From bc5ecc650f5a798dae094b64883b11688fe0fbf0 Mon Sep 17 00:00:00 2001
From: Renaud Paquay <rpaquay@google.com>
Date: Fri, 12 Jun 2020 15:08:33 -0700
Subject: [PATCH] Shorten logging when skipping directories

---
 src/Core/Chromium/ChromiumDiscovery.cs             | 14 +++++++++++---
 src/Core/Win32/Files/NativeFile.cs                 | 11 ++---------
 .../Builder/ProjectRootSnapshotBuilder.cs          | 10 ++++++++--
 3 files changed, 21 insertions(+), 14 deletions(-)

diff --git a/src/Core/Chromium/ChromiumDiscovery.cs b/src/Core/Chromium/ChromiumDiscovery.cs
index f2f86081..e577ea64 100644
--- a/src/Core/Chromium/ChromiumDiscovery.cs
+++ b/src/Core/Chromium/ChromiumDiscovery.cs
@@ -2,11 +2,13 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
+using System;
 using System.Collections.Generic;
 using System.Linq;
 using VsChromium.Core.Configuration;
 using VsChromium.Core.Files;
 using VsChromium.Core.Files.PatternMatching;
+using VsChromium.Core.Logging;
 using VsChromium.Core.Win32.Files;
 
 namespace VsChromium.Core.Chromium {
@@ -37,9 +39,15 @@ private bool IsChromiumSourceDirectory(FullPath path, IFilePatternsPathMatcherPr
       }
 
       // We need to ensure that all pattern lines are covered by at least one file/directory of |path|.
-      var entries = _fileSystem.GetDirectoryEntries(path);
-      return chromiumEnlistmentFilePatterns.PathMatcherEntries
-        .All(item => MatchFileOrDirectory(item, entries));
+      try {
+        var entries = _fileSystem.GetDirectoryEntries(path);
+        return chromiumEnlistmentFilePatterns.PathMatcherEntries
+          .All(item => MatchFileOrDirectory(item, entries));
+      }
+      catch (Exception e) {
+        Logger.LogWarn(e, "Error detecting chromium root directory, skipping directory \"{0}\"", path);
+        return false;
+      }
     }
 
     private static bool MatchFileOrDirectory(IPathMatcher item, IList<DirectoryEntry> entries) {
diff --git a/src/Core/Win32/Files/NativeFile.cs b/src/Core/Win32/Files/NativeFile.cs
index 61edebf6..a8394c93 100644
--- a/src/Core/Win32/Files/NativeFile.cs
+++ b/src/Core/Win32/Files/NativeFile.cs
@@ -84,15 +84,8 @@ public static unsafe List<DirectoryEntry> GetDirectoryEntries(string path) {
         IntPtr.Zero);
       if (fileHandle.IsInvalid) {
         var lastWin32Error = Marshal.GetLastWin32Error();
-        if (lastWin32Error != (int)Win32Errors.ERROR_FILE_NOT_FOUND &&
-            lastWin32Error != (int)Win32Errors.ERROR_PATH_NOT_FOUND &&
-            lastWin32Error != (int)Win32Errors.ERROR_ACCESS_DENIED) {
-          throw new LastWin32ErrorException(lastWin32Error,
-            string.Format("Error enumerating files at \"{0}\".", path));
-        }
-
-        // Skip this directory
-        return directoryEntries;
+        throw new LastWin32ErrorException(lastWin32Error,
+          string.Format("Error enumerating files at \"{0}\".", path));
       }
 
       using (fileHandle) {
diff --git a/src/Server/FileSystem/Builder/ProjectRootSnapshotBuilder.cs b/src/Server/FileSystem/Builder/ProjectRootSnapshotBuilder.cs
index 1815f300..99571548 100644
--- a/src/Server/FileSystem/Builder/ProjectRootSnapshotBuilder.cs
+++ b/src/Server/FileSystem/Builder/ProjectRootSnapshotBuilder.cs
@@ -5,6 +5,7 @@
 using System;
 using System.Collections.Concurrent;
 using System.Collections.Generic;
+using System.ComponentModel;
 using System.Linq;
 using System.Threading;
 using System.Threading.Tasks;
@@ -289,11 +290,16 @@ private List<Task> ProcessDirectory(DirectoryData directory, ConcurrentBag<Direc
     }
 
     private IList<DirectoryEntry> GetDirectoryEntries(DirectoryData directory) {
+      var path = _project.RootPath.Combine(directory.DirectoryName.RelativePath);
       try {
-        return _fileSystem.GetDirectoryEntries(_project.RootPath.Combine(directory.DirectoryName.RelativePath));
+        return _fileSystem.GetDirectoryEntries(path);
+      }
+      catch (Win32Exception e) {
+        Logger.LogWarn("Skipping directory \"{0}\": {1} ({2})", path, e.Message, e.NativeErrorCode);
+        return ArrayUtilities.EmptyList<DirectoryEntry>.Instance;
       }
       catch (Exception e) {
-        Logger.LogWarn(e, "Skipping directory due to error");
+        Logger.LogWarn(e, "Skipping directory \"{0}\"", path);
         return ArrayUtilities.EmptyList<DirectoryEntry>.Instance;
       }
     }