/**
* 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;
}
@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);
}
}