How to use

mapTo

method

in

cc.blynk.core.http.handlers.url.UrlReWriterHandler

@Override
public void channelRead(ChannelHandlerContext ctx, Object msg) throws Exception {
  if (msg instanceof FullHttpRequest) {
    FullHttpRequest request = (FullHttpRequest) msg;
    String requestUri = request.uri();
    String mapToURI = mapTo(requestUri);
    log.trace("Mapping from {} to {}", requestUri, mapToURI);
    request.setUri(mapToURI);
  }
  super.channelRead(ctx, msg);
}