MoeWang 大佬有话说 :
Workers如何实现类似Nginx location的功能？
本帖最后由 MoeWang 于 2021-7-10 19:11 编辑
如题，是这样的，我把原来vercel的b2对象存储反代移到workers来了（看中了带宽联盟），然后我就找了找论坛里的workers反代隐藏path，然后就卡在这里了。。原因是我在vercel里面设置过不同的路由，比如/avatar/的path是用来反代gravatar的，传入的path符合条件的话（比如https://workers/avatar/xxxxxx）就执行反代gravatar的代码；
如果传入的URL不包含avatar（比如https://workers/test.jpg或者https://workers/public/123.js）就继续反代对象存储。
让我写个nginx或者vercel的那种path路由我会，但是换用service workers就真的不会了，
主要是如何监听不同路径这块代码不是很熟悉。如果要想复杂些的话这种要用if吗？
然后可能真的没找对关键词，网上我就没搜着service workers 分path执行的相关教程，所以来问问各位大佬。能给我一篇讲如何监听不同目录的文档或者教程也行。。吐了。。。救救孩子吧
目前搜到的代码如下：
//gravatar反代
addEventListener(
"fetch",event => {
let url=new URL(event.request.url);
url.hostname="secure.gravatar.com";
url.pathname="/avatar/";
let request=new Request(url,event.request);
event. respondWith(
fetch(request)
)
}
)
//gravatar反代 结束
//B2 存储隐藏桶 开始
‘use strict’;
const b2Domain = ‘cdn.xxxxx’; // configure this as per instructions above
const b2Bucket = ‘xxxxxxx; // configure this as per instructions above
const b2UrlPath = `/file/${b2Bucket}/`;
addEventListener(‘fetch’, event => {
return event.respondWith(fileReq(event));
});
// define the file extensions we wish to add basic access control headers to
const corsFileTypes = [‘png’, ‘jpg’, ‘gif’, ‘jpeg’, ‘webp’];
// backblaze returns some additional headers that are useful for debugging, but unnecessary in production. We can remove these to save some size
const removeHeaders = [
‘x-bz-content-sha1’,
‘x-bz-file-id’,
‘x-bz-file-name’,
‘x-bz-info-src_last_modified_millis’,
‘X-Bz-Upload-Timestamp’,
‘Expires’
];
const expiration = 31536000; // override browser cache for images – 1 year
// define a function we can re-use to fix headers
const fixHeaders = function(url, status, headers){
let newHdrs = new Headers(headers);
// add basic cors headers for images
if(corsFileTypes.includes(url.pathname.split(‘.’).pop())){
newHdrs.set(‘Access-Control-Allow-Origin’, ‘*’);
}
// override browser cache for files when 200
if(status === 200){
newHdrs.set(‘Cache-Control’, "public, max-age=" + expiration);
}else{
// only cache other things for 5 minutes
newHdrs.set(‘Cache-Control’, ‘public, max-age=300’);
}
// set ETag for efficient caching where possible
const ETag = newHdrs.get(‘x-bz-content-sha1’) || newHdrs.get(‘x-bz-info-src_last_modified_millis’) || newHdrs.get(‘x-bz-file-id’);
if(ETag){
newHdrs.set(‘ETag’, ETag);
}
// remove unnecessary headers
removeHeaders.forEach(header => {
newHdrs.delete(header);
});
return newHdrs;
};
async function fileReq(event){
const cache = caches.default; // Cloudflare edge caching
const url = new URL(event.request.url);
if(url.host === b2Domain && !url.pathname.startsWith(b2UrlPath)){
url.pathname = b2UrlPath + url.pathname;
}
let response = await cache.match(url); // try to find match for this request in the edge cache
if(response){
// use cache found on Cloudflare edge. Set X-Worker-Cache header for helpful debug
let newHdrs = fixHeaders(url, response.status, response.headers);
newHdrs.set(‘X-Worker-Cache’, "true");
return new Response(response.body, {
status: response.status,
statusText: response.statusText,
headers: newHdrs
});
}
// no cache, fetch image, apply Cloudflare lossless compression
response = await fetch(url, {cf: {polish: "lossless"}});
let newHdrs = fixHeaders(url, response.status, response.headers);
if(response.status === 200){
response = new Response(response.body, {
status: response.status,
statusText: response.statusText,
headers: newHdrs
});
}else{
response = new Response(‘Not Found!’, { status: 404 })
}
event.waitUntil(cache.put(url, response.clone()));
return response;
}
//B2 存储桶 结束
另外本帖不会255，我也没有255的习惯
滴滴单车 大佬有话说 :
https://github.com/kwhitley/itty-router
https://github.com/cfworker/cfworker/tree/main/packages/web
https://github.com/berstend/tiny-request-router