Add a new config MAX_SERVER_TAGS_ALLOWED to limit the number of tags on server node. #8192

web/config.py

@@ -940,6 +940,11 @@ SERVER_HEARTBEAT_TIMEOUT = 30  # In seconds
 #############################################################################
 ENABLE_SERVER_PASS_EXEC_CMD = False
 
+#############################################################################
+# Maximum number of Tags allowed on a server node
+##############################################################################
+MAX_SERVER_TAGS_ALLOWED = 5
+
 #############################################################################
 # Number of records to fetch in one batch for server logs.
 ##############################################################################

web/pgadmin/browser/__init__.py

@@ -502,7 +502,6 @@ def utils():
     # This will be opposite of use_space option
     editor_indent_with_tabs = False if editor_use_spaces else True
 
-    prefs = Preferences.module('browser')
     # Try to fetch current libpq version from the driver
     try:
         from config import PG_DEFAULT_DRIVER
@@ -574,6 +573,7 @@ def utils():
             restricted_shared_storage_list=[] if current_user.has_role(
                 "Administrator") else restricted_shared_storage_list,
             enable_server_passexec_cmd=config.ENABLE_SERVER_PASS_EXEC_CMD,
+            max_server_tags_allowed=config.MAX_SERVER_TAGS_ALLOWED,
         ),
         200, {'Content-Type': MIMETYPE_APP_JS})
 

web/pgadmin/browser/server_groups/servers/static/js/server.ui.js

@@ -398,10 +398,10 @@ export default class ServerSchema extends BaseUISchema {
         helpMessage: gettext('If it is set to 0, every query is prepared the first time it is executed. If it is set to blank, prepared statements are disabled on the connection.')
       },
       {
-        id: 'tags', label: '',
+        id: 'tags', label: gettext('Tags'),
         type: 'collection', group: gettext('Tags'),
         schema: this.tagsSchema, mode: ['edit', 'create'], uniqueCol: ['text'],
-        canAdd: true, canEdit: false, canDelete: true,
+        canAdd: true, canEdit: false, canDelete: true, maxCount: pgAdmin.Browser.utils.max_server_tags_allowed,
       },
     ];
   }

web/pgadmin/browser/templates/browser/js/utils.js

@@ -100,6 +100,7 @@ define('pgadmin.browser.utils',
     pg_libpq_version: {{pg_libpq_version|e}},
     support_ssh_tunnel: '{{ support_ssh_tunnel }}' == 'True',
     logout_url: '{{logout_url}}',
+    max_server_tags_allowed: {{max_server_tags_allowed}},
 
     counter: {total: 0, loaded: 0},
     registerScripts: function (ctx) {

web/pgadmin/static/js/SchemaView/SchemaState/common.js

@@ -252,6 +252,11 @@ export function validateCollectionSchema(
   const rows = sessData[field.id] || [];
   const currPath = accessPath.concat(field.id);
 
+  if(rows.length > field.maxCount) {
+    setError(currPath, gettext('Maximum %s \'%s\' allowed',field.maxCount, field.label));
+    return true;
+  }
+
   // Loop through data.
   for(const [rownum, row] of rows.entries()) {
     if(validateSchema(