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S/4HANA Nodejs SAP Cloud SDK Example

Overview

This sample provides a Serverless Function configured to call the Material Stock API provided by S/4HANA using the SAP Cloud SDK. This function is exposed as an un-authenticated API.

This sample demonstrates how to:

  • Use the S/4HANA API.
  • Create a development Namespace in the Kyma runtime.
  • Deploy a Serverless Function and an APIRule.

Prerequisites

  • SAP BTP, Kyma runtime instance
  • kubectl configured to use the KUBECONFIG file downloaded from the Kyma runtime
  • S/4HANA System

Steps

Configure the System Connectivity

  1. Register an SAP S/4HANA Cloud System in an SAP BTP global account.
  2. Configure the Entitlements for the SAP BTP subaccount.

Deploy the Function

  1. Create a new dev Namespace:

    kubectl create namespace dev
kubectl label namespaces dev istio-injection=enabled

  2. Apply the Deployment:

    kubectl -n dev apply -f ./k8s/deployment.yaml

Provision a ServiceInstance and Binding

Within the dev Namespace:

  1. Apply the service instance and binding by running

    kubectl -n dev apply -f ./k8s/s4hana-materialstock-instance.yaml

Bind a ServiceInstance to the Function

  1. Open the s4hana-materialstock Function.

  2. Choose the buttom Add Environment Variable and choose Secret Variable.

  3. Provide the value S4_ for the name.

  4. Choose the value s4-hana-cloud-0164-binding for the secret.

  5. Choose <All Keys>.

  6. Choose Create

  7. Verify that the Function is up and running:

    kubectl -n dev get function s4hana-materialstock

Call the API

Use the APIRule:

  • https://s4hana-materialstock.{cluster-domain}/orders
  • https://s4hana-materialstock.{cluster-domain}/orders/10000001