func decodeRulePostRequest()

in prometheus/handlers/handlers.go [254:274]

• 19 lines of code
• 4 McCabe index (conditional complexity)

func decodeRulePostRequest(c echo.Context) (rulefmt.Rule, error) {
	body, err := ioutil.ReadAll(c.Request().Body)
	if err != nil {
		glog.Errorf("Error reading rule payload: %v", err)
		return rulefmt.Rule{}, fmt.Errorf("error reading request body: %v", err)
	}
	// First try unmarshaling into prometheus rulefmt.Rule{}
	payload := rulefmt.Rule{}
	err = json.Unmarshal(body, &payload)
	if err == nil {
		return payload, nil
	}
	// Try to unmarshal into the RuleJSONWrapper struct if prometheus struct doesn't work
	jsonPayload := alert.RuleJSONWrapper{}
	err = json.Unmarshal(body, &jsonPayload)
	if err != nil {
		glog.Errorf("Error unmarshaling rule payload: %v", err)
		return payload, fmt.Errorf("error unmarshalling payload: %v", err)
	}
	return jsonPayload.ToRuleFmt()
}