fluxmonitorv2

package
v2.2.0 Latest Latest
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 Go to latest Published: Jun 12, 2023 License: MIT Imports: 37 Imported by: 0

Documentation

Index

Constants

View Source 
const (
	PriorityFlagChangedLog   uint = 0
	PriorityNewRoundLog      uint = 1
	PriorityAnswerUpdatedLog uint = 2
)
View Source 
const DefaultHibernationPollPeriod = 24 * time.Hour

DefaultHibernationPollPeriod defines the hibernation polling period

View Source 
const MinFundedRounds int64 = 3

MinFundedRounds defines the minimum number of rounds that needs to be paid to oracles on a contract

Variables

View Source 
var (
	// ErrNotEligible defines when the round is not eligible for submission
	ErrNotEligible = errors.New("not eligible to submit")
	// ErrUnderfunded defines when the aggregator does not have sufficient funds
	ErrUnderfunded = errors.New("aggregator is underfunded")
	// ErrPaymentTooLow defines when the round payment is too low
	ErrPaymentTooLow = errors.New("round payment amount < minimum contract payment")
)
View Source 
var FluxAggregatorABI = evmtypes.MustGetABI(flux_aggregator_wrapper.FluxAggregatorABI)

FluxAggregatorABI initializes the Flux Aggregator ABI

Functions

func MinimumPollingInterval 

func MinimumPollingInterval(c Config) time.Duration

MinimumPollingInterval returns the minimum duration between polling ticks

func ValidatedFluxMonitorSpec 

func ValidatedFluxMonitorSpec(config ValidationConfig, ts string) (job.Job, error)

Types

type Config 

type Config interface {
	DefaultHTTPTimeout() models.Duration
	FlagsContractAddress() string
	MinimumContractPayment() *assets.Link
	EvmGasLimitDefault() uint32
	EvmGasLimitFMJobType() *uint32
	EvmMaxQueuedTransactions() uint64
	FMDefaultTransactionQueueDepth() uint32
	pg.QConfig
}

Config defines the Flux Monitor configuration.

type ContractFlags 

type ContractFlags struct {
	flags_wrapper.FlagsInterface
}

ContractFlags wraps the a contract

func (*ContractFlags) Contract 

func (f *ContractFlags) Contract() flags_wrapper.FlagsInterface

Contract returns the flags contract

func (*ContractFlags) ContractExists 

func (f *ContractFlags) ContractExists() bool

ContractExists returns whether a flag contract exists

func (*ContractFlags) IsLowered 

func (f *ContractFlags) IsLowered(contractAddr common.Address) (bool, error)

IsLowered determines whether the flag is lowered for a given contract. If a contract does not exist, it is considered to be lowered

type ContractSubmitter 

type ContractSubmitter interface {
	Submit(roundID *big.Int, submission *big.Int, qopts ...pg.QOpt) error
}

ContractSubmitter defines an interface to submit an eth tx.

type Delegate 

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

Delegate represents a Flux Monitor delegate

func NewDelegate 

func NewDelegate(
	ethKeyStore keystore.Eth,
	jobORM job.ORM,
	pipelineORM pipeline.ORM,
	pipelineRunner pipeline.Runner,
	db *sqlx.DB,
	chainSet evm.ChainSet,
	lggr logger.Logger,
) *Delegate

NewDelegate constructs a new delegate

func (*Delegate) AfterJobCreated 

func (d *Delegate) AfterJobCreated(spec job.Job)

func (*Delegate) BeforeJobCreated 

func (d *Delegate) BeforeJobCreated(spec job.Job)

func (*Delegate) BeforeJobDeleted 

func (d *Delegate) BeforeJobDeleted(spec job.Job)

func (*Delegate) JobType 

func (d *Delegate) JobType() job.Type

JobType implements the job.Delegate interface

func (*Delegate) OnDeleteJob 

func (d *Delegate) OnDeleteJob(spec job.Job, q pg.Queryer) error

func (*Delegate) ServicesForSpec 

func (d *Delegate) ServicesForSpec(jb job.Job) (services []job.ServiceCtx, err error)

ServicesForSpec returns the flux monitor service for the job spec

type DeviationChecker 

type DeviationChecker struct {
	Thresholds DeviationThresholds
	// contains filtered or unexported fields
}

DeviationChecker checks the deviation of the next answer against the current answer.

func NewDeviationChecker 

func NewDeviationChecker(rel, abs float64, lggr logger.Logger) *DeviationChecker

NewDeviationChecker constructs a new deviation checker with thresholds.

func NewZeroDeviationChecker 

func NewZeroDeviationChecker(lggr logger.Logger) *DeviationChecker

NewZeroDeviationChecker constructs a new deviation checker with 0 as thresholds.

func (*DeviationChecker) OutsideDeviation 

func (c *DeviationChecker) OutsideDeviation(curAnswer, nextAnswer decimal.Decimal) bool

OutsideDeviation checks whether the next price is outside the threshold. If both thresholds are zero (default value), always returns true.

type DeviationThresholds 

type DeviationThresholds struct {
	Rel float64 // Relative change required, i.e. |new-old|/|old| >= Rel
	Abs float64 // Absolute change required, i.e. |new-old| >= Abs
}

DeviationThresholds carries parameters used by the threshold-trigger logic

type Flags 

type Flags interface {
	ContractExists() bool
	IsLowered(contractAddr common.Address) (bool, error)
	Address() common.Address
	ParseLog(log types.Log) (generated.AbigenLog, error)
}

func NewFlags 

func NewFlags(addrHex string, ethClient evmclient.Client) (Flags, error)

NewFlags constructs a new Flags from a flags contract address

type FluxAggregatorContractSubmitter 

type FluxAggregatorContractSubmitter struct {
	flux_aggregator_wrapper.FluxAggregatorInterface
	// contains filtered or unexported fields
}

FluxAggregatorContractSubmitter submits the polled answer in an eth tx.

func NewFluxAggregatorContractSubmitter 

func NewFluxAggregatorContractSubmitter(
	contract flux_aggregator_wrapper.FluxAggregatorInterface,
	orm ORM,
	keyStore KeyStoreInterface,
	gasLimit uint32,
	forwardingAllowed bool,
	chainID *big.Int,
) *FluxAggregatorContractSubmitter

NewFluxAggregatorContractSubmitter constructs a new NewFluxAggregatorContractSubmitter

func (*FluxAggregatorContractSubmitter) Submit 

func (c *FluxAggregatorContractSubmitter) Submit(roundID *big.Int, submission *big.Int, qopts ...pg.QOpt) error

Submit submits the answer by writing a EthTx for the txmgr to pick up

type FluxMonitor 

type FluxMonitor struct {
	utils.StartStopOnce
	// contains filtered or unexported fields
}

FluxMonitor polls external price adapters via HTTP to check for price swings.

func NewFluxMonitor 

func NewFluxMonitor(
	pipelineRunner pipeline.Runner,
	jobSpec job.Job,
	spec pipeline.Spec,
	q pg.Q,
	orm ORM,
	jobORM job.ORM,
	pipelineORM pipeline.ORM,
	keyStore KeyStoreInterface,
	pollManager *PollManager,
	paymentChecker *PaymentChecker,
	contractAddress common.Address,
	contractSubmitter ContractSubmitter,
	deviationChecker *DeviationChecker,
	submissionChecker *SubmissionChecker,
	flags Flags,
	fluxAggregator flux_aggregator_wrapper.FluxAggregatorInterface,
	logBroadcaster log.Broadcaster,
	fmLogger logger.Logger,
	chainID *big.Int,
) (*FluxMonitor, error)

NewFluxMonitor returns a new instance of PollingDeviationChecker.

func NewFromJobSpec 

func NewFromJobSpec(
	jobSpec job.Job,
	db *sqlx.DB,
	orm ORM,
	jobORM job.ORM,
	pipelineORM pipeline.ORM,
	keyStore KeyStoreInterface,
	ethClient evmclient.Client,
	logBroadcaster log.Broadcaster,
	pipelineRunner pipeline.Runner,
	cfg Config,
	lggr logger.Logger,
) (*FluxMonitor, error)

NewFromJobSpec constructs an instance of FluxMonitor with sane defaults and validation.

func (*FluxMonitor) Close 

func (fm *FluxMonitor) Close() error

Close implements the job.Service interface. It stops this instance from polling, cleaning up resources.

func (*FluxMonitor) HandleLog 

func (fm *FluxMonitor) HandleLog(broadcast log.Broadcast)

HandleLog processes the contract logs

func (*FluxMonitor) IsHibernating 

func (fm *FluxMonitor) IsHibernating() bool

func (*FluxMonitor) JobID 

func (fm *FluxMonitor) JobID() int32

JobID implements the listener.Listener interface.

func (*FluxMonitor) SetOracleAddress 

func (fm *FluxMonitor) SetOracleAddress() error

SetOracleAddress sets the oracle address which matches the node's keys. If none match, it uses the first available key

func (*FluxMonitor) Start 

func (fm *FluxMonitor) Start(context.Context) error

Start implements the job.Service interface. It begins the CSP consumer in a single goroutine to poll the price adapters and listen to NewRound events.

type FluxMonitorRoundStatsV2 

type FluxMonitorRoundStatsV2 struct {
	ID              uint64
	PipelineRunID   null.Int64
	Aggregator      common.Address
	RoundID         uint32
	NumNewRoundLogs uint64
	NumSubmissions  uint64
}

FluxMonitorRoundStatsV2 defines the stats for a round

type KeyStore 

type KeyStore struct {
	keystore.Eth
}

KeyStore implements KeyStoreInterface

func NewKeyStore 

func NewKeyStore(ks keystore.Eth) *KeyStore

NewKeyStore initializes a new keystore

type KeyStoreInterface 

type KeyStoreInterface interface {
	EnabledKeysForChain(chainID *big.Int) ([]ethkey.KeyV2, error)
	GetRoundRobinAddress(chainID *big.Int, addrs ...common.Address) (common.Address, error)
}

KeyStoreInterface defines an interface to interact with the keystore

type ORM 

type ORM interface {
	MostRecentFluxMonitorRoundID(aggregator common.Address) (uint32, error)
	DeleteFluxMonitorRoundsBackThrough(aggregator common.Address, roundID uint32) error
	FindOrCreateFluxMonitorRoundStats(aggregator common.Address, roundID uint32, newRoundLogs uint) (FluxMonitorRoundStatsV2, error)
	UpdateFluxMonitorRoundStats(aggregator common.Address, roundID uint32, runID int64, newRoundLogsAddition uint, qopts ...pg.QOpt) error
	CreateEthTransaction(fromAddress, toAddress common.Address, payload []byte, gasLimit uint32, qopts ...pg.QOpt) error
	CountFluxMonitorRoundStats() (count int, err error)
}

ORM defines an interface for database commands related to Flux Monitor v2

func NewORM 

func NewORM(db *sqlx.DB, lggr logger.Logger, cfg pg.QConfig, txm transmitter, strategy types.TxStrategy, checker txmgr.EvmTransmitCheckerSpec) ORM

NewORM initializes a new ORM

type PaymentChecker 

type PaymentChecker struct {
	// The minimum amount for a payment set in the ENV Var
	MinContractPayment *assets.Link
	// The minimum amount for a payment set in the job
	MinJobPayment *assets.Link
}

PaymentChecker provides helper functions to check whether payments are valid

func NewPaymentChecker 

func NewPaymentChecker(minContractPayment, minJobPayment *assets.Link) *PaymentChecker

NewPaymentChecker constructs a new payment checker

func (*PaymentChecker) SufficientFunds 

func (c *PaymentChecker) SufficientFunds(availableFunds *big.Int, paymentAmount *big.Int, oracleCount uint8) bool

SufficientFunds checks if the contract has sufficient funding to pay all the oracles on a contract for a minimum number of rounds, based on the payment amount in the contract

func (*PaymentChecker) SufficientPayment 

func (c *PaymentChecker) SufficientPayment(payment *big.Int) bool

SufficientPayment checks if the available payment is enough to submit an answer. It compares the payment amount on chain with the min payment amount listed in the job / ENV var.

type PollManager 

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

PollManager manages the tickers/timers which cause the Flux Monitor to start a poll. It contains 4 types of tickers and timers which determine when to initiate a poll

HibernationTimer - The PollManager can be set to hibernate, which disables all other ticker/timers, and enables the hibernation timer. Upon expiry of the hibernation timer, a poll is requested. When the PollManager is awakened, the other tickers and timers are enabled with the current round state, and the hibernation timer is disabled.

PollTicker - The poll ticker requests a poll at a given interval defined in PollManagerConfig. Disabling this through config will permanently disable the ticker, even through a resets.

IdleTimer - The idle timer requests a poll after no poll has taken place since the last round was start and the IdleTimerPeriod has elapsed. This can also be known as a heartbeat.

RoundTimer - The round timer requests a poll when the round state provided by the contract has timed out.

RetryTicker - The retry ticker requests a poll with a backoff duration. This is started when the idle timer fails, and will poll with a maximum backoff of either 1 hour or the idle timer period if it is lower

func NewPollManager 

func NewPollManager(cfg PollManagerConfig, logger logger.Logger) (*PollManager, error)

NewPollManager initializes a new PollManager

func (*PollManager) Awaken 

func (pm *PollManager) Awaken(roundState flux_aggregator_wrapper.OracleRoundState)

Awaken sets hibernation to false, stops the hibernation timer and starts all other tickers

func (*PollManager) DrumbeatTicks 

func (pm *PollManager) DrumbeatTicks() <-chan time.Time

DrumbeatTicks ticks on a cron schedule when the drumbeat ticker is activated

func (*PollManager) Hibernate 

func (pm *PollManager) Hibernate()

Hibernate sets hibernation to true, starts the hibernation timer and stops all other ticker/timers

func (*PollManager) HibernationTimerTicks 

func (pm *PollManager) HibernationTimerTicks() <-chan time.Time

HibernationTimerTicks ticks after a given period

func (*PollManager) IdleTimerTicks 

func (pm *PollManager) IdleTimerTicks() <-chan time.Time

IdleTimerTicks ticks after a given period

func (*PollManager) Poll 

func (pm *PollManager) Poll() <-chan PollRequest

Poll returns a channel which the manager will use to send polling requests

Note: In the future, we should change the tickers above to send their request through this channel to simplify the listener.

func (*PollManager) PollTickerTicks 

func (pm *PollManager) PollTickerTicks() <-chan time.Time

PollTickerTicks ticks on a given interval

func (*PollManager) Reset 

func (pm *PollManager) Reset(roundState flux_aggregator_wrapper.OracleRoundState)

Reset resets the timers except for the hibernation timer. Will not reset if hibernating.

func (*PollManager) ResetIdleTimer 

func (pm *PollManager) ResetIdleTimer(roundStartedAtUTC uint64)

ResetIdleTimer resets the idle timer unless hibernating

func (*PollManager) RetryTickerTicks 

func (pm *PollManager) RetryTickerTicks() <-chan time.Time

RetryTickerTicks ticks with a backoff when the retry ticker is activated

func (*PollManager) RoundTimerTicks 

func (pm *PollManager) RoundTimerTicks() <-chan time.Time

RoundTimerTicks ticks after a given period

func (*PollManager) ShouldPerformInitialPoll 

func (pm *PollManager) ShouldPerformInitialPoll() bool

ShouldPerformInitialPoll determines whether to perform an initial poll

func (*PollManager) Start 

func (pm *PollManager) Start(hibernate bool, roundState flux_aggregator_wrapper.OracleRoundState)

Start initializes all the timers and determines whether to go into immediate hibernation.

func (*PollManager) StartRetryTicker 

func (pm *PollManager) StartRetryTicker() bool

StartRetryTicker starts the retry ticker

func (*PollManager) Stop 

func (pm *PollManager) Stop()

Stop stops all timers/tickers

func (*PollManager) StopRetryTicker 

func (pm *PollManager) StopRetryTicker()

StopRetryTicker stops the retry ticker

type PollManagerConfig 

type PollManagerConfig struct {
	IsHibernating           bool
	PollTickerInterval      time.Duration
	PollTickerDisabled      bool
	IdleTimerPeriod         time.Duration
	IdleTimerDisabled       bool
	DrumbeatSchedule        string
	DrumbeatEnabled         bool
	DrumbeatRandomDelay     time.Duration
	HibernationPollPeriod   time.Duration
	MinRetryBackoffDuration time.Duration
	MaxRetryBackoffDuration time.Duration
}

type PollRequest 

type PollRequest struct {
	Type      PollRequestType
	Timestamp time.Time
}

PollRequest defines a request to initiate a poll

type PollRequestType 

type PollRequestType int

PollRequestType defines which method was used to request a poll 

const (
	PollRequestTypeUnknown PollRequestType = iota
	PollRequestTypeInitial
	PollRequestTypePoll
	PollRequestTypeIdle
	PollRequestTypeRound
	PollRequestTypeHibernation
	PollRequestTypeRetry
	PollRequestTypeAwaken
	PollRequestTypeDrumbeat
)

type SubmissionChecker 

type SubmissionChecker struct {
	Min decimal.Decimal
	Max decimal.Decimal
}

SubmissionChecker checks whether an answer is inside the allowable range.

func NewSubmissionChecker 

func NewSubmissionChecker(min *big.Int, max *big.Int) *SubmissionChecker

NewSubmissionChecker initializes a new SubmissionChecker

func (*SubmissionChecker) IsValid 

func (c *SubmissionChecker) IsValid(answer decimal.Decimal) bool

IsValid checks if the submission is between the min and max

type ValidationConfig 

type ValidationConfig interface {
	DefaultHTTPTimeout() models.Duration
}

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