/**
   * Get HttpResourceModel which matches the HttpMethod of the request.
   *
   * @param routableDestinations List of ResourceModels.
   * @param targetHttpMethod HttpMethod.
   * @param requestUri request URI.
   * @return RoutableDestination that matches httpMethod that needs to be handled. null if there are
   *     no matches.
   */
  private List<PatternPathRouterWithGroups.RoutableDestination<HttpResourceModel>>
      getMatchedDestination(
          List<PatternPathRouterWithGroups.RoutableDestination<HttpResourceModel>>
              routableDestinations,
          HttpMethod targetHttpMethod,
          String requestUri) {

    Iterable<String> requestUriParts = Splitter.on('/').omitEmptyStrings().split(requestUri);
    List<PatternPathRouterWithGroups.RoutableDestination<HttpResourceModel>> matchedDestinations =
        Lists.newArrayListWithExpectedSize(routableDestinations.size());
    int maxExactMatch = 0;
    int maxGroupMatch = 0;
    int maxPatternLength = 0;

    for (PatternPathRouterWithGroups.RoutableDestination<HttpResourceModel> destination :
        routableDestinations) {
      HttpResourceModel resourceModel = destination.getDestination();
      int groupMatch = destination.getGroupNameValues().size();

      for (HttpMethod httpMethod : resourceModel.getHttpMethod()) {
        if (targetHttpMethod.equals(httpMethod)) {

          int exactMatch =
              getExactPrefixMatchCount(
                  requestUriParts,
                  Splitter.on('/').omitEmptyStrings().split(resourceModel.getPath()));

          // When there are multiple matches present, the following precedence order is used -
          // 1. template path that has highest exact prefix match with the url is chosen.
          // 2. template path has the maximum groups is chosen.
          // 3. finally, template path that has the longest length is chosen.
          if (exactMatch > maxExactMatch) {
            maxExactMatch = exactMatch;
            maxGroupMatch = groupMatch;
            maxPatternLength = resourceModel.getPath().length();

            matchedDestinations.clear();
            matchedDestinations.add(destination);
          } else if (exactMatch == maxExactMatch && groupMatch >= maxGroupMatch) {
            if (groupMatch > maxGroupMatch || resourceModel.getPath().length() > maxPatternLength) {
              maxGroupMatch = groupMatch;
              maxPatternLength = resourceModel.getPath().length();
              matchedDestinations.clear();
            }
            matchedDestinations.add(destination);
          }
        }
      }
    }
    return matchedDestinations;
  }
Example #2
0
  @Override
  protected void messageReceived(ChannelHandlerContext ctx, Object msg) {
    if (msg instanceof HttpRequest) {
      HttpRequest request = _request = (HttpRequest) msg;
      HttpMethod method = request.method();
      HttpHeaders headers = request.headers();
      QueryStringDecoder query = new QueryStringDecoder(request.uri());

      if (HttpHeaderUtil.is100ContinueExpected(request))
        ctx.write(new DefaultFullHttpResponse(HTTP_1_1, CONTINUE));

      //            if (headers != null) for (Map.Entry<CharSequence, CharSequence> h : headers) {}

      if (method.equals(HttpMethod.GET)) RamdRequest.build(query.path(), query.parameters());
    }

    if (msg instanceof HttpContent) {
      ByteBuf bb = ((HttpContent) msg).content();
      if (bb.isReadable()) {}
      _buf.append("Done.");
      writeResponse((HttpContent) msg, ctx);
    }
  }