Hello everyone, I'm convinced this situation already happened to some of you, so I'm here to request your help. I'm trying to access some of Google's API and the call must be authenticated with an OAuth token which I get in exchange for my private key. I have the private key in both JSON and P12 files. I'm not a Java developer and now I'm unsure on how to proceed.

I understand that Google provides API client libraries to get OAuth tokens for a number of languages, including Java, but I don't know how to add it to Pentaho Data Integration. I tried searching the forum and did some Google searches but I was unable to find a guide to implement this solution.

Can someone at least point me to the right direction? I have programming experience with JavaScript and PHP, but zero knowledge on Java.