package main

import (
	"sync"
	"sync/atomic"
)

type statsTicker struct {
	Errors   uint64
	InBytes  uint64
	OutBytes uint64

	ErrorCodes map[string]uint64 `json:",omitempty"`
	lock       sync.Mutex
}

// Tick increments each of the given counters by 1 using
// atomic.AddUint64.
func (s *statsTicker) Tick(counters ...*uint64) {
	for _, counter := range counters {
		atomic.AddUint64(counter, 1)
	}
}

func (s *statsTicker) TickErr(err error, errType string) {
	if err == nil {
		return
	}
	s.Tick(&s.Errors)

	s.lock.Lock()
	if s.ErrorCodes == nil {
		s.ErrorCodes = make(map[string]uint64)
	}
	s.ErrorCodes[errType]++
	s.lock.Unlock()
}

func (s *statsTicker) TickInBytes(n uint64) {
	atomic.AddUint64(&s.InBytes, n)
}

func (s *statsTicker) TickOutBytes(n uint64) {
	atomic.AddUint64(&s.OutBytes, n)
}