Create function

This document explains how to create a function on the Quapp Functions.

How to create

Step 1: Click on the “Function” icon from sidebar

Step 2: Click “CREATE FUNCTION” button

Step 3: Enter the required information

1. Function name

Validation:

• Unvalidated characters of OpenFaas (a-z, 0-9, “-”, no space, 2 or more characters) → Invalid function name

• Enter an existing function name → Function "function name" is duplicated. Please try another name

• Do not enter function name → Please input function name

  

2. Template

Validation:

• Required to choose the template as "Qiskit" or "Braket", ...

• An error message will appear if the template is not selected

  

3. Function codes

• Only appear after selecting the template

• You can update the function codes or keep the template and proceed to step 4

• The handler.py file contains business logics.

  • processing(invocation_input) is the method that defines the quantum circuit
    • invocation_input is the input when invoke function
  • post_processing(job_result) is the method defines the handler job after run circuit
    • job_result is the output after run job in quantum machine

• The requirements.txt file contains the libraries that need to be installed

Step 4: Click “Deploy” button

• The screen automatically returns to the Functions screen
• The latest function created will be at the top

Result after deploying function

After pressing “Deploy” at the function creation screen, the system will automatically return the page to the list of functions that have been created.

This screen will contain the following information:

• Status

  Active: Function has been deployed successfully

  Not available: Function deployed failed

  Deploying: Function is being deployed

• Name: Name of function

• Type: Template type selected at function creation screen

• Last Deployed: The last date and time function was deployed

• Updated By: The last person deployed the function