001/* 002 * Licensed to the Apache Software Foundation (ASF) under one or more 003 * contributor license agreements. See the NOTICE file distributed with 004 * this work for additional information regarding copyright ownership. 005 * The ASF licenses this file to You under the Apache License, Version 2.0 006 * (the "License"); you may not use this file except in compliance with 007 * the License. You may obtain a copy of the License at 008 * 009 * http://www.apache.org/licenses/LICENSE-2.0 010 * 011 * Unless required by applicable law or agreed to in writing, software 012 * distributed under the License is distributed on an "AS IS" BASIS, 013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 014 * See the License for the specific language governing permissions and 015 * limitations under the License. 016 */ 017package org.apache.wicket.http2.markup.head.undertow; 018 019import javax.servlet.http.HttpServletRequest; 020 021import org.apache.wicket.http2.markup.head.PushBuilder; 022import org.apache.wicket.http2.markup.head.PushItem; 023import org.apache.wicket.http2.markup.head.PushItemHeaderValue; 024import org.apache.wicket.http2.markup.head.PushItemHeaderValue.HeaderOperation; 025import org.apache.wicket.request.Request; 026import org.apache.wicket.request.cycle.RequestCycle; 027import org.slf4j.Logger; 028import org.slf4j.LoggerFactory; 029 030/** 031 * Allows to push resources with the Undertow 2+ specific push builder API 032 * 033 * @author Tobias Soloschenko 034 */ 035public class UndertowPushBuilder implements PushBuilder 036{ 037 private static final Logger LOG = LoggerFactory.getLogger(UndertowPushBuilder.class); 038 039 @Override 040 public void push(HttpServletRequest httpServletRequest, PushItem... pushItems) 041 { 042 Request request = RequestCycle.get().getRequest(); 043 HttpServletRequest httpRequest = (HttpServletRequest) request.getContainerRequest(); 044 io.undertow.servlet.spec.HttpServletRequestImpl undertowRequest = (io.undertow.servlet.spec.HttpServletRequestImpl) httpRequest; 045 // Added explicit cast here to ensure this is the implementation of undertow 046 io.undertow.servlet.spec.PushBuilderImpl pushBuilder = (io.undertow.servlet.spec.PushBuilderImpl)undertowRequest.newPushBuilder(); 047 if (pushBuilder != null) 048 { 049 for (PushItem pushItem : pushItems) 050 { 051 pushBuilder.path(pushItem.getUrl()); 052 pushItem.getHeaders().entrySet().stream().forEach(pushHeader -> { 053 String key = pushHeader.getKey(); 054 PushItemHeaderValue value = pushHeader.getValue(); 055 if(value.getOperation() == HeaderOperation.ADD){ 056 pushBuilder.addHeader(key, value.getValue()); 057 }else{ 058 pushBuilder.setHeader(key, value.getValue()); 059 } 060 }); 061 pushBuilder.push(); 062 } 063 } 064 else 065 { 066 LOG.warn("Attempted to use HTTP2 Push but it is not supported for the current request: {}!", 067 httpRequest); 068 } 069 } 070}