:
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raise newException(CatchableError,
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"Slot requested not in current or next wall-slot epoch")
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if not verify_slot_signature(
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node.chainDag.headState.data.data.fork,
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node.chainDag.headState.data.data.genesis_validators_root,
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slot, validator_pubkey, slot_signature):
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raise newException(CatchableError,
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"Invalid slot signature")
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let
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head = node.doChecksAndGetCurrentHead(epoch)
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epochRef = node.chainDag.getEpochRef(head, epoch)
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subnet = compute_subnet_for_attestation(
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get_committee_count_per_slot(epochRef), slot, committee_index).uint8
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# Either subnet already subscribed or not. If not, subscribe. If it is,
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# extend subscription. All one knows from the API combined with how far
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# ahead one can check for attestation schedule is that it might be used
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# for up to the end of next epoch. Therefore, arrange for subscriptions
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# to last at least that long.
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if subnet notin node.attestationSubnets.subscribedSubnets:
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# When to subscribe. Since it's not clear when from the API it's first
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# needed, do so immediately.
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node.attestationSubnets.subscribeSlot[subnet] =
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min(node.attestationSubnets.subscribeSlot[subnet], wallSlot)
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node.attestationSubnets.unsubscribeSlot[subnet] =
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max(
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compute_start_slot_at_epoch(epoch + 2),
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node.attestationSubnets.unsubscribeSlot[subnet])
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