aspnet_compiler in Azure starup task

Question

Does anyone know if its possible to call aspnet_compiler from an azure role startup task to force a precompilation inplace. (And if so as a foregroudn/background or simple task?)

Perhaps something like: %windir%\Microsoft.NET\Framework64\v4.0.30319\aspnet_precompile.exe -v / -p "F:\siteroot\0"

Or are there any better ways to accomplish this?

Your command is correct except for typo, should be sitesroot instead of siteroots. — zbarrier, Jan 01 '16 at 20:54
Should also be aspnet_compiler.exe (instead of aspnet_precompile) — Mister Cook, Sep 25 '16 at 15:13

score 2 · Accepted Answer · edited May 23 '17 at 12:32

2

Yes, that should work once you figure out the right path to the compiler although I haven't tried this specific approach.

An alternative I've tried is to use ClientBuildManager.PrecompileApplication as described in this answer. I tried calling that from inside OnStart() but you can compile C# code as a .NET assembly and use that from PowerShell or just call .NET primitives from PowerShell as described here and that way call it from the startup task.

edited May 23 '17 at 12:32

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answered Apr 09 '13 at 12:48

sharptooth

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The ClientBuildManager.PrecompileApplication sound like a nice way to do it. When calling it from on start what constructor args did you specify for the ClientBuildManager? I am not quite sure how I should get a hold of the corrects paths. – jmw Apr 09 '13 at 14:01
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@JWendel: You can use `Microsoft.Web.Administration.ServerManager`, enumerate all `Sites`, for each of them enumerate all `Applications`, for each of them - all `VirtualDirectories` and each of those has `Path` and `PhysicalPath` - those two you can pass into `ClientBuildManager` construtor. – sharptooth Apr 09 '13 at 14:18
Great thanks! Going to try it out. For others looking for the Microsoft.Web.Administration its available as a NuGet package - http://nuget.org/packages/Microsoft.Web.Administration/. – jmw Apr 09 '13 at 14:26

score 0 · Answer 2 · answered Sep 25 '16 at 15:19

A start-up task is possible, but one problem with that is that the siteroot path is hardcoded and that can change. Instead add the following to the RoleEntryPoint OnStart method:

 using (var serverManager = new ServerManager())
        {
            string siteName = RoleEnvironment.CurrentRoleInstance.Id + "_" + "Web";
            var siteId = serverManager.Sites[siteName].Id;
            var appVirtualDir = $"/LM/W3SVC/{siteId}/ROOT";  // Do not end this with a trailing /

            var clientBuildManager = new ClientBuildManager(appVirtualDir, null, null,
                                        new ClientBuildManagerParameter
                                        {
                                            PrecompilationFlags = PrecompilationFlags.Default,
                                        });

            clientBuildManager.PrecompileApplication();
        }

aspnet_compiler in Azure starup task

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