/**
* * if this is a pv control other pvs, when this pv's value changes, it will stop or restart all
* controlled pvs.
*
* @param ev
* @throws Exception error when update all controlled pv's archiving status
*/
private void updateAllControlPVEnablMent(MonitorEvent ev) throws Exception {
final DBR dbr = ev.getDBR();
boolean enable = DBR_Helper.decodeBooleanValue(dbr);
ArrayList<String> copyOfControlledPVList = new ArrayList<String>(controlledPVList);
if (enable) {
enableAllPV = true;
for (String pvName : copyOfControlledPVList) {
logger.debug(pvName + " will be resumed");
ArchiveEngine.resumeArchivingPV(pvName, configservice);
}
} else {
enableAllPV = false;
for (String pvName : copyOfControlledPVList) {
logger.debug(pvName + " will be paused");
ArchiveEngine.pauseArchivingPV(pvName, configservice);
}
}
}
/** Subscribe for value updates. */
private void subscribe() {
synchronized (this) {
// Prevent multiple subscriptions.
if (subscription != null) {
return;
}
// Late callback, channel already closed?
final RefCountedChannel ch_ref = channel_ref;
if (ch_ref == null) {
return;
}
final Channel channel = ch_ref.getChannel();
// final Logger logger = Activator.getLogger();
try {
if (channel.getConnectionState() != Channel.CONNECTED) {
return;
}
//
// the RefCountedChannel should maintain a single
// subscription to the underlying CAJ/JCA channel.
// So even with N PVs for the same channel, it's
// only one subscription on the network instead of
// N subscriptions.
final DBRType type = DBR_Helper.getTimeType(plain, channel.getFieldType());
state = PVConnectionState.Subscribing;
totalMetaInfo.setStartTime(System.currentTimeMillis());
// isnotTimestampDBR
if (this.name.endsWith(".RTYP")) {
subscription = channel.addMonitor(MonitorMask.ARCHIVE.getMask(), this);
} else {
subscription =
channel.addMonitor(
type, channel.getElementCount(), MonitorMask.ARCHIVE.getMask(), this);
}
} catch (final Exception ex) {
logger.error("exception when subscribing pv " + name, ex);
}
}
}
