Optimize:optimize transfer (#636)
lingxiao,wu
2 years ago
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GitHub
parent
3306ef56c8
commit
a0737092e7
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/*
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* Tencent is pleased to support the open source community by making Spring Cloud Tencent available.
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*
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* Copyright (C) 2019 THL A29 Limited, a Tencent company. All rights reserved.
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*
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* Licensed under the BSD 3-Clause License (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* https://opensource.org/licenses/BSD-3-Clause
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*
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* Unless required by applicable law or agreed to in writing, software distributed
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* under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR
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* CONDITIONS OF ANY KIND, either express or implied. See the License for the
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* specific language governing permissions and limitations under the License.
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*
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*/
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package com.tencent.cloud.metadata.core;
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import java.util.Arrays;
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import java.util.Enumeration;
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import java.util.List;
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import java.util.Map;
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import java.util.Set;
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import javax.servlet.http.HttpServletRequest;
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import com.tencent.cloud.common.metadata.MetadataContextHolder;
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import com.tencent.cloud.common.util.JacksonUtils;
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import org.springframework.http.HttpHeaders;
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import org.springframework.http.server.reactive.ServerHttpRequest;
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import org.springframework.util.CollectionUtils;
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/**
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* According to request and trans-headers(key list in string type) in metadata, build
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* the complete headers(key-value list in map type) into metadata.
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*
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* @author lingxiao.wlx
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*/
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public final class TransHeadersTransfer {
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private TransHeadersTransfer() {
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}
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/**
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* According to {@link HttpServletRequest} and trans-headers(key list in string type) in metadata, build
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* the complete headers(key-value list in map type) into metadata.
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*
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* @param httpServletRequest httpServletRequest
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*/
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public static void transfer(HttpServletRequest httpServletRequest) {
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// transHeaderMetadata: for example, {"trans-headers" : {"header1,header2,header3":""}}
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Map<String, String> transHeaderMetadata = MetadataContextHolder.get().getTransHeaders();
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if (!CollectionUtils.isEmpty(transHeaderMetadata)) {
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String transHeaders = transHeaderMetadata.keySet().stream().findFirst().orElse("");
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String[] transHeaderArray = transHeaders.split(",");
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Enumeration<String> httpHeaders = httpServletRequest.getHeaderNames();
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while (httpHeaders.hasMoreElements()) {
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String httpHeader = httpHeaders.nextElement();
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Arrays.stream(transHeaderArray).forEach(transHeader -> {
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if (transHeader.equals(httpHeader)) {
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String httpHeaderValue = httpServletRequest.getHeader(httpHeader);
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// for example, {"trans-headers-kv" : {"header1":"v1","header2":"v2"...}}
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MetadataContextHolder.get().setTransHeadersKV(httpHeader, httpHeaderValue);
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}
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});
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}
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}
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}
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/**
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* According to {@link ServerHttpRequest} and trans-headers(key list in string type) in metadata, build
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* the complete headers(key-value list in map type) into metadata.
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*
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* @param serverHttpRequest serverHttpRequest
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*/
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public static void transfer(ServerHttpRequest serverHttpRequest) {
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// transHeaderMetadata: for example, {"trans-headers" : {"header1,header2,header3":""}}
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Map<String, String> transHeaderMetadata = MetadataContextHolder.get().getTransHeaders();
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if (!CollectionUtils.isEmpty(transHeaderMetadata)) {
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String transHeaders = transHeaderMetadata.keySet().stream().findFirst().orElse("");
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String[] transHeaderArray = transHeaders.split(",");
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HttpHeaders headers = serverHttpRequest.getHeaders();
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Set<String> headerKeys = headers.keySet();
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for (String httpHeader : headerKeys) {
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Arrays.stream(transHeaderArray).forEach(transHeader -> {
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if (transHeader.equals(httpHeader)) {
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List<String> list = headers.get(httpHeader);
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String httpHeaderValue = JacksonUtils.serialize2Json(list);
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// for example, {"trans-headers-kv" : {"header1":"v1","header2":"v2"...}}
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MetadataContextHolder.get().setTransHeadersKV(httpHeader, httpHeaderValue);
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}
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});
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}
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}
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}
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}
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