1 Introduction
The SAP Destination Service is part of the OData Connector for SAP solutions and enables OData calls to be made using SAP destinations configured on SAP Cloud Platform. However, you can also use the destination information provided by the SAP Destination Service to make calls to non-OData services using Mendix native actions for consuming REST and SOAP.
This how-to will teach you how to configure a REST or SOAP call to use the configuration obtained from the SAP Destination Service.
2 Prerequisites
Before starting this how-to, make sure you have completed the following prerequisites:
- Have a Mendix app which can be deployed to SAP Cloud Platform
- Configured a PrincipalPropagation destination to an on-premise REST or SOAP service in your SAP Cloud Platform account; see SAP Destination Service for more information
- Imported an OData Connector for SAP solutions version higher than 4.0.0 into your app
3 Writing Your Microflow
In your microflow which is making a REST or SOAP call, perform a Get Destination action before the REST or SOAP call. This needs to use the Destination Name which is configured in a Destination on SAP Cloud Platform.
This will return a Destination object. This is named DestinationObject in the above example, and is used to configure the subsequent REST or SOAP call.
The Destination object has the properties shown in the image below:
3.1 Configuring a REST Call
3.1.1 General Tab
The following entries are required in the General tab:
| Entry | Description |
|---|---|
| Location | $DestinationObject/Url followed by any additional parameters |
| Proxy configuration | Override |
| Use proxy | true |
| Host | $DestinationObject/ProxyHost |
| Port | $DestinationObject/ProxyPort |
| Username | $DestinationObject/SapConnectivityProxyCredentials |
| Password | empty |
3.1.2 HTTP Headers Tab
The following HTTP Headers do the following: * authenticate the app to perform the action via the Connectivity service * authenticate the user to access the endpoint defined by the destination * request that data is returned in JSON format
| Key | Value |
|---|---|
| SAP-Connectivity-Authentication | $DestinationObject/SapConnectivityAuthentication |
| Proxy-Authorization | ‘Bearer ’ + $DestinationObject/SapConnectivityProxyCredentials |
| Accept | ‘application/json’ |
3.2 Configuring a SOAP Call
3.2.1 Operation Tab
The following entries are required in the Operation tab:
| Entry | Description |
|---|---|
| Override location | Checked |
| Location | $DestinationObject/Url |
| Proxy configuration | Override |
| Use proxy | true |
| Host | $DestinationObject/ProxyHost |
| Port | $DestinationObject/ProxyPort |
| Username | $DestinationObject/SapConnectivityProxyCredentials |
| Password | empty |
3.2.2 HTTP Headers Tab
The same HTTP Headers are required as for a REST call. They do the following: * authenticate the app to perform the action via the Connectivity service * authenticate the user to access the endpoint defined by the destination * request that data is returned in JSON format
| Key | Value |
|---|---|
| SAP-Connectivity-Authentication | $DestinationObject/SapConnectivityAuthentication |
| Proxy-Authorization | ‘Bearer ’ + $DestinationObject/SapConnectivityProxyCredentials |
| Accept | ‘application/json’ |
