While the service definition and artifact generation are important to understand, if you want to get serious about SOA, you must consider the problems of security, performance, governance and monitoring. Those issues can many times not be solved with the service definition, but they require additional infrastructure and configuration steps. IBM WebSphere DataPower provides a distinct and competitive hardware, software, and infrastructure stack which allows you to address many of the SOA challenges mentioned earlier. This gives a wide variety of clients the ability to talk to DB2 — without even being database-aware. These appliances offer an innovative, pragmatic approach to harness the power of SOA. By using them, you can simultaneously use the value of your existing application, security, and networking infrastructure investments.
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Dedicated DataPower hardware appliances can process XML message at wire speed, and their robust security features protect against threats such as buffer overflows or XML denial-of-service attacks.
This article describes an end-to-end XML message flow sent from a client through the Internet via HTTP to an intermediary WebSphere DataPower Appliance, which further transports it over JMS to a queue destination on a messaging engine running in the service integration bus for persistence.
In addition, you can use a message-driven bean associated with a listener on the destination to asynchronously consume any message that arrives in the queue: Figure 1. Asynchronous messaging support provides applications with the ability to create, send, receive, and read asynchronous requests as messages.
Click New, enter the Server name as server1, and click Next: Figure 2. Create a new application server In the next panel, for Server template accept the default and click Next. Click Save and a new server will be added which is in stopped state. Start the new server. Service Integration Bus is a group of interconnected servers and clusters that have been added as members of the bus. It supports applications using message-based and service-oriented architectures.
Now create a new bus: Navigate to Service integration buses and click New. Enter the name of your bus as Bus1, leave the Bus security box unchecked, and click Next. Click Finish and Save. In the list of Buses, click Bus1. Click on Bus members on the right-hand panel and on the next page click Add to add the server server1 that was created earlier as the bus member. Select the Server radio button, select node1:server1 from the list, and click Next: Figure 3.
Add a new bus member View image at full size In the next panel, for Type of message store, select File store, which means that messages are hosted directly on the file system of the underlying operating system and consist of a set of flat files for the persistence of messages. Click Next. Accept the default values on later panels and click Next, then click Finish, and Save. Now navigate to Service integration buses, click Bus1, and then click Messaging engines on the right-hand panel.
After the server is added as a bus member above, a messaging engine not yet started because it requires a server restart with name node1. As described later in the article, the DataPower JMS client will connect to this bus at the above messaging engine associated with its server bus member. Again navigate to Service integration buses, click Bus1, and then click Destinations under Destination resources on the right-hand panel.
Click New to add a queue destination on the bus. For Destination type, select Queue and click Next. In the next panel, enter the Identifier as Q1 name of the queue and click Next: Figure 4.
Then click Finish and Save. Finally, restart the server, node agent, and deployment manager so the configuration changes will take effect. DataPower appliances meet the challenges of an SOA network with the following features: Consumable simplicity An easy-to-install and easy-to-maintain network appliance that can satisfy both application and network operational groups, supporting current and emerging standards, as well as readily available XML Web services standards.
Acceleration A drop-in solution that can streamline XML and Web service deployments, helping to lower the total cost of ownership and accelerate a return on your assets as you implement SOA. DataPower Appliances are purpose-built hardware devices that can offload overtaxed servers by processing XML, Web services, and other message formats at wire speed.
The WebSphere JMS object is used by messaging applications to connect to the service integration bus at its messaging engine associated with the bus member and is responsible for periodically monitoring and polling queues, ensuring that sent messages are directed to the correct receiving queue.
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Shakagal Create and deploy Data Web Services on WebSphere DataPower XI50 Integration Appliance Click on the Actions While the information provided so far gives you the ability to write the thtorial XSL scripts by hand to implement the transformation mappings necessary for a data access service, this is a very time-consuming and error-prone task. For example, the XSL artifacts generated by Data Studio are added to such a processing rule in form of a transform action. Related Resources Store Articles Blogs. DataPower provides different configuration categories for different kind of services as Figure 3 illustrates.
Create and deploy Data Web Services on WebSphere DataPower XI50 Integration Appliance