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MSBuild BeforeBuild步骤中的Nuget Update Packages.config

[英]Nuget Update Packages.config in MSBuild BeforeBuild Step

我一直在尝试编写MsBuild任务,以从Feed网址自动获取Nuget程序包,并自动更新packages.config以更新至最新版本。

 // ---- Download and install a package at a desired path ----
  var sourceUri = new Uri("FEED URL");

  // ---- Update the ‘packages.config’ file ----
  var packageReferenceFile = new PackageReferenceFile("../../packages.config");
  string packagesPath = "../../packages";
  IPackageRepository sourceRepository = PackageRepositoryFactory.Default.CreateRepository(sourceUri.ToString());
  PackageManager packageManager = new PackageManager(sourceRepository, packagesPath);

  foreach (var sourcePackage in sourceRepository.GetPackages().Where(x => x.IsLatestVersion))
  {
    if (!packageReferenceFile.EntryExists(sourcePackage.Id + " " + sourcePackage.Version, sourcePackage.Version))
    {
      var oldPackage = packageReferenceFile.GetPackageReferences().FirstOrDefault(x => x.Id.Contains(sourcePackage.Id));

      if (oldPackage != null)
      {
        packageReferenceFile.DeleteEntry(oldPackage.Id, oldPackage.Version);
      }

      packageManager.InstallPackage(sourcePackage.Id, SemanticVersion.Parse(sourcePackage.Version.ToFullString()));

      // Get the target framework of the current project to add --> targetframework="net452" attribute in the package.config file
      var currentTargetFw = Assembly.GetExecutingAssembly()
        .GetCustomAttributes(typeof(TargetFrameworkAttribute), false);
      var targetFrameworkAttribute = ((TargetFrameworkAttribute[]) currentTargetFw).FirstOrDefault();

      // Update the packages.config file    
      packageReferenceFile.AddEntry(sourcePackage.GetFullName(),
        SemanticVersion.Parse(sourcePackage.Version.ToFullString()), false,
        new FrameworkName(targetFrameworkAttribute.FrameworkName));
    }
  }

作为控制台应用程序,它运行良好,并且会自动正确读取文件并更新必要的参考。

当我尝试将其作为MsBuild任务运行时,我一直遇到错误。

  • 编译期间发生错误。 c:\\ Users \\ user \\ AppData \\ Local \\ Temp \\ dkkg20ya.0.cs(22,11):错误CS0246:找不到类型或名称空间名称'NuGet'(您是否缺少using指令或程序集引用?)
  • 无法从程序集“ C:\\ Program Files(x86)\\ Microsoft Visual Studio \\ 2017 \\ Enterprise \\ MSBuild \\ 15.0 \\ Bin \\ Microsoft.Build.Tasks.v15.0.dll”中加载任务工厂“ CodeTaskFactory”。 任务工厂必须为“ TaskType”属性返回一个值。

这是我放入csproj中的代码(也移至nuget.targets进行测试)

<Target Name="BeforeBeforeBuild" BeforeTargets="BeforeBuild">
    <UpdateNugetFiles />
  </Target>
<UsingTask TaskName="UpdateNugetFiles" TaskFactory="CodeTaskFactory" AssemblyFile="$(MSBuildToolsPath)\Microsoft.Build.Tasks.v$(MSBuildToolsVersion).dll" > 
    <Task>
        <Reference Include="System.Core" />
        <Using Namespace="System" />
        <Using Namespace="System.Linq" />
        <Using Namespace="System.Reflection" />
        <Using Namespace="System.Runtime.Versioning" />
        <Using Namespace="NuGet" />
        <Code Type="Fragment" Language="cs">
            <![CDATA[
            try {
                // ---- Download and install a package at a desired path ----
  var sourceUri = new Uri("FEED URL");

  // ---- Update the ‘packages.config’ file ----
  var packageReferenceFile = new PackageReferenceFile("../../packages.config");
  string packagesPath = "../../packages";
  IPackageRepository sourceRepository = PackageRepositoryFactory.Default.CreateRepository(sourceUri.ToString());
  PackageManager packageManager = new PackageManager(sourceRepository, packagesPath);

  foreach (var sourcePackage in sourceRepository.GetPackages().Where(x => x.IsLatestVersion))
  {
    if (!packageReferenceFile.EntryExists(sourcePackage.Id + " " + sourcePackage.Version, sourcePackage.Version))
    {
      var oldPackage = packageReferenceFile.GetPackageReferences().FirstOrDefault(x => x.Id.Contains(sourcePackage.Id));

      if (oldPackage != null)
      {
        packageReferenceFile.DeleteEntry(oldPackage.Id, oldPackage.Version);
      }

      packageManager.InstallPackage(sourcePackage.Id, SemanticVersion.Parse(sourcePackage.Version.ToFullString()));

      // Get the target framework of the current project to add targetframework="net452" attribute in the package.config file
      currentTargetFw = Assembly.GetExecutingAssembly()
        .GetCustomAttributes(typeof(TargetFrameworkAttribute), false);
      var targetFrameworkAttribute = ((TargetFrameworkAttribute[]) currentTargetFw).FirstOrDefault();

      // Update the packages.config file    
      packageReferenceFile.AddEntry(sourcePackage.GetFullName(),
        SemanticVersion.Parse(sourcePackage.Version.ToFullString()), false,
        new FrameworkName(targetFrameworkAttribute.FrameworkName));
    }
  }

                return true;
            }
            catch (Exception ex) {
                Log.LogErrorFromException(ex);
                return false;
            }
        ]]>
        </Code>
    </Task>
</UsingTask>

关于如何解决此问题的任何想法似乎都找不到解决方案。 总体而言,在CI构建过程中执行此操作的第一步是使nuget保持最新状态。

谢谢蒂姆

刚打电话

nuget restore "your_solution.sln"

不要通过用C#代码编写轮子来重新发明轮子。

MSBuild BeforeBuild步骤中的Nuget Update Packages.config

不知道您的代码问题来自哪里。 使用NuGet.exe还原和更新解决方案,而不是尝试使用C#代码,可能会更简单。

因此,您可以在MSBuild BeforeBuild步骤中添加以下nuget命令行

  <Target Name="BeforeBeforeBuild" BeforeTargets="BeforeBuild">
    <Exec Command="$(YourNuGetPath)\nuget.exe restore &quot;$(YouSolutionPath)\YourSolution.sln&quot; -PackagesDirectory &quot;$(YouPackagePath)\packages&quot;" />
    <Exec Command="$(YourNuGetPath)\nuget.exe update &quot;$(YouSolutionPath)\YourSolution.sln&quot;" />
  </Target>

注意:如果使用的是Visual Studio,Visual Studio将在构建过程中自动检查丢失的软件包并还原它们: Package Restore

希望这可以帮助。

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