validator

package
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 Go to latest Published: Oct 5, 2021 License: GPL-3.0 Imports: 62 Imported by: 0

Documentation

Overview

Package validator defines a gRPC validator service implementation, providing critical endpoints for validator clients to submit blocks/attestations to the beacon node, receive assignments, and more.

Index

Constants

This section is empty.

Variables

This section is empty.

Functions

This section is empty.

Types

type Server 

type Server struct {
	Ctx                    context.Context
	AttestationCache       *cache.AttestationCache
	HeadFetcher            blockchain.HeadFetcher
	ForkFetcher            blockchain.ForkFetcher
	FinalizationFetcher    blockchain.FinalizationFetcher
	TimeFetcher            blockchain.TimeFetcher
	CanonicalStateChan     chan *ethpb.BeaconState
	BlockFetcher           powchain.POWBlockFetcher
	DepositFetcher         depositcache.DepositFetcher
	ChainStartFetcher      powchain.ChainStartFetcher
	Eth1InfoFetcher        powchain.ChainInfoFetcher
	SyncChecker            sync.Checker
	StateNotifier          statefeed.Notifier
	BlockNotifier          blockfeed.Notifier
	P2P                    p2p.Broadcaster
	AttPool                attestations.Pool
	SlashingsPool          slashings.PoolManager
	ExitPool               voluntaryexits.PoolManager
	SyncCommitteePool      synccommittee.Pool
	BlockReceiver          blockchain.BlockReceiver
	MockEth1Votes          bool
	Eth1BlockFetcher       powchain.POWBlockFetcher
	PendingDepositsFetcher depositcache.PendingDepositsFetcher
	OperationNotifier      opfeed.Notifier
	StateGen               stategen.StateManager
}

Server defines a server implementation of the gRPC Validator service, providing RPC endpoints for obtaining validator assignments per epoch, the slots and committees in which particular validators need to perform their responsibilities, and more.

func (*Server) AggregatedSigAndAggregationBits 

func (vs *Server) AggregatedSigAndAggregationBits(
	ctx context.Context,
	msgs []*ethpb.SyncCommitteeMessage,
	slot types.Slot,
	subnetId uint64,
	blockRoot []byte,
) ([]byte, []byte, error)

AggregatedSigAndAggregationBits returns the aggregated signature and aggregation bits associated with a particular set of sync committee messages.

func (*Server) AssignValidatorToSubnet 

func (vs *Server) AssignValidatorToSubnet(pubkey []byte, status ethpb.ValidatorStatus)

AssignValidatorToSubnet checks the status and pubkey of a particular validator to discern whether persistent subnets need to be registered for them.

func (*Server) CanonicalHead 

func (vs *Server) CanonicalHead(ctx context.Context, _ *emptypb.Empty) (*ethpb.SignedBeaconBlock, error)

CanonicalHead of the current beacon chain. This method is requested on-demand by a validator when it is their time to propose or attest.

func (*Server) CheckDoppelGanger 

func (vs *Server) CheckDoppelGanger(ctx context.Context, req *ethpb.DoppelGangerRequest) (*ethpb.DoppelGangerResponse, error)

CheckDoppelGanger checks if the provided keys are currently active in the network.

func (*Server) ComputeStateRoot 

func (vs *Server) ComputeStateRoot(ctx context.Context, block block.SignedBeaconBlock) ([]byte, error)

ComputeStateRoot computes the state root after a block has been processed through a state transition and returns it to the validator client.

func (*Server) DomainData 

func (vs *Server) DomainData(_ context.Context, request *ethpb.DomainRequest) (*ethpb.DomainResponse, error)

DomainData fetches the current domain version information from the beacon state.

func (*Server) GetAttestationData 

func (vs *Server) GetAttestationData(ctx context.Context, req *ethpb.AttestationDataRequest) (*ethpb.AttestationData, error)

GetAttestationData requests that the beacon node produce an attestation data object, which the validator acting as an attester will then sign.

func (*Server) GetBeaconBlock 

func (vs *Server) GetBeaconBlock(ctx context.Context, req *ethpb.BlockRequest) (*ethpb.GenericBeaconBlock, error)

GetBeaconBlock is called by a proposer during its assigned slot to request a block to sign by passing in the slot and the signed randao reveal of the slot. Returns phase0 beacon blocks before the Altair fork epoch and Altair blocks post-fork epoch.

func (*Server) GetBlock 

func (vs *Server) GetBlock(ctx context.Context, req *ethpb.BlockRequest) (*ethpb.BeaconBlock, error)

GetBlock is called by a proposer during its assigned slot to request a block to sign by passing in the slot and the signed randao reveal of the slot.

DEPRECATED: Use GetBeaconBlock instead to handle blocks pre and post-Altair hard fork. This endpoint cannot handle blocks after the Altair fork epoch.

func (*Server) GetDuties 

func (vs *Server) GetDuties(ctx context.Context, req *ethpb.DutiesRequest) (*ethpb.DutiesResponse, error)

GetDuties returns the duties assigned to a list of validators specified in the request object.

func (*Server) GetSyncCommitteeContribution 

func (vs *Server) GetSyncCommitteeContribution(
	ctx context.Context, req *ethpb.SyncCommitteeContributionRequest,
) (*ethpb.SyncCommitteeContribution, error)

GetSyncCommitteeContribution is called by a sync committee aggregator to retrieve sync committee contribution object.

func (*Server) GetSyncMessageBlockRoot 

func (vs *Server) GetSyncMessageBlockRoot(
	ctx context.Context, _ *emptypb.Empty,
) (*ethpb.SyncMessageBlockRootResponse, error)

GetSyncMessageBlockRoot retrieves the sync committee block root of the beacon chain.

func (*Server) GetSyncSubcommitteeIndex 

func (vs *Server) GetSyncSubcommitteeIndex(
	ctx context.Context, req *ethpb.SyncSubcommitteeIndexRequest,
) (*ethpb.SyncSubcommitteeIndexResponse, error)

GetSyncSubcommitteeIndex is called by a sync committee participant to get its subcommittee index for sync message aggregation duty.

func (*Server) MultipleValidatorStatus 

func (vs *Server) MultipleValidatorStatus(
	ctx context.Context,
	req *ethpb.MultipleValidatorStatusRequest,
) (*ethpb.MultipleValidatorStatusResponse, error)

MultipleValidatorStatus is the same as ValidatorStatus. Supports retrieval of multiple validator statuses. Takes a list of public keys or a list of validator indices.

func (*Server) ProposeAttestation 

func (vs *Server) ProposeAttestation(ctx context.Context, att *ethpb.Attestation) (*ethpb.AttestResponse, error)

ProposeAttestation is a function called by an attester to vote on a block via an attestation object as defined in the Ethereum Serenity specification.

func (*Server) ProposeBeaconBlock 

func (vs *Server) ProposeBeaconBlock(ctx context.Context, req *ethpb.GenericSignedBeaconBlock) (*ethpb.ProposeResponse, error)

ProposeBeaconBlock is called by a proposer during its assigned slot to create a block in an attempt to get it processed by the beacon node as the canonical head.

func (*Server) ProposeBlock 

func (vs *Server) ProposeBlock(ctx context.Context, rBlk *ethpb.SignedBeaconBlock) (*ethpb.ProposeResponse, error)

ProposeBlock is called by a proposer during its assigned slot to create a block in an attempt to get it processed by the beacon node as the canonical head.

DEPRECATED: Use ProposeBeaconBlock instead.

func (*Server) ProposeExit 

func (vs *Server) ProposeExit(ctx context.Context, req *ethpb.SignedVoluntaryExit) (*ethpb.ProposeExitResponse, error)

ProposeExit proposes an exit for a validator.

func (*Server) StreamBlocksAltair 

func (vs *Server) StreamBlocksAltair(req *ethpb.StreamBlocksRequest, stream ethpb.BeaconNodeValidator_StreamBlocksAltairServer) error

StreamBlocksAltair to clients every single time a block is received by the beacon node.

func (*Server) StreamDuties 

func (vs *Server) StreamDuties(req *ethpb.DutiesRequest, stream ethpb.BeaconNodeValidator_StreamDutiesServer) error

StreamDuties returns the duties assigned to a list of validators specified in the request object via a server-side stream. The stream sends out new assignments in case a chain re-org occurred.

func (*Server) SubmitAggregateSelectionProof 

func (vs *Server) SubmitAggregateSelectionProof(ctx context.Context, req *ethpb.AggregateSelectionRequest) (*ethpb.AggregateSelectionResponse, error)

SubmitAggregateSelectionProof is called by a validator when its assigned to be an aggregator. The aggregator submits the selection proof to obtain the aggregated attestation object to sign over.

func (*Server) SubmitSignedAggregateSelectionProof 

func (vs *Server) SubmitSignedAggregateSelectionProof(
	ctx context.Context,
	req *ethpb.SignedAggregateSubmitRequest,
) (*ethpb.SignedAggregateSubmitResponse, error)

SubmitSignedAggregateSelectionProof is called by a validator to broadcast a signed aggregated and proof object.

func (*Server) SubmitSignedContributionAndProof 

func (vs *Server) SubmitSignedContributionAndProof(
	ctx context.Context, s *ethpb.SignedContributionAndProof,
) (*emptypb.Empty, error)

SubmitSignedContributionAndProof is called by a sync committee aggregator to submit signed contribution and proof object.

func (*Server) SubmitSyncMessage 

func (vs *Server) SubmitSyncMessage(ctx context.Context, msg *ethpb.SyncCommitteeMessage) (*emptypb.Empty, error)

SubmitSyncMessage submits the sync committee message to the network. It also saves the sync committee message into the pending pool for block inclusion.

func (*Server) SubscribeCommitteeSubnets 

func (vs *Server) SubscribeCommitteeSubnets(ctx context.Context, req *ethpb.CommitteeSubnetsSubscribeRequest) (*emptypb.Empty, error)

SubscribeCommitteeSubnets subscribes to the committee ID subnet given subscribe request.

func (*Server) ValidatorIndex 

func (vs *Server) ValidatorIndex(ctx context.Context, req *ethpb.ValidatorIndexRequest) (*ethpb.ValidatorIndexResponse, error)

ValidatorIndex is called by a validator to get its index location in the beacon state.

func (*Server) ValidatorStatus 

func (vs *Server) ValidatorStatus(
	ctx context.Context,
	req *ethpb.ValidatorStatusRequest,
) (*ethpb.ValidatorStatusResponse, error)

ValidatorStatus returns the validator status of the current epoch. The status response can be one of the following: 

DEPOSITED - validator's deposit has been recognized by Ethereum 1, not yet recognized by Ethereum.
PENDING - validator is in Ethereum's activation queue.
ACTIVE - validator is active.
EXITING - validator has initiated an an exit request, or has dropped below the ejection balance and is being kicked out.
EXITED - validator is no longer validating.
SLASHING - validator has been kicked out due to meeting a slashing condition.
UNKNOWN_STATUS - validator does not have a known status in the network.

func (*Server) WaitForActivation 

func (vs *Server) WaitForActivation(req *ethpb.ValidatorActivationRequest, stream ethpb.BeaconNodeValidator_WaitForActivationServer) error

WaitForActivation checks if a validator public key exists in the active validator registry of the current beacon state, if not, then it creates a stream which listens for canonical states which contain the validator with the public key as an active validator record.

func (*Server) WaitForChainStart 

func (vs *Server) WaitForChainStart(_ *emptypb.Empty, stream ethpb.BeaconNodeValidator_WaitForChainStartServer) error

WaitForChainStart queries the logs of the Deposit Contract in order to verify the beacon chain has started its runtime and validators begin their responsibilities. If it has not, it then subscribes to an event stream triggered by the powchain service whenever the ChainStart log does occur in the Deposit Contract on ETH 1.0.

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