SOA Blueprints Learning Best Practices and Sample Applications

SOA Blueprints Learning Best Practices and Sample Applications for SOA Steve Wilkes Senior Middleware Maven 7 THE MIDDLEWARE COMPANY 09. 22. 2004 © The Middleware Company

AGENDA Why are we doing this? What are the goals? SOA Concepts The Reference Example The Specification Implementations © The Middleware Company

Why are we doing this? SOA is the new old thing - The concept has been around for years - The practical realization has only recently materialized J 2 EE had the Pet. Store - Initially a Patterns application without specification - Very successful as a learning tool - In some ways too successful – people learned architectural antipatterns in addition to the technology that was shown SOA needs a Pet. Store not The Pet. Store - Demonstrating SOA best practice requires many applications - Industry focus on (inter) communication not e. Commerce © The Middleware Company

What are the goals? Part of a long term project, SOA Blueprints aims to: - Define a baseline standardized set of enterprise applications Focus on SOA principles Highlight SOA design patterns and best practices Encourage SOA adoption Be industry agnostic Be applicable to as many organizations as possible The specification will lead to: - An agreement on SOA terminology A reference open source implementation An implementation by vendors Additional modules with particular industry focus © The Middleware Company

SOA Concepts SOA Much More Than Web Services Common SOA Terms Patterns SOA Platform Requirements Standards Glossary © The Middleware Company

SOA Much More than Web Services Service definition does not include protocol or wire format How many protocols in your organization? WSDL could be the key Service providers should concentrate on the service Service consumers just want to use the service It’s the SOA that allows providers and consumers to communicate © The Middleware Company

Common SOA Terms (the specification includes those highlighted in blue) © The Middleware Company

SOA Terms (cont) Synchronous and Asynchronous Services Component Services Data Services Composite (Business) Services Conversational (Workflow) Services Publish-Subscribe Services Service Brokers Exception Handling And Compensating Services Service Security Interception And Extensibility Interoperability © The Middleware Company

SOA Patterns Initial patterns will include: Service Registry and Static Binding Service Registry and Dynamic Binding Service Broker Distributed Service Broker Service Bus Distributed Service Bus © The Middleware Company

SOA Anti-Patterns Overly granular business services Remote access to local services Overuse of XML Use of loose coupling where tight coupling is required © The Middleware Company

SOA Granularity © The Middleware Company

SOA Development Requirements Target implementation environments should provide: Definition of services independent of implementation, location or use Implementation and hosting of services as a provider Location and usage of services as a consumer Assembly of services from other services and business rules Support for synchronous, asynchronous and conversational services Orchestration of application presentation built on services and rules Automated data transformation between disparate data structures Provisioning of local and remote services Support for simulating, testing and debugging of services © The Middleware Company

Standards being considered for inclusion include: WS-I BPEL 4 WS WS-Security WS-Notification Jini WSRP WS-Manageability © The Middleware Company

Reference Example Common Enterprise Applications (the specification includes those highlighted in blue) © The Middleware Company

The Specified Applications Based around fictitious enterprise - Generi. Co A distributed enterprise wide security mechanism An employee self service portal providing: - Authentication Organization Browser Task List Management Expense Reporting Employee Reviews A Product data service Some payroll & supply chain functions as required by the specification A basic HR application for management of employees and departmental structure © The Middleware Company

The Security Mechanism Provide security for: - New Applications - Legacy Applications Provide indentity management Automate employee security © The Middleware Company

The Employee Portal © The Middleware Company

Employee Portal Authentication Utilizes Security Adaptor Services Provide Login / Logout Capabilities Enable Password Change Provide roles based access - to pages - to portlets - to actions © The Middleware Company

Employee Portal Organization Browser Search for Employees Browse Departments Get Department Details Get Employee Details © The Middleware Company

Employee Portal Task List Management View Task List See Task Details Add Tasks Update Tasks Link to Expenses Link to Reviews © The Middleware Company

Employee Portal Expense Reporting View Report List See Report Details Add Report Update Report Authorize Report Pay Report Utilization of Pay Roll Services © The Middleware Company

Employee Portal Employee Reviews View Review List See Review Details Add Review Update Review Validate Review Add Ratings Finalize Review Utilization of Pay Roll Services © The Middleware Company

Product Data Services Two Product Databases Different Schemas Want single data service to access product information Enable category listing Enable product listing Needs to generate unique keys Add missing information Query across sources © The Middleware Company

Message Definition Messages are defined within the specification in a platform agnostic fashion: © The Middleware Company

Process Definition Processes are also defined in an agnostic way: © The Middleware Company

Implementation Guidelines Specification is platform agnostic Database schema will be supplied WSDL will be provided for all services Service testing will be provided by Push. To. Test Transport protocols must be adhered to Use of Portal server is recommended Web design should follow guidelines Standards should be adhered to where stated © The Middleware Company

Vendor Implementations Currently have commitment from the following vendors to provide implementations of the reference example: BEA Systems Diamelle Technologies IONA Technologies Microsoft Oracle Pramati Sun Microsystems Rogue Wave Software © The Middleware Company

Open Source Implementation Looking to build open source team Currently have a number of committed members Technologies we’re hoping to use include: - Hibernate for persistence Spring as a lightweight container Axis for web service provisioning e. Xo as an enterprise portal Twister as a BPEL 4 WS engine Maven for build and management Will become reference implementation for SOA © The Middleware Company

Possible Interesting Things An additional 10 or so vendors want to enhance the spec Service management (Qos) an interesting add-on Jini message board talking about an implementation Some vendors considering CORBA implementation Would like to include Mobility component WSRP seems natural extension to Portal specification Including more standards is a must Launching an SOA Blueprints Wiki very soon Open Source Implementation home announced soon © The Middleware Company

Next Steps Q&A Goto soablueprints. com Download the specification Send us feedback Get involved in open source implementation © The Middleware Company

The. Server. Side. com The. Server. Side. NET Middleware. RESEARCH. com Steve Wilkes Senior Middleware Maven 7 © The Middleware Company