var (
	// EnableMysqlFilter enables injection of `envoy.filters.network.mysql_proxy` in the filter chain.
	// Pilot injects this outbound filter if the service port name is `mysql`.
	EnableMysqlFilter = env.Register(
		"PILOT_ENABLE_MYSQL_FILTER",
		false,
		"EnableMysqlFilter enables injection of `envoy.filters.network.mysql_proxy` in the filter chain.",
	).Get()

	// ThriftProxy network filter
	ThriftProxy = "envoy.filters.network.thrift_proxy"
	// RedisProxy network filter
	RedisProxy = "envoy.filters.network.redis_proxy"
	// MySQLProxy network filter
	MySQLProxy = "envoy.filters.network.mysql_proxy"
	// ExternalAuthorization network filter
	ExternalAuthorization = "envoy.filters.network.ext_authz"
	// RoleBasedAccessControl network filter

// buildMySQLFilter builds an outbound Envoy MySQLProxy filter.
func buildMySQLFilter(statPrefix string) *listener.Filter {
	mySQLProxy := &mysql.MySQLProxy{
		StatPrefix: statPrefix, // MySQL stats are prefixed with mysql.<statPrefix> by Envoy.
	}

	out := &listener.Filter{
		Name:       wellknown.MySQLProxy,
		ConfigType: &listener.Filter_TypedConfig{TypedConfig: protoconv.MessageToAny(mySQLProxy)},
	}

	return out

	_ "github.com/envoyproxy/go-control-plane/contrib/envoy/extensions/filters/network/kafka_mesh/v3alpha"
	_ "github.com/envoyproxy/go-control-plane/contrib/envoy/extensions/filters/network/mysql_proxy/v3"
	_ "github.com/envoyproxy/go-control-plane/contrib/envoy/extensions/filters/network/postgres_proxy/v3alpha"
	_ "github.com/envoyproxy/go-control-plane/contrib/envoy/extensions/filters/network/rocketmq_proxy/v3"

			} else {
				routes = append(routes, fmt.Sprintf("%d", port))
			}
		case wellknown.MongoProxy:
			// ignore for now
		case wellknown.RedisProxy:
			// ignore for now
		case wellknown.MySQLProxy:
			// ignore for now
		default:
			adscLog.Infof(protomarshal.ToJSONWithIndent(l, "  "))
		}
	}

	adscLog.Infof("LDS: http=%d tcp=%d size=%d", len(lh), len(lt), ldsSize)
	if adscLog.DebugEnabled() {

}

func isMysqlListener(listener *listener.Listener) bool {
	if len(listener.FilterChains) > 0 && len(listener.FilterChains[0].Filters) > 0 {
		return listener.FilterChains[0].Filters[0].Name == wellknown.MySQLProxy
	}
	return false
}

func hasListenerOrFilterChainForPort(listeners []*listener.Listener, port uint32) bool {
	for _, l := range listeners {
		if port == l.Address.GetSocketAddress().GetPortValue() {