Fixed Set-AzWebApp and Set-AZWebAppSlot to rethrow exception when Service Principal/User doesn't have permission to list web app configuration. [#19942]

src/Websites/Websites/ChangeLog.md

@@ -19,6 +19,7 @@
 -->
 ## Upcoming Release
 * Added Tag parameter for `New-AzWebApp` and `New-AzWebAppSlot`
+* Fixed `Set-AzWebApp` and `Set-AZWebAppSlot` to rethrow exception when Service Principal/User doesn't have permission to list web app configuration. [#19942]
 
 ## Version 2.11.5
 * Fixed `Publish-AzWebApp` to use latest publish API when deploying war package [#19791]

src/Websites/Websites/Cmdlets/DeploymentSlots/SetAzureWebAppSlot.cs

@@ -147,7 +147,7 @@ public override void ExecuteCmdlet()
             switch (ParameterSetName)
             {
                 case ParameterSet1Name:
-                    WebApp = new PSSite(WebsitesClient.GetWebApp(ResourceGroupName, Name, Slot));
+                    WebApp = new PSSite(WebsitesClient.GetWebApp(ResourceGroupName, Name, Slot, false));
                     location = WebApp.Location;
                     tags = WebApp.Tags;
                     var parameters = new HashSet<string>(MyInvocation.BoundParameters.Keys, StringComparer.OrdinalIgnoreCase);

src/Websites/Websites/Cmdlets/WebApps/SetAzureWebApp.cs

@@ -151,7 +151,7 @@ public override void ExecuteCmdlet()
             switch (ParameterSetName)
             {
                 case ParameterSet1Name:
-                    WebApp = new PSSite(WebsitesClient.GetWebApp(ResourceGroupName, Name, null));
+                    WebApp = new PSSite(WebsitesClient.GetWebApp(ResourceGroupName, Name, null, false));
                     location = WebApp.Location;
                     tags = WebApp.Tags;
                     var parameters = new HashSet<string>(MyInvocation.BoundParameters.Keys, StringComparer.OrdinalIgnoreCase);

src/Websites/Websites/Utilities/WebsitesClient.cs

@@ -246,7 +246,7 @@ public HttpStatusCode RemoveWebApp(string resourceGroupName, string webSiteName,
             return HttpStatusCode.OK;
         }
 
-        public PSSite GetWebApp(string resourceGroupName, string webSiteName, string slotName)
+        public PSSite GetWebApp(string resourceGroupName, string webSiteName, string slotName, Boolean ignoreError = true)
         {
             Site site = null;
             string qualifiedSiteName;
@@ -255,7 +255,7 @@ public PSSite GetWebApp(string resourceGroupName, string webSiteName, string slo
                 WrappedWebsitesClient.WebApps().GetSlot(resourceGroupName, webSiteName, slotName) :
                 WrappedWebsitesClient.WebApps().Get(resourceGroupName, webSiteName);
 
-            GetWebAppConfiguration(resourceGroupName, webSiteName, slotName, site);
+            GetWebAppConfiguration(resourceGroupName, webSiteName, slotName, site, ignoreError);
             PSSite psSite = new PSSite(site);
             var AzureStorageAccounts = CmdletHelpers.ShouldUseDeploymentSlot(webSiteName, slotName, out qualifiedSiteName) ?
                                        GetAzureStorageAccounts(resourceGroupName, webSiteName, slotName, true) :
@@ -601,7 +601,7 @@ public void UpdateWebAppConfiguration(string resourceGroupName, string location,
             }
         }
 
-        public void GetWebAppConfiguration(string resourceGroupName, string webSiteName, string slotName, Site site)
+        public void GetWebAppConfiguration(string resourceGroupName, string webSiteName, string slotName, Site site, Boolean ignoreError = true)
         {
             string qualifiedSiteName;
             var useSlot = CmdletHelpers.ShouldUseDeploymentSlot(webSiteName, slotName, out qualifiedSiteName);
@@ -629,9 +629,13 @@ public void GetWebAppConfiguration(string resourceGroupName, string webSiteName,
                         Type = s.Value.Type
                     }).ToList();
             }
-            catch
+            catch (Exception e)
             {
-                //ignore if this call fails as it will for reader RBAC
+                if (!ignoreError)
+                {
+                    ReThrowException(e);
+                }
+                //continue if ignoreError is true, this call fails as it will for reader RBAC
             }
         }
 
@@ -1081,5 +1085,21 @@ private void WriteError(string errorFormat, params object[] args)
                 ErrorLogger(string.Format(errorFormat, args));
             }
         }
+
+        private void ReThrowException(Exception e)
+        {
+            if (e.GetType() == typeof(DefaultErrorResponseException))
+            {
+                DefaultErrorResponseException originEx = (DefaultErrorResponseException)e;
+                if (originEx != null && originEx.Body != null && originEx.Body.Error != null)
+                {
+                    string errorMessage = string.Format("{0}.{1}", originEx.Message, originEx.Body.Error.Message);
+                    DefaultErrorResponseException ex = new DefaultErrorResponseException(errorMessage, originEx.InnerException);
+                    ex.Body = originEx.Body;
+                    throw ex;
+                }
+            }
+            throw e;
+        }
     }
 }