forked from google/eleventy-high-performance-blog
-
Notifications
You must be signed in to change notification settings - Fork 0
Commit
This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository.
- Loading branch information
Showing
10 changed files
with
238 additions
and
163 deletions.
There are no files selected for viewing
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,150 @@ | ||
| const GA_ENDPOINT = `https://www.google-analytics.com/collect`; | ||
|
|
||
| // Domains to allowlist. Replace with your own! | ||
| const originallowlist = []; | ||
| // Update me. | ||
| allowlistDomain("eleventy-high-performance-blog-sample.industrialempathy.com/"); | ||
|
|
||
| let hot = false; | ||
| let age = Date.now(); | ||
|
|
||
| export const config = { | ||
| runtime: "experimental-edge", | ||
| }; | ||
|
|
||
| export default async function (req, event) { | ||
| const url = new URL(req.url); | ||
| if (req.method === "GET" && !url.search) { | ||
| return new Response("OK", { status: 200 }); | ||
| } | ||
|
|
||
| const origin = req.headers.get("origin") || ""; | ||
| console.log(`Received ${req.method} request from, origin: ${origin}`); | ||
|
|
||
| const isOriginallowlisted = | ||
| originallowlist.indexOf(origin) >= 0 || | ||
| origin.endsWith("-cramforce.vercel.app") || | ||
| origin.endsWith("-team-malte.vercel.app"); | ||
| if (!isOriginallowlisted) { | ||
| console.info("Bad origin", origin); | ||
| return new Response("Not found", { status: 404 }); | ||
| } | ||
|
|
||
| let cacheControl = "no-store"; | ||
| if (url.searchParams.get("ec") == "noscript") { | ||
| cacheControl = "max-age: 30"; | ||
| } | ||
| const headers = { | ||
| "Access-Control-Allow-Origin": isOriginallowlisted | ||
| ? origin | ||
| : originallowlist[0], | ||
| "Cache-Control": cacheControl, | ||
| "x-age": `${hot}; ${Date.now() - age}`, | ||
| }; | ||
| hot = true; | ||
|
|
||
| event.waitUntil(proxyToGoogleAnalytics(req, url, await req.text())); | ||
| return new Response("D", { status: 200, headers }); | ||
| } | ||
|
|
||
| function allowlistDomain(domain, addWww = true) { | ||
| const prefixes = ["https://", "http://"]; | ||
| if (addWww) { | ||
| prefixes.push("https://www."); | ||
| prefixes.push("http://www."); | ||
| } | ||
| prefixes.forEach((prefix) => originallowlist.push(prefix + domain)); | ||
| } | ||
|
|
||
| async function cid(ip, otherStuff) { | ||
| if (ip) { | ||
| const encoder = new TextEncoder(); | ||
| const data = encoder.encode( | ||
| "sha256", | ||
| ip + otherStuff + "this is open source" | ||
| ); | ||
| const hashBuffer = await crypto.subtle.digest("SHA-256", data); | ||
| const hashArray = Array.from(new Uint8Array(hashBuffer)); | ||
| const hashHex = hashArray | ||
| .map((b) => b.toString(16).padStart(2, "0")) | ||
| .join(""); | ||
| return hashHex; | ||
| } | ||
| return Math.random() * 1000; // They use a decimal looking format. It really doesn't matter. | ||
| } | ||
|
|
||
| async function proxyToGoogleAnalytics(req, url, body) { | ||
| // get GA params whether GET or POST request | ||
| const params = | ||
| req.method.toUpperCase() === "GET" | ||
| ? url.searchParams | ||
| : new URLSearchParams(body); | ||
| const headers = req.headers; | ||
|
|
||
| // attach other GA params, required for IP address since client doesn't have access to it. UA and CID can be sent from client | ||
| params.set( | ||
| "uip", | ||
| headers.get("x-forwarded-for") || headers.get("x-bb-ip") || "" | ||
| ); // ip override. Look into headers for clients IP address, as opposed to IP address of host running lambda function | ||
| params.set("ua", params.get("ua") || headers.get("user-agent") || ""); // user agent override | ||
| params.set( | ||
| "cid", | ||
| params.get("cid") || (await cid(params.get("uip", params.get("ua")))) | ||
| ); | ||
|
|
||
| const qs = params.toString(); | ||
| console.info("proxying params:", qs); | ||
|
|
||
| const reqOptions = { | ||
| method: "POST", | ||
| headers: { | ||
| "Content-Type": "image/gif", | ||
| }, | ||
| body: qs, | ||
| }; | ||
| let result; | ||
| try { | ||
| result = await fetch(GA_ENDPOINT, reqOptions); | ||
| } catch (e) { | ||
| console.error("googleanalytics error!", e); | ||
| return; | ||
| } | ||
| if (result.status == 200) { | ||
| console.debug("googleanalytics request successful"); | ||
| return; | ||
| } | ||
| console.error( | ||
| "googleanalytics status code", | ||
| result.status, | ||
| result.statusText | ||
| ); | ||
| } | ||
|
|
||
| /* | ||
| Docs on GA endpoint and example params | ||
| https://developers.google.com/analytics/devguides/collection/protocol/v1/devguide | ||
| v: 1 | ||
| _v: j67 | ||
| a: 751874410 | ||
| t: pageview | ||
| _s: 1 | ||
| dl: https://nfeld.com/contact.html | ||
| dr: https://google.com | ||
| ul: en-us | ||
| de: UTF-8 | ||
| dt: Nikolay Feldman - Software Engineer | ||
| sd: 24-bit | ||
| sr: 1440x900 | ||
| vp: 945x777 | ||
| je: 0 | ||
| _u: blabla~ | ||
| jid: | ||
| gjid: | ||
| cid: 1837873423.1522911810 | ||
| tid: UA-116530991-1 | ||
| _gid: 1828045325.1524815793 | ||
| gtm: u4d | ||
| z: 1379041260 | ||
| */ |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file was deleted.
Oops, something went wrong.
Some generated files are not rendered by default. Learn more about how customized files appear on GitHub.
Oops, something went wrong.
This file was deleted.
Oops, something went wrong.
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Oops, something went wrong.