# npm

The vue plugins we use to create our app are - besides vue - based on the following packages. If you use the vue plugin you do not need to install them manually.

# scp-cf-destination

A package to be used as express middleware to make a connection to the connectivity service of the Cloud Foundry SAP Cloud Platform (SCP) with the on-premise SAP backend system. The destination service is being used to retrieve the virtual host
Axios is used as an easy-to-use http client which can be used in other routes with: req.axios

# Documentation

$ npm install --save scp-cf-destination

# Usage

Before your own api routes insert the middleware route.use(scp-cf-destination) This ensures that:

• the virtual host is being retrieved (in axios this will be the baseUrl)
• an oauth request is made to the connectivity service
• an access token is being returned
• global defaults are being set for axios

There are two ways to make basic settings for the destination service :

• In your app you set the env variable SAP_SCC_BACKEND_DESTINATION: 'mycompany_sap_dev' in the manifest.yml file.
  
• set the env manually and restage your app

# Example

For testing this scenario go to SICF:

• make sure the sap/bc/ping service is activated
• in Logon Data add a service user and password if principal propagation is not set up

const sccConnector = require("scp-cf-destination");

router.use(sccConnector);

router.get("/ping", function(req, res) {
    req.axios.get( '/sap/bc/ping' )
      .then(response => {
         res.send(response.data);
        })
      .catch(error => {
         console.log(error);
      });  
});