Invoking FunctionGraph Functions¶

Following pages demonstrate how to call a FunctionGraph implemented in Python:

For details on function invocation, see

Function Invocation

in FunctionGraph API reference.

Prerequisites¶

Environment Variables¶

Following environment variables need to be set:

Environment Variables¶
Name	Description
OTC_SDK_PROJECTID	Project ID
OTC_SDK_REGION	Region, e.g. “eu-de”
OTC_SDK_AK	Access Key (*)
OTC_SDK_SK	Secret Key
OTC_USER_NAME	User name (*)
OTC_USER_PASSWORD	User password
OTC_DOMAIN_NAME	Domain name
OTC_IAM_ENDPOINT	IAM Endpoint, e.g. https://iam.eu-de.otc.t-systems.com/v3

(* User needs to have permission to invoke FunctionGraph)

Deployed FunctionGraph Event Function¶

Use following settings to create the FunctionGraph event function using the FunctionGraph console:

Project : as specified in the environment variable OTC_SDK_PROJECTID
Region: as specified in the environment variable OTC_SDK_REGION
Name: python-sample-invoke-function
Runtime: Python 3.10
Version: latest
Application: default

Function code: Use the following sample code for the function code.

samples-doc/invoke-fg/src-fg/index.py¶

# -*- coding:utf-8 -*-
import json
def handler (event, context):
    return {
        "statusCode": 200,
        "isBase64Encoded": False,
        "body": json.dumps(event),
        "headers": {
            "Content-Type": "application/json"
        }
    }

Handler name: index.handler

Permissions¶

Make sure that your user has the necessary permissions to invoke the function.

last updated: 2026-09-30 08:01:05 UTC - commit: 9655e588c27eff2dd2f5891bc87fe541f6458b7d