Apache Nifi: use OAuth 2.0 to Access Google Analytics APIs

Question

I try to use OAuth 2.0 to Access Google APIs (Google Analytics API v4) in Apache Nifi. I using Service Account basing on this document: https://developers.google.com/identity/protocols/OAuth2ServiceAccount

There is one specific moment if using OAuth 2.0 for Service Account (Google API): These service-account scenarios require creating and cryptographically signing JSON Web Tokens (JWTs). The best example of OAuth access will be using NiFi + JWT:

1. Create a JWT
2. Request an access token from the Google OAuth 2.0 Authorization Server
3. Handle the JSON response from Authorization Server

Point 1 (about JWT) is most interesting.

Are there any examples of already implemented flows exactly For Google Analytics?

Thanks

Answer 1

I don't know of any specifically for Google Analytics, but there are plenty of examples of OAuth 1.0/2.0 access using Apache NiFi. In general, you will use the InvokeHTTP processor to perform GET/POST/etc. HTTP operations against the remote endpoint.

Without specifying an issue you are encountering, I would suggest you read these articles:

• HCC: Using GetHTTP for Salesforce Integration with OAuth2.0 authentication parameter
• OAuth 1.0A with Apache NiFi (Twitter API example)
• How to set Twitter OAuth attributes to InvokeHttp processor for fetching twitter user profiles
• NiFi OAuth 2.0 Template
• Google Vision & Apache NiFi - Making Advanced Computer Vision Feasible