eventloop

type Runner[T Task] struct {
	// contains filtered or unexported fields
}

type Task interface {
	// Init is called before entering the loop calling Poll.
	Init(ctx context.Context) error

	// Poll should be called periodically until an error is returned.
	Poll(ctx context.Context) error

	// NotifyExit does necessary bookkeeping job for exiting,
	// such as notifying a master.
	// errIn describes the reason for exiting.
	NotifyExit(ctx context.Context, errIn error) error

	// Close does necessary clean up.
	// TODO `ctx` is for compatibility, remove it.
	Close(ctx context.Context) error

	// Stop is called when a task is canceled
	Stop(ctx context.Context) error

	// ID returns an identifier for the Task.
	ID() string
}