Building Lightweight Serverless Extensions in the SAP Ecosystem
SAP Kyma is a cloud-native platform that empowers developers to extend and integrate SAP solutions using microservices and serverless functions. Among its key capabilities is the ability to create and deploy serverless functions, enabling rapid development of lightweight, event-driven applications that respond to business events without managing complex infrastructure.
This article guides you through the process of creating and deploying functions in SAP Kyma, highlighting the tools and best practices that help you build scalable, maintainable extensions within the SAP ecosystem.
In SAP Kyma, functions are small, single-purpose pieces of code that run in response to events or HTTP requests. Powered by Knative, Kyma’s serverless framework, these functions scale automatically and provide an efficient way to implement business logic without the overhead of managing full microservices.
Functions in Kyma can be written in various programming languages, including JavaScript (Node.js), Python, and Go, giving developers flexibility in choosing the best tool for their needs.
Before creating functions, ensure you have:
You can create a function either via the Kyma Console (web UI) or using the Kyma CLI.
Using Kyma CLI:
kyma alpha function create hello-world
This command creates a new function named hello-world in your current namespace.
Navigate to the function folder and open the handler.js (for JavaScript) or equivalent file.
Example of a simple Node.js function handling HTTP requests:
module.exports = {
main: async function (event, context) {
return {
statusCode: 200,
body: "Hello from SAP Kyma Function!"
};
}
};
Functions can also process event payloads, connect to APIs, or perform complex logic as needed.
Deploy your function to the Kyma runtime using:
kyma alpha function deploy hello-world
Alternatively, from the Kyma Console UI, you can upload your code or edit inline and deploy with a click.
Functions can be triggered by events or exposed via HTTP endpoints.
Example HTTP trigger:
https://<kyma-gateway>/hello-world
You can invoke this endpoint to execute your function.
Use Kyma Console or CLI to:
kyma alpha function run for local function testing.Imagine a scenario where a company wants to send real-time notifications whenever a new sales order is created in SAP S/4HANA.
Using SAP Kyma functions, this integration can be developed quickly, deployed seamlessly, and scaled automatically without infrastructure overhead.
Creating and deploying functions in SAP Kyma provides a powerful, efficient way to build serverless extensions and event-driven applications within the SAP ecosystem. By leveraging Kyma’s serverless capabilities, developers can focus on business logic, accelerate innovation, and integrate seamlessly with SAP solutions.
Whether you are extending SAP S/4HANA, integrating third-party services, or automating workflows, mastering functions in SAP Kyma is a crucial skill for modern SAP developers.