1 /* 2 * ==================================================================== 3 * Licensed to the Apache Software Foundation (ASF) under one 4 * or more contributor license agreements. See the NOTICE file 5 * distributed with this work for additional information 6 * regarding copyright ownership. The ASF licenses this file 7 * to you under the Apache License, Version 2.0 (the 8 * "License"); you may not use this file except in compliance 9 * with the License. You may obtain a copy of the License at 10 * 11 * http://www.apache.org/licenses/LICENSE-2.0 12 * 13 * Unless required by applicable law or agreed to in writing, 14 * software distributed under the License is distributed on an 15 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY 16 * KIND, either express or implied. See the License for the 17 * specific language governing permissions and limitations 18 * under the License. 19 * ==================================================================== 20 * 21 * This software consists of voluntary contributions made by many 22 * individuals on behalf of the Apache Software Foundation. For more 23 * information on the Apache Software Foundation, please see 24 * <http://www.apache.org/>. 25 * 26 */ 27 28 package org.apache.hc.core5.http2; 29 30 import java.util.List; 31 32 import org.apache.hc.core5.http.Header; 33 import org.apache.hc.core5.http.HttpException; 34 import org.apache.hc.core5.http.HttpMessage; 35 36 /** 37 * Abstract message converter intended to convert from a list of HTTP/2 headers to object 38 * representing an HTTP message and from an object representing an HTTP message to a list 39 * of HTTP/2 headers. 40 * 41 * @param <T> represents {@link HttpMessage} 42 * 43 * @since 5.0 44 */ 45 public interface H2MessageConverter<T extends HttpMessage> { 46 47 /** 48 * Converts given list of HTTP/2 headers to a {@link HttpMessage}. 49 * 50 * @param headers list of HTTP/2 headers 51 * @return HTTP message 52 * @throws HttpException in case of HTTP protocol violation 53 */ 54 T convert(List<Header> headers) throws HttpException; 55 56 /** 57 * Converts given {@link HttpMessage} to a list of HTTP/2 headers. 58 * 59 * @param message HTTP message 60 * @return list of HTTP/2 headers 61 * @throws HttpException in case of HTTP protocol violation 62 */ 63 List<Header> convert(T message) throws HttpException; 64 65 }