func ParseGb()

in pkg/api/deploymentapi/deploymentsize/sizes.go [31:64]

• 26 lines of code
• 7 McCabe index (conditional complexity)

func ParseGb(strSize string) (int32, error) {
	strSize = strings.ToLower(strSize)
	if strSize == "0" {
		return 0, nil
	}

	re := regexp.MustCompile(`(?m)(.*\w)(g)`)
	matches := re.FindStringSubmatch(strSize)
	if len(matches) < 2 {
		return 0, fmt.Errorf(`failed to convert "%s" to <size><g>`, strSize)
	}

	// Pops the first item out when the first match (all groups) are contained
	// within the full string.
	if strings.Contains(strSize, matches[0]) {
		matches = matches[1:]
	}

	rawSize, err := strconv.ParseFloat(matches[0], 32)
	if err != nil {
		return 0, err
	}

	var size = int32(rawSize * 1024)
	if size < minsize {
		return 0, fmt.Errorf(`size "%s" is invalid: minimum size is %.1fg`, strSize, float32(minsize)/1024)
	}

	if size%512 > 0 {
		return 0, fmt.Errorf(`size "%s" is invalid: only increments of 0.5g are permitted`, strSize)
	}

	return size, nil
}