Add task to perform file inventory before and after each repo

build when a FileInventoryPath is passed to the build.  This inventories
the root/bin directory, the root/packages directory and the repo/src
directory plus a couple of key files.

Author: dseefeld

repos/dir.targets

@@ -11,6 +11,7 @@
   <UsingTask AssemblyFile="$(TasksBinDir)Microsoft.DotNet.SourceBuild.Tasks.dll" TaskName="WriteBuildOutputProps" />
   <UsingTask AssemblyFile="$(TasksBinDir)Microsoft.DotNet.SourceBuild.Tasks.dll" TaskName="WriteRestoreSourceProps" />
   <UsingTask AssemblyFile="$(TasksBinDir)Microsoft.DotNet.SourceBuild.Tasks.dll" TaskName="WriteVersionsFile" />
+  <UsingTask AssemblyFile="$(TasksBinDir)Microsoft.DotNet.SourceBuild.Tasks.dll" TaskName="WriteFileInventory" />
 
   <!--
     Central property to define that a repo doesn't implement any of the Repo API. If a repo adds an
@@ -50,6 +51,11 @@
     <RepoApiArgs>$(RepoApiArgs) /p:DotNetOutputBlobFeedDir=$(SourceBuiltBlobFeedDir)</RepoApiArgs>
   </PropertyGroup>
 
+  <PropertyGroup Condition="'$(FileInventoryPath)'!=''" >
+    <FileInventoryBeforePath>$(FileInventoryPath)$(RepositoryName)/before/</FileInventoryBeforePath>
+    <FileInventoryAfterPath>$(FileInventoryPath)$(RepositoryName)/after/</FileInventoryAfterPath>
+  </PropertyGroup>
+
   <Import Project="$(ProjectDirectory)dependencies.props"
           Condition="'$(DependencyVersionInputRepoApiImplemented)' != 'true' AND
                      Exists('$(ProjectDirectory)dependencies.props')" />
@@ -76,6 +82,30 @@
           WorkingDirectory="$(ProjectDirectory)" />
   </Target>
 
+  <Target Name="InventoryFilesBeforeBuild"
+          BeforeTargets="Build">
+
+    <WriteFileInventory SourcePath="$(BaseOutputPath)"
+                        OutputPath="$(FileInventoryBeforePath)binInventory.txt"
+                        Condition="'$(FileInventoryBeforePath)'!=''" />
+
+    <WriteFileInventory SourcePath="$(NUGET_PACKAGES)"
+                        OutputPath="$(FileInventoryBeforePath)packageInventory.txt"
+                        Condition="'$(FileInventoryBeforePath)'!=''" />
+
+    <WriteFileInventory SourcePath="$(ProjectDirectory)"
+                        OutputPath="$(FileInventoryBeforePath)repoSourceInventory.txt"
+                        Condition="'$(FileInventoryBeforePath)'!=''" />
+
+    <Copy SourceFiles="$(VersionFileLocation)"
+          DestinationFolder="$(FileInventoryBeforePath)"
+          Condition="Exists('$(VersionFileLocation)')" />
+
+    <Copy SourceFiles="$(PackageVersionPropsPath)"
+          DestinationFolder="$(FileInventoryBeforePath)"
+          Condition="Exists('$(PackageVersionPropsPath)')" />
+  </Target>
+
   <Target Name="UpdateNuGetConfig"
           BeforeTargets="Build"
           Condition="'$(NuGetConfigFile)' != ''">
@@ -173,6 +203,30 @@
                        Condition="'@(_BuiltPackages)'!=''" />
   </Target>
 
+  <Target Name="InventoryFilesAfterBuild"
+          AfterTargets="WriteVersions">
+
+    <WriteFileInventory SourcePath="$(BaseOutputPath)"
+                        OutputPath="$(FileInventoryAfterPath)binInventory.txt"
+                        Condition="'$(FileInventoryAfterPath)'!=''" />
+
+    <WriteFileInventory SourcePath="$(NUGET_PACKAGES)"
+                        OutputPath="$(FileInventoryAfterPath)packageInventory.txt"
+                        Condition="'$(FileInventoryAfterPath)'!=''" />
+
+    <WriteFileInventory SourcePath="$(ProjectDirectory)"
+                        OutputPath="$(FileInventoryAfterPath)repoSourceInventory.txt"
+                        Condition="'$(FileInventoryAfterPath)'!=''" />
+
+    <Copy SourceFiles="$(VersionFileLocation)"
+          DestinationFolder="$(FileInventoryAfterPath)"
+          Condition="Exists('$(VersionFileLocation)')" />
+
+    <Copy SourceFiles="$(PackageVersionPropsPath)"
+          DestinationFolder="$(FileInventoryAfterPath)"
+          Condition="Exists('$(PackageVersionPropsPath)')" />
+  </Target>
+
   <Target Name="Clean" Condition="'$(CleanCommand)' != ''" >
     <Exec Command="$(CleanCommand) $(RedirectRepoOutputToLog)" WorkingDirectory="$(ProjectDirectory)" EnvironmentVariables="@(EnvironmentVariables)" />
   </Target>

tools-local/tasks/Microsoft.DotNet.SourceBuild.Tasks/WriteFileInventory.cs

@@ -0,0 +1,50 @@
+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+// See the LICENSE file in the project root for more information.
+
+using System;
+using System.Collections.Generic;
+using System.IO;
+using System.Text;
+using Microsoft.Build.Framework;
+using Microsoft.Build.Utilities;
+using NuGet.Packaging;
+using NuGet.Packaging.Core;
+
+namespace Microsoft.DotNet.Build.Tasks
+{
+    public class WriteFileInventory : Task
+    {
+        [Required]
+        public string SourcePath { get; set; }
+
+        [Required]
+        public string OutputPath { get; set; }
+
+        public override bool Execute()
+        {
+            List<string> files = new List<string>();
+            foreach (string file in Directory.EnumerateFiles(SourcePath, "*", SearchOption.AllDirectories))
+            {
+                files.Add(string.Format("{0}, {1:u}", file, File.GetLastWriteTimeUtc(file)));
+            }
+
+            Directory.CreateDirectory(Path.GetDirectoryName(OutputPath));
+
+            files.Sort();
+
+            using (Stream outStream = File.Open(OutputPath, FileMode.Create))
+            {
+                using (StreamWriter sw = new StreamWriter(outStream, new UTF8Encoding(false)))
+                {
+                    foreach (string file in files)
+                    {
+                        sw.WriteLine(file);
+                    }
+                }
+            }
+
+            return true;
+        }
+    }
+}