What is websphere message broker
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IBM® WebSphere® Message Broker is a lightweight, advanced enterprise service bus (ESB) that enables the integration of data sources from a wide range of platforms across service-oriented architecture environments (SOA) and non-SOA environments. You can use IBM WebSphere Message Broker to connect applications together, regardless of the message formats or protocols that they support. This connectivity means that your diverse applications can interact and exchange data with other applications in a flexible, dynamic, and extensible infrastructure. WebSphere Message Broker routes, transforms, and enriches messages from one location to any other location.
Two integration capabilities that WebSphere Message Broker provides are of particular interest to many midmarket companies. First is the ability to use WebSphere Message Broker to integrate Microsoft .NET applications into a broader connectivity solution, which is the capability highlighted in this IBM Redbooks® Solution Guide. Second is the ability to use WebSphere Message Broker with WebSphere MQ File Transfer Edition to transfer and use business data that is held in files.
IBM ® WebSphere ® Message Broker is a lightweight, advanced enterprise service bus (ESB) that enables the integration of data sources from a wide range of platforms across service-oriented architecture environments (SOA) and non-SOA environments. You can use IBM WebSphere Message Broker to connect applications together, regardless of the message formats or protocols that they support. This connectivity means that your diverse applications can interact and exchange data with other applications in a flexible, dynamic, and extensible infrastructure. WebSphere Message Broker routes, transforms, and enriches messages from one location to any other location:
- It supports a wide range of protocols: WebSphere MQ, Java Message Service (JMS) 1.1, HTTP and HTTPS, web services (SOAP and REST), file, Enterprise Information Systems (including SAP and Siebel), and TCP/IP.
- It supports a broad range of data formats: binary formats (C and COBOL), XML, and industry standards (including SWIFT, EDI, and HIPAA). You can also define your own data formats.
- It supports many operations, including routing, transforming, filtering, enriching, monitoring, distribution, collection, correlation, and detection.
Two integration capabilities that WebSphere Message Broker provides are of particular interest to many midmarket companies. First is the ability to use WebSphere Message Broker to integrate Microsoft .NET applications into a broader connectivity solution, which is the capability highlighted in this IBM Redbooks ® Solution Guide. Second is the ability to use WebSphere Message Broker with WebSphere MQ File Transfer Edition to transfer and use business data that is held in files. Figure 1 shows a high-level overview of the WebSphere Message Broker capabilities and of features that are of special interest to midmarket companies.
Figure 1. WebSphere Message Broker features and midmarket highlights
Did you know?
WebSphere Message Broker was used to power the mobile application for the Wimbledon tennis tournament in 2010. For more information, see "All England Lawn Tennis and Croquet Club (AELTC) – Wimbledon" at:
WebSphere Message Broker provides a broad range of integration capabilities so that companies can rapidly integrate internal applications and connect to partner applications. The types and complexity of the integration required vary by company, application types, and several other factors. With WebSphere Message Broker, organizations of any size can eliminate point-to-point connections and batch processing. Moving forward in this way increases business flexibility and smart interoperability of systems regardless of platform, protocol, or data format. WebSphere Message Broker is frequently associated with large enterprise solutions because of the capabilities to connect to enterprise information systems, such as SAP, Siebel, IBM CICS®, and others. However, IBM also recognized a growing need for ESB capabilities in midmarket companies. For this reason, new features and editions of WebSphere Message Broker provide targeted capability for this growing segment.
WebSphere Message Broker offers comprehensive support for Microsoft .NET environments. Through this support, midmarket clients who have an investment in .NET solutions and skills can enhance their business solutions by using the integration capabilities of WebSphere Message Broker. WebSphere Message Broker can interact with new or existing .NET and Component Object Model (COM) applications. This way WebSphere Message Broker applications can access data that is held in Microsoft business applications and customer relationship management (CRM) suites. The proven scalability and availability of WebSphere Message Broker ensures that clients can continue to grow and protect their software investments.
WebSphere Message Broker V8 introduces the ability to integrate with existing Microsoft .NET Framework applications. A .NET assembly can be called from within a message flow, and the WebSphere Message Broker run time can host and run .NET code. Even the application development aspect is tightly integrated. A new .NETCompute node in WebSphere Message Broker can be dragged to a message flow in the canvas in the Message Broker Toolkit. Double-clicking the .NETCompute node opens Microsoft Visual Studio 2010, so that you can develop the code for the node. Programmers can use Microsoft Visual Studio and Common Language Runtime (CLR)-compliant languages, such as C#, Visual Basic (VB), F#, and C++/CLI (Common Language Infrastructure) to build their applications. At the same time, they can integrate the capabilities of these applications into message flows.
Processing logic in WebSphere Message Broker is implemented by using message flows. Through message flows, messages from business applications can be transformed, augmented, and routed to other business applications. Message flows are created by connecting nodes. WebSphere Message Broker provides a wide selection of built-in nodes. These nodes perform tasks that are associated with message routing, transformation, and enrichment. Message flows are created and tested by using the WebSphere Message Broker Toolkit, a sophisticated, easy-to-use programming tool that provides a full range of programming aids.
A new node, called the .NETCompute node. was added to the set of built-in nodes so that message data can be processed by using a CLR-compliant .NET programming language. You can use this new node to build messages, interact with .NET or COM applications, transform messages from one format to another, copy messages, route messages, and modify messages. You must configure the node with a .NET assembly file that contains the code that performs the logic of the node.
The Message Broker Toolkit provides integration with Microsoft Visual Studio 2010, so that you can develop .NET solutions in Visual Studio and integrate them into the message flow. You can develop applications that use the .NET CLR from ESQL procedures or from a .NETCompute node. By using the Message Broker Toolkit, you can rapidly open Visual Studio solutions that are associated with .NETCompute nodes by double-clicking the node and selecting Open Microsoft Visual Studio. as shown in Figure 2.
Figure 2: Opening Microsoft Visual Studio from the Message Broker Toolkit
By using Message Broker Toolkit, you can also drag dynamic link libraries (DLLs) that are associated with Visual Studio solutions to the message flow to create a .NETCompute node that is configured for the solution. As a further development aid, the Visual Studio debugger can be attached to the broker execution group process. You can use the Visual Studio debugger with the broker debugger to perform step-through debugging of flows and code.
The WebSphere Message Broker run time hosts and runs .NET code that is associated with a WebSphere Message Broker solution. Message flows that contain .NET code can only be deployed and run successfully on brokers that are on Windows platforms. WebSphere Message Broker can also integrate with Microsoft .NET applications that expose a Windows Communication Framework web service interface. This method is less efficient than a direct invocation by using the .NETCompute node, but enables brokers that are not based on Windows to remotely invoke .NET business logic.
Finally, by using the .NETCompute node, WebSphere Message Broker acts as a bridge between IBM messaging technology (WebSphere MQ) and Microsoft messaging technology (MSMQ). This bridge enables the creation of solutions that span the two messaging environments.
This solution guide highlights two usage scenarios:
- Creating a single interface that can connect and integrate heterogeneous data stores for transforming data
- Accessing a Windows Communication Foundation service from a message flow
Scenario 1: Creating a single interface that can connect and integrate heterogeneous data stores for transforming data.
This scenario uses the WebSphere
Message Broker capabilities to connect and integrate applications that use Microsoft Dynamics CRM, SAP, and Microsoft SQL Server 2008 databases with an online store scenario. The .NETCompute node is used to evaluate messages and transform the request, providing .NET programmers with a familiar way to add logic to the message flow. The node is also used to interact with the Microsoft SQL Server 2008 database and the Microsoft Dynamics CRM.
A large online store, whose data warehouse is based on an SAP system, recently acquired another online store whose data warehouse is based on a home-grown database system. After the acquisition, the store wants a clean merger with SAP as the master data warehouse and with Microsoft Dynamics CRM for their call center service representatives and any front-end user interface applications.
For example, a customer wants to subscribe to a service with the online store. If the customer is an existing customer, their previous customer information must be associated with the current request. These existing records can be on the SAP system, the database (from the acquisition), or both. Therefore, these systems require one interface and a consolidated view for better customer service.
The IT team deployed WebSphere Message Broker connectivity to connect their acquired SQL-based home-grown data warehouse and SAP systems with Microsoft Dynamics CRM Online. This solution creates a 360-degree view of customers in real time. All account, credit, and sales information can now be sent to Microsoft Dynamics CRM Online from the SAP and database. Figure 3 illustrates the message flow for this scenario.
Figure 3. Message flow for scenario 1
This solution includes the following highlights:
- WebSphere MQ messages enter the flow through the FlowInput node and exit through the FlowOutput nodes.
- The FilterRequest .NETCompute node determines whether the request is from an existing or new customer. If the request is from a new customer, the message is sent to the SAP Create node. If the request is from an existing customer, the message is sent to the SAP Retrieve node.
- Three SAPRequest type nodes are used to interact with the SAP system:
- SAP Retrieve retrieves the Customer records from the SAP system based on a customer number search.
- SAP Create creates a customer record on the SAP system based on a reference customer.
- SAP Update updates the newly created customer record with field values.
- A Compute node, called AddCustDetails. uses ESQL to construct the SAP request to update the customer details.
- The .NETCompute node DB CreateCRMOnlineCustomer is perhaps the most complex node in the sequence. This node interacts with the Microsoft SQL Server database and creates the customer record in Microsoft Dynamics CRM Online.
Scenario 2: Accessing a Windows Communication Foundation service from a message flow
Windows Communication Foundation (WCF) is a distributed application interface (API) that is part of the Microsoft .NET framework. With WCF, independent applications can interoperate across a network through a message passing interface. In this scenario, a WCF service is consumed by a WebSphere Message Broker message flow to expose the WCF service to a wide range of enterprise applications as part of an ESB.
This scenario (Figure 4) represents an application that is used by a fictional insurance company to process insurance claims. The insurance company provides insurance policy products from financial partners that are transparently under a single brand. The insurance company developed a WCF service, called ClaimsProcessingWcfService. to make the insurance policies and claims available to client applications.
Figure 4. Message flow for scenario 2
The WCF service consists of several business objects that operations can be performed on, including customers, policies, claims, and payments. These business objects are kept in a persistent store so that details can be accessed from multiple applications and physical locations. When an operation is performed on one of these business objects, the WCF service stores the updated state of the objects and generates appropriate responses to return to the requesting application. The operations that are supported are ViewClaim, ViewPolicy, ViewOutstandingClaims, CreateClaim, CreatePolicy, AcceptClaim, and RejectClaim.
A message flow accesses the WCF service to integrate policy and claims information into the WebSphere Message Broker application. The message flow uses the .NETCompute node to embed a WCF client for the service by using a TCP/IP-based transport.
The message flow follows this sequence:
- An input message is received on one of the input nodes for the flow. The message is transformed into a Canonical Message Format that is suitable for transmission across other ESB services (not shown).
- The CallWCFService node executes the .NET application that contains the WCF client code for the WCF service. When the node is reached in the message flow, a WCF request is made to the ClaimsProcessingWcfService by using TCP/IP. The WCF service executes the operation.
- Additional processing that is required for this operation is performed by the .NETCompute nodes:
- When a new policy is created, a Microsoft Word document that contains a policy confirmation letter is generated. This letter is emailed to the customer’s email address and is written to the local file system so that it can be printed and mailed to the customers physical address.
- When an insurance claim is approved, a payment is issued by sending the appropriate data to the financial partner that underwrites the particular policy that the customer bought. This data is placed on an MQ queue and is assumed to exchange data in the Canonical Message Format.
- A reply message is sent to the originator of the request with the results from the operation.
WebSphere Message Broker interfaces with other IBM products. and with products from other software vendors, to provide services that enhance message processing in the broker:
- IBM WebSphere Service Registry and Repository
- IBM WebSphere Process Server and IBM Process Server
- IBM WebSphere Integration Developer and IBM Integration Designer
- IBM WebSphere Business Monitor
- IBM WebSphere Transformation Extender
- IBM WebSphere MQ File Transfer Edition
- Enterprise Information Systems
- IBM Tivoli® Federated Identity Manager (TFIM)
- Lightweight Directory Access Protocol (LDAP)
- IBM RACF® and other External Security Managers, on IBM z/OS® only
- Tivoli License Manager
- Citrix Presentation Server
- Databases and ODBC support
- IBM DB2®
- Microsoft SQL Server
- IBM Informix®
- Databases and JDBC support
- IBM DB2 Driver for JDBC and SQLJ
- Microsoft SQL Server 2005 JDBC driver
- Oracle JDBC Driver
- Sybase jConnect for JDBC
- IBM Informix JDBC
- File systems
- Email systems
- Development repositories
- IBM Rational® ClearCase®
- Other repositories supported by Eclipse
- Compilers (C and Java)
- Microsoft Internet Explorer
- Adobe Flash Player for Quick Tour
- Adobe Acrobat for reading PDF files
- Java and JMS providers
WebSphere Message Broker supports IBM AIX ®. HP, Linux, Solaris, Windows, and z/OS. However, when using the .NETCompute node, be aware that the WebSphere Message Broker run time hosts the .NET code that is associated with a WebSphere Message Broker solution. That is, message flows that contain .NET code can only be deployed and run successfully on brokers that are on Windows platforms.
For specific information about software and hardware requirements, see the WebSphere Message Broker product page at:
Table 1 shows the ordering information.
Table 1. Ordering part numbers and feature codesSource: www.redbooks.ibm.com