accounting

Documentation

Index

• Variables
• type Accounting
  • func NewAccounting(PaymentThreshold uint64, PaymentTolerance uint64, EarlyPayment uint64, ...) (*Accounting, error)
  • func (a *Accounting) Balance(peer swarm.Address) (balance int64, err error)
  • func (a *Accounting) Balances() (map[string]int64, error)
  • func (a *Accounting) Credit(peer swarm.Address, price uint64) error
  • func (a *Accounting) Debit(peer swarm.Address, price uint64) error
  • func (a *Accounting) Metrics() []prometheus.Collector
  • func (a *Accounting) NotifyPayment(peer swarm.Address, amount uint64) error
  • func (a *Accounting) NotifyPaymentThreshold(peer swarm.Address, paymentThreshold uint64) error
  • func (a *Accounting) Release(peer swarm.Address, price uint64)
  • func (a *Accounting) Reserve(ctx context.Context, peer swarm.Address, price uint64) error
• type FixedPricer
  • func NewFixedPricer(overlay swarm.Address, poPrice uint64) *FixedPricer
  • func (pricer *FixedPricer) PeerPrice(peer, chunk swarm.Address) uint64
  • func (pricer *FixedPricer) Price(chunk swarm.Address) uint64
• type Interface
• type Pricer

Variables

var (
	// ErrOverdraft denotes the expected debt in Reserve would exceed the payment thresholds.
	ErrOverdraft = errors.New("attempted overdraft")
	// ErrDisconnectThresholdExceeded denotes a peer has exceeded the disconnect threshold.
	ErrDisconnectThresholdExceeded = errors.New("disconnect threshold exceeded")
	// ErrInvalidPaymentTolerance denotes the payment tolerance is too high
	// compared to the payment threshold.
	ErrInvalidPaymentTolerance = errors.New("payment tolerance must be less than half the payment threshold")
	// ErrPeerNoBalance is the error returned if no balance in store exists for a peer
	ErrPeerNoBalance = errors.New("no balance for peer")
	// ErrOverflow denotes an arithmetic operation overflowed.
	ErrOverflow = errors.New("overflow error")
)

Types

type Accounting

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

Accounting is the main implementation of the accounting interface.

func NewAccounting

func NewAccounting(
	PaymentThreshold uint64,
	PaymentTolerance uint64,
	EarlyPayment uint64,
	Logger logging.Logger,
	Store storage.StateStorer,
	Settlement settlement.Interface,
	Pricing pricing.Interface,
) (*Accounting, error)

NewAccounting creates a new Accounting instance with the provided options.

func (*Accounting) Balance

func (a *Accounting) Balance(peer swarm.Address) (balance int64, err error)

Balance returns the current balance for the given peer.

func (*Accounting) Balances

func (a *Accounting) Balances() (map[string]int64, error)

Balances gets balances for all peers from store.

func (*Accounting) Credit

func (a *Accounting) Credit(peer swarm.Address, price uint64) error

Credit increases the amount of credit we have with the given peer (and decreases existing debt).

func (*Accounting) Debit

func (a *Accounting) Debit(peer swarm.Address, price uint64) error

Debit increases the amount of debt we have with the given peer (and decreases existing credit).

func (*Accounting) Metrics

func (a *Accounting) Metrics() []prometheus.Collector

Metrics returns the prometheus Collector for the accounting service.

func (*Accounting) NotifyPayment

func (a *Accounting) NotifyPayment(peer swarm.Address, amount uint64) error

NotifyPayment implements the PaymentObserver interface. It is called by Settlement when we receive a payment.

func (*Accounting) NotifyPaymentThreshold

func (a *Accounting) NotifyPaymentThreshold(peer swarm.Address, paymentThreshold uint64) error

NotifyPaymentThreshold should be called to notify accounting of changes in the payment threshold

func (*Accounting) Release

func (a *Accounting) Release(peer swarm.Address, price uint64)

Release releases reserved funds.

func (*Accounting) Reserve

func (a *Accounting) Reserve(ctx context.Context, peer swarm.Address, price uint64) error

Reserve reserves a portion of the balance for peer and attempts settlements if necessary.

type FixedPricer

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

FixedPricer is a Pricer that has a fixed price for chunks.

func NewFixedPricer

func NewFixedPricer(overlay swarm.Address, poPrice uint64) *FixedPricer

NewFixedPricer returns a new FixedPricer with a given price.

func (*FixedPricer) PeerPrice

func (pricer *FixedPricer) PeerPrice(peer, chunk swarm.Address) uint64

PeerPrice implements Pricer.

func (*FixedPricer) Price

func (pricer *FixedPricer) Price(chunk swarm.Address) uint64

Price implements Pricer.

type Interface

type Interface interface {
	// Reserve reserves a portion of the balance for peer and attempts settlements if necessary.
	// Returns an error if the operation risks exceeding the disconnect threshold or an attempted settlement failed.
	//
	// This has to be called (always in combination with Release) before a
	// Credit action to prevent overspending in case of concurrent requests.
	Reserve(ctx context.Context, peer swarm.Address, price uint64) error
	// Release releases the reserved funds.
	Release(peer swarm.Address, price uint64)
	// Credit increases the balance the peer has with us (we "pay" the peer).
	Credit(peer swarm.Address, price uint64) error
	// Debit increases the balance we have with the peer (we get "paid" back).
	Debit(peer swarm.Address, price uint64) error
	// Balance returns the current balance for the given peer.
	Balance(peer swarm.Address) (int64, error)
	// Balances returns balances for all known peers.
	Balances() (map[string]int64, error)
}

Interface is the Accounting interface.

type Pricer

type Pricer interface {
	// PeerPrice is the price the peer charges for a given chunk hash.
	PeerPrice(peer, chunk swarm.Address) uint64
	// Price is the price we charge for a given chunk hash.
	Price(chunk swarm.Address) uint64
}

Pricer returns pricing information for chunk hashes.