func parseTag()

in mse-go-demo/grpc/b-server/main.go [79:100]

• 21 lines of code
• 5 McCabe index (conditional complexity)

func parseTag() string {
	var re = regexp.MustCompile(`(?m)alicloud\.service\.tag="(?P<tag>.*)"`)
	bs, err := ioutil.ReadFile("/etc/podinfo/labels")
	if err != nil {
		return ""
	}
	content := string(bs)
	result := re.FindStringSubmatch(content)

	groupNames := re.SubexpNames()
	index := 0
	for i, name := range groupNames {
		if name == "tag" {
			index = i
			break
		}
	}
	if len(result) <= index {
		return ""
	}
	return result[index]
}