pool

package
v0.0.0-...-31a5603 Latest Latest
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Published: Dec 5, 2021 License: ISC Imports: 33 Imported by: 0

Documentation

Index

Constants

View Source
const (
	// MaxReorgLimit is an estimated maximum chain reorganization limit.
	// That is, it is highly improbable for the the chain to reorg beyond six
	// blocks from the chain tip.
	MaxReorgLimit = 6

	CPU           = "cpu"
	InnosiliconD9 = "innosilicond9"
	AntminerDR3   = "antminerdr3"
	AntminerDR5   = "antminerdr5"
	WhatsminerD1  = "whatsminerd1"
)
View Source
const (

	// apiClient represents an api client.
	APIClient = "api"

	// poolClient represents a pool client.
	PoolClient = "pool"
)
View Source
const (
	RequestType      = "request"
	ResponseType     = "response"
	NotificationType = "notification"
)

Message types.

View Source
const (
	Authorize     = "mining.authorize"
	Subscribe     = "mining.subscribe"
	SetDifficulty = "mining.set_difficulty"
	Notify        = "mining.notify"
	Submit        = "mining.submit"
)

Handler types.

View Source
const (
	Unknown            = 20
	StaleJob           = 21
	DuplicateShare     = 22
	LowDifficultyShare = 23
	UnauthorizedWorker = 24
	NotSubscribed      = 25
)

Error codes.

View Source
const (

	// DBVersion is the latest version of the database that is understood by the
	// program. Databases with recorded versions higher than this will fail to
	// open (meaning any upgrades prevent reverting to older software).
	DBVersion = transactionIDVersion
)
View Source
const (
	ExtraNonce2Size = 4
)

Stratum constants.

View Source
const (
	// MaxMessageSize represents the maximum size of a transmitted message
	// allowed, in bytes.
	MaxMessageSize = 250
)

Variables

View Source
var (
	// ZeroInt is the default value for a big.Int.
	ZeroInt = new(big.Int).SetInt64(0)

	// ZeroRat is the default value for a big.Rat.
	ZeroRat = new(big.Rat).SetInt64(0)
)
View Source
var (
	// PPS represents the pay per share payment method.
	PPS = "pps"

	// PPLNS represents the pay per last n shares payment method.
	PPLNS = "pplns"
)
View Source
var ShareWeights = map[string]*big.Rat{
	CPU: new(big.Rat).SetFloat64(1.0),

	InnosiliconD9: new(big.Rat).SetFloat64(2.182),
	AntminerDR3:   new(big.Rat).SetFloat64(7.091),
	AntminerDR5:   new(big.Rat).SetFloat64(31.181),
	WhatsminerD1:  new(big.Rat).SetFloat64(43.636),
}

ShareWeights reprsents the associated weights for each known DCR miner. With the share weight of the lowest hash DCR miner (LHM) being 1, the rest were calculated as :

(Hash of Miner X * Weight of LHM)/ Hash of LHM

Functions

func AcceptedWorkID

func AcceptedWorkID(blockHash string, blockHeight uint32) []byte

AcceptedWorkID generates a unique id for the work accepted by the network.

func AccountID

func AccountID(address string) (string, error)

AccountID generates an id using provided address of the account.

func DifficultyToTarget

func DifficultyToTarget(net *chaincfg.Params, difficulty *big.Int) (*big.Int, error)

DifficultyToTarget converts the provided difficulty to a target based on the active network.

func DisableLog

func DisableLog()

DisableLog disables all library log output. Logging output is disabled by default until UseLogger is called.

func GenerateBlockHeader

func GenerateBlockHeader(blockVersionE string, prevBlockE string,
	genTx1E string, extraNonce1E string, genTx2E string) (*wire.BlockHeader, error)

GenerateBlockHeader creates a block header from a mining.notify message and the extraNonce1 of the client.

func GenerateJobID

func GenerateJobID(height uint32) (string, error)

GenerateJobID generates a unique job id of the provided block height.

func GeneratePaymentID

func GeneratePaymentID(createdOnNano int64, height uint32, account string) []byte

GeneratePaymentID generates a unique id using the provided account and the created on nano time.

func GenerateSolvedBlockHeader

func GenerateSolvedBlockHeader(headerE string, extraNonce1E string,
	extraNonce2E string, nTimeE string, nonceE string, miner string) (*wire.BlockHeader, error)

GenerateSolvedBlockHeader create a block header from a mining.submit message and its associated job.

func IsError

func IsError(err error, code ErrorCode) bool

IsError returns whether err is an Error with a matching error code.

func PPLNSSharePercentages

func PPLNSSharePercentages(db *bolt.DB, poolFee float64, height uint32, periodSecs uint32) (map[string]*big.Rat, error)

PPLNSSharePercentages computes the current mining reward percentages due pool accounts based on work performed measured by the PPLNS payment scheme.

func PPSSharePercentages

func PPSSharePercentages(db *bolt.DB, poolFee float64, height uint32) (map[string]*big.Rat, error)

PPLNSSharePercentages computes the current mining reward percentages due pool accounts based on work performed measured by the PPS payment scheme.

func ParseAuthorizeRequest

func ParseAuthorizeRequest(req *Request) (string, error)

ParseAuthorizeRequest resolves an authorize request into its components.

func ParseSetDifficultyNotification

func ParseSetDifficultyNotification(req *Request) (uint64, error)

ParseSetDifficultyNotification resolves a set difficulty notification into its components.

func ParseSubmitWorkRequest

func ParseSubmitWorkRequest(req *Request, miner string) (string, string, string, string, string, error)

ParseSubmitWorkRequest resolves a submit work request into its components.

func ParseSubscribeRequest

func ParseSubscribeRequest(req *Request) (string, string, error)

ParseSubscribeRequest resolves a subscribe request into its components.

func ParseSubscribeResponse

func ParseSubscribeResponse(resp *Response) (string, string, string, uint64, error)

ParseSubscribeResponse resolves a subscribe response into its components.

func ParseWorkNotification

func ParseWorkNotification(req *Request) (string, string, string, string, string, string, string, bool, error)

ParseWorkNotification resolves a work notification message into its components.

func PayPerLastNShares

func PayPerLastNShares(db *bolt.DB, amount hcutil.Amount, poolFee float64, height uint32, coinbaseMaturity uint16, periodSecs uint32) error

PayPerLastNShares generates a payment bundle comprised of payments to all participating accounts within the last n time period provided.

func PayPerShare

func PayPerShare(db *bolt.DB, total hcutil.Amount, poolFee float64, height uint32, coinbaseMaturity uint16) error

PayPerShare generates a payment bundle comprised of payments to all participating accounts. Payments are calculated based on work contributed to the pool since the last payment batch.

func PruneAcceptedWork

func PruneAcceptedWork(db *bolt.DB, height uint32) error

PruneAcceptedWork removes all accepted work not confirmed as mined work with heights less than the provided height.

func PruneJobs

func PruneJobs(db *bolt.DB, height uint32) error

PruneJobs removes all jobs with heights less than the provided height.

func PruneShares

func PruneShares(db *bolt.DB, minNano int64) error

PruneShares removes invalidated shares from the db.

func UseLogger

func UseLogger(logger slog.Logger)

UseLogger uses a specified Logger to output package logging info.

Types

type AcceptedWork

type AcceptedWork struct {
	UUID      string `json:"uuid"`
	BlockHash string `json:"blockhash"`
	PrevHash  string `json:"prevhash"`
	Height    uint32 `json:"height"`
	MinedBy   string `json:"minedby"`
	Miner     string `json:"miner"`
	CreatedOn int64  `json:"createdon"`

	// An accepted work becomes mined work once it is confirmed by an incoming
	// work as the parent block it was built on.
	Confirmed bool `json:"confirmed"`
}

AcceptedWork represents an accepted work submission to the network.

func FetchAcceptedWork

func FetchAcceptedWork(db *bolt.DB, id []byte) (*AcceptedWork, error)

FetchAcceptedWork fetches the accepted work referenced by the provided id.

func ListMinedWork

func ListMinedWork(db *bolt.DB, n int) ([]*AcceptedWork, error)

ListMinedWork returns the N most recent work data associated with blocks mined by the pool.

List is ordered, most recent comes first.

func NewAcceptedWork

func NewAcceptedWork(blockHash string, prevHash string, height uint32, minedBy string, miner string) *AcceptedWork

NewAcceptedWork creates an accepted work instance.

func (*AcceptedWork) Create

func (work *AcceptedWork) Create(db *bolt.DB) error

Create persists the accepted work to the database.

func (*AcceptedWork) Delete

func (work *AcceptedWork) Delete(db *bolt.DB) error

Delete removes the associated accepted work from the database.

func (*AcceptedWork) Update

func (work *AcceptedWork) Update(db *bolt.DB) error

Update persists modifications to an existing work.

type Account

type Account struct {
	UUID      string `json:"uuid"`
	Address   string `json:"address"`
	CreatedOn uint64 `json:"createdon"`
}

Account represents a mining pool account.

func FetchAccount

func FetchAccount(db *bolt.DB, id []byte) (*Account, error)

FetchAccount fetches the account referenced by the provided id.

func NewAccount

func NewAccount(address string) (*Account, error)

NewAccount generates a new account.

func (*Account) Create

func (acc *Account) Create(db *bolt.DB) error

Create persists the account to the database.

func (*Account) Delete

func (acc *Account) Delete(db *bolt.DB) error

Delete purges the referenced account from the database.

func (*Account) Update

func (acc *Account) Update(db *bolt.DB) error

Update is not supported for accounts.

type Client

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

Client represents a client connection.

func NewClient

func NewClient(conn net.Conn, endpoint *endpoint, addr *net.TCPAddr) (*Client, error)

NewClient creates client connection instance.

type ClientInfo

type ClientInfo struct {
	Miner    string
	IP       string
	HashRate *big.Rat
}

type DifficultyData

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

DifficultyData captures the pool target difficulty and pool difficulty ratio of a mining client.

type Error

type Error struct {
	ErrorCode   ErrorCode
	Description string
	Err         error
}

Error extends the base error type by adding an error description and an error code.

The caller can use type assertions to determine if an error is an Error and access the ErrorCode field to ascertain the specific reason for the failure.

func MakeError

func MakeError(c ErrorCode, desc string, err error) Error

MakeError creates an Error given a set of arguments.

func (Error) Error

func (e Error) Error() string

Error satisfies the error interface and prints human-readable errors.

type ErrorCode

type ErrorCode int

ErrorCode identifies a kind of error.

const (
	// ErrValueNotFound indicates a key does not map to any value.
	ErrValueNotFound ErrorCode = iota

	// ErrValueNotFound indicates a bucket key does not map to a bucket.
	ErrBucketNotFound

	// ErrBucketCreate indicates bucket creation failed.
	ErrBucketCreate

	// ErrDBOpen indicates database open error.
	ErrDBOpen

	// ErrWorkExists indicates an already existing work.
	ErrWorkExists

	// ErrWorkNotFound indicates non-existent work.
	ErrWorkNotFound

	// ErrWrongInputLength indicates an incorrect input size.
	ErrWrongInputLength

	// ErrDifficultyNotFound indicates a non-existent miner pool difficulty.
	ErrDifficultyNotFound

	// ErrCalcPoolTarget indicates a pool target calculation error.
	ErrCalcPoolTarget

	// ErrParse indicates a message parsing error.
	ErrParse

	// ErrDecode indicates a decode error.
	ErrDecode

	// ErrNotSupported indicates not supported functionality.
	ErrNotSupported

	// ErrDivideByZero indicates a division by zero error.
	ErrDivideByZero

	// ErrDBUpgrade indicates a database upgrade error.
	ErrDBUpgrade

	// ErrOther indicates a miscellenious error.
	ErrOther
)

These constants are used to identify a specific error.

func (ErrorCode) String

func (e ErrorCode) String() string

String returns the ErrorCode as a human-readable name.

type Hub

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

Hub maintains the set of active clients and facilitates message broadcasting to all active clients.

func NewHub

func NewHub(ctx context.Context, cancel context.CancelFunc, httpc *http.Client, hcfg *HubConfig, limiter *RateLimiter) (*Hub, error)

NewHub initializes a websocket hub.

func (*Hub) AccountExists

func (h *Hub) AccountExists(accountID string) bool

AccountExists asserts if the provided account id references a pool account.

func (*Hub) BackupDB

func (h *Hub) BackupDB(w http.ResponseWriter) error

BackupDB streams a backup of the database over an http response.

func (*Hub) CSRFSecret

func (h *Hub) CSRFSecret(getCSRF func() ([]byte, error)) ([]byte, error)

CSRFSecret fetches a persisted secret or generates a new one.

func (*Hub) FetchAccountClientInfo

func (h *Hub) FetchAccountClientInfo(accountID string) []*ClientInfo

FetchAccountClientInfo returns all clients belonging to the provided account id.

func (*Hub) FetchClientInfo

func (h *Hub) FetchClientInfo() map[string][]*ClientInfo

FetchClientInfo returns connection details about all pool clients.

func (*Hub) FetchLastPaymentHeight

func (h *Hub) FetchLastPaymentHeight() uint32

FetchLastPaymentHeight returns the last height payments were made at.

func (*Hub) FetchLastWorkHeight

func (h *Hub) FetchLastWorkHeight() uint32

FetchLastWorkHeight returns the last height work was generated for.

func (*Hub) FetchMinedWork

func (h *Hub) FetchMinedWork() ([]*AcceptedWork, error)

FetchMinedWork returns the last ten mined blocks by the pool.

func (*Hub) FetchMinedWorkByAddress

func (h *Hub) FetchMinedWorkByAddress(id string) ([]*AcceptedWork, error)

FetchMinedWorkByAddress returns a list of mined work by the provided address. List is ordered, most recent comes first.

func (*Hub) FetchPaymentsForAddress

func (h *Hub) FetchPaymentsForAddress(id string) ([]*Payment, error)

FetchPaymentsForAddress returns a list or payments made to the provided address. List is ordered, most recent comes first.

func (*Hub) FetchPoolHashRate

func (h *Hub) FetchPoolHashRate() (*big.Rat, map[string][]*ClientInfo)

FetchPoolHashRate returns the hash rate of the pool.

func (*Hub) FetchWorkQuotas

func (h *Hub) FetchWorkQuotas() ([]*Quota, error)

FetchWorkQuotas returns the reward distribution to pool accounts based on work contributed per the peyment scheme used by the pool.

func (*Hub) GetWork

func (h *Hub) GetWork() (string, string, error)

GetWork fetches available work from the consensus daemon.

func (*Hub) HasClients

func (h *Hub) HasClients() bool

HasClients asserts the mining pool has clients.

func (*Hub) PublishTransaction

func (h *Hub) PublishTransaction(payouts map[hcutil.Address]hcutil.Amount, targetAmt hcutil.Amount) (string, error)

PublishTransaction creates a transaction paying pool accounts for work done.

func (*Hub) Run

func (h *Hub) Run(ctx context.Context)

run handles the process lifecycles of the pool hub.

func (*Hub) SubmitWork

func (h *Hub) SubmitWork(data *string) (bool, error)

SubmitWork sends solved block data to the consensus daemon for evaluation.

type HubConfig

type HubConfig struct {
	ActiveNet             *chaincfg.Params
	DcrdRPCCfg            *rpcclient.ConnConfig
	PoolFee               float64
	MaxTxFeeReserve       hcutil.Amount
	MaxGenTime            uint64
	WalletRPCCertFile     string
	WalletGRPCHost        string
	PaymentMethod         string
	LastNPeriod           uint32
	WalletPass            string
	MinPayment            hcutil.Amount
	DBFile                string
	SoloPool              bool
	PoolFeeAddrs          []hcutil.Address
	BackupPass            string
	Secret                string
	NonceIterations       float64
	MinerPorts            map[string]uint32
	MaxConnectionsPerHost uint32
}

HubConfig represents configuration details for the hub.

type Job

type Job struct {
	UUID   string `json:"uuid"`
	Height uint32 `json:"height"`
	Header string `json:"header"`
}

Job represents cached copies of work delivered to clients.

func FetchJob

func FetchJob(db *bolt.DB, id []byte) (*Job, error)

FetchJob fetches the job referenced by the provided id.

func NewJob

func NewJob(header string, height uint32) (*Job, error)

NewJob creates a job instance.

func (*Job) Create

func (job *Job) Create(db *bolt.DB) error

Create persists the job to the database.

func (*Job) Delete

func (job *Job) Delete(db *bolt.DB) error

Delete removes the associated job from the database.

func (*Job) Update

func (job *Job) Update(db *bolt.DB) error

Update persists the updated accepted work to the database.

type Message

type Message interface {
	MessageType() string
}

Message defines a message interface.

func IdentifyMessage

func IdentifyMessage(data []byte) (Message, string, error)

IdentifyMessage determines the received message type. It returns the message cast to the appropriate message type, the message type and an error type.

type Payment

type Payment struct {
	Account           string        `json:"account"`
	EstimatedMaturity uint32        `json:"estimatedmaturity"`
	Height            uint32        `json:"height"`
	Amount            hcutil.Amount `json:"amount"`
	CreatedOn         int64         `json:"createdon"`
	PaidOnHeight      uint32        `json:"paidonheight"`
	TransactionID     string        `json:"transactionid"`
}

Payment represents an outstanding payment for a pool account.

func CalculatePayments

func CalculatePayments(percentages map[string]*big.Rat, total hcutil.Amount,
	poolFee float64, height uint32, estMaturity uint32) ([]*Payment, error)

CalculatePayments calculates the payments due participating accounts.

func FetchMaturePendingPayments

func FetchMaturePendingPayments(db *bolt.DB, height uint32) ([]*Payment, error)

FetchMaturePendingPayments fetches all payments past their estimated maturities which have not been paid yet.

func FetchPendingPayments

func FetchPendingPayments(db *bolt.DB) ([]*Payment, error)

FetchPendingPayments fetches all unpaid payments.

func FetchPendingPaymentsAtHeight

func FetchPendingPaymentsAtHeight(db *bolt.DB, height uint32) ([]*Payment, error)

FetchPendingPaymentsAtHeight fetches all pending payments at the provided height.

func GetPayment

func GetPayment(db *bolt.DB, id []byte) (*Payment, error)

GetPayment fetches the payment referenced by the provided id.

func NewPayment

func NewPayment(account string, amount hcutil.Amount, height uint32, estMaturity uint32) *Payment

NewPayment creates a payment instance.

func (*Payment) Create

func (pmt *Payment) Create(db *bolt.DB) error

Create persists a payment to the database.

func (*Payment) Delete

func (pmt *Payment) Delete(db *bolt.DB) error

Delete purges the referenced pending payment from the database.

func (*Payment) Update

func (pmt *Payment) Update(db *bolt.DB) error

Update persists the updated payment to the database.

type PaymentBundle

type PaymentBundle struct {
	Account  string
	Payments []*Payment
}

PaymentBundle is a convenience type for grouping payments for an account.

func FetchEligiblePaymentBundles

func FetchEligiblePaymentBundles(db *bolt.DB, height uint32, minPayment hcutil.Amount) ([]*PaymentBundle, error)

FetchEligiblePaymentBundles fetches payment bundles greater than the configured minimum payment.

func (*PaymentBundle) ArchivePayments

func (bundle *PaymentBundle) ArchivePayments(db *bolt.DB) error

ArchivePayments removes all payments included in the payment bundle from the payment bucket and archives them.

func (*PaymentBundle) Total

func (bundle *PaymentBundle) Total() hcutil.Amount

Total returns the sum of all payments amount for the account.

func (*PaymentBundle) UpdateAsPaid

func (bundle *PaymentBundle) UpdateAsPaid(db *bolt.DB, height uint32, txid string)

UpdateAsPaid updates all associated payments referenced by a payment bundle as paid.

type Quota

type Quota struct {
	AccountID  string
	Percentage *big.Rat
}

Quota details the portion of mining rewrds due an account for work contributed to the pool.

type RateLimiter

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

RateLimiter keeps connected clients within their allocated request rates.

func NewRateLimiter

func NewRateLimiter() *RateLimiter

NewRateLimiter initializes a rate limiter.

func (*RateLimiter) AddRequestLimiter

func (r *RateLimiter) AddRequestLimiter(ip string, clientType string) *rate.Limiter

AddRequestLimiter adds a new client request limiter to the limiter set.

func (*RateLimiter) GetLimiter

func (r *RateLimiter) GetLimiter(ip string) *rate.Limiter

GetLimiter fetches the request limiter referenced by the provided IP address.

func (*RateLimiter) RemoveLimiter

func (r *RateLimiter) RemoveLimiter(ip string)

RemoveLimiter deletes the request limiter associated with the provided ip.

func (*RateLimiter) WithinLimit

func (r *RateLimiter) WithinLimit(ip string, clientType string) bool

WithinLimit asserts that the client referenced by the provided IP address is within the limits of the rate limiter, therefore can make further requests. If no request limiter is found for the provided IP address a new one is created.

type Request

type Request struct {
	ID     *uint64     `json:"id"`
	Method string      `json:"method"`
	Params interface{} `json:"params"`
}

Request defines a request message.

func AuthorizeRequest

func AuthorizeRequest(id *uint64, name string, address string) *Request

AuthorizeRequest creates an authorize request message.

func NewRequest

func NewRequest(id *uint64, method string, params interface{}) *Request

NewRequest creates a request instance.

func SetDifficultyNotification

func SetDifficultyNotification(difficulty *big.Int) *Request

SetDifficultyNotification creates a set difficulty notification message.

func SubmitWorkRequest

func SubmitWorkRequest(id *uint64, workerName string, jobID string, extraNonce2 string, nTime string, nonce string) *Request

SubmitWorkRequest creates a submit request message.

func SubscribeRequest

func SubscribeRequest(id *uint64, userAgent string, version string, notifyID string) *Request

SubscribeRequest creates a subscribe request message.

func WorkNotification

func WorkNotification(jobID string, prevBlock string, genTx1 string, genTx2 string, blockVersion string, nBits string, nTime string, cleanJob bool) *Request

WorkNotification creates a work notification message.

func (*Request) MessageType

func (req *Request) MessageType() string

MessageType returns the request message type.

type Response

type Response struct {
	ID     uint64        `json:"id"`
	Error  *StratumError `json:"error"`
	Result interface{}   `json:"result,omitempty"`
}

Response defines a response message.

func AuthorizeResponse

func AuthorizeResponse(id uint64, status bool, err *StratumError) *Response

AuthorizeResponse creates an authorize response.

func NewResponse

func NewResponse(id uint64, result interface{}, err *StratumError) *Response

NewResponse creates a response instance.

func SubmitWorkResponse

func SubmitWorkResponse(id uint64, status bool, err *StratumError) *Response

SubmitWorkResponse creates a submit response.

func SubscribeResponse

func SubscribeResponse(id uint64, notifyID string, extraNonce1 string, extraNonce2Size int, err *StratumError) *Response

SubscribeResponse creates a mining.subscribe response.

func (*Response) MessageType

func (req *Response) MessageType() string

MessageType returns the response message type.

type Share

type Share struct {
	Account   string   `json:"account"`
	Weight    *big.Rat `json:"weight"`
	CreatedOn int64    `json:"createdOn"`
}

Share represents verifiable work performed by a pool client.

func NewShare

func NewShare(account string, weight *big.Rat) *Share

NewShare creates a share with the provided account and weight.

func PPLNSEligibleShares

func PPLNSEligibleShares(db *bolt.DB, min []byte) ([]*Share, error)

PPLNSEligibleShares fetches all shares keyed greater than the provided minimum.

func PPSEligibleShares

func PPSEligibleShares(db *bolt.DB, min []byte, max []byte) ([]*Share, error)

PPSEligibleShares fetches all shares within the provided inclusive bounds.

func (*Share) Create

func (s *Share) Create(db *bolt.DB) error

Create persists a share to the database.

func (*Share) Delete

func (s *Share) Delete(db *bolt.DB) error

Delete is not supported for shares.

func (*Share) Update

func (s *Share) Update(db *bolt.DB) error

Update is not supported for shares.

type StratumError

type StratumError struct {
	Code      uint32  `json:"code"`
	Message   string  `json:"message"`
	Traceback *string `json:"traceback"`
}

StratumError represents a stratum error message.

func NewStratumError

func NewStratumError(code uint32, traceback *string) *StratumError

NewStratumError creates a stratum error instance.

func ParseAuthorizeResponse

func ParseAuthorizeResponse(resp *Response) (bool, *StratumError, error)

ParseAuthorizeResponse resolves an authorize response into its components.

func ParseSubmitWorkResponse

func ParseSubmitWorkResponse(resp *Response) (bool, *StratumError, error)

ParseSubmitWorkResponse resolves a submit response into its components.

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