NuGet Job, don't rethrow exceptions if blob is not found (#10188)

* Blob not found exception handle properly

Author: erdembayar

src/Catalog/Persistence/AzureStorage.cs

@@ -421,7 +421,7 @@ protected override async Task OnDeleteAsync(Uri resourceUri, DeleteRequestOption
             string blobName = GetName(resourceUri);
             BlobRequestConditions accessCondition = (deleteRequestOptions as DeleteRequestOptionsWithAccessCondition)?.BlobRequestConditions;
             BlockBlobClient blobClient = GetBlockBlobReference(blobName);
-            await blobClient.DeleteAsync(DeleteSnapshotsOption.IncludeSnapshots, accessCondition, cancellationToken);
+            await blobClient.DeleteIfExistsAsync(DeleteSnapshotsOption.IncludeSnapshots, accessCondition, cancellationToken);
         }
 
         public override Uri GetUri(string name)

src/Catalog/Persistence/Storage.cs

@@ -8,8 +8,8 @@
 using System.Net;
 using System.Threading;
 using System.Threading.Tasks;
+using Azure;
 using Newtonsoft.Json;
-using NuGetGallery;
 
 namespace NuGet.Services.Metadata.Catalog.Persistence
 {
@@ -125,21 +125,9 @@ public async Task DeleteAsync(Uri resourceUri, CancellationToken cancellationTok
             {
                 await OnDeleteAsync(resourceUri, deleteRequestOptions, cancellationToken);
             }
-            catch (CloudBlobStorageException e)
+            catch (RequestFailedException e) when (e.Status == (int)HttpStatusCode.NotFound)
             {
-                WebException webException = e.InnerException as WebException;
-                if (webException != null)
-                {
-                    HttpStatusCode statusCode = ((HttpWebResponse)webException.Response).StatusCode;
-                    if (statusCode != HttpStatusCode.NotFound)
-                    {
-                        throw;
-                    }
-                }
-                else
-                {
-                    throw;
-                }
+                // continue
             }
             catch (Exception e)
             {