index.js

/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
*/

/*
* This is a Node.js script to get a list of all add-on studies deployed
* through Normandy by their slug name and file size. This requires joining
* information from the Normandy API and response header info from AWS, where
* each add-on's XPI is hosted.
*
* How to run:
*
*   cd addoninfo
*   yarn install
*   node index.js
*
* Generated output is 'addonInfo.json'
*/

const fetch = require("node-fetch");
const fs = require("fs");
const { promisify } = require("util");

const NORMANDY_API_BASE = "https://normandy.cdn.mozilla.net/api/v3";

async function getAddonInfo() {
  const addonInfo = {};

  for await (const recipe of getAllRecipesByAction("opt-out-study")) {
    const { name, addonUrl } = recipe.arguments;

    if (!addonUrl) {
      console.error(`recipe ${name} has no addonUrl`);
      continue;
    }
    if (!recipe.filter_expression.includes("isFirstRun")) {
      continue;
    }

    const res = await fetch(addonUrl, { method: 'HEAD' });
    addonInfo[name] = {
      addonUrl,
      name,
      addonSize: parseInt(res.headers.get("content-length")),
    }
  }

  await promisify(fs.writeFile)("addonInfo.json", JSON.stringify(addonInfo, null, 4));
}

async function* getAllRecipesByAction(action) {
  let url = `${NORMANDY_API_BASE}/recipe/?action=${action}`;

  while (url) {
    const res = await fetch(url);
    const data = await res.json();
    for (const recipe of data.results) {
      yield recipe;
    }
    url = data.next;
  }
}

getAddonInfo();

package.json

{
  "name": "addoninfo",
  "version": "1.0.0",
  "main": "index.js",
  "license": "MIT",
  "dependencies": {
    "node-fetch": "^2.1.2"
  }
}

yarn.lock

# THIS IS AN AUTOGENERATED FILE. DO NOT EDIT THIS FILE DIRECTLY.
# yarn lockfile v1


node-fetch@^2.1.2:
  version "2.1.2"
  resolved "https://registry.yarnpkg.com/node-fetch/-/node-fetch-2.1.2.tgz#ab884e8e7e57e38a944753cec706f788d1768bb5"