[Storage] Fix the issue of listing blobs with leading slashes (#21427)

* Fix for slash issue

* update GetTrack2BlobClient input

* update sdk dependency

* Add warning message for breaking change

* Update warning message

* Update warning message to apply to just the parameter

Author: yifanz0

src/Storage/Storage.Management/ChangeLog.md

@@ -18,6 +18,10 @@
         - Additional information about change #1
 -->
 ## Upcoming Release
+* Added a warning message for an upcoming breaking change when getting a single blob 
+    - `Get-AzStorageBlob`
+* Fixed the issue of listing blobs with leading slashes 
+    - `Get-AzStorageBlob`
 * Added support for sticky bit 
     - `New-AzDataLakeGen2Item`
     - `New-AzDataLakeGen2ACLObject`

src/Storage/Storage/Blob/Cmdlet/GetAzureStorageBlob.cs

@@ -57,6 +57,7 @@ public class GetAzureStorageBlobCommand : StorageCloudBlobCmdletBase
         /// </summary>
         private const string SingleBlobVersionIDParameterSet = "SingleBlobVersionID";
 
+        [CmdletParameterBreakingChange("Blob", ChangeDescription = "Leading and trailing slashes will not be trimmed in a future release.")]
         [Parameter(Position = 0, HelpMessage = "Blob name", ParameterSetName = NameParameterSet)]
         [Parameter(Position = 0, Mandatory = true, HelpMessage = "Blob name", ParameterSetName = SingleBlobSnapshotTimeParameterSet)]
         [Parameter(Position = 0, Mandatory = true, HelpMessage = "Blob name", ParameterSetName = SingleBlobVersionIDParameterSet)]
@@ -329,6 +330,7 @@ internal async Task ListBlobsByPrefix(long taskId, IStorageBlobManagement localC
                     {
                         if (blobFilter == null || blobFilter(item.Name))
                         {
+                            ClientOptions.TrimBlobNameSlashes = false;
                             OutputStream.WriteObject(taskId, GetAzureStorageBlob(item, track2container, localChannel.StorageContext, page.ContinuationToken, ClientOptions));
                         }
                         realListCount++;
@@ -387,7 +389,7 @@ internal async Task ListBlobsByPrefix(long taskId, IStorageBlobManagement localC
 
         public static AzureStorageBlob GetAzureStorageBlob(BlobItem blobItem, BlobContainerClient track2container, AzureStorageContext context, string continuationToken = null, BlobClientOptions options = null)
         {
-            BlobBaseClient blobClient = Util.GetTrack2BlobClient(track2container, blobItem.Name, context, blobItem.VersionId, blobItem.IsLatestVersion, blobItem.Snapshot, options, blobItem.Properties.BlobType);
+            BlobBaseClient blobClient = Util.GetTrack2BlobClient(track2container, blobItem.Name, context, blobItem.VersionId, blobItem.IsLatestVersion, blobItem.Snapshot, options, blobItem.Properties.BlobType, shouldTrimSlash: false);
             AzureStorageBlob outputblob = new AzureStorageBlob(blobClient, context, options, blobItem);
             if (!string.IsNullOrEmpty(continuationToken))
             {

src/Storage/Storage/Common/Util.cs

@@ -400,10 +400,10 @@ public static Hashtable GetHashtableFromDictionary(IDictionary<string, string> d
             }
         }
 
-        public static BlobBaseClient GetTrack2BlobClient(BlobContainerClient track2container, string blobName, AzureStorageContext context, string versionId = null, bool? IsCurrentVersion = null, string snapshot = null, BlobClientOptions options = null, global::Azure.Storage.Blobs.Models.BlobType? blobType = null)
+        public static BlobBaseClient GetTrack2BlobClient(BlobContainerClient track2container, string blobName, AzureStorageContext context, string versionId = null, bool? IsCurrentVersion = null, string snapshot = null, BlobClientOptions options = null, global::Azure.Storage.Blobs.Models.BlobType? blobType = null, bool shouldTrimSlash = true)
         {
             //Get Track2 Blob Client Uri
-            BlobUriBuilder blobUriBuilder = new BlobUriBuilder(track2container.Uri)
+            BlobUriBuilder blobUriBuilder = new BlobUriBuilder(track2container.Uri, trimBlobNameSlashes: shouldTrimSlash)
             {
                 BlobName = blobName
             };