MSDN Magazine - January 2009 - (Page 57)

Figure 7 Creating a New “Dublin” Service Library As you can see, “Dublin” provides several runtime databases that lay a foundation for service persistence and monitoring. There is a layer of runtime components and services provided by the .NET Framework that build on top of these databases. “Dublin” further extends these runtimes to provide integrated hosting, persistence, monitoring, and messaging capabilities. This layer, in conjunction with the underlying runtime databases, constitutes what is referred to as “Dublin.” The top two layers in the architecture are what make “Dublin” usable by humans. There’s a management API layer that makes the various capabilities scriptable via Windows PowerShell cmdlets. On top of that there is an IIS Manager experience that should feel familiar to today’s IIS administrators because it actually builds on the Windows PowerShell cmdlets. So everything you can do in IIS Manager you can also do in Windows PowerShell. Microsoft has added numerous UI extensions to IIS Manager for performing the various hosting and management tasks described in this section. There are extensions for deploying and configuring applications, managing applications, and monitoring applications. These extensions also provide a runtime dashboard of your system showing things such as running, suspended, and persisted workflow instances. you can focus on implementing the WCF workflow service using the various techniques described earlier in this article. The new workflow designer experience makes it possible to implement your entire service using the graphical workflow development approach. Once you’re finished building your complete workflow service, you’re ready to deploy the service to a Windows Server enabled with the “Dublin” extensions. You can deploy your services to IIS/WAS using whatever technique you normally use for Web applications (you can deploy it directly from Visual Studio if your environment allows that). You can also use Windows PowerShell cmdlets to automate these tasks. (These cmdlets allow you to build automated deployment scripts for your WCF and WF environments. If you want to try using any of these cmdlets, simply open Windows PowerShell on a Windows Application Server and type “help ” to learn how to get started with that particular command.) Once deployed, you can begin using IIS Manager to access the various “Dublin” extensions highlighted in Figure 8. Deploying Applications with “Dublin” Many environments do not allow developers to deploy services directly to their managed servers for security and isolation reasons. “Dublin” provides an alternate solution for deploying services through its application export/import features. You can package up WCF and WF applications for deployment on other servers by selecting the Application Export feature in IIS Manager. This will bring up a dialog that asks you to select a specific application to export. Once you’ve specified a location, pressing Export will generate a file package with a .zip extension containing all the WCF and WF code as well as all the metadata and configuration settings for a single application. This package can then Building a WCF Workflow Service for “Dublin” Visual Studio 2010 makes it really easy to build services that target the “Dublin” extensions through a new project template (see Figure 7). This project template gives you a web.config preconfigured with the “Dublin”-provided persistence provider and durable timer service. Once you’ve generated the project, Figure 8 The “Dublin” Extensions in the IIS Manager msdnmagazine.com January 2009 57 http://www.msdnmagazine.com

Table of Contents Feed for the Digital Edition of MSDN Magazine - January 2009

Toolbox CLR Inside Out Basic Instincts Cutting Edge Test Run First Look� Geneva Framework Silverlight Windows Mobile Service Station Security Briefs Extreme ASP.NET Foundations .NET Matters { End Bracket }

MSDN Magazine - January 2009

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