func GetConfigureAlertHandler()

in prometheus/handlers/handlers.go [111:141]

27 lines of code
6 McCabe index (conditional complexity)


func GetConfigureAlertHandler(client alert.PrometheusAlertClient) func(c echo.Context) error {
	return func(c echo.Context) error {
		defer glog.Flush()
		rule, err := decodeRulePostRequest(c)
		if err != nil {
			return echo.NewHTTPError(http.StatusBadRequest, err.Error())
		}
		tenantID := c.Get(tenantIDParam).(string)
		glog.Infof("Configure Alert: Tenant: %s, %+v", tenantID, rule)

		err = alert.ValidateRule(rule)
		if err != nil {
			return echo.NewHTTPError(http.StatusBadRequest, err.Error())
		}

		if client.RuleExists(tenantID, rule.Alert) {
			return echo.NewHTTPError(http.StatusBadRequest, fmt.Sprintf("Rule '%s' already exists", rule.Alert))
		}

		err = client.WriteRule(tenantID, rule)
		if err != nil {
			return echo.NewHTTPError(http.StatusInternalServerError, err.Error())
		}

		err = client.ReloadPrometheus()
		if err != nil {
			return echo.NewHTTPError(http.StatusInternalServerError, err.Error())
		}
		return c.NoContent(http.StatusOK)
	}
}