Organize your chickens: NuGet for the enterprise

Organize Your Chickens - NuGet for the EnterpriseMaarten Balliauw@maartenballiauwRealDolmen

Organize Your Chickens NuGet for the Enterprise

Who am I?• Maarten Balliauw• Antwerp, Belgium• www.realdolmen.com• Focus on web – ASP.NET, ASP.NET MVC, PHP, Azure, … – MVP Windows Azure (formerly ASP.NET)• http://blog.maartenballiauw.be• @maartenballiauw• Author: Pro NuGet - http://amzn.to/pronuget

Agenda• NuGet• Scenarios – Host your own NuGet repository Chickens?! – Continuous Package Integration – Abusing NuGet – NuGet Inception• Conclusion

Welcome to Dependency Hell frustration“A term for the of software users who haveinstalled software packages which have dependencies onspecific versions of other software packages.” (Wikipedia)

Cause and Effect• Reinventing the wheel – We don’t need that dependency – “If they can do it, we can do it, but better”  What happened to reuse of components?• Marketing-Driven Versioning – People are waiting for v2 to buy – Let’s call it v4 Platform Update SP3 November Edition KB2348063 RTW Refresh  We lost ownership of AssemblyVersion ?

Package Management• NuGet to the Rescue! “NuGet is a Visual Studio extension that makes it easy to install and update open source libraries and tools in Visual Studio.”• Simple concept – Find Packages – (Re)Use Packages – Produce Packages

DEMOFinding & consuming a NuGet package

DEMOpublishing a NuGet packageCreating &

Semantic Versioning• Think about your versioning! (semver.org) Major Breaking changes Minor Backwards compatible API additions/changes Patch Bugfixes not affecting the API – Always specify lowerbound – Use a version range (lowerbound + upperbound) when versioning of package you depend on is messed up

Hosting a repository

Hosting your own repository• NuGet = public feed – Privacy – Intellectual property• NuGet maintained by package authors – Author removes v1.0.45 and you depend on it

Solutions• Folder / File share• NuGet.Server package• NuGet Gallery (or Orchard Gallery)• MyGet

DEMONuGet.Server

NuGet.Server limitations• Only 1 feed per installation• No UI – up to you to build it• No granular security – only 1 API-key for entire feed• Conclusion: requires you to develop if you want something more useful

Meet MyGet• www.myget.org• NaaS – Register and off you go!• Supports Enterprise scenarios – Granular security – Package mirroring – Proxying

DEMOMyGet

Continuous PackageIntegration

Typical source control...• Contains /References (if you are lucky) – ...and also Project/_bin_deployable_assemblies – ...and also /References/old – ...and also /..././../.././References• Usually references GAC-ed assemblies

Dependencies• Software has dependencies. Deal with it.• But are those YOUR intellectual property? – YOUR reason to build software? – YOUR product?• No. They are dependencies. And they don’t belong in source control.

Continuous Package Integration• Can I get rid of all these referenced assemblies duplicated all-over my source control system? Yes!• Do I need to install and maintain NuGet on all my build agents? No!

DEMOPackage Restore

3rd parties don’t belong in your VCS• Replace them with NuGet packages• Do commit packagesrepositories.config file• Use Enable-PackageRestore

Problem!• NuGet feed is subject to change... – PackageSource msbuild property to the rescue (NuGet.settings.targets in $(SolutionDir).nuget folder)• Now what... – Host your own feed and mirror packages – Or use MyGet for that 

Organize your chickens• Feed structuring – Scoped by quality: Build, QA, Production, … – Scoped by audience: public, restricted access – Other: • Scoped by product version, milestone… • Scoped by target platform

Guidance• Publishing a package brings great responsibility – Breaking changes in your packages should be versioned accordingly! – Consumers might choose to no longer consume any packages you published

Guidance• Package Integration ≠ Integration Testing – CI builds reflect output of source control input – Same input always produces same output  Do not auto-update packages during automated builds

Abusing NuGet

Abusing NuGet?Change of perspective NuGet is a package manager NuGet is a protocol for distributing packages

NuGet as a Protocol

Automate deployments• Build results in .nupkg• Octopus deploys to its tentacles – Test tentacles – Staging tentacles – Production tentacles• www.octopusdeploy.com

Chocolatey• NuGet – developer library packages• Chocolatey – applications and tools packager – “yum” or “apt-get” for Windows• www.chocolatey.org

DEMOChocolatey

Build Continuous Test Delivery of the MyGet website Package using: Push  TeamCity  NuGet Release / Publish  MyGet Deploy  OctopusDEMO DeliveryContinuous

ConclusionDependencies & people are chickens Deal with them! NuGet can help Set up your own NuGet repository Continuous package integration NuGet is a package manager NuGet is a protocol

http://blog.maartenballiauw.be @maartenballiauw THANK YOU! http://amzn.to/pronuget or Install-Package ProNuGet#tdvs

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Organize your chickens: NuGet for the enterprise

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