/** Stop all the PVs, disconnect from JMS */
public void stop() {
if (nag_timer != null) {
nag_timer.cancel();
nag_timer = null;
}
messenger.sendAnnunciation("Alarm server exiting");
stopPVs();
messenger.stop();
}
/** Start all the PVs, connect to JMS */
public void start() {
messenger.start();
messenger.sendAnnunciation(Messages.StartupMessage);
startPVs();
// Conditionally enable nagging
double nag_period;
try {
nag_period = AlarmServerPreferences.getNagPeriod();
} catch (Exception ex) {
Activator.getLogger()
.log(
Level.WARNING,
"Invalid '"
+ AlarmServerPreferences.NAG_PERIOD
+ "', repeated annunciations disabled",
ex);
nag_period = 0.0;
}
if (nag_period > 0) {
nag_timer =
new NagTimer(
Math.round(nag_period * 1000),
new NagTimerHandler() {
@Override
public int getActiveAlarmCount() {
int active = 0;
// Sync on access to pv_list
synchronized (AlarmServer.this) {
for (AlarmPV pv : pv_list)
if (pv.getAlarmLogic().getAlarmState().getSeverity().isActive()) ++active;
}
return active;
}
@Override
public void nagAboutActiveAlarms(final int active) {
final String message;
if (active == 1) message = "There is 1 active alarm";
else message = NLS.bind("There are {0} active alarms", active);
messenger.sendAnnunciation(message);
}
});
nag_timer.start();
}
}
/**
* Perform annunciation
*
* @param level Alarm severity
* @param message Text message to send to annunciator
*/
public void sendAnnunciation(final SeverityLevel level, final String message) {
resetNagTimer();
messenger.sendAnnunciation(level, message);
}