Extract launchSimulator to IOSBridge

Summary:
This is related to `simctl` functionality, so can be extracted there.

This will aid in future changes whereby we can hide `getDeviceSetPath` in the IOSBridge module

Reviewed By: passy

Differential Revision: D33842987

fbshipit-source-id: de292ce5afba3e7d79d8ba27c2b8852909d7e6f3

desktop/flipper-server-core/src/FlipperServerImpl.tsx

@@ -11,10 +11,7 @@ import EventEmitter from 'events';
 import ServerController from './comms/ServerController';
 import {CertificateExchangeMedium} from './utils/CertificateProvider';
 import {AndroidDeviceManager} from './devices/android/androidDeviceManager';
-import {
-  IOSDeviceManager,
-  launchSimulator,
-} from './devices/ios/iOSDeviceManager';
+import {IOSDeviceManager} from './devices/ios/iOSDeviceManager';
 import metroDevice from './devices/metro/metroDeviceManager';
 import desktopDevice from './devices/desktop/desktopDeviceManager';
 import {
@@ -356,7 +353,8 @@ export class FlipperServerImpl implements FlipperServer {
       launchEmulator(this.config.settings.androidHome, name, coldBoot),
     'ios-get-simulators': async (bootedOnly) =>
       this.ios.getSimulators(bootedOnly),
-    'ios-launch-simulator': async (udid) => launchSimulator(udid),
+    'ios-launch-simulator': async (udid) =>
+      this.ios.simctlBridge.launchSimulator(udid),
     'persist-settings': async (settings) => saveSettings(settings),
     'persist-launcher-settings': async (settings) =>
       saveLauncherSettings(settings),

desktop/flipper-server-core/src/devices/ios/IOSBridge.tsx

@@ -12,7 +12,7 @@ import child_process from 'child_process';
 import {DeviceType} from 'flipper-common';
 import {v1 as uuid} from 'uuid';
 import path from 'path';
-import {exec} from 'promisify-child-process';
+import {exec, execFile} from 'promisify-child-process';
 import {getFlipperServerConfig} from '../../FlipperServerConfig';
 
 export const ERR_NO_IDB_OR_XCODE_AVAILABLE =
@@ -72,7 +72,7 @@ class IDBBridge implements IOSBridge {
   }
 }
 
-class SimctlBridge implements IOSBridge {
+export class SimctlBridge implements IOSBridge {
   startLogListener(
     udid: string,
     deviceType: DeviceType,
@@ -114,6 +114,11 @@ class SimctlBridge implements IOSBridge {
       `xcrun simctl io ${serial} recordVideo --codec=h264 --force ${outputFile}`,
     );
   }
+
+  async launchSimulator(udid: string): Promise<any> {
+    await execFile('xcrun', ['simctl', ...getDeviceSetPath(), 'boot', udid]);
+    await execFile('open', ['-a', 'simulator']);
+  }
 }
 
 async function isAvailable(idbPath: string): Promise<boolean> {
@@ -155,6 +160,12 @@ async function readScreenshotIntoBuffer(imagePath: string): Promise<Buffer> {
   return buffer;
 }
 
+export function getDeviceSetPath() {
+  return process.env.DEVICE_SET_PATH
+    ? ['--set', process.env.DEVICE_SET_PATH]
+    : [];
+}
+
 export async function makeIOSBridge(
   idbPath: string,
   isXcodeDetected: boolean,

desktop/flipper-server-core/src/devices/ios/iOSDeviceManager.tsx

@@ -18,6 +18,8 @@ import {
   ERR_NO_IDB_OR_XCODE_AVAILABLE,
   IOSBridge,
   makeIOSBridge,
+  getDeviceSetPath,
+  SimctlBridge,
 } from './IOSBridge';
 import {FlipperServerImpl} from '../../FlipperServerImpl';
 import {notNull} from '../../utils/typeUtils';
@@ -57,6 +59,7 @@ export class IOSDeviceManager {
     'PortForwardingMacApp',
   );
   iosBridge: IOSBridge | undefined;
+  simctlBridge: SimctlBridge = new SimctlBridge();
   private xcodeVersionMismatchFound = false;
   public xcodeCommandLineToolsDetected = false;
 
@@ -289,17 +292,6 @@ export class IOSDeviceManager {
   }
 }
 
-function getDeviceSetPath() {
-  return process.env.DEVICE_SET_PATH
-    ? ['--set', process.env.DEVICE_SET_PATH]
-    : [];
-}
-
-export async function launchSimulator(udid: string): Promise<any> {
-  await execFile('xcrun', ['simctl', ...getDeviceSetPath(), 'boot', udid]);
-  await execFile('open', ['-a', 'simulator']);
-}
-
 function getActiveDevices(
   idbPath: string,
   isPhysicalDeviceEnabled: boolean,