package com.ard.web.controller.sample.media;
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import com.ard.oss.model.CredentialsDTO;
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import com.ard.oss.service.impl.OssServiceContext;
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import io.swagger.annotations.Api;
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import io.swagger.annotations.ApiOperation;
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import lombok.extern.slf4j.Slf4j;
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import okhttp3.*;
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import okio.BufferedSink;
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import org.springframework.beans.factory.annotation.Autowired;
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import org.springframework.beans.factory.annotation.Value;
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import org.springframework.web.bind.annotation.RequestMapping;
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import org.springframework.web.bind.annotation.RestController;
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import javax.net.ssl.*;
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import javax.servlet.http.HttpServletRequest;
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import javax.servlet.http.HttpServletResponse;
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import java.io.ByteArrayOutputStream;
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import java.io.IOException;
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import java.io.InputStream;
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import java.security.SecureRandom;
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import java.security.cert.X509Certificate;
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import java.util.Enumeration;
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import java.util.concurrent.TimeUnit;
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/**
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* MinIO STS代理控制器（适配分块上传全流程：初始化/传块/合并）
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* 解决SSL连接重置、鉴权透传、分块合并XML透传问题
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*/
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@Api(tags = "机场上传minio")
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@Slf4j
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@RestController
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@RequestMapping("/minioTransfer")
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public class MinioStsProxyController {
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// ==================== 常量配置 ====================
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private static final String PROXY_PREFIX = "/minioTransfer";
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private static final int BUFFER_SIZE = 65536; // 64K缓冲区
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private static final long MAX_MEMORY_SIZE = 1024 * 1024 * 100; // 100MB（小文件阈值）
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private static final String X_AMZ_SECURITY_TOKEN = "X-Amz-Security-Token";
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private static final String TRANSFER_ENCODING = "Transfer-Encoding";
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private static final String HOST = "Host";
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// 配置注入（支持yml配置，避免硬编码）
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@Value("${oss.endpoint}")
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private String minioEndpoint;
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private static final Integer connectTimeout = 30;
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private static final Integer readWriteTimeout = 1800;
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@Autowired
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private OssServiceContext ossService;
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// OkHttp客户端（全局单例，优化SSL/TCP）
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private static OkHttpClient httpClient;
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// 静态初始化：SSL/TCP优化（适配MinIO内网环境）
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static {
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try {
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// 1. 全局信任所有SSL证书（内网专用，生产需替换合法证书）
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TrustManager[] trustAllCerts = new TrustManager[]{
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new X509TrustManager() {
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@Override
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public void checkClientTrusted(X509Certificate[] chain, String authType) {}
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@Override
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public void checkServerTrusted(X509Certificate[] chain, String authType) {}
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@Override
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public X509Certificate[] getAcceptedIssuers() { return new X509Certificate[0]; }
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}
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};
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// 2. 强制TLS 1.2（解决MinIO SSL版本兼容问题）
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SSLContext sslContext = SSLContext.getInstance("TLSv1.2");
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sslContext.init(null, trustAllCerts, new SecureRandom());
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// 3. 构建高兼容性OkHttp客户端
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httpClient = new OkHttpClient.Builder()
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.sslSocketFactory(sslContext.getSocketFactory(), (X509TrustManager) trustAllCerts[0])
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.hostnameVerifier((hostname, session) -> true) // 禁用主机名校验
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.connectTimeout(30, TimeUnit.SECONDS)
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.readTimeout(1800, TimeUnit.SECONDS) // 30分钟读超时（适配大文件）
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.writeTimeout(1800, TimeUnit.SECONDS) // 30分钟写超时
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.connectionPool(new ConnectionPool(30, 10, TimeUnit.MINUTES)) // 扩大连接池
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.retryOnConnectionFailure(true) // 开启连接重试
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.pingInterval(10, TimeUnit.SECONDS) // TCP保活（防止连接被重置）
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.callTimeout(60, TimeUnit.SECONDS)
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.build();
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log.info("OkHttp客户端初始化完成（适配MinIO分块上传）");
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} catch (Exception e) {
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log.error("OkHttp初始化失败，降级为默认客户端", e);
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httpClient = new OkHttpClient();
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}
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}
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/**
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* 核心代理方法：适配MinIO分块上传全流程（POST初始化/PUT传块/POST合并）
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*/
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@ApiOperation("MinIO STS临时凭证通用代理（支持分块上传）")
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@RequestMapping("/**")
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public void proxyRequest(HttpServletRequest request, HttpServletResponse response) {
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String method = request.getMethod();
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String requestUri = request.getRequestURI();
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String queryString = request.getQueryString();
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long contentLength = request.getContentLengthLong();
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// 日志增强：区分分块上传阶段
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String uploadStage = getUploadStage(queryString);
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log.info("STS代理请求开始 | 阶段:{} | 方法:{} | URI:{} | 参数:{} | 内容长度:{}B",
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uploadStage, method, requestUri, queryString, contentLength);
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// 1. 构造MinIO目标地址
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String targetUrl = buildTargetUrl(requestUri, queryString);
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if (targetUrl == null) {
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sendError(response, HttpServletResponse.SC_BAD_REQUEST, "请求路径非法（缺失MinIO前缀）");
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return;
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}
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// 2. 获取并校验STS凭证（鉴权核心）
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CredentialsDTO credentials = getCredentials();
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if (credentials == null) {
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sendError(response, HttpServletResponse.SC_FORBIDDEN, "STS凭证无效/缺失");
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return;
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}
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// 3. 构建请求+转发响应（核心逻辑）
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try {
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Request okRequest = buildRequest(request, method, targetUrl, credentials);
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forwardResponse(okRequest, response);
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log.info("STS代理请求成功 | 阶段:{} | 目标地址:{}", uploadStage, targetUrl);
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} catch (Exception e) {
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log.error("STS代理请求执行异常 | 阶段:{}", uploadStage, e);
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// 友好错误提示：区分SSL/分块/鉴权错误
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String errorMsg = e.getMessage().contains("SSL") ? "SSL连接异常（请检查MinIO HTTPS配置）" :
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e.getMessage().contains("Credentials") ? "STS凭证异常" : "代理服务异常";
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sendError(response, HttpServletResponse.SC_INTERNAL_SERVER_ERROR, errorMsg);
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}
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}
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/**
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* 识别分块上传阶段（日志优化）
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*/
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private String getUploadStage(String queryString) {
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if (queryString == null) return "普通请求";
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if (queryString.contains("uploads") && !queryString.contains("uploadId")) return "分块初始化";
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if (queryString.contains("partNumber") && queryString.contains("uploadId")) return "分块上传";
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if (queryString.contains("uploadId") && !queryString.contains("partNumber")) return "分块合并";
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return "普通请求";
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}
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/**
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* 构造MinIO目标地址（兼容分块参数透传）
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*/
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private String buildTargetUrl(String requestUri, String queryString) {
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try {
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// 截取代理前缀后的路径（/minioTransfer/xxx → xxx）
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String targetPath = requestUri.substring(PROXY_PREFIX.length());
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StringBuilder urlBuilder = new StringBuilder(minioEndpoint).append(targetPath);
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// 透传分块参数（uploads/uploadId/partNumber）
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if (queryString != null && !queryString.isBlank()) {
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urlBuilder.append("?").append(queryString);
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}
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return urlBuilder.toString();
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} catch (Exception e) {
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log.error("构造MinIO目标地址失败", e);
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return null;
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}
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}
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/**
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* 获取并校验STS凭证（确保AK/SK/Token完整）
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*/
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private CredentialsDTO getCredentials() {
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try {
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CredentialsDTO dto = ossService.getCredentials();
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// 严格校验核心字段（避免鉴权失败）
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if (dto == null || dto.getAccessKeyId() == null || dto.getAccessKeySecret() == null || dto.getSecurityToken() == null) {
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log.error("STS凭证核心字段缺失：AK/SK/Token不能为空");
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return null;
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}
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log.info("STS凭证获取成功 | AK前缀:{}", dto.getAccessKeyId().substring(0, 4) + "***");
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return dto;
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} catch (Exception e) {
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log.error("获取STS凭证异常", e);
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return null;
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}
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}
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/**
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* 构建OkHttp请求（适配分块上传的请求体/头透传）
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*/
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private Request buildRequest(HttpServletRequest request, String method, String url, CredentialsDTO credentials) throws IOException {
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Request.Builder builder = new Request.Builder().url(url);
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// 1. 透传所有请求头（排除Host，OkHttp自动处理）
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Enumeration<String> headerNames = request.getHeaderNames();
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while (headerNames.hasMoreElements()) {
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String name = headerNames.nextElement();
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if (!name.equalsIgnoreCase(HOST)) {
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builder.addHeader(name, request.getHeader(name));
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}
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}
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// 2. 添加STS鉴权头（MinIO分块上传必须）
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builder.addHeader(X_AMZ_SECURITY_TOKEN, credentials.getSecurityToken());
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// 补充MinIO鉴权必要的头（防止签名失败）
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builder.addHeader("X-Amz-Date", String.valueOf(System.currentTimeMillis()));
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// 3. 构建请求体（区分小文件/大文件/分块合并XML）
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RequestBody body = null;
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if (!"GET".equalsIgnoreCase(method) && !"HEAD".equalsIgnoreCase(method)) {
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InputStream inputStream = request.getInputStream();
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long contentLength = request.getContentLengthLong();
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// 小文件：预读取到内存（稳定，适配分块上传的小文件块）
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if (contentLength > 0 && contentLength <= MAX_MEMORY_SIZE) {
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log.info("小文件/分块上传：预读取到内存，大小:{:.2f}MB", contentLength / 1024.0 / 1024.0);
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byte[] content = readInputStreamToBytes(inputStream);
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MediaType mediaType = MediaType.parse(request.getContentType() == null ? "application/xml" : request.getContentType());
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body = RequestBody.create(content, mediaType);
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}
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// 大文件/未知长度：流式上传（省内存，适配大文件分块）
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else {
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log.info("大文件/未知长度上传：使用流式传输（适配分块上传）");
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body = new RequestBody() {
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@Override
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public MediaType contentType() {
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return MediaType.parse(request.getContentType() == null ? "application/xml" : request.getContentType());
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}
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@Override
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public long contentLength() {
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return contentLength; // 避免chunked编码，适配MinIO分块
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}
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@Override
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public void writeTo(BufferedSink sink) throws IOException {
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byte[] buffer = new byte[BUFFER_SIZE];
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int len;
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long totalWritten = 0;
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try (InputStream in = inputStream) {
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while ((len = in.read(buffer)) != -1) {
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sink.write(buffer, 0, len);
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totalWritten += len;
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// 每100MB刷新一次（防止缓冲区溢出）
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if (totalWritten % (1024 * 1024 * 100) == 0) {
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sink.flush();
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log.info("分块上传进度：已写入{:.2f}MB", totalWritten / 1024.0 / 1024.0);
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}
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}
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sink.flush();
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log.info("流式上传完成，总写入：{:.2f}MB", totalWritten / 1024.0 / 1024.0);
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}
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}
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};
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}
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}
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return builder.method(method, body).build();
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}
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/**
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* 读取InputStream到字节数组（小文件/分块专用）
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*/
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private byte[] readInputStreamToBytes(InputStream inputStream) throws IOException {
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try (ByteArrayOutputStream bos = new ByteArrayOutputStream()) {
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byte[] buffer = new byte[BUFFER_SIZE];
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int len;
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while ((len = inputStream.read(buffer)) != -1) {
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bos.write(buffer, 0, len);
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}
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bos.flush();
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return bos.toByteArray();
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}
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}
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/**
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* 转发MinIO响应到客户端（关键：透传ETag/UploadId等分块参数）
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*/
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private void forwardResponse(Request request, HttpServletResponse response) throws IOException {
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try (Response okResponse = httpClient.newCall(request).execute()) {
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// 1. 基础响应配置（确保分块合并的XML响应正常透传）
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response.setStatus(okResponse.code());
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response.setCharacterEncoding("UTF-8");
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String contentType = okResponse.header("Content-Type");
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if (contentType != null) {
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response.setContentType(contentType); // 透传XML/JSON类型
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}
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// 2. 透传所有响应头（重点：ETag/UploadId等分块核心参数）
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Headers headers = okResponse.headers();
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for (String name : headers.names()) {
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// 排除Transfer-Encoding（防止Tomcat重复编码）
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if (!name.equalsIgnoreCase(TRANSFER_ENCODING)) {
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response.setHeader(name, headers.get(name));
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}
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}
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// 3. 透传响应体（分块初始化的UploadId、合并的成功响应等）
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ResponseBody responseBody = okResponse.body();
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if (responseBody != null) {
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try (InputStream in = responseBody.byteStream()) {
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byte[] buffer = new byte[BUFFER_SIZE];
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int len;
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while ((len = in.read(buffer)) != -1) {
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response.getOutputStream().write(buffer, 0, len);
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}
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response.getOutputStream().flush();
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}
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}
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}
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}
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/**
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* 统一返回错误响应
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*/
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private void sendError(HttpServletResponse response, int code, String msg) {
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try {
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response.sendError(code, msg);
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} catch (IOException e) {
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log.error("发送错误响应失败", e);
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}
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}
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}
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