279f3c41b7
Summary:
Changelog: [Flipper] Improve serialisation mechanism format & speed
The default serialisation mechanism used by Flipper to serialise plugin states is very flexible, taking care of maps, sets, dates etc. However, it is also really slow, leading to issues like in the related tasks, and work arounds like D17402443 (98bc01618f) to skip the whole process for plugins.
This diff changes the serialisation mechanism to have a better trade off between speed and convenience: For now we will only apply the smart serialisation for objects living at the _root_ of the serialised object, but it won't be applied recursively.
This sounds like a dangerous change, but works well in practice:
* I went through all `persistedState` and `createState` definition (the types), and the idea that complex types like Map and Set only live at the root of the persisted state holds up nicely. That makes sense as well since plugins typically store literally the same data as that they have received over the wire, except that they put it in some maps, sets etc.
* I introduced `assertSerializable` that only runs in dev/test, which will check (recursively, but without all the cloning) to see if a tree is indeed serialisable.
* The fact that by swapping this mechanism rarely existing unit test for exportData needed changes proves that the assumption that only roots are relevant generally upholds (or that plugin authors don't write enough tests ;-)).
* I verified that popular plugins still import / export correctly (actually *more* plugins are exportable now than before, thanks to sandy wrapper introduced earlier)
Reviewed By: jknoxville
Differential Revision: D29327499
fbshipit-source-id: 0ff17d9c5eb68fccfc2937b634cfa8f4f924247d
Flipper
Flipper (formerly Sonar) is a platform for debugging mobile apps on iOS and Android. Visualize, inspect, and control your apps from a simple desktop interface. Use Flipper as is or extend it using the plugin API.
Table of Contents
- Mobile development
- Extending Flipper
- Contributing to Flipper
- In this repo
- Getting started
- Building from Source
- iOS SDK + Sample App
- Android SDK + Sample app
- Documentation
- Contributing
- License
Mobile development
Flipper aims to be your number one companion for mobile app development on iOS and Android. Therefore, we provide a bunch of useful tools, including a log viewer, interactive layout inspector, and network inspector.
Extending Flipper
Flipper is built as a platform. In addition to using the tools already included, you can create your own plugins to visualize and debug data from your mobile apps. Flipper takes care of sending data back and forth, calling functions, and listening for events on the mobile app.
Contributing to Flipper
Both Flipper's desktop app and native mobile SDKs are open-source and MIT licensed. This enables you to see and understand how we are building plugins, and of course, join the community and help to improve Flipper. We are excited to see what you will build on this platform.
In this repo
This repository includes all parts of Flipper. This includes:
- Flipper's desktop app built using Electron (
/desktop) - native Flipper SDKs for iOS (
/iOS) - native Flipper SDKs for Android (
/android) - Plugins:
- Logs (
/desktop/src/device-plugins/logs) - Layout inspector (
/desktop/plugins/layout) - Network inspector (
/desktop/plugins/network) - Shared Preferences/NSUserDefaults inspector (
/desktop/plugins/shared_preferences)
- Logs (
- website and documentation (
/website//docs)
Getting started
Please refer to our Getting Started guide to set up Flipper.
Requirements
- node >= 8
- yarn >= 1.5
- iOS developer tools (for developing iOS plugins)
- Android SDK and adb
Building from Source
Desktop
Running from source
git clone https://github.com/facebook/flipper.git
cd flipper/desktop
yarn
yarn start
NOTE: If you're on Windows, you need to use Yarn 1.5.1 until this issue is resolved.
Building standalone application
Provide either --mac, --win, --linux or any combination of them
to yarn build to build a release zip file for the given platform(s). E.g.
yarn build --mac --version $buildNumber
You can find the resulting artifact in the dist/ folder.
iOS SDK + Sample App
cd iOS/Sample
rm -f Podfile.lock
pod install --repo-update
open Sample.xcworkspace
<Run app from xcode>
You can omit --repo-update to speed up the installation, but watch out as you may be building against outdated dependencies.
Android SDK + Sample app
Start up an android emulator and run the following in the project root:
./gradlew :sample:installDebug
React Native SDK + Sample app
cd react-native/ReactNativeFlipperExample
yarn
yarn android
Note that the first 2 steps need to be done only once.
Alternatively, the app can be started on iOS by running yarn ios.
Troubleshooting
Older yarn versions might show an error / hang with the message 'Waiting for the other yarn instance to finish'. If that happens, run the command yarn first separately in the directory react-native/react-native-flipper.
Documentation
Find the full documentation for this project at fbflipper.com.
Our documentation is built with Docusaurus. You can build it locally by running this:
cd website
yarn
yarn start
Contributing
See the CONTRIBUTING file for how to help out.
License
Flipper is MIT licensed, as found in the LICENSE file.