From 1f07e1e2e3edfc6b6c4dabe282f22b44315695ff Mon Sep 17 00:00:00 2001
From: Krzysztof Wicher <mordotymoja@gmail.com>
Date: Wed, 15 Feb 2017 17:18:24 -0800
Subject: [PATCH] attempt to fix intermittent failures

---
 .../Extensions/LockFileFormatExtensions.cs       | 16 ++++++++--------
 1 file changed, 8 insertions(+), 8 deletions(-)

diff --git a/src/Microsoft.DotNet.Cli.Utils/Extensions/LockFileFormatExtensions.cs b/src/Microsoft.DotNet.Cli.Utils/Extensions/LockFileFormatExtensions.cs
index 4200854e3..0c4f9c702 100644
--- a/src/Microsoft.DotNet.Cli.Utils/Extensions/LockFileFormatExtensions.cs
+++ b/src/Microsoft.DotNet.Cli.Utils/Extensions/LockFileFormatExtensions.cs
@@ -20,18 +20,18 @@ namespace Microsoft.DotNet.Cli.Utils
 
         public static async Task<LockFile> ReadWithLock(this LockFileFormat subject, string path)
         {
-            if(!File.Exists(path))
-            {
-                throw new GracefulException(string.Join(
-                    Environment.NewLine,
-                    string.Format(LocalizableStrings.FileNotFound, path),
-                    LocalizableStrings.ProjectNotRestoredOrRestoreFailed));
-            }
-
             return await ConcurrencyUtilities.ExecuteWithFileLockedAsync(
                 path, 
                 lockedToken =>
                 {
+                    if (!File.Exists(path))
+                    {
+                        throw new GracefulException(string.Join(
+                            Environment.NewLine,
+                            string.Format(LocalizableStrings.FileNotFound, path),
+                            LocalizableStrings.ProjectNotRestoredOrRestoreFailed));
+                    }
+                    
                     var lockFile = FileAccessRetrier.RetryOnFileAccessFailure(() => subject.Read(path));
 
                     return lockFile;