order

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v0.1.2 Latest Latest Go to latest Published: Nov 12, 2026 License: Apache-2.0 Imports: 1 Imported by: 0

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Repository

github.com/eitanity/merilo

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Documentation ¶

Overview ¶

Package order is a payment-order state machine: submit a charge to a provider, resend on timeout up to MaxRetries, and finish as Paid, Failed or Cancelled.

Constants ¶

View Source

const MaxRetries = 3

MaxRetries is the protocol's resend budget before giving up.

Variables ¶

This section is empty.

Functions ¶

This section is empty.

Types ¶

type Actions ¶

type Actions uint64

Actions is the set of things the holder must do after a transition, one bit each. The holder performs them in declaration order. The zero value is the empty set.

const (
	ActSend Actions = 1 << iota
	ActResend
	ActStartTimer
	ActCancelTimer
	ActModeChanged
)

Actions values.

type Event ¶

type Event uint8

Event is an input to Fire.

const (
	EvSubmit Event
	EvAck
	EvTimeout
	EvCancel
)

Event values.

func (Event) String ¶

func (e Event) String() string

type Machine ¶

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

Machine is one order. Build it with New and change it only with Fire.

func New ¶

func New() Machine

New returns an order in Idle.

func (Machine) Fire ¶

func (m Machine) Fire(e Event) (Machine, Actions, fsm.Outcome)

Fire applies e and returns the next machine, the actions to perform and what happened.

func (Machine) Mode ¶

func (m Machine) Mode() Mode

Mode derives the mode from the state.

func (Machine) Retries ¶

func (m Machine) Retries() int64

Retries returns how many resends have been made.

func (Machine) State ¶

func (m Machine) State() State

State returns the control state.

type Mode ¶

type Mode uint8

Mode is derived from State.

const (
	Normal Mode
	Closed
)

Mode values.

func (Mode) String ¶

func (m Mode) String() string

type State ¶

type State uint8

State is an order's control state.

const (
	Idle State
	Pending
	Paid
	Failed
	Cancelled
)

State values.

func (State) String ¶

func (s State) String() string

Source Files ¶

View all Source files

order.go

Directories ¶

Path	Synopsis
cmd
orderd command Command orderd drives one order from commands on standard input ("submit", "ack", "cancel"), with a real timer for timeouts.	Command orderd drives one order from commands on standard input ("submit", "ack", "cancel"), with a real timer for timeouts.

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