com.alibaba.cloud.routing.feign.RoutingFeignInterceptor Maven / Gradle / Ivy
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/*
* Copyright 2022-2023 the original author or authors.
*
* Licensed 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
*
* https://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.
*/
package com.alibaba.cloud.routing.feign;
import java.util.Enumeration;
import javax.servlet.http.HttpServletRequest;
import feign.RequestInterceptor;
import feign.RequestTemplate;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.web.context.request.RequestContextHolder;
import org.springframework.web.context.request.ServletRequestAttributes;
/**
* @author HH
* @since 2.2.10-RC1
*/
public class RoutingFeignInterceptor implements RequestInterceptor {
private static final Logger LOG = LoggerFactory
.getLogger(RoutingFeignInterceptor.class);
@Override
public void apply(RequestTemplate requestTemplate) {
final HttpServletRequest request = ((ServletRequestAttributes) RequestContextHolder
.getRequestAttributes()).getRequest();
final Enumeration headerNames = request.getHeaderNames();
if (headerNames == null) {
return;
}
while (headerNames.hasMoreElements()) {
String headerName = headerNames.nextElement();
requestTemplate.header(headerName, request.getHeader(headerName));
}
}
}