"@type": "type.googleapis.com/envoy.config.listener.v3.Listener",
      "address": {
       "socket_address": {
        "address": "0.0.0.0",
        "port_value": 15090
       }
      },
      "filter_chains": [
       {
        "filters": [
         {
          "name": "envoy.filters.network.http_connection_manager",
          "typed_config": {

              "address": {
                "socket_address": {
                  "address": "0.0.0.0",
                  "port_value": 15008
                }
              },
              "filter_chains": [
                {
                  "filters": [
                    {
                      "name": "envoy.filters.network.http_connection_manager",
                      "typed_config": {

              "address": {
                "socket_address": {
                  "address": "0.0.0.0",
                  "port_value": 15008
                }
              },
              "filter_chains": [
                {
                  "filters": [
                    {
                      "name": "envoy.filters.network.http_connection_manager",
                      "typed_config": {

            "address": {
              "socket_address": {
                "address": "0.0.0.0",
                "port_value": 15021
              }
            },
            "filter_chains": [
              {
                "filters": [
                  {
                    "name": "envoy.filters.network.http_connection_manager",
                    "typed_config": {

			},
			inListener: &listener.Listener{
				FilterChains: []*listener.FilterChain{{
					Filters: []*listener.Filter{{
						Name: wellknown.TCPProxy,
					}},
				}},
			},
			expect: true,
		},
		{
			desc: "unknown-type",
			inFilter: &ListenerFilter{
				Type: "UNKNOWN",
			},
			inListener: &listener.Listener{
				FilterChains: []*listener.FilterChain{{
					Filters: []*listener.Filter{},
				}},

var re = regexp.MustCompile(`ns\[(.+)\]-policy\[(.+)\]-rule\[(.+)\]`)

type filterChain struct {
	rbacHTTP []*rbachttp.RBAC
	rbacTCP  []*rbactcp.RBAC
}

type parsedListener struct {
	filterChains []*filterChain
}

func getFilterConfig(filter *listener.Filter, out proto.Message) error {
	switch c := filter.ConfigType.(type) {

	}
)

func retrieveListenerMatches(l *listener.Listener) []filterchain {
	fChains := getFilterChains(l)
	resp := make([]filterchain, 0, len(fChains))
	for _, filterChain := range fChains {
		fc := filterchain{
			destination: getFilterType(filterChain.GetFilters()),
			match:       getMatches(filterChain.FilterChainMatch),
		}
		resp = append(resp, fc)
	}
	return resp
}

    }

    protected void createFilterChain() {
        FilterChain chain = createDefaultFilterChain();
        for (final Filter element : filterList) {
            chain = appendFilterChain(element, chain);
        }
        filterChain = chain;
    }

    protected FilterChain appendFilterChain(final Filter filter, final FilterChain chain) {
        return query -> filter.parse(query, chain);
    }

    }

    protected void createFilterChain() {
        FilterChain chain = createDefaultFilterChain();
        for (final Filter element : filterList) {
            chain = appendFilterChain(element, chain);
        }
        filterChain = chain;
    }

    protected FilterChain appendFilterChain(final Filter filter, final FilterChain chain) {

import java.io.IOException;

import javax.servlet.FilterChain;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

public interface WebApiManager {

    boolean matches(HttpServletRequest request);

    void process(HttpServletRequest request, HttpServletResponse response, FilterChain chain) throws IOException, ServletException;