Fixed bug where ShareDirectoryClient.SetMetadataAsync() would not pro…

…perty parse Last-Modified response header. (#22309)

sdk/storage/Azure.Storage.Common/src/Shared/Constants.cs

@@ -172,6 +172,7 @@ internal static class HeaderNames
             public const string ContentRange = "Content-Range";
             public const string VersionId = "x-ms-version-id";
             public const string LeaseTime = "x-ms-lease-time";
+            public const string LastModified = "Last-Modified";
         }
 
         internal static class ErrorCodes

sdk/storage/Azure.Storage.Files.Shares/CHANGELOG.md

@@ -4,6 +4,7 @@
 - Added support for service version 2020-10-02.
 - Added support for OAuth copy sources in ShareFileClient.UploadRangeFromUri()
 - Added support for including additional information in ShareDirectoryClient.GetFilesAndDirectories().
+- Fixed bug where ShareDirectoryClient.SetMetadataAsync() would not property parse Last-Modified response header.
 
 ## 12.7.0 (2021-06-08)
 - Includes all features from 12.7.0-beta.4.

sdk/storage/Azure.Storage.Files.Shares/src/ShareExtensions.cs

@@ -172,11 +172,12 @@ internal static ShareDirectoryInfo ToShareDirectoryInfo(this ResponseWithHeaders
                 return null;
             }
 
-            // Set Directory metadata returns limited resposne headers - https://docs.microsoft.com/en-us/rest/api/storageservices/set-directory-metadata.
+            // Set Directory metadata returns limited response headers - https://docs.microsoft.com/en-us/rest/api/storageservices/set-directory-metadata.
             return new ShareDirectoryInfo
             {
                 ETag = response.GetRawResponse().Headers.ETag.GetValueOrDefault(),
-                SmbProperties = new FileSmbProperties()
+                SmbProperties = new FileSmbProperties(),
+                LastModified = response.GetRawResponse().Headers.ExtractLastModified()
             };
         }
 
@@ -200,6 +201,7 @@ internal static StorageClosedHandlesSegment ToStorageClosedHandlesSegment(this R
             {
                 return null;
             }
+
             return new StorageClosedHandlesSegment
             {
                 Marker = response.Headers.Marker,
@@ -894,5 +896,17 @@ internal static ShareFileItemProperties ToShareFileItemProperties(this FilePrope
                 lastModified: fileProperty.LastModified,
                 eTag: fileProperty.Etag == null ? null : new ETag(fileProperty.Etag));
         }
+
+        internal static DateTimeOffset ExtractLastModified(this ResponseHeaders responseHeaders)
+        {
+            DateTimeOffset lastModified = DateTimeOffset.MinValue;
+
+            if (responseHeaders.TryGetValue(Constants.HeaderNames.LastModified, out string lastModifiedString))
+            {
+                lastModified = DateTimeOffset.Parse(lastModifiedString, CultureInfo.InvariantCulture);
+            }
+
+            return lastModified;
+        }
     }
 }

sdk/storage/Azure.Storage.Files.Shares/tests/DirectoryClientTests.cs

@@ -703,7 +703,8 @@ public async Task SetMetadataAsync()
             IDictionary<string, string> metadata = BuildMetadata();
 
             // Act
-            await directory.SetMetadataAsync(metadata);
+            Response<ShareDirectoryInfo> setMetadataResponse = await directory.SetMetadataAsync(metadata);
+            Assert.AreNotEqual(DateTimeOffset.MinValue, setMetadataResponse.Value.LastModified);
 
             // Assert
             Response<ShareDirectoryProperties> response = await directory.GetPropertiesAsync();