Welcome!

Microsoft Cloud Authors: Andreas Grabner, Stackify Blog, Liz McMillan, David H Deans, Automic Blog

Related Topics: Microsoft Cloud, Java IoT

Microsoft Cloud: Article

Java & .NET: SOAP Over JMS Interoperability

Exposing a Java Web Service via JMS using Apache Axis 1.4 and consuming it from both Java and .NET clients

We build layers and layers, and as they help isolate different components, they impact performance and require additional managing. We can imagine a world of services after years of development, where to reach the very back end of business logic, a message flies through so many hubs that becomes impossible to attain reasonable SLAs anymore.

Why don't we eliminate the extra hubs when we can? How about if we reach the services directly through JMS? True, this may not be very appropriate for services exposed on the Internet, but it's probably more likely and preferable to do it in an organization where architectures like EDA (Event Driven Architecture) are implemented to help the production, detection, consumption of, and reaction to events.

We're going to show how to expose a Java Web Service via JMS using Apache Axis 1.4 and consume it from both Java and .NET clients by reusing the generated stubs and proxies and just changing the transport.

Java Service Consumer + MOM + Java Service Provider
As shown in Figure 1, our service consumer side consists of components that are both written by us (represented by the blue boxes) and those that are provided by Axis (represented by the white boxes). The picture on the service provider side is similar. In the middle, we have MOM (Message-Oriented Middleware), which increases the interoperability, portability, and flexibility of an application by letting it be distributed over multiple heterogeneous platforms. MOM reduces the complexity of developing applications that span multiple operating systems and network protocols by insulating developers from the details of the various operating systems and network interfaces.

Sample Service
Our sample Shipping Service has a GetDistance operation that accepts two ZIP codes and returns the distance between the two locations in miles.

To understand the roles and functionality of each component better, let's go through them.

Service Consumer Side
Consumer
The consumer is code we write. It uses generated-by-WSDL2Java stubs and proxies to instantiate the service request, populate it with request values, and provide it to the Axis client engine for transportation to the service endpoint.

The default transportation mechanism that Axis uses is the commonly accepted HTTP one and obviously it works with service endpoints that are specified by their http locations like HYPERLINK "http://momentumsi.com/service/shipping".

In our case, we want Axis to use JMS as a transport of our payload. We're looking for a way to reuse the generated-by-WSDL2Java code and just instruct Axis to deliver the payload via JMS instead of HTTP.

Fortunately, Axis provides a way to register different transports that should be used for the service endpoint URLs of the specified protocol. For example, we can register the provided-by-Axis org.apache.axis.transport.jms.JMSTransport to serve endpoint URLs that are specified by jms:// protocol like this:

import org.apache.axis.client.Call;
import org.apache.axis.transport.jms.JMSTransport;
...
Call.setTransportForProtocol("jms", JMSTransport.class);

The JMSTransport is responsible for parsing the transport-specific properties provided in the endpoint URL and setting them up in the message context. Later we'll explain how JMSSender handler takes those properties and does the actual JMS work.

Generated Proxy
The Generated Proxy is generated by the provided-by-Axis WSDL2Java utility. This component is used by the consumers to do both SOAP-over-HTTP and JMS calls. Even better, the component can be reused from any other registered transport implementation that we can come up in our architecture.

Axis Client Engine
The Axis Client Engine is provided by Axis. It can be configured with WSDD files that are written by us and provided to the engine via the generated proxy.

What is a WSDD file? A Web Service is deployed into Axis using an XML-based deployment descriptor file known as a Web Service Deployment Descriptor (WSDD). WSDD describes how the various components installed in Axis are to be chained together to process incoming and outgoing messages to the service. The WSDD can be used both on the client and server sides.

For our shipping service, here's an example of how to provide the client WSDD to the Axis client engine and then just invoke the GetDistance service operation:

import org.apache.axis.configuration.FileProvider;
...
EngineConfiguration engineConfig = new FileProvider("client-config.wsdd");
ShippingServiceLocator shippingServiceLocator = new ShippingServiceLocator(engineConfig);
ShippingSoapBindingStub shippingService = (ShippingSoapBindingStub)shippingServiceLocator.getShipping();
...
GetDistanceResponse response = shippingService.getDistance(request);

Notice that in this example the name and location of client-config.wsdd is hard-coded in the source code, but for production, you should change it so it's externalized and provided as a property, injected via the Spring framework or other mechanism.


More Stories By Stanimir Stanev

Stanimir Stanev is a senior consultant at MomentumSI's Enterprise Architecture Solutions practice. He has many years of experience focusing on providing enterprise architecture and strategy expertise to companies looking to migrate to or maximize the advantages of SOA principles.

More Stories By Rob Bartlett

Rob Bartlett is a senior consultant at MomentumSI's Software Development Solutions practice. He has over a decade of experience in technical roles, guiding major corporations in the design, implementation, and integration of business solutions.

Comments (0)

Share your thoughts on this story.

Add your comment
You must be signed in to add a comment. Sign-in | Register

In accordance with our Comment Policy, we encourage comments that are on topic, relevant and to-the-point. We will remove comments that include profanity, personal attacks, racial slurs, threats of violence, or other inappropriate material that violates our Terms and Conditions, and will block users who make repeated violations. We ask all readers to expect diversity of opinion and to treat one another with dignity and respect.


@ThingsExpo Stories
SYS-CON Events announced today that MobiDev, a client-oriented software development company, will exhibit at SYS-CON's 21st International Cloud Expo®, which will take place October 31-November 2, 2017, at the Santa Clara Convention Center in Santa Clara, CA. MobiDev is a software company that develops and delivers turn-key mobile apps, websites, web services, and complex software systems for startups and enterprises. Since 2009 it has grown from a small group of passionate engineers and business...
SYS-CON Events announced today that GrapeUp, the leading provider of rapid product development at the speed of business, will exhibit at SYS-CON's 21st International Cloud Expo®, which will take place October 31-November 2, 2017, at the Santa Clara Convention Center in Santa Clara, CA. Grape Up is a software company, specialized in cloud native application development and professional services related to Cloud Foundry PaaS. With five expert teams that operate in various sectors of the market acr...
SYS-CON Events announced today that Enzu will exhibit at SYS-CON's 21st Int\ernational Cloud Expo®, which will take place October 31-November 2, 2017, 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 ...
New competitors, disruptive technologies, and growing expectations are pushing every business to both adopt and deliver new digital services. This ‘Digital Transformation’ demands rapid delivery and continuous iteration of new competitive services via multiple channels, which in turn demands new service delivery techniques – including DevOps. In this power panel at @DevOpsSummit 20th Cloud Expo, moderated by DevOps Conference Co-Chair Andi Mann, panelists examined how DevOps helps to meet the de...
SYS-CON Events announced today that Cloud Academy named "Bronze Sponsor" of 21st International Cloud Expo which will take place October 31 - November 2, 2017 at the Santa Clara Convention Center in Santa Clara, CA. Cloud Academy is the industry’s most innovative, vendor-neutral cloud technology training platform. Cloud Academy provides continuous learning solutions for individuals and enterprise teams for Amazon Web Services, Microsoft Azure, Google Cloud Platform, and the most popular cloud com...
We build IoT infrastructure products - when you have to integrate different devices, different systems and cloud you have to build an application to do that but we eliminate the need to build an application. Our products can integrate any device, any system, any cloud regardless of protocol," explained Peter Jung, Chief Product Officer at Pulzze Systems, in this SYS-CON.tv interview at @ThingsExpo, held November 1-3, 2016, at the Santa Clara Convention Center in Santa Clara, CA
SYS-CON Events announced today that IBM has been named “Diamond Sponsor” of SYS-CON's 21st Cloud Expo, which will take place on October 31 through November 2nd 2017 at the Santa Clara Convention Center in Santa Clara, California.
In his session at Cloud Expo, Alan Winters, an entertainment executive/TV producer turned serial entrepreneur, presented a success story of an entrepreneur who has both suffered through and benefited from offshore development across multiple businesses: The smart choice, or how to select the right offshore development partner Warning signs, or how to minimize chances of making the wrong choice Collaboration, or how to establish the most effective work processes Budget control, or how to ma...
With major technology companies and startups seriously embracing Cloud strategies, now is the perfect time to attend 21st Cloud Expo October 31 - November 2, 2017, at the Santa Clara Convention Center, CA, and June 12-14, 2018, at the Javits Center in New York City, NY, and learn what is going on, contribute to the discussions, and ensure that your enterprise is on the right path to Digital Transformation.
SYS-CON Events announced today that CA Technologies has been named "Platinum Sponsor" of SYS-CON's 21st International Cloud Expo®, which will take place October 31-November 2, 2017, at the Santa Clara Convention Center in Santa Clara, CA. CA Technologies helps customers succeed in a future where every business - from apparel to energy - is being rewritten by software. From planning to development to management to security, CA creates software that fuels transformation for companies in the applic...
Multiple data types are pouring into IoT deployments. Data is coming in small packages as well as enormous files and data streams of many sizes. Widespread use of mobile devices adds to the total. In this power panel at @ThingsExpo, moderated by Conference Chair Roger Strukhoff, panelists looked at the tools and environments that are being put to use in IoT deployments, as well as the team skills a modern enterprise IT shop needs to keep things running, get a handle on all this data, and deliver...
In his session at @ThingsExpo, Eric Lachapelle, CEO of the Professional Evaluation and Certification Board (PECB), provided an overview of various initiatives to certify the security of connected devices and future trends in ensuring public trust of IoT. Eric Lachapelle is the Chief Executive Officer of the Professional Evaluation and Certification Board (PECB), an international certification body. His role is to help companies and individuals to achieve professional, accredited and worldwide re...
Amazon started as an online bookseller 20 years ago. Since then, it has evolved into a technology juggernaut that has disrupted multiple markets and industries and touches many aspects of our lives. It is a relentless technology and business model innovator driving disruption throughout numerous ecosystems. Amazon’s AWS revenues alone are approaching $16B a year making it one of the largest IT companies in the world. With dominant offerings in Cloud, IoT, eCommerce, Big Data, AI, Digital Assista...
No hype cycles or predictions of zillions of things here. IoT is big. You get it. You know your business and have great ideas for a business transformation strategy. What comes next? Time to make it happen. In his session at @ThingsExpo, Jay Mason, Associate Partner at M&S Consulting, presented a step-by-step plan to develop your technology implementation strategy. He discussed the evaluation of communication standards and IoT messaging protocols, data analytics considerations, edge-to-cloud tec...
"When we talk about cloud without compromise what we're talking about is that when people think about 'I need the flexibility of the cloud' - it's the ability to create applications and run them in a cloud environment that's far more flexible,” explained Matthew Finnie, CTO of Interoute, in this SYS-CON.tv interview at 20th Cloud Expo, held June 6-8, 2017, at the Javits Center in New York City, NY.
IoT solutions exploit operational data generated by Internet-connected smart “things” for the purpose of gaining operational insight and producing “better outcomes” (for example, create new business models, eliminate unscheduled maintenance, etc.). The explosive proliferation of IoT solutions will result in an exponential growth in the volume of IoT data, precipitating significant Information Governance issues: who owns the IoT data, what are the rights/duties of IoT solutions adopters towards t...
With the introduction of IoT and Smart Living in every aspect of our lives, one question has become relevant: What are the security implications? To answer this, first we have to look and explore the security models of the technologies that IoT is founded upon. In his session at @ThingsExpo, Nevi Kaja, a Research Engineer at Ford Motor Company, discussed some of the security challenges of the IoT infrastructure and related how these aspects impact Smart Living. The material was delivered interac...
The Internet giants are fully embracing AI. All the services they offer to their customers are aimed at drawing a map of the world with the data they get. The AIs from these companies are used to build disruptive approaches that cannot be used by established enterprises, which are threatened by these disruptions. However, most leaders underestimate the effect this will have on their businesses. In his session at 21st Cloud Expo, Rene Buest, Director Market Research & Technology Evangelism at Ara...
When growing capacity and power in the data center, the architectural trade-offs between server scale-up vs. scale-out continue to be debated. Both approaches are valid: scale-out adds multiple, smaller servers running in a distributed computing model, while scale-up adds fewer, more powerful servers that are capable of running larger workloads. It’s worth noting that there are additional, unique advantages that scale-up architectures offer. One big advantage is large memory and compute capacity...
Artificial intelligence, machine learning, neural networks. We’re in the midst of a wave of excitement around AI such as hasn’t been seen for a few decades. But those previous periods of inflated expectations led to troughs of disappointment. Will this time be different? Most likely. Applications of AI such as predictive analytics are already decreasing costs and improving reliability of industrial machinery. Furthermore, the funding and research going into AI now comes from a wide range of com...