Uploading ProGuard Mapping Files to Firebase

Question

Am trying out the recently released feature that allows uploading of ProGuard mapping file to Firebase (https://firebase.google.com/docs/crash/android) using gradle task. The following is the task I'm running.

./gradlew -PFirebaseServiceAccountFilePath=xxxxx.json :app:firebaseUploadReleaseProguardMapping

However, it doesn't seem to be recognizing service account file. Has anyone had any luck getting this working? I've also tried defining FirebaseServiceAccountFilePath in gradle.properties.

* What went wrong:
Execution failed for task ':app:firebaseUploadReleaseProguardMapping'.
> Service account file path has not been defined! Service accounts are used to authorize your mapping file uploads.  Learn more at
  https://firebase.google.com/docs/crash/android.

Answer 1

Set relative path to json in gradle.properties (in project root)

FirebaseServiceAccountFilePath = /firebase-crashreporting.json

and update this property in your build.gradle

apply plugin: 'com.android.application'
apply plugin: 'com.google.firebase.firebase-crash'

android {
    ...
}

setProperty("FirebaseServiceAccountFilePath", rootProject.rootDir.absolutePath + FirebaseServiceAccountFilePath)

dependencies {
    ...
}

Answer 2

The error message is misleading. You will see that if the file path that you give for the service account wasn't found. Try passing the full, unambiguous path of the service account file (try not to depend on relative paths).

I'll make sure that the next version of the plugin has a more meaningful error message for the case where the file isn't found. Sorry about the trouble.

Answer 3

In my case I was using Jenkins to upload the proguard mappings for me. I had to change the file permissions for the json private key file from 400 to 444.