Move desktop-related code to "desktop" subfolder (#872)

Summary: Pull Request resolved: https://github.com/facebook/flipper/pull/872 Move all the JS code related to desktop app to "desktop" subfolder. The structure of "desktop" folder: - `src` - JS code of Flipper desktop app executing in Electron Renderer (Chrome) process. This folder also contains all the Flipper plugins in subfolder "src/plugins". - `static` - JS code of Flipper desktop app bootstrapping executing in Electron Main (Node.js) process - `pkg` - Flipper packaging lib and CLI tool - `doctor` - Flipper diagnostics lib and CLI tool - `scripts` - Build scripts for Flipper desktop app - `headless` - Headless version of Flipper app - `headless-tests` - Integration tests running agains Flipper headless version Reviewed By: passy Differential Revision: D20249304 fbshipit-source-id: 9a51c63b51b92b758a02fc8ebf7d3d116770efe9
2020-03-14 14:26:07 -07:00
parent a60e6fee87
commit 85c13bb1f3
607 changed files with 103 additions and 142 deletions
--- a/desktop/static/launcher.ts
+++ b/desktop/static/launcher.ts
@@ -0,0 +1,99 @@
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ *
+ * @format
+ */
+
+import os from 'os';
+import fs from 'fs';
+import path from 'path';
+import {promisify} from 'util';
+import {spawn} from 'child_process';
+import xdg from 'xdg-basedir';
+import mkdirp from 'mkdirp';
+
+const isProduction = () =>
+  !/node_modules[\\/]electron[\\/]/.test(process.execPath);
+
+const isLauncherInstalled = () => {
+  if (os.type() == 'Darwin') {
+    const receipt = 'com.facebook.flipper.launcher';
+    const plistLocation = '/Applications/Flipper.app/Contents/Info.plist';
+    return (
+      fs.existsSync(plistLocation) &&
+      fs.readFileSync(plistLocation).indexOf(receipt) > 0
+    );
+  }
+
+  return false;
+};
+
+const startLauncher = (argv: {file?: string; url?: string}) => {
+  const args = [];
+  if (argv.file) {
+    args.push('--file', argv.file);
+  }
+  if (argv.url) {
+    args.push('--url', argv.url);
+  }
+  if (os.type() == 'Darwin') {
+    spawn('open', ['/Applications/Flipper.app', '--args'].concat(args));
+  }
+};
+
+const checkIsCycle = async () => {
+  const dir = path.join(xdg.cache!, 'flipper');
+  const filePath = path.join(dir, 'last-launcher-run');
+  // This isn't monotonically increasing, so there's a change we get time drift
+  // between the checks, but the worst case here is that we do two roundtrips
+  // before this check works.
+  const rightNow = Date.now();
+
+  let backThen;
+  try {
+    backThen = parseInt(
+      (await promisify(fs.readFile)(filePath)).toString(),
+      10,
+    );
+  } catch (e) {
+    backThen = 0;
+  }
+
+  const delta = rightNow - backThen;
+  await mkdirp(dir);
+  await promisify(fs.writeFile)(filePath, rightNow);
+
+  // If the last startup was less than 5s ago, something's not okay.
+  return Math.abs(delta) < 5000;
+};
+
+/**
+ * Runs the launcher if required and returns a boolean based on whether
+ * it has. You should shut down this instance of the app in that case.
+ */
+export default async function delegateToLauncher(argv: {
+  launcher: boolean;
+  file?: string;
+  url?: string;
+}) {
+  if (argv.launcher && isProduction() && isLauncherInstalled()) {
+    if (await checkIsCycle()) {
+      console.error(
+        'Launcher cycle detected. Not delegating even though I usually would.',
+      );
+      return false;
+    }
+
+    console.warn('Delegating to Flipper Launcher ...');
+    console.warn(
+      `You can disable this behavior by passing '--no-launcher' at startup.`,
+    );
+    startLauncher(argv);
+    return true;
+  }
+
+  return false;
+}