Firefox Health Report (FHR) is obsolete and no longer ships with Firefox. This documentation will live here for a few more cycles.
Firefox Health Report is a background service that collects application
metrics and periodically submits them to a central server. The core
parts of the service are implemented in this directory. However, the
actual XPCOM service is implemented in the
data_reporting_service.
The core types can actually be instantiated multiple times and used to power multiple data submission services within a single Gecko application. In other words, everything in this directory is effectively a reusable library. However, the terminology and some of the features are very specific to what the Firefox Health Report feature requires.
.. toctree:: :maxdepth: 1 architecture dataformat identifiers
Because Firefox Health Report collects and submits data to remote servers and is an opt-out feature, there are legal and privacy concerns over what data may be collected and submitted. Additions or changes to submitted data should be signed off by responsible parties.