Azure DevOps - 在构建管道运行期间，代理在本地下载文件的路径是什么？

Question

我们正在使用 Microsoft 托管代理来为我们的应用程序的自动化测试场景运行构建管道。我们想要实现的是，通过我们的自动化程序，下载文件（从无头 chrome 浏览器），然后导航到下载文件的路径并打开它。

如何在代理中找到下载文件的路径？

Answer 1

安装代理时，您指定工作目录。在管道任务中，您可以使用 $(Agent.BuildDirectory) 等变量准确了解该目录中文件的暂存位置。这可能不是您需要的确切位置，但我认为它的方向是正确的。

有关预定义变量的完整列表，请参见此处：https://docs.microsoft.com/en-us/azure/devops/pipelines/build/variables?view=azure-devops&tabs=yaml

Answer 2

您可以查看this document:

所以对于 Linux，它的默认位置是 /home/<username>/Downloads。

我在Microsoft hosted agent-window2019 中使用测试C# 代码（来自Daniel! 的提示）进行测试，例如：

        static void Main(string[] args)
        {
            string FILEURI = "https://www.nuget.org/api/v2/package/Cauldron.Newton/2.0.0";
            System.Diagnostics.Process prozess = new System.Diagnostics.Process();
            prozess.StartInfo.FileName = @"C:\Program Files (x86)\Google\Chrome\Application\chrome.exe";
            prozess.StartInfo.Arguments = "--download " + FILEURI;
            prozess.Start();
            Console.WriteLine("Test starts.");
        }

然后我使用dir c:\users\VssAdministrator\cauldron.newton.2.0.0.nupkg /s /b 之类的命令来查找下载文件的位置：cauldron.newton.2.0.0.nupkg。

然后我确认Chrome的默认下载位置还是C:/Users/{user}/Downloads，和使用自代理或者本地下载一样。 （运行 windows 托管代理时，VssAdministrator 是用户）

所以我认为 Linux 托管代理应该有类似的行为。您可以尝试从/home/<username>/Downloads 文件夹中找到您的文件。希望对您有所帮助。

Answer 3

从official doc link快速编译与构建Linux和Windows自托管代理的路径相关的预定义变量列表。

您正在寻找的是Agent.BuildDirectory 或Pipeline.Workspace。

预定义变量列表：

Variable type	Variable	Description	Example
Agent	Agent.BuildDirectory	The local path on the agent where all folders for a given build pipeline are created	D:\..\agent\_work\1
Agent	Agent.HomeDirectory	The directory the agent is installed into	C:\agent
Agent	Agent.TempDirectory	A temporary folder that is cleaned after each pipeline job	D:\..\agent\_work\_temp
Agent	Agent.ToolsDirectory	The directory used by tasks such as Node Tool Installer and Use Python Version to switch between multiple versions of a tool	D:\..\agent\_work\_tool
Agent	Agent.WorkFolder	The working directory for agent	c:\agent_work
Build	Build.SourcesDirectory	The local path on the agent where your source code files are downloaded.	c:\agent_work\1\s
Build	Build.ArtifactStagingDirectory	The local path on the agent where any artifacts are copied to before being pushed to their destination. A typical way to use this folder is to publish your build artifacts with the Copy files and Publish build artifacts tasks	c:\agent_work\1\a
Build	Build.StagingDirectory	The local path on the agent where any artifacts are copied to before being pushed to their destination.	c:\agent_work\1\a
Build	Build.BinariesDirectory	The local path on the agent you can use as an output folder for compiled binaries	c:\agent_work\1\b
Build	Build.Repository.LocalPath	The local path on the agent where your source code files are downloaded.	c:\agent_work\1\s
Build	Common.TestResultsDirectory	The local path on the agent where the test results are created.	c:\agent_work\1\TestResults
Pipeline	Pipeline.Workspace	The Workspace directory for a particular pipeline	/home/vsts/work/1
System	System.DefaultWorkingDirectory	The local path on the agent where your source code files are downloaded.	c:\agent_work\1\s