APNs Push Id to FCM Registration token converter

This small utility uses Google's https://iid.googleapis.com/iid/v1:batchImport service.
For more information see this.

It converts existing APNs Push Ids into FCM tokens for your application.

Usage

java -jar apns2fcm.jar poolSize=10 fileName=input.csv sandbox=true packageName=your.package.name serverKey=YOUR_SERVER_KEY

Where:

• poolSize is a thread pool size for batch job processing (assume, poolSize=10, it means that utility will use at most 10 connections to service),
• fileName is an input file name. This file should contain APNs tokens each in single line,
• sandbox: if it is 'true', indicates sandbox environment,
• packageName is your application package name,
• serverKey is your FCM Server API key