fluxmonitorv2

package
v0.10.6 Latest Latest
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 Go to latest Published: May 10, 2021 License: MIT Imports: 29 Imported by: 0

Documentation

Index

Constants

View Source 
const (
	PriorityFlagChangedLog   uint = 0
	PriorityNewRoundLog      uint = 1
	PriorityAnswerUpdatedLog uint = 2
)
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 = eth.MustGetABI(flux_aggregator_wrapper.FluxAggregatorABI)

FluxAggregatorABI initializes the Flux Aggregator ABI

Functions

func NewORM added in v0.10.3 

func NewORM(db *gorm.DB) *orm

NewORM initializes a new ORM

func ValidatedFluxMonitorSpec 

func ValidatedFluxMonitorSpec(config *coreorm.Config, ts string) (job.Job, error)

Types

type Config added in v0.10.3 

type Config struct {
	DefaultHTTPTimeout         time.Duration
	FlagsContractAddress       string
	MinContractPayment         *assets.Link
	EthGasLimit                uint64
	MaxUnconfirmedTransactions uint64
}

Config defines the Flux Monitor configuration.

func (*Config) MinimumPollingInterval added in v0.10.3 

func (c *Config) MinimumPollingInterval() time.Duration

MinimumPollingInterval returns the minimum duration between polling ticks

type ContractSubmitter added in v0.10.3 

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

ContractSubmitter defines an interface to submit an eth tx.

type Delegate added in v0.9.10 

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

Delegate represents a Flux Monitor delegate

func NewDelegate added in v0.9.10 

func NewDelegate(
	store *corestore.Store,
	jobORM job.ORM,
	pipelineORM pipeline.ORM,
	pipelineRunner pipeline.Runner,
	db *gorm.DB,
	ethClient eth.Client,
	logBroadcaster log.Broadcaster,
	cfg Config,
) *Delegate

NewDelegate constructs a new delegate

func (*Delegate) JobType added in v0.9.10 

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

JobType implements the job.Delegate interface

func (*Delegate) ServicesForSpec added in v0.9.10 

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

ServicesForSpec returns the flux monitor service for the job spec

type DeviationChecker added in v0.10.3 

type DeviationChecker struct {
	Thresholds DeviationThresholds
}

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

func NewDeviationChecker added in v0.10.3 

func NewDeviationChecker(rel, abs float64) *DeviationChecker

NewDeviationChecker constructs a new deviation checker with thresholds.

func NewZeroDeviationChecker added in v0.10.3 

func NewZeroDeviationChecker() *DeviationChecker

NewZeroDeviationChecker constructs a new deviation checker with 0 as thresholds.

func (*DeviationChecker) OutsideDeviation added in v0.10.3 

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 added in v0.10.3 

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 added in v0.10.3 

type Flags struct {
	flags_wrapper.FlagsInterface
}

Flags wraps the a contract

func NewFlags added in v0.10.3 

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

NewFlags constructs a new Flags from a flags contract address

func (*Flags) Contract added in v0.10.3 

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

Contract returns the flags contract

func (*Flags) ContractExists added in v0.10.3 

func (f *Flags) ContractExists() bool

ContractExists returns whether a flag contract exists

func (*Flags) IsLowered added in v0.10.3 

func (f *Flags) 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 FluxAggregatorContractSubmitter added in v0.10.3 

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

FluxAggregatorContractSubmitter submits the polled answer in an eth tx.

func NewFluxAggregatorContractSubmitter added in v0.10.3 

func NewFluxAggregatorContractSubmitter(
	contract flux_aggregator_wrapper.FluxAggregatorInterface,
	orm ORM,
	keyStore KeyStoreInterface,
	gasLimit uint64,
	maxUnconfirmedTransactions uint64,
) *FluxAggregatorContractSubmitter

NewFluxAggregatorContractSubmitter constructs a new NewFluxAggregatorContractSubmitter

func (*FluxAggregatorContractSubmitter) Submit added in v0.10.3 

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

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

type FluxMonitor added in v0.10.3 

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

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

func NewFluxMonitor added in v0.10.3 

func NewFluxMonitor(
	pipelineRun PipelineRun,
	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,
	precision int32,
	fmLogger *logger.Logger,
) (*FluxMonitor, error)

NewFluxMonitor returns a new instance of PollingDeviationChecker.

func NewFromJobSpec added in v0.10.3 

func NewFromJobSpec(
	jobSpec job.Job,
	orm ORM,
	jobORM job.ORM,
	pipelineORM pipeline.ORM,
	keyStore KeyStoreInterface,
	ethClient eth.Client,
	logBroadcaster log.Broadcaster,
	pipelineRunner pipeline.Runner,
	cfg Config,
) (*FluxMonitor, error)

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

func (*FluxMonitor) Close added in v0.10.3 

func (fm *FluxMonitor) Close() error

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

func (*FluxMonitor) HandleLog added in v0.10.3 

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

HandleLog processes the contract logs

func (*FluxMonitor) IsHibernating added in v0.10.4 

func (fm *FluxMonitor) IsHibernating() bool

func (*FluxMonitor) IsV2Job added in v0.10.3 

func (fm *FluxMonitor) IsV2Job() bool

IsV2Job implements the listener.Listener interface.

Returns true as this is a v2 job

func (*FluxMonitor) JobID added in v0.10.3 

func (fm *FluxMonitor) JobID() models.JobID

JobID implements the listener.Listener interface.

Since we don't have a v1 ID, we return a new v1 job id to satisfy the interface. This should not cause a problem as the log broadcaster will check if it is a v2 job before attempting to use this job id

func (*FluxMonitor) JobIDV2 added in v0.10.3 

func (fm *FluxMonitor) JobIDV2() int32

JobIDV2 implements the listener.Listener interface.

Returns the v2 job id

func (*FluxMonitor) SetOracleAddress added in v0.10.3 

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 added in v0.10.3 

func (fm *FluxMonitor) Start() 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 added in v0.10.3 

type FluxMonitorRoundStatsV2 struct {
	ID              uint64         `gorm:"primary key;not null;auto_increment"`
	PipelineRunID   null.Int64     `gorm:"default:null"`
	Aggregator      common.Address `gorm:"not null"`
	RoundID         uint32         `gorm:"not null"`
	NumNewRoundLogs uint64         `gorm:"not null;default 0"`
	NumSubmissions  uint64         `gorm:"not null;default 0"`
}

FluxMonitorRoundStatsV2 defines the stats for a round

type KeyStore added in v0.10.3 

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

KeyStore implements KeyStoreInterface

func NewKeyStore added in v0.10.3 

func NewKeyStore(store *corestore.Store) *KeyStore

NewKeyStore initializes a new keystore

func (*KeyStore) Accounts added in v0.10.3 

func (ks *KeyStore) Accounts() []accounts.Account

Accounts gets the node's accounts from the keystore

func (*KeyStore) GetRoundRobinAddress added in v0.10.3 

func (ks *KeyStore) GetRoundRobinAddress() (common.Address, error)

GetRoundRobinAddress queries the database for the address of a random ethereum key derived from the id.

type KeyStoreInterface added in v0.10.3 

type KeyStoreInterface interface {
	Accounts() []accounts.Account
	GetRoundRobinAddress() (common.Address, error)
}

KeyStoreInterface defines an interface to interact with the keystore

type ORM added in v0.10.3 

type ORM interface {
	MostRecentFluxMonitorRoundID(aggregator common.Address) (uint32, error)
	DeleteFluxMonitorRoundsBackThrough(aggregator common.Address, roundID uint32) error
	FindOrCreateFluxMonitorRoundStats(aggregator common.Address, roundID uint32) (FluxMonitorRoundStatsV2, error)
	UpdateFluxMonitorRoundStats(aggregator common.Address, roundID uint32, runID int64) error
	CreateEthTransaction(fromAddress, toAddress common.Address, payload []byte, gasLimit uint64, maxUnconfirmedTransactions uint64) error
}

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

type PaymentChecker added in v0.10.3 

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 added in v0.10.3 

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

NewPaymentChecker constructs a new payment checker

func (*PaymentChecker) SufficientFunds added in v0.10.3 

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 added in v0.10.3 

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 PipelineRun added in v0.10.3 

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

PipelineRun wraps a the pipeline to execute a single pipeline run

func NewPipelineRun added in v0.10.3 

func NewPipelineRun(
	runner pipeline.Runner,
	spec pipeline.Spec,
	logger logger.Logger,
) PipelineRun

NewPipelineRun constructs a new PipelineRun

func (*PipelineRun) Execute added in v0.10.3 

func (run *PipelineRun) Execute(meta map[string]interface{}) (int64, *decimal.Decimal, error)

Execute executes a pipeline run, extracts the singular result and converts it to a decimal.

type PollManager added in v0.10.4 

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 added in v0.10.4 

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

NewPollManager initializes a new PollManager

func (*PollManager) Awaken added in v0.10.4 

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) Hibernate added in v0.10.4 

func (pm *PollManager) Hibernate()

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

func (*PollManager) HibernationTimerTicks added in v0.10.4 

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

HibernationTimerTicks ticks after a given period

func (*PollManager) IdleTimerTicks added in v0.10.4 

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

IdleTimerTicks ticks after a given period

func (*PollManager) Poll added in v0.10.5 

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 added in v0.10.4 

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

PollTickerTicks ticks on a given interval

func (*PollManager) Reset added in v0.10.4 

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 added in v0.10.4 

func (pm *PollManager) ResetIdleTimer(roundStartedAtUTC uint64)

Reset resets the idle timer unless hibernating

func (*PollManager) RetryTickerTicks added in v0.10.5 

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

RetryTickerTicks ticks with a backoff when the retry ticker is activated

func (*PollManager) RoundTimerTicks added in v0.10.4 

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

RoundTimerTicks ticks after a given period

func (*PollManager) ShouldPerformInitialPoll added in v0.10.4 

func (pm *PollManager) ShouldPerformInitialPoll() bool

ShouldPerformInitialPoll determines whether to perform an initial poll

func (*PollManager) Start added in v0.10.4 

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 added in v0.10.5 

func (pm *PollManager) StartRetryTicker()

StartRetryTicker starts the retry ticker

func (*PollManager) Stop added in v0.10.4 

func (pm *PollManager) Stop()

Stop stops all timers/tickers

func (*PollManager) StopRetryTicker added in v0.10.5 

func (pm *PollManager) StopRetryTicker()

StopRetryTicker stops the retry ticker

type PollManagerConfig added in v0.10.4 

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

type PollRequest added in v0.10.5 

type PollRequest struct {
	Type      PollRequestType
	Timestamp time.Time
}

PollRequest defines a request to initiate a poll

type PollRequestType added in v0.10.5 

type PollRequestType int

PollRequestType defines which method was used to request a poll 

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

type SubmissionChecker added in v0.10.3 

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

SubmissionChecker checks whether an answer is inside the allowable range.

func NewSubmissionChecker added in v0.10.3 

func NewSubmissionChecker(min *big.Int, max *big.Int, precision int32) *SubmissionChecker

NewSubmissionChecker initializes a new SubmissionChecker

func (*SubmissionChecker) IsValid added in v0.10.3 

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

IsValid checks if the submission is between the min and max

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