Web App Gallery installer: validate mysql username length

WebsitePanel/Sources/WebsitePanel.WebPortal/DesktopModules/WebsitePanel/WebApplicationGalleryParamControl.ascx

@@ -52,6 +52,10 @@
             <asp:RegularExpressionValidator ID="regexpTextValue" runat="server"
                 ControlToValidate="textValue" Text="!" ValidationGroup="wag" 
                 Display="Dynamic" SetFocusOnError="True"></asp:RegularExpressionValidator>
+            <asp:CustomValidator runat="server" ID="MysqlUsernameLengthValidator"
+                ControlToValidate="textValue" OnServerValidate="mysqlUsernameLen_OnServerValidate"
+                Display="Dynamic" SetFocusOnError="True" ValidationGroup="wag" Enabled="False"
+                Text="Mysql username can not be longer than 16 characters"></asp:CustomValidator>
         </div>
     </div>
 

WebsitePanel/Sources/WebsitePanel.WebPortal/DesktopModules/WebsitePanel/WebApplicationGalleryParamControl.ascx.cs

@@ -213,6 +213,15 @@ namespace WebsitePanel.Portal
                 textValue.Text = DefaultValue;
                 valPrefix.Text = ValuePrefix;
                 valSuffix.Text = ValueSuffix;
+
+                if (
+                    (WellKnownTags & DeploymentParameterWellKnownTag.MySql) == DeploymentParameterWellKnownTag.MySql 
+                    && 
+                    (WellKnownTags & DeploymentParameterWellKnownTag.DBUserName) == DeploymentParameterWellKnownTag.DBUserName 
+                    )
+                {
+                    MysqlUsernameLengthValidator.Enabled = true;
+                }
             }
 
             
@@ -248,5 +257,20 @@ namespace WebsitePanel.Portal
 
 
         }
+
+        protected void mysqlUsernameLen_OnServerValidate(object source, ServerValidateEventArgs args)
+        {
+            args.IsValid = true;
+            
+            // get entered database name with prefixes / suffixes
+            string value = GetParameterValue();
+
+            // check length
+            if (!string.IsNullOrEmpty(value) && value.Length <= 16)
+                return;
+
+            // validation failed
+            args.IsValid = false;
+        }
     }
 }

WebsitePanel/Sources/WebsitePanel.WebPortal/DesktopModules/WebsitePanel/WebApplicationGalleryParamControl.ascx.designer.cs

@@ -165,6 +165,15 @@ namespace WebsitePanel.Portal {
         /// </remarks>
         protected global::System.Web.UI.WebControls.RegularExpressionValidator regexpTextValue;
         
+        /// <summary>
+        /// MysqlUsernameLengthValidator control.
+        /// </summary>
+        /// <remarks>
+        /// Auto-generated field.
+        /// To modify move field declaration from designer file to code-behind file.
+        /// </remarks>
+        protected global::System.Web.UI.WebControls.CustomValidator MysqlUsernameLengthValidator;
+        
         /// <summary>
         /// BooleanControl control.
         /// </summary>