org.yamcs.events.StreamEventProducer Maven / Gradle / Ivy
package org.yamcs.events;
import org.yamcs.ConfigurationException;
import org.yamcs.YamcsServer;
import org.yamcs.archive.EventRecorder;
import org.yamcs.yarch.protobuf.Db.Event;
import org.yamcs.time.TimeService;
import org.yamcs.utils.TimeEncoding;
import org.yamcs.yarch.Stream;
import org.yamcs.yarch.Tuple;
import org.yamcs.yarch.TupleDefinition;
import org.yamcs.yarch.YarchDatabase;
/**
* Event producer used from inside Yamcs to report events. It writes directly to the realtime_event stream
*
*
* @author nm
*
*/
public class StreamEventProducer extends AbstractEventProducer {
final Stream realtimeEventStream;
final TupleDefinition tdef;
final TimeService timeService;
public StreamEventProducer(String yamcsInstance) {
realtimeEventStream = YarchDatabase.getInstance(yamcsInstance)
.getStream(EventRecorder.REALTIME_EVENT_STREAM_NAME);
if (realtimeEventStream == null) {
throw new ConfigurationException("Cannot find a stream named '" + EventRecorder.REALTIME_EVENT_STREAM_NAME
+ "' in instance " + yamcsInstance);
}
tdef = realtimeEventStream.getDefinition();
timeService = YamcsServer.getTimeService(yamcsInstance);
}
@Override
public void sendEvent(Event event) {
Tuple t = new Tuple(tdef, new Object[] { event.getGenerationTime(),
event.getSource(), event.getSeqNumber(), event });
realtimeEventStream.emitTuple(t);
}
@Override
public void close() {
//no resource to release
}
@Override
public long getMissionTime() {
long t;
if (timeService == null) {
t = TimeEncoding.getWallclockTime();
} else {
t = timeService.getMissionTime();
}
return t;
}
}
© 2015 - 2024 Weber Informatics LLC | Privacy Policy