[SAP HANA Academy] Live3: Web Services - Authentication Setup Proxy

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[Update: April 5th, 2016 -  The Live3 on HCP tutorial series was created using the SAP HANA Cloud Platform free developer trial landscape in January 2015. The HCP landscape has significantly evolved over the past year. Therefore one may encounter many issues while following along with the series using the most recent version of the free developer trail edition of HCP.]

Continuing from the previous tutorial video of the SAP HANA Academy’s Live3 on HCP course, philip.mugglestone shows how to setup the “proxy” authentication server for the HCP trail developer edition. Watch Philip's tutorial video below.

(0:20 – 3:30) Installing the Prerequisites for the hanatrail-auth-proxy File and Modifying its Code

On the hanatrail-auth-proxy page located on SAP Mentor, Gregor Wolf’s GitHub, click on the download ZIP button. Extract the downloaded zip and then open a command window on the hantrail-auth-proxy file.

First a few prerequisite node.js modules (cheerio and querystirng) must be installed. In the command window enter npm install cheerio. Wait a few seconds for the cheerio installation to be completed before entering npm install querystring.

*Note – The component has been updated since this video was recorded. Simply use “npm install” from the main hanatrail-auth-proxy folder. There is now no need to install cheerio and querstring explicitly.*

Next we need to make a few changes to the hanatrail-auth-proxy code. First right click to edit the config.js file with notepad++. First you must set a port to use. This will create a web server that is similar to the nodejs we created earlier for loading the Twitter data.

You also must insert the correct host. The host is the beginning of the services.xsodata URL. For example Philip’s host is s7hanaxs.hanatrail.ondemand.com. Leave the timeout and https as is before saving the code.

*Note – The config.js and server-basic-auth files have moved to the examples subfolder. You must still verify that the “host” option in examples/config.js matches your SAP HANA XS instance.*

(3:30 – 6:30) Running the Proxy

To start the proxy application, back in the command window enter node server-basic-auth.js. A message will appear saying the SAP HANA Cloud Platform trail proxy is running on the port host number.

Open a new web browser tab and enter localhost:portnumber/URL of application. So in Philip’s example he enters the URL displayed below.

After logging in with your HCP p number the authentication for the SAP HANA instance using SAML 2.0 should be preformed automatically. Effectively now the proxy, acting as a local web server, talks as if it’s the SAP HANA Cloud Platform trial edition. You can now make all of the calls that were demonstrated in previous videos (e.g. metadata, clusters) using the localhost URL.

Follow along with the SAP HANA Academy's Live3 on HCP course here.

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