TFS Build vs local build - tfs

I really don't understand the meaning of tfs build although MSDN provides many definitions.
For example, I have an asp.net project. If I passed the local build on my local machine and I checked in the code. Everything is fine.
I used to copy(publish) the code to the server, that's it.
Why we need tfs build? What is different between tfs build and local build. You might to say, there are build history that can be reverted to an old one. But I think that since code was versioned, we can checked it out and rebuild in the local machine and republish the project to the server.

When I was using TFS, I could run local builds on my local machine. And then when checking in code, TFS would automatically perform a build on the build server (this is specified via a build definition). In that case, the build server was located on the machine which housed the master copy of the TFS source repository.
It's not enough for each developer to build locally as they may not have the latest code. I think the point of a TFS build is that it will run a build on the build server which has all the latest code. I think the idea is that if the build is successful on the build server, then it's deemed safe to check in the code.
That's how I understood it anyway. It's useful if there are multiple developers working on a project. If there is only one developer on one machine, a separate build may not be necessary.
Did that answer your question or did I misunderstand?

The answer of CiaranG is indeed one way to look at it.
Also the TF Build server has the possibility to build your code with signed 3rd party DLL's and put everything in a place as it is every time a new version of your software. This can be then useful for testers that need to test your software and don't need development tools.

Besides CiaranG's description of the Continuous Integration benefits, there is also the security and cleanliness. Allowing production code to be built off of developer machines where there is a chance for virus/malware may be present and the configuration is not known/documented is just poor policy. By building it off a protected server, from which no surfing is ever done, you are ensuring a safe, clean, reproducible environment which adds professionalism to your code deployments. TFS also adds in reporting build metrics over time, accountability, and archiving.

Related

Commit file back to repository from build server in Visual Studio Team Services

I'm currently setting up continuous integration using TFS/Visual Studio Team Services (was VS Online), and I'm using the Team Foundation Build 2015 tasks. So not the XAML builds.
I'm using it to build a Xamarin Android project, but that's pretty irreverent I guess,
The process should be like this:
After a check-in:
TFS should download the sources
TFS should increment the version number within AndroidManifest.xml
I've managed to do this by making a PowerShell script for this.
After the AndroidManifest.xml file is modified, it should be committed back into the TFS repository
Then the rest, build deploy into hockeyapp etc
The first steps are all configured, but I'm struggling with the commit part. How do I get TFS to commit the file? I don't really see any task suitable for it. I've tried using the Copy and Publish Build Artifacts Utility - But that did not seem to work, and I'm not even sure if that's the right utility
I'm using the default hosted build agent btw. Any help would be appreciated
Warning
I do want to point out that checking in changes as part of the build can lead to some features of VSTS/TFS not working. Association of work items to the checkin, sources and symbol generation, tractability from changes to build to release and integration with Test Manager, remote debugging, will likely not yield the expected results because the Changeset/commit recorded in te build may not match the actual sources. This may lead to unexpected funny behavior.
Also, if any new changes have already been committed/checked-in after the build has started, the version number may be updated in Source Control for code that was not actually released under that version.
So: First of all, it's considered a bad practice to change the sources from the build process.
Alternatives
There are better ways of doing it, one is to use the build version (Build_BuildNumber or Build_BuildID variables). Alternatively you an use a task like GitVersion to generate the semantic version based on the branch and tag in your git repository. That way your build will generate the correct version number and will increment the revision in case the same sources are built multiple times.
I understand, but I still want to check in my code as part of the build
If these things don't work for you and you still want to check in the changes as part of the build, you can either use the TFVC Build Tasks if you're using TFVC or use the Git Build Tools to add the remote to the local repository and then use the git commandline tools to commit and push the changes back to the repository.
These extensions require TFS Update 2 to install. But you can push the individual build tasks using the tfx commandlien tool. For the TFVC tasks the process is explained here.
On mac
On the mac it's going to be harder since you're using TFVC. My TFVC tasks leverage the TFS Client Object Model and Powershell to communicate to the TFS Server. The tf.exe tool doesn't even work on windows when you're in the context of a build, which is why I need to call into the VersionControlServer object directly. Given I'm dependent on these technologies, the tasks won't run on a Mac or Linux agent.
You could try to see whether the Team explorer Everywhere X-platform commandline works from the build agent (using a shell script). I have no way to test this on an actual Mac.
Given the cross platform nature of your project I'd recommend to move to Git, it integrates into XCode and Android Studio, making it easier to do a native UI or build on top of native libraries.
Alternative 2
You could setup a build which does the required changes to the code and then checks in the modified code. Then have a (CI) build run the Android and the Mac builds using the modified code.

Set up Team Foundation Server Build service to do automatic builds and testing

Our plan is to use Team Foundation Build service to do automatic builds, then use the testing facility to automatically perform testing on the build server then release that build onto the application server.
So far we have
Team Foundation Server with TF Build Controller configured
Build server with win2012, Visual Studio 2013 and Build agent configured.
SQL Server with SQL 2013 installed
Application Server with Win2012 and .netframework installed
My question is what do I need to do to set up automatic builds, and to execute the unit test harness once compilation is successful.
Also the deployment target machine will initially be DEV, however we would like to quickly build for test env and prod etc.
This is what I got so far.
Build Controller (Already set up I believe)
Build Agent (Already installed on build server)
Build Process Template (Do I need to do anything with this. Is this what controls the whole lot)
Team Build Definition (I had a look at this, and it seems to use the build process template)
Drop Folder (I am assuming this is where the executables will be dropped into).
At the moment I have bits and pieces of info, what I would like to know is how this whole thing is hanging together. From the moment the developer wants to do the build to the moment that exe is placed into the DEVAPPSERV (Development application server).
Is anyone able to point me in the right direction or give a summary of what I need to make this happen?
Many thanks,
Dalibor
Install TFS Server (TFS Disk) Create a Team Project Collection and any desired Projects
Install TFS Controller + Agents onto a dedicated machine (TFS Disk) Configure only the build options if on a different machine to the TFS Server
Configure Build Controller to connect to a Specific Team Collection on your TFS Server
Install VS Premium or higher on build machine, if you want code coverage results for your tests
Add some code to TFS Source Control
Create a Build Definition using the default template.
Configure the build definition.
Set the working folder for the build, include only what you need as this will speed up the process
Point the definition to your .sln or proj file.
Ensure testing is enabled and that your test assembly names will match the regex used to identify test dll's i.e. name your test assemblies with the word test.
Set the trigger to be CI or what ever flavour of build you require i.e. gated build
Save the build definition
Trigger a manual build and debug any issues
you should have the basics done and a repeatable build created.
That should cover the basics, you may want to customise the build template (see Ewald Hoffman's guide for tips), you may want to narrow down your code coverage (look for runsettings file info).
If you follow these steps you should be able to get a basic build created and running from these, if you hit any issues you can come back and ask specific questions about a particular area
In order to do automatic builds you should check the CI build option ( under the trigger build option ) and third party automated testing can be run by executed by a post build script.
See the following TFS article about post build scripts.
http://msdn.microsoft.com/en-us/library/dn376353.aspx

TFS build server backup options

At our office we have Team Foundation Build machine (visual studio 2010) that we are looking to move to either a new physical server or possibly a VM. Although I have found a lot of information regarding the backup of Team Foundation Server I have not been able to locate much information on backing up a Team Foundation build machine so we can restore it on another machine/VM.
Any advice or a link would be most appreciated. Thanks.
There is no TFS specific data stored on the build machine, so from a TFS perspective there is nothing to backup/restore.
To setup a new build machine, just install the TFS build software, and point it to your TFS Collection.
The thing that will take time to reconfigure is any software or SDK's you may have installed on your build server that are required by your build. This has nothing to do with TFS, and is difficult to backup and restore to a different machine.
One option is to use a P2V tool to convert your physical machine to a VM, then you can move it to any host.
Otherwise, you are probably looking at just rebuilding a build server and redoing the installs necessary. This time be sure to do it in a VM so you can easily move it around between hardware in the future.
I prefer to avoid the Magical Build Machine Anti-Pattern and focus on writing the 'build the build server' scripts. Even if it's just a simple batch file, have a way of starting from basic windows and build your environment. Whenever you add a dependency, update it. This also helps you scale out. (At a previous company we had over 75 build servers.)

Using TFS build definitions on a local machine

I have created a lightly customized TFS build process template and also appropriate TFS build definition. It builds fine on the TFS build server.
Is there any way I can allow developers to reuse the same build process XAML and definition to do full builds on their local machines? Maybe there is some utility which can be run with TFS build process XAML files?
I really would like to avoid maintaining a separate copy of the build script for full local rebuilds.
The build templates can only be run by the TFS build service. Without installing that on each developers machine, that might not be the best idea.
An alternative is to setup a share on the developments machine and grant access to the TFS Build account (the one that TFSBuildServiceHost.exe runs on the server as). Then the developer can Queue a build and get the Server to Drop the files onto their machine.
The downside to this is you need a lot of builds to be run on the Agents.

MSBuild or TFSBuild Conditional for One Project?

I have a long-time-to-build (setup) project in a Visual Studio 2010 Solution. It is set not to build in the Solution configuration. That way, when a developer builds locally they are not burdened with waiting for the setup to compile in Visual Studio.
However, I am looking for a way to change the configuration in tfsbuild or msbuild files so whenever things are built on the server, the setup project is always built, regardless of what the setting might be when a developer checks in their solution. TFS 2008 is the source control system but just a plain Server 2008 (with devenv fully installed) is the build server.
All clues appreciated.
Thanks.
I would suggest creating a new configuration in your solution, named e.g. Release_Setup, that way you have seperate configurations for developer and setup build (note that developers can choose that config and build everything locally if they so choose, which is quite nice when all Build agents are busy and you want to check that everything's fine).
In Solution Properties->Configuration Properties->Configuration you can even tell it to build the normal Release Configuration and still choose which projects to build and which to exclude.
Hope this helps. I haven't actually tested this, so please try it and comment back if there are any problems or this doesn't solve your specific question.

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