Microservices Expo Authors: Liz McMillan, Pat Romanski, Elizabeth White, Derek Weeks, David Sprott

Related Topics: Java IoT, Microservices Expo, IBM Cloud, IoT User Interface, Apache

Java IoT: Article

Enterprise Framework Service for WebSphere Datapower

Minimize the exposure of ports and their configuration on firewall

Create Enterprise Framework Service:
Perform the following steps to create an Enterprise Framework Service, called EnterpriseFrameworkServiceMPGW, in Datapower.
1-    Create two loopback Services using XML Firewall:
1.a.    ServiceA
1.b.    serviceB

2-    Create the following 3 files
2.a.    Create EnvironmentConfig.xml. This file contains the environment value, so the incoming request is assign to right backend.

2.b.    Create EnvironmentConfig.xslt. This XSLT file read value from the EnvironmentConfig.xml and set the environment variable.

<?xml version="1.0" encoding="UTF-8"?>

<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform"




exclude-result-prefixes="xalan dp"


<xsl:template match="/">

<xsl:variable name="masterConfig" select="document('local:///EnvironmentConfig.xml')"/>

<dp:set-variable name="'var://context/wp/environment'" value="normalize-space($masterConfig/config/environment/text())"/>




2.c.    Create EnterpriseFrameworkRouter.xslt. This XSLT file constructs the backend URL by preserving the incoming URI and reading the target host
information from the config.xml of that service.

<?xml version="1.0" encoding="ISO-8859-1"?>

<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform"


extension-element-prefixes="dp" exclude-result-prefixes="dp">

<xsl:template match="/">

<xsl:copy-of select="."/>

<xsl:variable name="incomingURI">

<xsl:value-of select="dp:variable('var://service/URI')"/>


<xsl:variable name="tempVar">

<xsl:value-of select="substring-after($incomingURI,'/')"/>


<xsl:variable name="serviceName">

<xsl:if test="contains($tempVar,'/')">

<xsl:value-of select="substring-before($tempVar,'/')"/>


<xsl:if test="not(contains($tempVar,'/'))">

<xsl:value-of select="$tempVar"/>



<xsl:param name="hostAddr" select="'local:///'"/>

<xsl:variable name="remoteURL" select="concat($hostAddr,'/xml/',$serviceName,'/config.xml')"/>

<xsl:variable name="environment" select="dp:variable('var://context/wp/environment')"/>

<xsl:variable name="config" select="document($remoteURL)" />

<xsl:variable name="serviceDestination">

<xsl:copy-of select="$config/EnterpriseFrameworkDestinationList/serviceDestination[@environment=$environment]"/>


<dp:set-variable name="'var://service/routing-url'" value="concat($serviceDestination,$incomingURI)"/>





3-    Upload these files to Datapower
3.a.    Create “xslt” folder and upload both xslt files there
3.b.    Upload “EnvironmentConfig.xml” to “local:///


4-    Create a Multi-Protocol Gateway (MPGW) named,  EnterpriseFrameworkMPGW with:
4.a.    Dynamic backend
4.b.    Request and Response type to Non-xml


5-    Create a front side handler, name it EnterpriseFrameworkFSH and assign port number to “81


6-    Create a new policy, EnterpriseFrameworkPolicy, and add following rules:
6.a.    Create a new rule for “Client to Server” and with two Transform actions
6.a.i.    Assign EnvironmentConfig.xslt to the first Transform action, make sure the Output set to NULL


6.a.ii.    Assign EnterpriseFrameworkRouter.xslt to the second Transform action, make sure Output set to NULL


6.b.    Create a new rule for “Server to Client” without any actions
6.c.    Overall EnterpriseFrameworkPolicy should look like this:

6.d.    Apply the Policy and close the window

7-    The EnterpriseFrameworkMPGW should look like this:  Save the configuration.


Integrate the Existing or New Services to the Enterprise Framework:

In order to incorporate the existing or new service in to the Enterprise Framework
1-    Create folder with the name of the service as a folder name under local:///xml/


2-    Create the following config.xml for serviceA
2.a.    The config.xml file for serviceA, which contains the IP address or hostname for each environment and  the port where serviceA is running

<?xml version="1.0" encoding="UTF-8"?>


<serviceDestination environment="DEV"></serviceDestination>

<serviceDestination environment="QA"></serviceDestination>

<serviceDestination environment="PROD"></serviceDestination>




3-    Upload the config.xml file at “local:///xml/serviceA” folder


4-    Create the similar config.xml for serviceB with serviceB’s hosts for each environment and assigned port

<?xml version="1.0" encoding="UTF-8"?>


<serviceDestination environment="DEV"></serviceDestination>

<serviceDestination environment="QA"></serviceDestination>

<serviceDestination environment="PROD"></serviceDestination>



5-    Upload the config.xml file at local:///xml/serviceB folder

6-    Every time a new service need to be integrated to Enterprise Framework, a config file need to be created for that service with values
of hostname/IP address and the port number where the service is installed. Nothing needs to be done on the EnterpriseFrameworkMPGW at all.

7-    For every incoming request EnterpriseFrameworkRouter.xslt (installed in the EnterpriseFrameworkMPGW) parse the URI and look for the
config.xml file for that service. If the service is not installed then there will be no xml/config file for that service.

Testing / Verification:

1-    Enabled the probes on serviceAFW and serviceBFW
2-    From the SOAP UI send the following test message for serviceA (http://<hostname>:81/serviceA)

3-    You should see the response back

4-    From the serviceA probe.  Notice the values of inbound-url and outbound-url.

5-    Now, send the request for serviceB  (http://<hostname>:81/serviceB)

6-    From the serviceB probe.  Notice the values of inbound-url and outbound-url.

7-    From the EnterpriseFrameworkMPGW Probe, you can see the requests are directed to their respective services. Notice the values of inbound-url and outbound-url.

By implementing the Enterprise Framework Service to any WebSphere Datapower environment, it helps to streamline the development of
new services inside Datapower.  Datapower administrators do not need to deal with firewall and network configuration whenever a new
service is implemented on its appliances.  The framework also does not allow exposing any additional ports outside the network.

More Stories By Asim Saddal

Asim Saddal works in the Middleware (WebSphere Application Server, WebSphere Datapower, WebSphere Process Server, WebSphere VE) practice of IBM Software Services for WebSphere.

@MicroservicesExpo Stories
As the world moves toward more DevOps and Microservices, application deployment to the cloud ought to become a lot simpler. The Microservices architecture, which is the basis of many new age distributed systems such as OpenStack, NetFlix and so on, is at the heart of Cloud Foundry - a complete developer-oriented Platform as a Service (PaaS) that is IaaS agnostic and supports vCloud, OpenStack and AWS. Serverless computing is revolutionizing computing. In his session at 19th Cloud Expo, Raghav...
So you think you are a DevOps warrior, huh? Put your money (not really, it’s free) where your metrics are and prove it by taking The Ultimate DevOps Geek Quiz Challenge, sponsored by DevOps Summit. Battle through the set of tough questions created by industry thought leaders to earn your bragging rights and win some cool prizes.
SYS-CON Events announced today that Isomorphic Software will exhibit at DevOps Summit at 19th International Cloud Expo, which will take place on November 1–3, 2016, at the Santa Clara Convention Center in Santa Clara, CA. Isomorphic Software provides the SmartClient HTML5/AJAX platform, the most advanced technology for building rich, cutting-edge enterprise web applications for desktop and mobile. SmartClient combines the productivity and performance of traditional desktop software with the simp...
SYS-CON Events announced today that LeaseWeb USA, a cloud Infrastructure-as-a-Service (IaaS) provider, will exhibit at the 19th International Cloud Expo, which will take place on November 1–3, 2016, at the Santa Clara Convention Center in Santa Clara, CA. LeaseWeb is one of the world's largest hosting brands. The company helps customers define, develop and deploy IT infrastructure tailored to their exact business needs, by combining various kinds cloud solutions.
Join Impiger for their featured webinar: ‘Cloud Computing: A Roadmap to Modern Software Delivery’ on November 10, 2016, at 12:00 pm CST. Very few companies have not experienced some impact to their IT delivery due to the evolution of cloud computing. This webinar is not about deciding whether you should entertain moving some or all of your IT to the cloud, but rather, a detailed look under the hood to help IT professionals understand how cloud adoption has evolved and what trends will impact th...
“Being able to take needless work out of the system is more important than being able to put more work into the system.” This is one of my favorite quotes from Gene Kim’s book, The Phoenix Project, and it plays directly into why we're announcing the DevOps Express initiative today. Tracing the Steps. For years now, I have witnessed needless work being performed across the DevOps industry. No, not within our clients DevOps and continuous delivery practices. I have seen it in the buyer’s journe...
In his general session at 19th Cloud Expo, Manish Dixit, VP of Product and Engineering at Dice, will discuss how Dice leverages data insights and tools to help both tech professionals and recruiters better understand how skills relate to each other and which skills are in high demand using interactive visualizations and salary indicator tools to maximize earning potential. Manish Dixit is VP of Product and Engineering at Dice. As the leader of the Product, Engineering and Data Sciences team a...
Analysis of 25,000 applications reveals 6.8% of packages/components used included known defects. Organizations standardizing on components between 2 - 3 years of age can decrease defect rates substantially. Open source and third-party packages/components live at the heart of high velocity software development organizations. Today, an average of 106 packages/components comprise 80 - 90% of a modern application, yet few organizations have visibility into what components are used where.
SYS-CON Events announced today that Transparent Cloud Computing (T-Cloud) Consortium will exhibit at the 19th International Cloud Expo®, which will take place on November 1–3, 2016, at the Santa Clara Convention Center in Santa Clara, CA. The Transparent Cloud Computing Consortium (T-Cloud Consortium) will conduct research activities into changes in the computing model as a result of collaboration between "device" and "cloud" and the creation of new value and markets through organic data proces...
SYS-CON Events announced today that Enzu will exhibit at the 19th International Cloud Expo, which will take place on November 1–3, 2016, at the Santa Clara Convention Center in Santa Clara, CA. Enzu’s mission is to be the leading provider of enterprise cloud solutions worldwide. Enzu enables online businesses to use its IT infrastructure to their competitive advantage. By offering a suite of proven hosting and management services, Enzu wants companies to focus on the core of their online busine...
In many organizations governance is still practiced by phase or stage gate peer review, and Agile projects are forced to accommodate, which leads to WaterScrumFall or worse. But governance criteria and policies are often very weak anyway, out of date or non-existent. Consequently governance is frequently a matter of opinion and experience, highly dependent upon the experience of individual reviewers. As we all know, a basic principle of Agile methods is delegation of responsibility, and ideally ...
In his session at 19th Cloud Expo, Claude Remillard, Principal Program Manager in Developer Division at Microsoft, will contrast how his team used config as code and immutable patterns for continuous delivery of microservices and apps to the cloud. He will show the immutable patterns helps developers do away with most of the complexity of config as code-enabling scenarios such as rollback, zero downtime upgrades with far greater simplicity. He will also have live demos of building immutable pipe...
If you are within a stones throw of the DevOps marketplace you have undoubtably noticed the growing trend in Microservices. Whether you have been staying up to date with the latest articles and blogs or you just read the definition for the first time, these 5 Microservices Resources You Need In Your Life will guide you through the ins and outs of Microservices in today’s world.
As we enter the final week before the 19th International Cloud Expo | @ThingsExpo in Santa Clara, CA, it's time for me to reflect on six big topics that will be important during the show. Hybrid Cloud This general-purpose term seems to provide a comfort zone for many enterprise IT managers. It sounds reassuring to be able to work with one of the major public-cloud providers like AWS or Microsoft Azure while still maintaining an on-site presence.
In his general session at 18th Cloud Expo, Lee Atchison, Principal Cloud Architect and Advocate at New Relic, discussed cloud as a ‘better data center’ and how it adds new capacity (faster) and improves application availability (redundancy). The cloud is a ‘Dynamic Tool for Dynamic Apps’ and resource allocation is an integral part of your application architecture, so use only the resources you need and allocate /de-allocate resources on the fly.
For those unfamiliar, as a developer working in marketing for an infrastructure automation company, I have tried to clarify the different versions of DevOps by capitalizing the part that benefits in a given DevOps scenario. In this case we’re talking about operations improvements. While devs – particularly those involved in automation or DevOps will find it interesting, it really talks to growing issues Operations are finding. The problem is right in front of us, we’re confronting it every day,...
DevOps is being widely accepted (if not fully adopted) as essential in enterprise IT. But as Enterprise DevOps gains maturity, expands scope, and increases velocity, the need for data-driven decisions across teams becomes more acute. DevOps teams in any modern business must wrangle the ‘digital exhaust’ from the delivery toolchain, "pervasive" and "cognitive" computing, APIs and services, mobile devices and applications, the Internet of Things, and now even blockchain. In this power panel at @...
SYS-CON Events announced today that SoftNet Solutions will exhibit at the 19th International Cloud Expo, which will take place on November 1–3, 2016, at the Santa Clara Convention Center in Santa Clara, CA. SoftNet Solutions specializes in Enterprise Solutions for Hadoop and Big Data. It offers customers the most open, robust, and value-conscious portfolio of solutions, services, and tools for the shortest route to success with Big Data. The unique differentiator is the ability to architect and ...
The general concepts of DevOps have played a central role advancing the modern software delivery industry. With the library of DevOps best practices, tips and guides expanding quickly, it can be difficult to track down the best and most accurate resources and information. In order to help the software development community, and to further our own learning, we reached out to leading industry analysts and asked them about an increasingly popular tenet of a DevOps transformation: collaboration.
Application transformation and DevOps practices are two sides of the same coin. Enterprises that want to capture value faster, need to deliver value faster – time value of money principle. To do that enterprises need to build cloud-native apps as microservices by empowering teams to build, ship, and run in production. In his session at @DevOpsSummit at 19th Cloud Expo, Neil Gehani, senior product manager at HPE, will discuss what every business should plan for how to structure their teams to d...