Bugfix/Prevent open connections on typeorm datasource (#3652)

prevent open connections on typeorm datasource

packages/components/nodes/memory/AgentMemory/MySQLAgentMemory/mysqlSaver.ts

@@ -21,6 +21,13 @@ export class MySQLSaver extends BaseCheckpointSaver implements MemoryMethods {
 
     private async getDataSource(): Promise<DataSource> {
         const { datasourceOptions } = this.config
+        if (!datasourceOptions) {
+            throw new Error('No datasource options provided')
+        }
+        // Prevent using default Postgres port, otherwise will throw uncaught error and crashing the app
+        if (datasourceOptions.port === 5432) {
+            throw new Error('Invalid port number')
+        }
         const dataSource = new DataSource(datasourceOptions)
         await dataSource.initialize()
         return dataSource