private void createIoSubsystem ( OperationContext context , Map < PathAddress , ModelNode > migrationOperations , PathAddress baseAddress ) { Resource root = context . readResourceFromRoot ( baseAddress , false ) ; if ( root . getChildrenNames ( SUBSYSTEM ) . contains ( IOExtension . SUBSYSTEM_NAME ) ) { // subsystem is already added, do nothing return ; } //these addresses will be fixed later, no need to use the base address PathAddress address = pathAddress ( pathElement ( SUBSYSTEM , IOExtension . SUBSYSTEM_NAME ) ) ; migrationOperations . put ( address , createAddOperation ( address ) ) ; address = pathAddress ( pathElement ( SUBSYSTEM , IOExtension . SUBSYSTEM_NAME ) , pathElement ( "worker" , "default" ) ) ; migrationOperations . put ( address , createAddOperation ( address ) ) ; address = pathAddress ( pathElement ( SUBSYSTEM , IOExtension . SUBSYSTEM_NAME ) , pathElement ( "buffer-pool" , "default" ) ) ; migrationOperations . put ( address , createAddOperation ( address ) ) ; }
We need to create the IO subsystem if it does not already exist