Firefox Application Services
Application Services (a-s) is collection of Rust Components that are used to enable Firefox applications to integrate with Firefox accounts, sync, experimentation, etc. Each component is built using a core of shared code written in Rust, wrapped with native language bindings for different platforms.
Get in touch with other community members on Matrix, or through issues here on GitHub.
We use rustdoc to document both the public API of the components and the various internal implementation details. View them on https://mozilla.github.io/application-services/book/rust-docs/fxa_client/index.html. Once you have completed the build steps, you can view the docs by running:
cargo doc --no-deps --document-private-items --open
Building the Rust Components
- Clone or Download the repository:
$ git clone https://github.com/mozilla/application-services # (or use the ssh link) $ cd application-services $ git submodule init $ git submodule update --recursive
- Follow these instructions to install your system-level dependencies
- Run the a-s Rust unit tests
Consumer build, integration and testing
The application-services library primary consumers are Fenix (Firefox on Android) and Firefox iOS. Assure you are able to run integration tests (for Android and iOS if using MacOS) by following the instructions to build for Android and iOS integrations.
Android integration builds and helpful tools
- Build instructions to test Fenix / android-components integration
- Fenix Auto-publication workflow for android-components and application-services
Firefox for iOS integration
- Build instructions to test Firefox Desktop integration
./components/ contains the source for each component, and its FFI bindings.
Please note that we are in the process of moving away from hand-written ffi code and instead favouring the use of the uniffi library.
- See ./components/push/ for an example, where you can find:
- See ./components/fxa-client for an example that uses uniffi to generate API wrappers for multiple languages, such as Kotlin and Swift.
List of components
- autofill - for storage and syncing of credit card and address information
- crashtest - testing-purposes (crashing the Rust code)
- fxa-client - for applications that need to sign in with FxA, access encryption keys for sync, and more.
- logins - for storage and syncing of a user's saved login credentials
- nimbus - for integrating with Mozilla's experimentation platform for Firefox
- places - for storage and syncing of a user's saved browsing history
- push - for applications to receive real-time updates via WebPush
- rc_log - for connecting component log output to the application's log stream
- support - low-level utility libraries
- sync15 - shared library for accessing data in Firefox Sync
- sync_manager - integrates multiple sync engines/ stores into a single framework
- tabs - an in-memory syncing engine for remote browser tabs
- viaduct - an HTTP request library
- webext-storage - powers an implementation of the chrome.storage.sync WebExtension API