SVGHMI: added a watchdog. To ensure that the whole chain is checked, watchdog use a periodic echo of a hearteat variable. JS client code systematically register /HEARTBEAT at 1s update freq, and reacts on updates of /HEARTBEAT by systematically incrementing it. C code catch /HEARTBEAT update and feeds python-implemented watchdog. For now, watchdog does nothing when tiggered
// import Nevow.Athena
function init() {
Nevow.Athena.Widget.fromAthenaID(1).callRemote('HMIexec', 'HMIinitialisation');
}
WebInterface.PLC = Nevow.Athena.Widget.subclass('WebInterface.PLC');
WebInterface.PLC.method(
'updateHMI',
function (self, data) {
d = self.callRemote('getPLCElement');
d.addCallback(
function liveElementReceived(le) {
d2 = self.addChildWidgetFromWidgetInfo(le);
d2.addCallback(
function childAdded(widget) {
var node = self.nodeById('content');
node.replaceChild(widget.node, node.getElementsByTagName('div')[0]);
init();
});
});
});
Divmod.Base.addLoadEvent(init);