2. Brian Noyes Chief Architect IDesign Inc. SOA401

3. Chief Architect IDesign Inc. (www.idesign.net) Microsoft Regional Director MVP Microsoft MVP Connected Systems About Brian Publishing Developing Applications with Windows Workflow Foundation, LiveLessons training DVD, June 2007 Smart Client Deployment with ClickOnce, Addison Wesley, January 2007 Data Binding in Windows Forms 2.0, Addison Wesley, January 2006 MSDN Magazine, MSDN Online, CoDe Magazine, The Server Side.NET, asp.netPRO, Visual Studio Magazine Speaking Microsoft Tech∙Ed U.S., Europe, Malaysia, Visual Studio Connections, DevTeach, INETA Speakers Bureau, MSDN Webcasts E-mail:brian.noyes@idesign.netbrian.noyes@idesign.net Blog:http://briannoyes.nethttp://briannoyes.net

4. Agenda SOA Overview WF Service Capabilities Exposing WF Workflows as Services Consuming Services from Workflows Workflow 4.0 Coming Changes Workflows in the Cloud

5. SOA Overview Service Orientation is a way of building composite applications A service is a composable unit of processing and data exposed to consumers Details of the implementation are hidden from the consumer of the service A further abstraction from objects or components

6. SOA Tenets Services are autonomous Services share schema and contract, not type Services are compatible based on policy Service boundaries are explicit

7. Workflow as Orchestration Loan Application Process Submit Loan Application Send to Reviewer Fund Application Approve Application Validate Application Notification Service Funding Service Approval Service Validation Service Notification Biz Layer Funding Biz Layer Approval Biz Layer Validation Biz Layer Notification Data Layer Funding Data Layer Approval Data Layer ExchangeSQL dB

8. Workflow as Service Operation Loan Application Process Debit Account Transfer Funds Credit Account Approve Transfer Debit Manager Fund Manager Credit Manager Authorization Manager Transfer Money

9. Workflow Coordination Loan Application Process Submit Loan Application Send to Reviewer Fund Application Approve Application Validate Application Loan Approval Process Send to Reviewer Approve Application Validate Application

10. Agenda SOA Overview WF Service Capabilities Exposing WF Workflows as Services Consuming Services from Workflows Workflow 4.0 Coming Changes Workflows in the Cloud

11. WF Service Capabilities WF leverages WCF’s ability to define, expose, and call services Interoperable Extensible Productive Complies with SOA tenets

12. WF Service Capabilities Expose workflows as services Can be clients to services ReceiveActivity Activities as service operation implementation SendActivity Custom activity encapsulating a proxy

13. WF Service Capabilities WF/WCF supply supporting bindings and hosting capabilities to make it easy to expose the WF service capabilities Bindings: BasicHttpContextBinding NetTcpContextBinding WSHttpContextBinding WorkflowServiceHost

14. Agenda SOA Overview WF Service Capabilities Exposing WF Workflows as Services Consuming Services from Workflows Workflow 4.0 Coming Changes Workflows in the Cloud

15. Exposing Workflows as Services Add ReceiveActivity to workflow Set service contract/method properties Bind input parameters/return values Create host application WorkflowServiceHost – self-hosted WorkflowServiceHostFactory – IIS-hosted Use Workflow compatible bindings NetTcpContextBinding BasicHttpContextBinding WSHttpContextBinding

16. Context Bindings Round trip workflow instance ID in custom header Similar to cookie passing in a browser Uses WCF contexts to store header info Not required to call workflow services, but makes it much easier Automatic routing by workflow runtime to target workflow instance

17. Multiple Clients per Workflow Will need to extract instanceID from message headers Proxy inner channel context manager

18. Exposing Workflows as Services

19. Agenda SOA Overview WF Service Capabilities Exposing WF Workflows as Services Consuming Services from Workflows Workflow 4.0 Coming Changes Workflows in the Cloud

20. Consuming Services from Workflows SendActivity acts as a WCF proxy Needs service contract interface that it will be calling Needs proxy configuration to specify binding and endpoint information

21. SendActivity Limitations Default security on NetTcpContextBinding and WSHttpContextBinding are Windows Authentication based on host process identity Default security on BasicHttpBinding is None Can configure a client certificate for certificate authentication in host process app.config No easy way to use username/password or token authentication Solution: custom activity that encapsulates a normal WCF proxy

22. Consuming Services from Workflows

23. Agenda SOA Overview WF Service Capabilities Exposing WF Workflows as Services Consuming Services from Workflows Workflow 4.0 Coming Changes Workflows in the Cloud

24. What’s New in 4.0? Specific to Services SendMessage / ReceiveMessage activities replace Send/Receive activities Better integration with WCF capabilities Easier correlation for calls between workflows Across WF...?TONS!

25. Agenda SOA Overview WF Service Capabilities Exposing WF Workflows as Services Consuming Services from Workflows Workflow 4.0 Coming Changes Workflows in the Cloud

26. Set of new activities for integrating with Cloud Services Run workflows in the cloud Scalable, robust, reliable infrastructure for running workflows

27. Workflows in the Cloud Child Workflow Parent Workflow Invoke Sub-Process Aggregate Results Notify Client Start Process Step 1 Step 2 Client App

28. Summary WF fits nicely into the future of cloud computing WF fits nicely into the SOA picture with.NET 3.5 and 4.0 capabilities Consider WF for front-end service coordination (orchestration) Consider WF for service-processing implementation Can be used for workflow–workflow coordination

29. Resources IDesign WF Master Class Developing Applications with Windows Workflow Foundation, Brian Noyes, LiveLesson training DVD http://www.softinsight.com/LiveLesson http://www.softinsight.com/LiveLesson Essential Windows Communication Foundation (WCF): For.NET Framework 3.5, Resnick, Crane, Bowen, Addison Wesley Pro WF, Bruce Bukovics, Apress Essential Windows Workflow Foundation, Dharma Shukla and Bob Schmidt, Addison Wesley, 2006 http://www.awprofessional.com/bookstore/product.asp?isbn=0 321399838&rl=1 http://www.awprofessional.com/bookstore/product.asp?isbn=0 321399838&rl=1 E-mail: brian.noyes@idesign.netbrian.noyes@idesign.net Blog: http://briannoyes.nethttp://briannoyes.net

30. www.idesign.net

31. Track Resources Required Slide Track PMs will supply the content for this slide, which will be inserted during the final scrub. Required Slide Track PMs will supply the content for this slide, which will be inserted during the final scrub. SOA www.microsoft.com/soa msdn.microsoft.com/biztalk www.microsoft.com/biztalk “Dublin” www.microsoft.com/net/dublin “Oslo” msdn.microsoft.com/oslo www.microsoft.com/net/oslo.aspx msdn.microsoft.com/wcf msdn.microsoft.com/wf www.microsoft.com/net msdn.microsoft.com/azure/netservices www.microsoft.com/azure/netservices twitter.com/dotnetservices

32. www.microsoft.com/teched Sessions On-Demand & Community http://microsoft.com/technet Resources for IT Professionals http://microsoft.com/msdn Resources for Developers www.microsoft.com/learning Microsoft Certification and Training Resources www.microsoft.com/learning Microsoft Certification & Training Resources Resources Required Slide Speakers, TechEd 2009 is not producing a DVD. Please announce that attendees can access session recordings at TechEd Online. Required Slide Speakers, TechEd 2009 is not producing a DVD. Please announce that attendees can access session recordings at TechEd Online.

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