Class RouterFilter

xds/src/main/java/io/grpc/xds/RouterFilter.java:24–77

Router filter implementation. Currently this filter does not parse any field in the config.

 * Router filter implementation. Currently this filter does not parse any field in the config.
 */
final class RouterFilter implements Filter {
  private static final RouterFilter INSTANCE = new RouterFilter();

  static final String TYPE_URL =
      "type.googleapis.com/envoy.extensions.filters.http.router.v3.Router";

  static final FilterConfig ROUTER_CONFIG = new FilterConfig() {
    @Override
    public String typeUrl() {
      return TYPE_URL;
    }

    @Override
    public String toString() {
      return "ROUTER_CONFIG";
    }
  };

  static final class Provider implements Filter.Provider {
    @Override
    public String[] typeUrls() {
      return new String[]{TYPE_URL};
    }

    @Override
    public boolean isClientFilter() {
      return true;
    }

    @Override
    public boolean isServerFilter() {
      return true;
    }

    @Override
    public RouterFilter newInstance(String name) {
      return INSTANCE;
    }

    @Override
    public ConfigOrError<? extends FilterConfig> parseFilterConfig(
        Message rawProtoMessage, FilterConfigParseContext context) {
      return ConfigOrError.fromConfig(ROUTER_CONFIG);
    }

    @Override
    public ConfigOrError<? extends FilterConfig> parseFilterConfigOverride(
        Message rawProtoMessage, FilterConfigParseContext context) {
      return ConfigOrError.fromError("Router Filter should not have override config");
    }
  }

  private RouterFilter() {}
}