lnd/htlcswitch/payment_result.go

package htlcswitch

import "errors"

var (
	// ErrPaymentIDNotFound is an error returned if the given paymentID is
	// not found.
	ErrPaymentIDNotFound = errors.New("paymentID not found")

	// ErrPaymentIDAlreadyExists is returned if we try to write a pending
	// payment whose paymentID already exists.
	ErrPaymentIDAlreadyExists = errors.New("paymentID already exists")
)

// PaymentResult wraps a result received from the network after a payment
// attempt was made.
type PaymentResult struct {
	// Preimage is set by the switch in case a sent HTLC was settled.
	Preimage [32]byte

	// Error is non-nil in case a HTLC send failed, and the HTLC is now
	// irrevocably cancelled. If the payment failed during forwarding, this
	// error will be a *ForwardingError.
	Error error
}