validators

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Published: Aug 16, 2022 License: MIT Imports: 37 Imported by: 0

README

Validators

This package manages the mapping of Tendermint nodes to Vega nodes. This is important as it determines which nodes need to be involved in a multisig transacton (e.g. when a user wants to withdraw collateral).

Documentation

Index

Constants

View Source
const (
	ValidatorStatusPending = iota
	ValidatorStatusErsatz
	ValidatorStatusTendermint
)

Variables

View Source
var (
	ErrVegaNodeAlreadyRegisterForChain = errors.New("a vega node is already registered with the blockchain node")
	ErrInvalidChainPubKey              = errors.New("invalid blockchain public key")
)
View Source
var (
	ErrTargetBlockHeightMustBeGraterThanCurrentHeight        = errors.New("target block height must be greater then current block")
	ErrNewVegaPubKeyIndexMustBeGreaterThenCurrentPubKeyIndex = errors.New("a new vega public key index must be greather then current public key index")
	ErrInvalidVegaPubKeyForNode                              = errors.New("current vega public key is invalid for node")
	ErrNodeAlreadyHasPendingKeyRotation                      = errors.New("node already has a pending key rotation")
	ErrCurrentPubKeyHashDoesNotMatch                         = errors.New("current public key hash does not match")
)
View Source
var (
	ErrUnknownValidator            = errors.New("unknown validator ID")
	ErrUnexpectedSignedBlockHeight = errors.New("unexpected signed block height")

	PerformanceIncrement        = num.DecimalFromFloat(0.1)
	DecimalOne                  = num.DecimalFromFloat(1)
	VotingPowerScalingFactor, _ = num.DecimalFromString("10000")
)
View Source
var (
	ErrResourceDuplicate            = errors.New("resource duplicate")
	ErrCheckUntilInvalid            = errors.New("invalid time to check until")
	ErrInvalidResourceIDForNodeVote = errors.New("invalid resource ID")
	ErrVoteFromNonValidator         = errors.New("vote from non validator")
	ErrDuplicateVoteFromNode        = errors.New("duplicate vote from node")
)
View Source
var ErrCurrentEthAddressDoesNotMatch = errors.New("current Ethereum address does not match")
View Source
var ErrMissingRequiredAnnounceNodeFields = errors.New("missing required announce node fields")
View Source
var (
	ErrSnapshotKeyDoesNotExist = errors.New("unknown key for witness snapshot")
)
View Source
var ValidatorStatusToName = map[ValidatorStatus]string{
	ValidatorStatusPending:    "pending",
	ValidatorStatusErsatz:     "ersatz",
	ValidatorStatusTendermint: "tendermint",
}

Functions

func CalcAntiWhalingScore

func CalcAntiWhalingScore(delegationState []*types.ValidatorData, totalStakeD num.Decimal, stakeScoreParams types.StakeScoreParams) map[string]num.Decimal

CalcAntiWhalingScore calculates the anti-whaling stake score for the validators represented in the given delegation set.

func CalcDelegation

func CalcDelegation(validators map[string]struct{}, delegationState []*types.ValidatorData) ([]*types.ValidatorData, num.Decimal)

CalcDelegation extracts the delegation of the validator set from the delegation state slice and returns the total delegation.

func CalcValidatorScore

func CalcValidatorScore(valStake, totalStake, numVal num.Decimal, stakeScoreParams types.StakeScoreParams) num.Decimal

calcValidatorScore calculates the stake based raw validator score with anti whaling.

func NewValidatorPerformance

func NewValidatorPerformance(log *logging.Logger) *validatorPerformance

func SignAnnounceNode

func SignAnnounceNode(
	an *commandspb.AnnounceNode,
	vegaSigner Signer,
	ethSigner Signer,
) error

SignAnnounceNode adds the signature for the ethereum and Vega address / pubkeys.

func VerifyAnnounceNode

func VerifyAnnounceNode(an *commandspb.AnnounceNode) error

SignAnnounceNode adds the signature for the ethereum and Vega address / pubkeys.

Types

type Broker

type Broker interface {
	Send(event events.Event)
	SendBatch(events []events.Event)
}

Broker needs no mocks.

type Commander

type Commander interface {
	Command(ctx context.Context, cmd txn.Command, payload proto.Message, f func(error), bo *backoff.ExponentialBackOff)
	CommandSync(ctx context.Context, cmd txn.Command, payload proto.Message, f func(error), bo *backoff.ExponentialBackOff)
}

type Config

type Config struct {
	// logging level
	Level encoding.LogLevel `long:"log-level"`
}

Config represents governance specific configuration.

func NewDefaultConfig

func NewDefaultConfig() Config

NewDefaultConfig creates an instance of the package specific configuration.

type ERC20Signatures

type ERC20Signatures struct {
	// contains filtered or unexported fields
}

func NewSignatures

func NewSignatures(
	log *logging.Logger,
	notary Notary,
	nw NodeWallets,
	broker Broker,
	isValidatorSetup bool,
) *ERC20Signatures

func (*ERC20Signatures) EmitNewValidatorsSignatures

func (s *ERC20Signatures) EmitNewValidatorsSignatures(
	ctx context.Context,
	validators []NodeIDAddress,
	currentTime time.Time,
	epochSeq uint64,
)

func (*ERC20Signatures) EmitPromotionsSignatures

func (s *ERC20Signatures) EmitPromotionsSignatures(
	ctx context.Context,
	currentTime time.Time,
	epochSeq uint64,
	previousState map[string]StatusAddress,
	newState map[string]StatusAddress,
)

func (*ERC20Signatures) EmitRemoveValidatorsSignatures

func (s *ERC20Signatures) EmitRemoveValidatorsSignatures(
	ctx context.Context,
	remove []NodeIDAddress,
	validators []NodeIDAddress,
	currentTime time.Time,
	epochSeq uint64,
)

func (*ERC20Signatures) SetNonce

func (s *ERC20Signatures) SetNonce(t time.Time)

type GenesisState

type GenesisState ValidatorMapping

func DefaultGenesisState

func DefaultGenesisState() GenesisState

func LoadGenesisState

func LoadGenesisState(bytes []byte) (GenesisState, error)

type MultiSigTopology

type MultiSigTopology interface {
	IsSigner(address string) bool
	ExcessSigners(addresses []string) bool
}

type NodeIDAddress

type NodeIDAddress struct {
	NodeID     string
	EthAddress string
}

type NodeWallets

type NodeWallets interface {
	GetVega() Wallet
	GetTendermintPubkey() string
	GetEthereumAddress() string
	GetEthereum() Signer
}

type NodeWalletsWrapper

type NodeWalletsWrapper struct {
	*nodewallets.NodeWallets
}

func WrapNodeWallets

func WrapNodeWallets(nw *nodewallets.NodeWallets) *NodeWalletsWrapper

func (*NodeWalletsWrapper) GetEthereum

func (w *NodeWalletsWrapper) GetEthereum() Signer

func (*NodeWalletsWrapper) GetEthereumAddress

func (w *NodeWalletsWrapper) GetEthereumAddress() string

func (*NodeWalletsWrapper) GetTendermintPubkey

func (w *NodeWalletsWrapper) GetTendermintPubkey() string

func (*NodeWalletsWrapper) GetVega

func (w *NodeWalletsWrapper) GetVega() Wallet

type Notary

type Notary interface {
	StartAggregate(resID string, kind types.NodeSignatureKind, signature []byte)
	IsSigned(ctx context.Context, id string, kind types.NodeSignatureKind) ([]types.NodeSignature, bool)
	OfferSignatures(kind types.NodeSignatureKind, f func(resources string) []byte)
}

Notary ...

type PendingEthereumKeyRotation

type PendingEthereumKeyRotation struct {
	NodeID     string
	NewAddress string
}

type PendingKeyRotation

type PendingKeyRotation struct {
	BlockHeight uint64
	NodeID      string
	NewPubKey   string
	NewKeyIndex uint32
}

type Resource

type Resource interface {
	GetID() string
	Check() error
}

type Signatures

type Signatures interface {
	EmitPromotionsSignatures(
		ctx context.Context,
		currentTime time.Time,
		epochSeq uint64,
		previousState map[string]StatusAddress,
		newState map[string]StatusAddress,
	)
	EmitNewValidatorsSignatures(
		ctx context.Context,
		validators []NodeIDAddress,
		currentTime time.Time,
		epochSeq uint64,
	)
	EmitRemoveValidatorsSignatures(
		ctx context.Context,
		remove []NodeIDAddress,
		validators []NodeIDAddress,
		currentTime time.Time,
		epochSeq uint64,
	)
	SetNonce(t time.Time)
}

type Signer

type Signer interface {
	Sign([]byte) ([]byte, error)
	Algo() string
}

type StatusAddress

type StatusAddress struct {
	Status     ValidatorStatus
	EthAddress string
}

type TimeService

type TimeService interface {
	GetTimeNow() time.Time
}

type Topology

type Topology struct {
	// contains filtered or unexported fields
}

func NewTopology

func NewTopology(
	log *logging.Logger, cfg Config, wallets NodeWallets, broker Broker, isValidatorSetup bool, cmd Commander, msTopology MultiSigTopology, timeService TimeService,
) *Topology

func (*Topology) AddForwarder

func (t *Topology) AddForwarder(pubKey string)

AddForwarder records the times that a validator fowards an eth event.

func (*Topology) AddKeyRotate

func (t *Topology) AddKeyRotate(ctx context.Context, nodeID string, currentBlockHeight uint64, kr *commandspb.KeyRotateSubmission) error

func (*Topology) AddNewNode

func (t *Topology) AddNewNode(ctx context.Context, nr *commandspb.AnnounceNode, status ValidatorStatus) error

func (*Topology) AllNodeIDs

func (t *Topology) AllNodeIDs() []string

AllNodeIDs returns all the validators node IDs keys.

func (*Topology) AllVegaPubKeys

func (t *Topology) AllVegaPubKeys() []string

AllVegaPubKeys returns all the validators vega public keys.

func (*Topology) BeginBlock

func (t *Topology) BeginBlock(ctx context.Context, req abcitypes.RequestBeginBlock)

func (*Topology) Checkpoint

func (t *Topology) Checkpoint() ([]byte, error)

func (*Topology) Get

func (t *Topology) Get(key string) *ValidatorData

Get returns validator data based on validator master public key.

func (*Topology) GetAllPendingKeyRotations

func (t *Topology) GetAllPendingKeyRotations() []*PendingKeyRotation

func (*Topology) GetPendingEthereumKeyRotation

func (t *Topology) GetPendingEthereumKeyRotation(blockHeight uint64, nodeID string) *PendingEthereumKeyRotation

func (*Topology) GetPendingKeyRotation

func (t *Topology) GetPendingKeyRotation(blockHeight uint64, nodeID string) *PendingKeyRotation

func (*Topology) GetRewardsScores

func (t *Topology) GetRewardsScores(ctx context.Context, epochSeq string, delegationState []*types.ValidatorData, stakeScoreParams types.StakeScoreParams) (*types.ScoreData, *types.ScoreData)

GetRewardsScores returns the reward scores (raw, performance, multisig, validator_score, and normalised) for tm and ersatz validaor sets.

func (*Topology) GetState

func (t *Topology) GetState(k string) ([]byte, []types.StateProvider, error)

func (*Topology) GetValidatorPowerUpdates

func (t *Topology) GetValidatorPowerUpdates() []tmtypes.ValidatorUpdate

GetValidatorPowerUpdates returns the voting power changes if this is the first block of an epoch.

func (*Topology) HasChanged

func (t *Topology) HasChanged(k string) bool

func (*Topology) IsSelfTendermintValidator

func (t *Topology) IsSelfTendermintValidator() bool

func (*Topology) IsTendermintValidator

func (t *Topology) IsTendermintValidator(pubkey string) (ok bool)

IsValidatorVegaPubKey returns true if the given key is a Vega validator public key and the validators is of status Tendermint.

func (*Topology) IsValidator

func (t *Topology) IsValidator() bool

func (*Topology) IsValidatorNodeID

func (t *Topology) IsValidatorNodeID(nodeID string) bool

IsValidatorNodeID takes a nodeID and returns true if the node is a validator node.

func (*Topology) IsValidatorVegaPubKey

func (t *Topology) IsValidatorVegaPubKey(pubkey string) (ok bool)

IsValidatorVegaPubKey returns true if the given key is a Vega validator public key.

func (*Topology) Keys

func (t *Topology) Keys() []string

func (*Topology) Len

func (t *Topology) Len() int

Len return the number of validators with status Tendermint, the only validators that matter.

func (*Topology) Load

func (t *Topology) Load(ctx context.Context, data []byte) error

func (*Topology) LoadState

func (t *Topology) LoadState(ctx context.Context, p *types.Payload) ([]types.StateProvider, error)

func (*Topology) LoadValidatorsOnGenesis

func (t *Topology) LoadValidatorsOnGenesis(ctx context.Context, rawstate []byte) (err error)

func (*Topology) Name

func (t *Topology) Name() types.CheckpointName

func (*Topology) Namespace

func (t *Topology) Namespace() types.SnapshotNamespace

func (*Topology) NotifyOnKeyChange

func (t *Topology) NotifyOnKeyChange(fns ...func(ctx context.Context, oldPubKey, newPubKey string))

func (*Topology) NumberOfTendermintValidators

func (t *Topology) NumberOfTendermintValidators() uint

func (*Topology) OnEpochEvent

func (t *Topology) OnEpochEvent(ctx context.Context, epoch types.Epoch)

func (*Topology) OnEpochLengthUpdate

func (t *Topology) OnEpochLengthUpdate(ctx context.Context, l time.Duration) error

OnEpochLengthUpdate updates the duration of an epoch - which is used to calculate the number of blocks to keep a malperforming validators. The number of blocks is calculated as 10 epochs x duration of epoch in seconds, assuming block time is 1s.

func (*Topology) OnEpochRestore

func (t *Topology) OnEpochRestore(_ context.Context, epoch types.Epoch)

OnEpochRestore is the epochtime service telling us the restored epoch data.

func (*Topology) ProcessAnnounceNode

func (t *Topology) ProcessAnnounceNode(
	ctx context.Context, an *commandspb.AnnounceNode,
) error

func (*Topology) ProcessValidatorHeartbeat

func (t *Topology) ProcessValidatorHeartbeat(ctx context.Context, vh *commandspb.ValidatorHeartbeat,
	verifyVegaSig func(message, signature, pubkey []byte) error,
	verifyEthSig func(message, signature []byte, hexAddress string) error,
) error

ProcessValidatorHeartbeat is verifying the signatures from a validator's transaction and records the status.

func (*Topology) RecalcValidatorSet

func (t *Topology) RecalcValidatorSet(ctx context.Context, epochSeq string, delegationState []*types.ValidatorData, stakeScoreParams types.StakeScoreParams)

RecalcValidatorSet is called at the before a new epoch is started to update the validator sets. the delegation state corresponds to the epoch about to begin.

func (*Topology) ReloadConf

func (t *Topology) ReloadConf(cfg Config)

ReloadConf updates the internal configuration.

func (*Topology) RotateEthereumKey

func (t *Topology) RotateEthereumKey(
	ctx context.Context,
	publicKey string,
	currentBlockHeight uint64,
	kr *commandspb.EthereumKeyRotateSubmission,
) error

func (*Topology) SelfNodeID

func (t *Topology) SelfNodeID() string

func (*Topology) SelfVegaPubKey

func (t *Topology) SelfVegaPubKey() string

func (*Topology) SetIsValidator

func (t *Topology) SetIsValidator()

SetIsValidator will set the flag for `self` so that it is considered a real validator for example, when a node has announced itself and is accepted as a PENDING validator.

func (*Topology) SetNotary

func (t *Topology) SetNotary(notary Notary)

SetNotary this is not good, the topology depends on the notary which in return also depends on the topology... Luckily they do not require recursive calls as for each calls are one offs... anyway we may want to extract the code requiring the notary somewhere else or have different pattern somehow...

func (*Topology) SetSignatures

func (t *Topology) SetSignatures(signatures Signatures)

SetSignatures this is not good, same issue as for SetNotary method. This is only used as a helper for testing..

func (*Topology) Stopped

func (t *Topology) Stopped() bool

func (*Topology) UpdateErsatzValidatorsFactor

func (t *Topology) UpdateErsatzValidatorsFactor(_ context.Context, ersatzFactor num.Decimal) error

UpdateErsatzValidatorsFactor updates the ratio between the tendermint validators list and the ersatz validators list.

func (*Topology) UpdateMinimumEthereumEventsForNewValidator

func (t *Topology) UpdateMinimumEthereumEventsForNewValidator(_ context.Context, minimumEthereumEventsForNewValidator *num.Uint) error

UpdateMinimumEthereumEventsForNewValidator updates the minimum number of events forwarded by / voted for by the joining validator.

func (*Topology) UpdateMinimumRequireSelfStake

func (t *Topology) UpdateMinimumRequireSelfStake(_ context.Context, minStake num.Decimal) error

UpdateMinimumRequireSelfStake updates the minimum requires stake for a validator.

func (*Topology) UpdateNumberEthMultisigSigners

func (t *Topology) UpdateNumberEthMultisigSigners(_ context.Context, numberEthMultisigSigners *num.Uint) error

UpdateNumberEthMultisigSigners updates the required number of multisig signers.

func (*Topology) UpdateNumberOfTendermintValidators

func (t *Topology) UpdateNumberOfTendermintValidators(_ context.Context, noValidators *num.Uint) error

UpdateNumberOfTendermintValidators updates with the quota for tendermint validators. It updates accordingly the number of slots for ersatzvalidators.

func (*Topology) UpdateValidatorIncumbentBonusFactor

func (t *Topology) UpdateValidatorIncumbentBonusFactor(_ context.Context, incumbentBonusFactor num.Decimal) error

UpdateValidatorIncumbentBonusFactor updates with the net param for incumbent bonus, saved as incumbentBonusFactor + 1.

type ValidatorData

type ValidatorData struct {
	ID              string `json:"id"`
	VegaPubKey      string `json:"vega_pub_key"`
	VegaPubKeyIndex uint32 `json:"vega_pub_key_index"`
	EthereumAddress string `json:"ethereum_address"`
	TmPubKey        string `json:"tm_pub_key"`
	InfoURL         string `json:"info_url"`
	Country         string `json:"country"`
	Name            string `json:"name"`
	AvatarURL       string `json:"avatar_url"`
	FromEpoch       uint64 `json:"from_epoch"`
}

func (ValidatorData) HashVegaPubKey

func (v ValidatorData) HashVegaPubKey() (string, error)

HashVegaPubKey returns hash VegaPubKey encoded as hex string.

func (ValidatorData) IsValid

func (v ValidatorData) IsValid() bool

type ValidatorMapping

type ValidatorMapping map[string]ValidatorData

ValidatorMapping maps a tendermint pubkey with a vega pubkey.

type ValidatorPerformance

type ValidatorPerformance interface {
	ValidatorPerformanceScore(address string, votingPower, totalPower int64) num.Decimal
	BeginBlock(ctx context.Context, proposer string)
	Serialize() *v1.ValidatorPerformance
	Deserialize(*v1.ValidatorPerformance)
	Reset()
}

type ValidatorStatus

type ValidatorStatus int32

type ValidatorTopology

type ValidatorTopology interface {
	Len() int
	IsValidator() bool
	SelfVegaPubKey() string
	AllNodeIDs() []string
	IsValidatorVegaPubKey(string) bool
	IsTendermintValidator(string) bool
}

type Verifier

type Verifier interface {
	Verify([]byte, []byte) error
}

type Wallet

type Wallet interface {
	PubKey() crypto.PublicKey
	ID() crypto.PublicKey
	Signer
}

type Witness

type Witness struct {
	// contains filtered or unexported fields
}

func NewWitness

func NewWitness(log *logging.Logger, cfg Config, top ValidatorTopology, cmd Commander, tsvc TimeService) (w *Witness)

func (*Witness) AddNodeCheck

func (w *Witness) AddNodeCheck(_ context.Context, nv *commandspb.NodeVote, key crypto.PublicKey) error

AddNodeCheck registers a vote from a validator node for a given resource.

func (*Witness) GetState

func (w *Witness) GetState(k string) ([]byte, []types.StateProvider, error)

func (*Witness) HasChanged

func (w *Witness) HasChanged(k string) bool

func (*Witness) Keys

func (w *Witness) Keys() []string

func (*Witness) LoadState

func (w *Witness) LoadState(ctx context.Context, p *types.Payload) ([]types.StateProvider, error)

func (*Witness) Namespace

func (w *Witness) Namespace() types.SnapshotNamespace

func (*Witness) OnDefaultValidatorsVoteRequiredUpdate

func (w *Witness) OnDefaultValidatorsVoteRequiredUpdate(ctx context.Context, d num.Decimal) error

func (*Witness) OnTick

func (w *Witness) OnTick(ctx context.Context, t time.Time)

func (*Witness) ReloadConf

func (w *Witness) ReloadConf(cfg Config)

ReloadConf updates the internal configuration.

func (*Witness) RestoreResource

func (w *Witness) RestoreResource(r Resource, cb func(interface{}, bool)) error

func (*Witness) StartCheck

func (w *Witness) StartCheck(
	r Resource,
	cb func(interface{}, bool),
	checkUntil time.Time,
) error

func (*Witness) Stop

func (w *Witness) Stop()

func (*Witness) Stopped

func (w *Witness) Stopped() bool

Directories

Path Synopsis
mocks
Package mocks is a generated GoMock package.
Package mocks is a generated GoMock package.
Package mocks is a generated GoMock package.
Package mocks is a generated GoMock package.

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