Sudheer d desertcodecamp_11_05_2011
- 1. Developing Applications for Windows Azure Platform Sudheer Dhulipalla Microsoft Corporation
- 2. Agenda WHO WILL BENEFIT FROM TOPICS WHAT YOU’LL LEAVE WITH THIS TALK • Cloud application • Windows Azure Basics • Building applications developers with Windows Azure • Windows Workflow Platform • Developers building on- foundation Basics premise .NET and non • Azure platform .NET applications • Service Bus (Messaging capabilities leveraging cloud services Service) Basics • Workflow service in the cloud • Web (ASP), Worker (workflow) sample with Service Bus Queues
- 3. Windows Azure • Microsoft’s cloud platform – Applications platform in the cloud that allows Microsoft datacenters to host and run applications • Windows Azure is Designed for: – Incremental Scalability – Reliability, high availability and fault tolerance – Developer agility and open standards (HTTP REST) – Utility based (pay as you go) – Cost effective based on sharing of resources – Service Oriented – SLA driven
- 4. What is Windows Azure? QUEUE
- 5. Windows Azure App - Typical Architecture Web Worker LB Role Role (ASP, Web Services, (Web Services, Workflows, custom Workflows, custom code etc.) code etc.) Service Bus, Storage, Cache etc.
- 7. Code Walkthrough - Sample #1 • Publishing a simple ASP page to Azure cloud – SDK and Tools setup – Portal sign up – Creating an ASP.NET WebRole project – Publishing the web page and accessing from local Azure Cloud Web Role Local Browser Running ASP Page
- 8. WINDOWS WORKFLOW FOUNDATION
- 9. What is Workflow Foundation? • WF4 provides declarative Workflow authoring of programs that coordinate work Activity Library • Activities • Runtime • Tooling • Significant Features WF Runtime Extensions – Web Services Integration Persistence – Flowchart style Workflows Tracking – Better Dataflow … – Better programming model Host (.exe, IIS/WAS, WF Service/Server, …) – State machine Tooling • Part of .NET framework VS VS Rehosted Designer Debugger Designer
- 10. Code Walkthrough – Workflow Samples #2 • Visual Studio Integration • Project types • Hello world sample • Procedural Workflow sample • Web Services (WCF) integration
- 11. Example Workflow Design Patterns in Azure • WF is useful in building long running applications (long running business logic) in worker role • WF can also run in Web Role as Workflow Service • Example patterns – ASP (Web Role) OR WCF (Web Role) • Queues or Topics • Workflow (Worker role) • SQL Azure / Other Services – Workflow Service (Web Role) • SQL Azure / Other services
- 12. Code Walkthrough - Sample #3 • Publishing a Workflow Web service in the cloud – Creating a WCF service WebRole project and adding workflow service to it – Publishing the service and accessing the service operations from a WCF test client Azure Cloud Web Role Running Local Console App Workflow Service
- 13. WINDOWS AZURE SERVICE BUS (A MESSAGING SERVICE IN THE CLOUD)
- 14. Brokered Messaging Entities: Queues Queue • Durable Queues • Scheduled messages • Session based message streams • Transactions support • Sequential Message Log • HTTP / REST / WCF / .NET API support
- 15. Brokered Messaging Entities: Topics Sub Topic Sub Sub • Durable topics and subscriptions • Sequential Message Log • Multiple subscribers over the log, each with own cur/locks • Subscribers can filter with rules and expressions on message properties • HTTP / REST / WCF / .NET API support
- 16. Code Walkthrough - Sample #4 • Publishing a project with web / worker roles – Web role hosting a web page – Worker role hosting a Workflow – Web to worker communication over Service Bus Queues – Local debugging and Dev Fabric Azure Cloud Web Role Worker Role Running ASP running Page - workflow – Local Browser messaging messaging through through Queues SB Queues Queues
- 17. Windows Azure lets you manage applications, not virtual machines.
- 18. Summary • We covered the basics of Windows Azure, Windows Workflow and Service Bus • We walked through a few Azure code samples (hosting a web page, hosting workflow in the web role and hosting workflow in the worker role and using Service Bus queues for communication) • Developers can use Visual Studio, .NET frameworks, Azure cloud services, other languages and frameworks of their choice to build cloud applications and services • You can sign up for free trial today at http://windowsazure.com and start building cloud applications with Windows Azure