Firebase Remote Config - Support multiple Firebase apps with individual namespaces

[asetiyadi-MLB]

Firebase Remote Config - Support multiple Firebase apps with individual namespaces

[paulb777]

Right no workaround for that. FirebaseAnalytics only works with the default app #230

[paulb777]

Sorry about the trouble here. Looking at the code in more detail, it seems that a single namespace - FIRNamespaceGoogleMobilePlatform is used for all apps.

I'll follow up with the team to clarify if this is a bug or a missing feature.

[google-oss-bot]

I couldn't figure out how to label this issue, so I've labeled it for a human to triage. Hang tight.

[paulb777]

It looks like you need to use the remoteConfig(app:) API

[asetiyadi-MLB]

@paulb777 .. I tried using this

guard let app = FirebaseApp.app() else { return }
remoteConfig = RemoteConfig.remoteConfig(app: app)

and I am still not getting the right remote config values for the intended environment (after the runtime switch)

[paulb777]

Here's an example of configuring a non-default app:

https://github.com/firebase/firebase-ios-sdk/blob/auth-swift/FirebaseAuth/Tests/SampleSwift/AuthenticationExample/AppManager.swift#L40

[asetiyadi-MLB]

@paulb777 I did some testing using the non-default implementation. Following the sample codes however I am still not getting the remoteConfig values after switching environment.

public init(plist: Plist) {
    guard let plistPath = Bundle.module.path(forResource: plist, ofType: "plist"),
          let firebaseOptions = FirebaseOptions(contentsOfFile: plistPath)
    else {
      fatalError("💥 Invalid GoogleService plist info")
    }

    FirebaseApp.configure(name: appName, options: firebaseOptions)

    guard let app = FirebaseApp.app(name: appName)
    else {
      fatalError()
    }
    
    Self.firebaseApp = app
    self.firestoreConfiguration = FirestoreConfiguration(app: app)
    Self.config = RemoteConfig.remoteConfig(app: app)
  }

The iOS app is pointing to the correct Firestore environment, only the remoteConfig is having the issue.

The other thing that I read from the remoteConfig(app:) API, this will cause FirebaseAnalytics to not working with non-default app. We use FirebaseAnalytics on our app. Is there no workaround for this?

[asetiyadi-MLB]

That is a bummer on the FirebaseAnalytics.

As for the remoteConfig itself, has it ever been proven to be working if we use remoteConfig(app:) it can support changing environment at runtime?

[paulb777]

Yes, it turns out that Remote Config manages all Firebase apps in a single namespace, so that the functionality does not work as it would be expected. Changing the behavior would be a large task and not something we can prioritize now. Also, it might break apps relying on the current behavior. I'll rename the issue and we can use it to track thumbs-up requests for proper multi-Firebase app support.

[asetiyadi-MLB]

@paulb777 Thank you for the clarification. It would be great if Firebase can support multi environments (especially for switching environment at runtime) for both Remote Config and Analytics. Sounds like this is a feature that have been requested before as well. It would be a very welcome addition.