com.buession.web.reactive.aop.handler.ReactiveResponseHeadersAnnotationHandler Maven / Gradle / Ivy

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/*
 * Licensed to the Apache Software Foundation (ASF) under one or more contributor license agreements.
 * See the NOTICE file distributed with this work for additional information regarding copyright ownership.
 * The ASF licenses this file to you under the Apache License, Version 2.0 (the "License"); you may not
 * use this file except in compliance with the License. You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software distributed under the License is
 * distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and limitations under the License.
 *
 * =========================================================================================================
 *
 * This software consists of voluntary contributions made by many individuals on behalf of the
 * Apache Software Foundation. For more information on the Apache Software Foundation, please see
 * .
 *
 * +-------------------------------------------------------------------------------------------------------+
 * | License: http://www.apache.org/licenses/LICENSE-2.0.txt 										       |
 * | Author: Yong.Teng  													       |
 * | Copyright @ 2013-2019 Buession.com Inc.														       |
 * +-------------------------------------------------------------------------------------------------------+
 */
package com.buession.web.reactive.aop.handler;

import com.buession.aop.MethodInvocation;
import com.buession.core.validator.Validate;
import com.buession.web.aop.handler.AbstractResponseHeadersAnnotationHandler;
import com.buession.web.http.response.ResponseHeader;
import com.buession.web.http.response.ResponseHeaders;
import com.buession.web.reactive.aop.AopUtils;
import com.buession.web.reactive.http.ServerHttp;
import com.buession.web.reactive.http.response.ResponseUtils;
import com.buession.web.reactive.aop.MethodUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.http.HttpHeaders;
import org.springframework.http.server.reactive.ServerHttpResponse;

import java.lang.reflect.Method;

/**
 * @author Yong.Teng
 */
public class ReactiveResponseHeadersAnnotationHandler extends AbstractResponseHeadersAnnotationHandler {

    private final static Logger logger = LoggerFactory.getLogger(ReactiveResponseHeadersAnnotationHandler.class);

    public ReactiveResponseHeadersAnnotationHandler(){
        super();
    }

    @Override
    public void execute(MethodInvocation mi, ResponseHeaders responseHeaders){
        ServerHttp serverHttp = AopUtils.getServerHttp(mi);
        doExecute(serverHttp, responseHeaders);
    }

    @Override
    public Object execute(Object target, Method method, Object[] arguments, ResponseHeaders responseHeaders){
        ServerHttp serverHttp = MethodUtils.createServerHttpFromMethodArguments(arguments);
        doExecute(serverHttp, responseHeaders);
        return null;
    }

    private final static void doExecute(final ServerHttp serverHttp, final ResponseHeaders responseHeaders){
        if(serverHttp == null || serverHttp.getResponse() == null){
            logger.debug("{} is null.", serverHttp == null ? "ServerHttp" : "ServerHttpResponse");
            return;
        }

        ResponseHeader[] headers = responseHeaders.value();

        if(Validate.isEmpty(headers) == false){
            ServerHttpResponse response = serverHttp.getResponse();
            HttpHeaders httpHeaders = response.getHeaders();

            for(ResponseHeader header : headers){
                if(EXPIRES.equalsIgnoreCase(header.name()) == true){
                    ResponseUtils.httpCache(response, Integer.parseInt(header.value()));
                }else{
                    httpHeaders.set(header.name(), header.value());
                }
            }
        }
    }

}