func getInstanceMetadata()

in scripts/go/analyzeCUR/analyzeCUR.go [92:120]

• 28 lines of code
• 6 McCabe index (conditional complexity)

func getInstanceMetadata(sess *session.Session) map[string]interface{} {
	c := &http.Client{
		Timeout: 100 * time.Millisecond,
	}
	resp, err := c.Get("http://169.254.169.254/latest/dynamic/instance-identity/document")
	var m map[string]interface{}
	if err == nil {
		defer resp.Body.Close()
		body, err := ioutil.ReadAll(resp.Body)
		if err == nil {
			err = json.Unmarshal(body, &m)
			if err != nil {
				log.Fatalln("Could not parse MetaData, erorr: " + err.Error())
			}
		}
	}
	// if we havent obtained instance meta-data fetch account from STS - likely were not on EC2
	_, ok := m["region"].(string)
	if !ok {
		svc := sts.New(sess)
		result, err := svc.GetCallerIdentity(&sts.GetCallerIdentityInput{})
		if err == nil {
			m = make(map[string]interface{})
			m["accountId"] = *result.Account
			m["region"] = *sess.Config.Region
		}
	}
	return m
}