symfony – 将cookie传递给CloudFront源但阻止缓存

我在Symfony Web应用程序前面使用CloudFront作为缓存.要根据用户的角色(管理员,客户……)获取缓存,我会在Lambda @ Edge Viewer请求触发器中生成基于用户角色的哈希.我将该哈希作为请求标头传递给我的源X-User-Context-Hash.

我现在的问题是我需要将PHPSESSID cookie传递给我的来源以获得正确的缓存响应,但我不想将缓存基于PHPSESSID的值.我只需要我的缓存响应基于X-User-Context-Hash的值而不是我的会话cookie.

下面的图片应该详细解释我的问题

有没有可能实现这一目标？

非常感谢任何帮助.

这是我的Lambda @ Edge Viewer请求触发器：

'use strict';
 
function parseCookies(headers) {
    const parsedCookie = {};
    if (headers.cookie) {
 
        console.log(`${headers.cookie[0].value}`);
 
        headers.cookie[0].value.split(';').forEach((cookie) => {
            if (cookie) {
                const parts = cookie.split('=');
                parsedCookie[parts[0].trim()] = parts[1].trim();
            }
        });
    }
    return parsedCookie;
}
 
exports.handler = (event,context,callback) => {
    const request = event.Records[0].cf.request;
    const headers = request.headers;
 
    const https = require('https');
 
    // Read session cookie
    const parsedCookies = parseCookies(headers);
    let cookie = '';
    if (parsedCookies) {
        if(parsedCookies['PHPSESSID']) {
            cookie = `PHPSESSID=${parsedCookies['PHPSESSID']}`;
        }
    }
 
    console.log(`Cookie: ${cookie}`);
 
    // Send request to origin host at /_fos_user_context_hash
    // passing the original session cookie
    const options = {
        hostname: `${request.headers.host[0].value}`,port: 443,path: '/_fos_user_context_hash',method: 'HEAD',headers: {
            'Cookie': cookie,'Accept': 'application/vnd.fos.user-context-hash','Vary' : 'Cookie'
        }
    };
 
    const req = https.request(options,(res) => {
      console.log('statusCode:',res.statusCode);
      console.log('headers:',res.headers);
 
      // Read the X-User-Context-Hash from the hash endpoint
      const headerName = 'X-User-Context-Hash';
      let hash = 'anonymous';
 
      if (res.headers[headerName.toLowerCase()]) {
        hash = res.headers[headerName.toLowerCase()];
      }
 
      // Append X-User-Context-Hash before passing request on to CF
      request.headers[headerName.toLowerCase()] = [{ key: headerName,value: hash }];  
 
      callback(null,request);
 
    }).on('error',(e) => {
      console.error(e);
      // Forward request anyway
      callback(null,request);
    });
 
    req.end();
}
 
 
;

解决方法

这是我最终解决了我的问题：

CloudFront行为

我将行为配置为不将任何cookie转发到源,但仅基于头部主机和X-User-Context-Hash进行缓存(参见屏幕截图).

下图解释了我的lambda @ edge过程：

>在“查看器请求”触发器中,我读取了名为PHPSESSID和REMEMBERME的基于用户的cookie,并通过X-Session-Cookies标头传递这些值.
>如果我的请求URL和给定的主机以及X-User-Context-Hash标头匹配,则Cloud-Front将返回缓存的项目并在此处停止.
>如果没有匹配,则触发“Origin Request”触发器.当该事件触发自定义标头时,X-Session-Cookies可用.因此,我从X-Session-Cookies标头中获取值,并将request.headers.cookie的值设置为该值.此步骤确保PHPSESSID和REMEMBERME cookie在页面缓存之前都传递到源.

我的Lambda @ Edge功能：

查看者请求触发器：

'use strict';
 
function parseCookies(headers) {
    const parsedCookie = {};
    if (headers.cookie) {
 
        console.log(`${headers.cookie[0].value}`);
 
        headers.cookie[0].value.split(';').forEach((cookie) => {
            if (cookie) {
                const parts = cookie.split('=');
                parsedCookie[parts[0].trim()] = parts[1].trim();
            }
        });
    }
    return parsedCookie;
}
 
exports.handler = (event,callback) => {
    const request = event.Records[0].cf.request;
    const headers = request.headers;
 
    const https = require('https');
 
    let sessionId = '';
 
    // Read session cookie
    const parsedCookies = parseCookies(headers);
    let cookie = '';
    if (parsedCookies) {
        if(parsedCookies['PHPSESSID']) {
            cookie = `PHPSESSID=${parsedCookies['PHPSESSID']}`;
        }
        if(parsedCookies['REMEMBERME']) {
            if (cookie.length > 0) {
                cookie += ';';
            }
            cookie += `REMEMBERME=${parsedCookies['REMEMBERME']}`;
        }
    }
 
    console.log(`Cookie: ${cookie}`);
 
    // Send request to origin host at /_fos_user_context_hash
    // passing the original session cookie
    const options = {
        hostname: `${request.headers.host[0].value}`,value: hash }];
 
      const sessionHeaderName = 'X-Session-Cookies';
      request.headers[sessionHeaderName.toLowerCase()] = [{ key: sessionHeaderName,value: cookie }];  
 
      callback(null,request);
    });
 
    req.end();
}
 
 
;

原始请求触发器：

exports.handler = (event,callback) => {
    const request = event.Records[0].cf.request;
 
    const sessionHeaderName = 'X-Session-Cookies';
 
    let cookie = '';
    if (request.headers[sessionHeaderName.toLowerCase()]) {
        console.log(request.headers[sessionHeaderName.toLowerCase()]);
        cookie = request.headers[sessionHeaderName.toLowerCase()][0].value;
    }
 
    request.headers.cookie = [{ key : 'Cookie',value : cookie }];
 
    callback(null,request);
};

symfony – 将cookie传递给CloudFront源但阻止缓存

解决方法

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