Categories: Aspera

Faspex 5 Python API Setup


Aspera Faspex 5 is an API-centric platform, supporting common administrative tasks as well as intricate integrations through its comprehensive API. For workflows that don’t involve user interaction, Faspex 5 incorporates JWT (JSON Web Token) for API authentication.

This guide provides a hands-on approach to implement this authentication in Python, complete with sample code for quick API testing.

Prerequisites:
Python 3 & pip
Faspex 5.0+
Download files: authenticate.py constants.py get_health_and_users.py

JWT Authentication Flow
Generate a JWT assertion.
Sign the JWT with your private key. This key should correspond to a public key added into Faspex.
Send the JWT to the Faspex auth component to get a bearer token.
Use this bearer token for making authenticated API requests to Faspex.

Setting Up OAuth Client:

  1. Generate an RSA keypair:
    ssh-keygen -t rsa -m PEM -f [key_location]
  2. Convert the public key to PEM (this output is entered in the GUI below):
    ssh-keygen -f [key_location] -e -m pem
  3. Register a new API client in Faspex. From the Admin app within Faspex, go to “Configurations” – “API clients” and select “Create new.”
    Choose JWT grant type, set token expiry, and assign permissions.
    Either enter the public key here as a global value for selected users to use, or turn ‘Global key’ off and enter the public key in your user
    profile within Faspex.
    Select “Create” and make note of the Client ID for next steps.

Python Script Setup:
Install pyjwt and pyopenssl modules:
pip install pyjwt pyopenssl
Download the three example files to a directory along side your RSA keypair: authenticate.py constants.py get_health_and_users.py

In constants.py , fill in your Faspex server details, API client ID, and your email.
Modify the key location if needed, or use the default (jwt.key and jwt.key.pub within the working directory)
Testing Your Setup:

  1. Test authentication: python3 authenticate.py . Use –debug for error details if there are any issues (check that the constants are correct and the keys are in the right format)
  1. Modify the script to test other endpoints relevant to your workflow. Refer to the Faspex API documentation for further information:
    IBM API Hub – Faspex 5 Endpoints
    IBM Aspera Faspex Ruby JWT example
Jason Warman

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