Semantic Versioning with GitVersion - Take 2
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On Thursday 22nd October 2015, I presented a talk at Aberdeen Developers .Net User Group entitled "Semantic Versioning with GitVersion"
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Semantic Versioning with GitVersion - Take 2
- 1. Semantic Versioning with GitVersion Gary Ewan Park Email: gep13@gep13.co.uk Twitter: @gep13 Web: http://www.gep13.co.uk
- 2. Agenda • What is Semantic Versioning? • What is GitVersion? • Why would I want to use GitVersion? • How do I get started with GitVersion? • Demo
- 4. A Definition… “…simple set of rules and requirements that dictate how version numbers are assigned and incremented. These rules are based on but not necessarily limited to pre-existing widespread common practices in use in both closed and open-source software.” Reference http://semver.org
- 5. The Rules Given a version number MAJOR.MINOR.PATCH, increment the: • MAJOR version when you make incompatible API changes • MINOR version when you add functionality in a backwards- compatible manner • PATCH version when you make backwards-compatible bug fixes Additional labels for pre-release and build metadata are available as extensions to the MAJOR.MINOR.PATCH format.
- 6. Example Semantic Version Numbers • 0.1.0 • 1.0.0 • 0.3.13 • 0.2.0-unstable3 • 0.2.0-unstable.3+Branch.develop.Sha.e6eb071cd30974b80d7e237b85e7729a1d791e1e
- 8. A Definition… “GitVersion is a tool to help you achieve Semantic Versioning on your project.” Reference http://gitversion.readthedocs.org/en/latest/ https://github.com/GitTools/GitVersion
- 9. Why would I want to use GitVersion?
- 11. How do I get started with GitVersion?
- 12. Simples! • Install from Chocolatey: • Use the NuGet Command Line Package • Use the NuGet MsBuild Task • Use the Ruby Gem
- 15. Demo
- 16. Questions? Feel free to get in touch Email: gep13@gep13.co.uk Twitter: @gep13 Web: http://www.gep13.co.uk
- 17. Resources • GitVersion Documentation o http://gitversion.readthedocs.org/en/latest/ • .Net Rocks Episode with Jake Ginnivan o https://www.dotnetrocks.com/default.aspx?showNum=1178 • Git Branching Strategies o https://www.atlassian.com/git/tutorials/comparing-workflows • GitFlow o http://nvie.com/posts/a-successful-git-branching-model/
Notes de l'éditeur
- The Semantic Versioning specification is authored by Tom Preston-Werner, inventor of Gravatars and co-founder of GitHub. Tries to solve two problems, Version Lock and Version promiscuity. SemVer introduces conventions about breaking changes into our version numbers so we can safely upgrade dependencies without fear of unexpected breaking changes while still allowing us to upgrade downstream libraries to get new features and bug fixes.
- {major} = Only incremented if the release has breaking changes (includes bug fixes which have breaking behavioural changes {minor} = Incremented if the release has new non-breaking features {patch} = Incremented if the release only contains non-breaking bug fixes {tag} = Optional -{tag} denotes a pre-release of the version preceeding {buildmetadata} = Options +{buildmetadata} contains additional information about the version, but DOES NOT AFFECT the semantic version preceding it.
- - It actually started out as two tools, one by Particular and another by Jake Ginnivan - They decided to combine their efforts under the ParticularLabs Open Source Repository - Ownership of GitVersion has since passed to the GitTools organisation which is creating a number of OSS tools, centred around Git GitReleaseNotes, GitReleaseManager, GitLink, etc - Uses LibGit2, same library as used by GitHub For Desktop, and the Visual Studio Git Integration
- Version.txt - Results in multiple commits to repository that aren’t required - Difficult to between branches CI Build - Tied into one CI System AssemblyInfo - Very manual process - Someone has to remember to do it Unknown - Less said about this, the better
- I have never used the Ruby Gem, but as I understand it, it is just a wrapper around the exe. There is also a GitVersion DLL which can be consumed in your own applications, but it should be noted that there is not currently a public defined API, so care should be taken.
- Not all Build Servers clone all branches, necessary for asserting the version number, which means GitVersion can fail. This will make GitVersion Variables: - immediately available to other build steps - set the build version number - rationalise the branches, and ensure all required branches are cloned, in order to assert version number - automatically detect that it is running on a build server