Increase tolerance for file conflicts within VS

dotnet · Dec 30, 2017 · aeba285 · aeba285
1 parent d116b7b
commit aeba285
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Showing 3 changed files with 37 additions and 3 deletions.
diff --git a/src/Nerdbank.GitVersioning.Tasks/AssemblyVersionInfo.cs b/src/Nerdbank.GitVersioning.Tasks/AssemblyVersionInfo.cs
@@ -85,7 +85,9 @@ public override bool Execute()
                     ns.Types.Add(this.CreateThisAssemblyClass());
 
                     Directory.CreateDirectory(Path.GetDirectoryName(this.OutputFile));
-                    using (var file = File.OpenWrite(this.OutputFile))
+                    FileStream file = null;
+                    Utilities.FileOperationWithRetry(() => file = File.OpenWrite(this.OutputFile));
+                    using (file)
                     {
                         using (var fileWriter = new StreamWriter(file, new UTF8Encoding(true), 4096, leaveOpen: true))
                         {
@@ -213,7 +215,8 @@ public override bool Execute()
                 this.CreateThisAssemblyClass();
 
                 Directory.CreateDirectory(Path.GetDirectoryName(this.OutputFile));
-                File.WriteAllText(this.OutputFile, this.generator.GetCode());
+                string fileContent = this.generator.GetCode();
+                Utilities.FileOperationWithRetry(() => File.WriteAllText(this.OutputFile, fileContent));
             }
 
             return !this.Log.HasLoggedErrors;

diff --git a/src/Nerdbank.GitVersioning.Tasks/NativeVersionInfo.cs b/src/Nerdbank.GitVersioning.Tasks/NativeVersionInfo.cs
@@ -124,7 +124,7 @@ public override bool Execute()
                 this.generator.EndFile();
 
                 Directory.CreateDirectory(Path.GetDirectoryName(this.OutputFile));
-                File.WriteAllText(this.OutputFile, this.generator.GetCode());
+                Utilities.FileOperationWithRetry(() => File.WriteAllText(this.OutputFile, this.generator.GetCode()));
             }
 
             return !this.Log.HasLoggedErrors;

diff --git a/src/Nerdbank.GitVersioning.Tasks/Utilities.cs b/src/Nerdbank.GitVersioning.Tasks/Utilities.cs
@@ -0,0 +1,31 @@
+using System;
+using System.IO;
+using System.Threading;
+using System.Threading.Tasks;
+using Validation;
+
+namespace Nerdbank.GitVersioning.Tasks
+{
+    internal static class Utilities
+    {
+        private const int ProcessCannotAccessFileHR = unchecked((int)0x80070020);
+
+        internal static void FileOperationWithRetry(Action operation)
+        {
+            Requires.NotNull(operation, nameof(operation));
+
+            for (int retriesLeft = 6; retriesLeft > 0; retriesLeft--)
+            {
+                try
+                {
+                    operation();
+                }
+                catch (IOException ex) when (ex.HResult == ProcessCannotAccessFileHR && retriesLeft > 0)
+                {
+                    Task.Delay(100).Wait();
+                    continue;
+                }
+            }
+        }
+    }
+}