I was looking at integrating a class library that uses service stack with an existing web application. I added the class library and its reference dlls in the bin folder for the web application and entries in the web.config file for dependency injection but I am getting an error as below. Please let me know the best way to approach this issue.
error: ServiceStack: AppHost does not exist or has not been initialized. Make sure you have created an AppHost and started it with 'new AppHost().Init();' in your Global.asax Application_Start() or alternative Application StartUp
Go through Creating your first web service from scratch to walk through how to add ServiceStack to an empty ASP.NET Web Application.
AppHost is your own class that you create that inherits AppHostBase.
You should get the .dlls from the ServiceStack NuGet package, but otherwise you never want to put dlls in /bin folder yourself, if you instead want to reference a copy of the ServiceStack dlls they should be in an external folder like /lib, when VS.NET builds your project it will automatically copy it to the /bin folder.
I would still recommend using the NuGet packages, but if you want to reference .dlls have a look at the Chat demo which references copy of ServiceStack dlls in custom /lib folder, it also has the minimal libs required for a ServiceStack + Razor ASP.NET Web Application.
Did you try to do what the error description suggested? Go into global.asax.cs, and add:
new AppHost().Init();
into the Application_Start() method.
Related
I have an Asp.Net Web Api solution with 3 class library projects that are referenced from the main project. I have published the main project to another server on site - MySite/Main. I am unable to figure out how to publish the class library projects to location like so -
MySite/CL1
MySite/CL2
MySite/CL3
This shall enable the main project to reference them properly. How should I go about it?
When you build your web project all the referenced libraries are being copied to the bin folder (check for yourself). This folder is also being published.
If you use IIS it will automatically look for assemblies in the bin folder so you shouldn't worry about making the folder structure to be the same as in your local environment.
So the only thing you should worry about is referencing libraries properly.
The website project is the only one which should be published. You don't need to publish class libraries (I don't think you can do this using Visual Studio)
I have an existing project using RIAServices with Entity Framework. The project builds correctly and generates the AmsiWeb.g.cs file with all the context classes for my services.
I am converting my designer based entities and ObjectContext with Code First entities and DbContext. I installed the RIAServices.EntityFramework NuGet package to the web application that contains my services. However, now when I build the AmsiWeb.g.cs file only contains the WebContext class. It doesn't contain any generated services.
I have only at this point converted a single EDMX model to Code First and DbContext and made the requisite changes to the services that use that model to inherit from DbDomainService.
I am using EF 5.0... not sure if that matters cause I'm not sure how adding a DLL to the AmsiWeb application project would break code generation.
What would cause this to no longer work and how can I fix it?
Maybe it's a problem within the msbuild task that generates the proxy code (I mean the *.g.cs file). Probably it's looking for the wrong version of a entity framework. Have a look at this blog post http://mcasamento.blogspot.it/2012/10/entity-framework-5-code-first-and-wcf.html in the final part I wrote an assembly redirect statement that did the trick
It turns out that their needs to be a redirect for Entity Framework 5.0 (4.4.0.0 since I was using .Net 4.0) in the web.config. But, since my RIA Services were in a web application project that was not my root project the code wasn't generating.
Once I added the redirect to the web.config of the web application with the RIA services in it, the context code was correctly generated.
I am learning how ServiceStack works with the help of self-hosting projects.
Self-hosting projects are much easier to debug and understand, since no magic happens inside IIS.
I followed these steps, read http://www.servicestack.net/mythz_blog/?p=785 and applied them backwards.
It worked fine for Docs, but not for the SocialBootstrapApi. The code in Application_Start() from Global.asax is the problem I think
Steps for ServiceStack Docs
Download the ServiceStack Docs sample project
Create a new console project (.Net 3.5 since Docs is still 3.5)
Copy all files from old web project except web.config. (I first used drag and drop, but that only moved the file, it didn't update the .csproj file, so I had to use an editor to copy some ItemGroup sections.)
Move AppHost into a separate class file, changed to inherit from AppHostHttpListenerBase
Copie the Programs.cs file from the RazorRockstars project
Change the baseUrl: var baseUrl = "http://localhost:2001/"; // ConfigUtils.GetAppSetting("WebHostUrl");
Copy the app.config file from RazorRockstars project (but this wasn't needed)
Change output path for console project to .\ because otherwise PageManager.Init got the wrong path and most files were not found
When you done this, download the complete ServiceStack source code and recompile in Debug mode, replace all ServiceStack references in the Docs project by the newly compiled things. Now, you can easily step through all ServiceStack-code, set breakpoints etc, and understand what is happening and when. Console projects also have some other advantages, they start faster, Edit-and-Continue works more often.
For SocialBootstrapApi I did the same except/and
Renamed web.config to app.config
Commented away // [assembly: WebActivator.PreApplicationStartMethod(typeof(SocialBootstrapApi.AppHost), "Start")]
Now, the normal ServiceStack part of the project works, although the url is without the initial /api/
Tried moving Application_Start() from Global.asax to AppHost.Configure ==>> Refuses to start
ASP.NET MVC can't be hosted in a self-hosted HttpListener (since it's coupled to ASP.NET), but ServiceStack does support hosting it's Razor and Markdown view engines inside a self-hosted HttpListener app.
The Razor Rockstars website is a show case website of ServiceStack's Razor and Markdown view engine support. razor-console.servicestack.net is the same website hosted in a HttpListener self-host. The source code of RazorRockstars is on GitHub with the RazorRockstars.SelfHost example contains the source code for razor-console. The one thing you have to remember with self-hosted websites is that the Razor view pages Build Action in VS.NET needs to be set to Copy if Newer so the views are copied in the /bin directory so they can be found by ServiceStack at runtime.
Working on a SharePoint project I'm trying to use Unity as a dependency injection container.
My first idea to get this container running is using the global.asax as described in the best practices by P&P:
http://webclientguidance.codeplex.com/releases/view/17134#DownloadId=43305
In these best practices they tell you to manually edit the global.asax file to make it inherit SPUnityHttpApplication.
<%# Application Language="C#" Inherits="Unity.SharePoint.SPUnityHttpApplication" %>
Manually editing this file is not an option in enterprise environments since we have multiple environments (DTAP) and all of them have multiple frontend servers that would need manual steps.
I can't find any way to deploy a global.asax file by using a feature or wsp or anything because the global.asax is located in the web application root and sharepoint deploys other files to the /14 hive folder so you can't acces the web application root directory.
Alternatives i've looked into is the SharePointServiceLocator. this build in functionality does almost what i want. but it can only resolve classes that have a default constructor. this way i can't chain resolve all my implementations by using constructor injection. I found a post how to change the service locator to make use of unity but this doesn't seem to work properly if you read the comments.
My problem can be fixed by fixing 1 of these 2 main problems:
Don't arrange unity in the global.asax, but then where and how?
Deploy the global.asax in sharepoint? possible?
The global.asax doesn't seem to be the best solution to do this because of the deployment issues described in the question.
A viable solution is implementing this in a httpmodule
The init method can be used to wire everything up since this is called when the sharepoint application starts.
the httpmodule can be added in the web.config by a feature receiver
This way there is no need to do tricks with the global.asax that is located in a directory you can't deploy to with a feature and you have all the functionality and correct time to instantiate the DI container.
It may not be ideal, but you could look at using a feature receiver and write code to edit the existing files directly.
Can T4 templates be used in a web site project?
Or more specifically, can Subsonic be used in a web site project?
I can run the .tt files in a web application project but it does not nothing on a web site project. I guess they need a solution/project environment in order to run?
The easiest way to do this is to add a class library project to your solution and then have SubSonic do it's generation inside that. You can then reference the class library from your website project.
Edit To clarify you'll need an app.config in the library project with your connectionstring for gernation and you'll need a connectionstring in your web.config for runtime database connection
I believe they need a project to run. I blame it on microsoft.... so perhaps adding a lib project would work. Don't know if the runtime connection string should go in the web.config or the dll's config, though.