[Firebase team member here] Our goal is to open source all of our SDKs, and we have steadily open-sourced more of them over time. The SDKs you see on GitHub right now are all standalone, they don't require communicating with Google Play services running on the device.
Our bar for moving an SDK to GitHub is that it has to be more than a source dump, it must be the source of truth for that team's development. Right now that's not possible for FCM because of the dependency it has on Google Play services.
Is there a plan to a) Support use of FCM without play services (i.e., in AOSP)? b) If not, is there any legit path forward for cases like these short of them forking AOSP ?
Even if the SDK's are open source, a lot of the problems we experience with FCM at Signal seem to be more of an issue with devices trying to optimize battery. Do you have any advice on how to avoid the system heavily delaying notifications? We've seen instances of high-priority notifications being delayed and batched together, even for users who have disabled battery optimizations.
Our bar for moving an SDK to GitHub is that it has to be more than a source dump, it must be the source of truth for that team's development. Right now that's not possible for FCM because of the dependency it has on Google Play services.