Thursday, May 26, 2016

How to build .Net Core project with TFS vNext build

So, we created a wonderful .Net Core solution, it looking forward to build it with VSTS or TFS on-premises. And of course we want to use vNext build system :)

First of all - the Hosted agent in Azure CAN NOT build .Net Core projects yet. We will therefore need to use on-premises agent. If you need to know how to configure a vNext build agent - check this manual. Also Martin has a very detailed step-by-step post here.

After build agent is on, make sure you have Visual Studio 2015 Update 2 (ot upgrade to it) and install  .Net Core SDK from here. Now we are all set!

If you just go on the easiest way and do - get the code, build:

it will not work. Reason is that package management is all different in .Net Core, and nuget restore doesn't know how to deal with your .Net Core project packages. So you get:
The dependency Ix-Async >= 1.2.5 could not be resolved.
The dependency Microsoft.AspNetCore.Antiforgery >= 1.0.0-rc2-final could not be resolved.
The dependency Microsoft.AspNetCore.Authorization >= 1.0.0-rc2-final could not be resolved.
and so on. Packages are listet in your project.json file. So unless you restore them with .Net CLI tool prior to build, it ain't work.

Therefore create a packagesRestore.ps1 powershell script like this:
Get-ChildItem -Path $PSScriptRoot\MyWebApp.NetCore -Filter project.json -Recurse | ForEach-Object { & dotnet restore $_.FullName 2>1 }
and save it next next to your .sln file. Check in. 
Pay attention that my project name is MyWebApp.NetCore - so the project.json file is under corresponding directory. 

Now, in you vNext build definition add a new execute powershell before Build solution:

and that's it! Now we can build .Net Core app with VSTS on our on-premises Build agent :)

Monday, May 23, 2016

How to use Microsoft R Server (Revolution R) in Visual Studio

First, you will need to install R Tools for Visual Studio followng instructions here. Then Microsoft R Server - the how-to is here.

After R Tools for Visual Studio are installed, open Visual Studio. You will see a new top menu "R Tools" available:

Click R Tools -> Options. Visual Studio options will open a tab for R settings:
Modify R Engine path to where you have your MRO-for-RRE installation (default is C:\Program Files\Microsoft\MRO-for-RRE\8.0\R-3.2.2)

Restart Visual Studio and enjoy using R server from your favourite IDE :)

Friday, May 13, 2016

Installing Microsoft R Server (Revolution R) on Windows

As we know, Microsoft bought Revolutionary R, and now it is available as a part of your MSDN ubscription. This is wonderfull! Installation though, is not still on a level with other Microsoft products, therefore - a short how-to install it post.

1. Download Microsoft R Server from msdn subscribers downloads page:
Thats's the one:

2. Download prerequisite - MRO 3.2.2 for RRE 8.0.0 from here:
as that one will not be installed automatically along with other prerequisites.

3. Install MRO for RRE 8.0.0 by running MRO-3.2.2-for-RRE-8.0.0-Windows.exe
4. Unpack and run Revolution-R-Enterprise-8.0.0-Windows.exe

That's it. Some notes:

1. Yes, I had MRO 3.2.3 and MRO 3.2.4 installed, but Microsoft R server requires exactly MRO-for-RRE.
2. It will install some old components dating back to Visual Studio 2008,