How-to Connect your HANA Cloud Platform Mobile Service Account to your On-Premise OData Service

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How-to Connect your HANA Cloud Platform Mobile Service Account to your On-Premise OData Service How-to

Provided by SAP’s Technology RIG

How-to Connect your HANA Cloud Platform Mobile Service Account to your On-Premise OData Service Applicable Releases: HANA Cloud Connector 2.x HANA Cloud Platform Mobile Services Version 1.0 - April 2015

Document History

Document Version Authored By Description

1.0 Technology RIG First release of this guide

TABLE OF CONTENTS

1. Scenario .......................................................................................................................................... 4

2. Background ..................................................................................................................................... 4

3. Prerequisites for the Exercise ........................................................................................................... 5

4. Step-by-Step Procedure ................................................................................................................... 6 4.1 Installing the HANA Cloud Connector on Windows ............................................................................. 6 4.2 Initial configuration of the HANA Cloud Connector ............................................................................ 8 4.3 Configure backend connections in the HANA Cloud Connector ........................................................ 10 4.4 Connecting remote systems in the Hana Cloud Platform ................................................................. 13 4.5 Creating Initial Application Definition in HCPms ............................................................................... 15 4.6 Creating a Backend Configuration in HCPms .................................................................................... 17 4.7 Creating a Device Registration .......................................................................................................... 20 4.8 Executing the OData service from REST client .................................................................................. 23

1. SCENARIO

In this document we will go through the process of connecting your HANA Cloud Platform Mobile Services (HCPms) account to the OData services in your on premise network. We will install the SAP HANA Cloud connector (HCC) which is an on premise agent that runs in your network and takes care of securely connecting cloud applications, running on SAP HANA Cloud Platform (HCP), with OData services in your network. After the installation, we will go step by step though the basic configuration in HCP, HCPms and the HCC. Finally we will test the connectivity through HCPms through the HCC all the way to your backend system by creating an application registration in the HCPms and then requesting the OData service document. 2. BACKGROUND

You have an HCPms account for managing mobile applications in an on-demand environment. Your application data resides in your on premise network. You want to securely connect your on-demand applications with your on premise data.

The SAP HANA Cloud Platform is the in-memory Platform-as-a-Service offering from SAP, which enables customers and developers to build, extend, and run applications on SAP HANA in the cloud. With flexible subscription models and optional services for apps, database, and infrastructure, it provides instant access to the full power of SAP HANA.

This is the landscape model for the HCP connecting to your backend systems. We will be installing, configuring and/or testing all the gold colored boxes in this picture

3. PREREQUISITES FOR THE EXERCISE

You need a valid mobile services account on the HANA Cloud Platform. If you don’t have an account, you can get a trial account at https://account.hanatrial.ondemand.com. :

Be sure to have your Internet browser up to date and use Google Chrome if possible

Hardware prerequisites, for installing the HANA Cloud Connector physical or virtual machine:

Memory: minimum 1 GB RAM, 4 GB recommended Hard disk space: minimum 1 GB, recommended 20 GB CPU: minimum single core 3 GHz, dual core 2 GHz recommended\

Operating System requirements:

OData service Provider:

On your network you will have to have a SAP Gateway system or some other way to expose OData services to the HCPms.

REST Client for testing:

You need to have a tool for making REST calls like the Postman Client in Google Chrome applications. To get the Postman client go to the Chrome store at https://chrome.google.com/webstore/category/apps?utm_source=chrome-ntp-icon and search for the postman rest client

4. STEP-BY-STEP PROCEDURE

This is the overall sequence of steps in the Exercise:

1. Installing the HANA Cloud Connector on Windows 2. Initial configuration of the HANA Cloud Connector 3. Configure backend connections in the HANA Cloud Connector 4. Connecting remote systems in the Hana Cloud Platform 5. Creating Initial Application Definition 6. Creating a Backend Configuration 7. Creating a Device Registration 8. Executing the OData service from REST client

4.1 Installing the HANA Cloud Connector on Windows ...

The cloud connector can run on Linux, Windows or the Mac OS operating systems. For this exercise we are going to install the Windows OS version. The configuration steps below that are the same no matter which platform you decide to install the Cloud Connector. If you choose to install on one of the other platforms, follow the installation instructions and then continue with step 4.2 of this document

Choose the menu option Fil e -> New -> Pr ojec t

1. Download the Windows .msi HANA Cloud connector file from the link https://tools.hana.ondemand.com/#cloud

2. Put the installation file on the server were it is to be installed and execute the .msi file to start the installer wizard

3. Once the wizard starts, click the Next button to start the installation process.

4. Specify the path where you want the software installed. You can leave the default path or change it as you like

5. Specify the secure port to use for the Cloud Connector. The default port is 8443. If have other things running on the 8443 port, you may need to change the port.

6. Leave the box checked so the system will automatically start the cloud connector

7. Confirm the start of the installation by clicking the Next button

4.2 Initial configuration of the HANA Cloud Connector

1. Open browser and go to the link https:// <server name>:<secure port> (e.g. https://localhost:8443 if you are on the same machine)

2. If you get the following error, click on Advanced. This error comes because you don’t have yet any valid certificate for this localhost server

3. Click on Proceed to localhost (unsafe)

4. Enter these credentials and click on Login

5. Choose Master as the installation type since this is your first time you are installing the product and this is the only SAP HANA Cloud Connector in your system. Click on Apply

6. The first time you log in, you need to change the password. Change it to whatever you like and then click on Save

7. Connect to your Hana Cloud Platform account. Provide the following initial configuration and click on Apply. Proxy information is only needed if you are in a network that requires a proxy to communicate to the internet, like for example the inside your corporate network.

Parameter Value

Landscape Host hanatrial.ondemand.com

Account Name <your account name on the landscape host>. It can be found on the top left corner of your SAP HANA Cloud Cockpit. Usually it is your S# or I# followed by the word trial (e,g S000000trial, I000000trial)

User Name Password

Administrator manage

User Name <your user name on the landscape host> (for the trial account it is your SCN Use-id)

Password <your password> (for the trial account it is your SCN password)

HTTPS Proxy Host only if required

HTTPS Proxy Port only if required (

4.3 Configure backend connections in the HANA Cloud Connector

1. The connector is configured and connected to the Hana Cloud Platform. Now we need to add some connections with the backend systems. Click on Access Control

2. Click on Add… in the Mapping Virtual to Internal System section

3. Enter the following information and click on Save. What you are doing in this step is to assign to a real backend system a virtual name. In this way you can decouple the cloud based application from the backend infrastructure. You can also create a virtual port, which of course can be different from the real one

Parameter Description

Virtual Host <whatever you want to call it> (e.g myvirtualhost)

Virtual Port 4321 (It does not have to be the same as the actual port.)

Internal Host <host name for your OData service provider>

Internal Port <port for OData service provider>

Protocol HTTP

Principal Type kerberos

Back-end Type SAP Gateway

Example settings:

4. Now you need to add all the resources related to the usages you want to have available to your application. These resources are the paths to be concatenated with the server URL in order to have the complete paths to the resources.

Highlight the server entry you just made. In the resources area below click on the Add button

5. Add the resource and click on Save

Parameter Value

URL Path <path to your OData service> (e.g. /sap/opu/odata)

Access Policy Path and all sub-paths

6. At the end you should have something that looks like this configuration

7. Completing the back end configuration your SAP HANA Cloud connector has been properly configured if the status is green and it’s connected

8. You have successfully installed and configured your SAP HANA Cloud Connector.

4.4 Connecting remote systems in the Hana Cloud Platform ...

Now that your SAP HANA Cloud Connector is configured with a virtual server pointing to a given real server. You now have to point to the virtual server you have created and its mappings to it all the related resources on the Hana Cloud Platform. You are going to setup, in the SAP HANA Cloud Cockpit, a new destination: this destination will give you access to the backend systems through the Cloud Connector. These are the actions to perform in order to configure this destination: Choose the menu option Fil e -> New -> Pr ojec t

1. From the HANA Cloud cockpit click on the left side on the link Destinations

2. Click on New Destination

3. Enter the following parameters and click on Save

Parameter Value

Name mygatewaysystem

Type Type of connection (e.g. http, rfc)

Description A description of the connections

URL http://myvirtualhost:8000 (The virtual URL you defined in the cloud connector)

ProxyType Internet

Cloud Connector Version 2

Authentication NoAuthentication

When finished click on Save

4. At the end you should have the following configuration:

That concludes the setup and configuration of the HANA Cloud Connector in the HANA Cloud Platform

4.5 Creating Initial Application Definition in HCPms

1. Log on to the Hana Cloud Platform mobile services (HCPms) from your HCP account by going to

Services and selecting the link Go to Service under the SAP HANA Cloud Platform Mobile Service area

2. Log on to your HCPms administration cockpit. It should look similar to the screen shot below:

3. Click on the Applications option. If this is a new installation you will have no applications listed if this is

your first time creating an application definition. If you have already defined applications, you will get a

list of the defined application in the left column and if you choose an application the basic info will be

on the right hand side of the screen

4. Press the + sign to create a new application definition

5. You will get the following popup to start the application definition. The required fields are marked with

an asterisk (*). Fill in the required fields and press the Save button when you are finished. Details of

what should be filled in the screen are provided in the following table.

Field Value

Application ID <whatever you want to call it> (e.g. com.sap.flight)

Version 1.0

Name <anything you want>

Type Native

Description (Optional)

Vendor (Optional)

Security

Configuration

None

4. Once you save your definition you will get a screen that looks something like this. You can then

continue to the next step defining the backend configuration.

4.6 Creating a Backend Configuration in HCPms

1. To complete your Application Definition, you can create the backend configuration from the

application definition screen that was shown in the previous steps by pressing on the Backend icon.

2. Fill in the in the fields on the screen and press the Save button when you are done. The table below

provides information on what goes in to each of the fields

3. You will get a delay warning saying that the connection was successfully created but it may take up to

5 minutes to be created in the HCP database and cache. So you may have to wait for a bit before you

can continue. Press the OK button to clear the message

Field Value Backend URL <the path to your OData service> Make sure you specify the virtual hose and port not

the actual host and port (e.g.http://myvirtualhost:8000/sap/opu/odata/IWFND/RMTSAMPLEFLIGHT)

Authentication Type

No Authentication

Maximum Connections

500

Certificate Alias Leave blank. Rewrite Mode Rewrite URL on HANA Mobile Server

Relative Paths Leave blank Proxy Type OnPremise

4. Click on the application name in the left hand column to bring up the application details again. Notice

your Application URL. This is the back end connection you specified using the virtual server. You can

test the connection from the HCP to you backend system by clicking on the Ping button at the bottom

of the screen

5. If you configured everything right in the cloud connector and the HCP and HCPms you should get a

successful ping

6. That completes the application configuration click the OK button to clear the pop-up and then click the

home button in the upper left corner of the screen to return to the main screen

Notice that you have an application definition created and also a connection. Any backend you create

in an application definition also get populated in the connections

4.7 Creating a Device Registration

1. To simulate a device registration you can use a REST client tool to issue a POST request to the

application URL you defined in the HCPms cockpit. For this exercise, we will use the Postman

application in the Google Chrome browser. The process will be similar for other tools. Launch the

Postman tool

2. Enter the following information and press the Send button

3. If everything was entered correctly, you should get a return code of 201 Created message in the Status

area at the bottom of the screen

Field Value URL https://hcpms-<yourtrial>.hanatrial.ondemand.com/odata/applications/latest/<your

application>/Connections Request Type POST

Header Content-Type application/atom+xml; charset=UTF-8

Form Data Raw

Type XML XML Data <?xml version='1.0' encoding='UTF-8'?>

<entry xmlns='http://www.w3.org/2005/Atom' xmlns:d='http://schemas.microsoft.com/ado/2007/08/dataservices' xmlns:m='http://schemas.microsoft.com/ado/2007/08/dataservices/metadata'> <content type='application/xml'> <m:properties> <d:DeviceType>Android</d:DeviceType> </m:properties> </content> </entry>

4. You can also confirm by logging back on to the HCPms cockpit and now you should see an additional

registration.

5. If you click on the Registrations and Users icon you can see the details

4.8 Executing the OData service from REST client

1. With a new connection to the application defined on the SMP server it is now possible to communicate

with the backend service. In this case just the service document will be retrieved using an HTTP get to

verify that indeed the gateway server is being communicated with

Go back to the Rest client and create a get request with the following information and press the Send

button

It should look something like this

2. After you press the Send button you should get a 200 Status OK and the service data returned in the

body of the message similar to below

Field Value URL https://hcpms-<yourtrial>.hanatrial.ondemand.com/<your application>/

(e.g. https://hcpms-i007387trial.hanatrial.ondemand.com/com.sap.flight/) Request Type GET

X-SMP-APPCID <The Registration ID you created in the above step>

Authorization The username and password encoded using HTTP BASIC authorization. Note: even

though we defined no authorization in the set-up, if your backend requires

authorization you will need to specify the user and password in the Rest client. You

can specify it in the tool or when you execute it the browser will prompt you for it.

3. That concludes the process of configuring and testing the HCPms and the HCC

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