Summary: Background for this diff: https://fb.quip.com/KqEfAlKYlgme Some plugins don't respect that stuff (livefeed and graphql), but for others it seems to work fine. This is just a PoC, there are some present bugs concerning the combination of selecting and bg plugins Questions to investigate: - [x] make sure that LiveFeed and GraphQL disconnect properly. There might be more plugins that need that - [x] verifiy that we don't loose one of the original goals of background plugins, e.g. QPL collecting and sending data from device start. Does this still work as intended after this change? - [x] how can we observe / measure improvements? Are dev builds more responsive after this? Is the layout inspector smoother for example because no QPL plugins are interweaved? - [x] how is forward and backward compatibility? - If Flipper is updated, but device not: No change I think, as getBackgroundPlugins() will return an empty set, and background plugins are initiated as usual, so old behavior - If device is updated, but Flipper not, background plugins won't be started until they are selected. This is a degradation, but hopefully explainable. - [x] Verify QPL buffer is not unbounded - [x] Share architecutre changes with team For Graphql updates: D20943455 Added runtime stats to monitor network traffic (sadly had to redo that since scuba couldn't handle the data format used at first, so probably will hold of landing this diff a week to make sure we can see some effects) Follow up work: [x] wait until we released the stat tracking before we release this, to be able to measure the effect? [x] make sure graphql fix lands [ ] use side effects abstraction [ ] fix other background plugins (android only) or fix it in a generic way: {F234394286} Changelog: Background plugins will no longer receive a Flipper connection if they are disabled. This should significantly reduce the overall load of Flipper both on the device and desktop when unused plugins are disabled used, which could otherwise generate 10MB/s of network traffic certain scenarios. All plugins *should* be able to handle to this gracefully, but since this is quite a fundamental change, reach out to the Flipper team when in doubt! Reviewed By: jknoxville Differential Revision: D20942453 fbshipit-source-id: b699199cb95c1b3e4c36e026b6dfaee7d1652e1f
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 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.
