public boolean sendEventSync(final Event event) {
boolean succesfull = false;
if (EchoProtocolManager.getInstance().getMyStation().isActive()) {
try {
// Creates a broadcast Datagram Connection
dgConnection =
(DatagramConnection)
Connector.open(
"radiogram://"
+ EchoProtocolManager.getInstance().getMyStation().getAddress().longValue()
+ ":"
+ DTSPORT);
// Creates a Datagram using the above Connection
final Datagram datagram = dgConnection.newDatagram(dgConnection.getMaximumLength());
// Clean the Datagram
datagram.reset();
// Convert event to byte Array
final byte[] eventArray = event.toByteArray();
// Send Class Type
datagram.writeUTF(event.getClass().getName());
// Send length
datagram.writeInt(eventArray.length);
// Send array
datagram.write(eventArray, 0, eventArray.length);
// Send the datagram
dgConnection.send(datagram);
dgConnection.close();
Logger.getInstance().debug("Event sent succefully");
succesfull = true;
} catch (Exception ex) {
Logger.getInstance().debug("Unable to send event", ex);
// Close the open connection
try {
dgConnection.close();
} catch (Exception e) {
// eat it
}
succesfull = false;
}
}
return succesfull;
}
/** Creates a new instance of DTSManager. */
private DTSManager() {
// Observer EchoProtocol events etc.
EchoProtocolManager.getInstance().addObserver(this);
eventSender = new EventSender();
eventSender.start();
failedUpdate = false;
}
/** The connection to the Battle Station was lost. */
private void setDisconnected() {
// Close a possible connection to the Battle FGStationApp
try {
if (dgConnection != null && !EchoProtocolManager.getInstance().getMyStation().isActive()) {
dgConnection.close();
}
} catch (Exception ex) {
Logger.getInstance().debug("Unable to disconnect", ex);
}
}
/** Loops through the eventBuffer and sends every entry to Battle Station. */
protected void emptyEventBuffer() { // NOPMD
/*TODO find an efficient way to empty send multiple *EVENTENTITIES*/
// time1 = System.currentTimeMillis();
// Send EVENTENTITIES
// Read all events from the corresponding recordstore
Vector eventBuffer = StorageService.getInstance().listEntities(StorableEntity.EVENTENTITY);
// Clear the event recordstore
StorageService.getInstance().clear(StorableEntity.EVENTENTITY);
// time2 = System.currentTimeMillis();
// Logger.getInstance().debug("\t\t***Events: "+ eventBuffer.size());
// time2 = time2 - time1;
// Logger.getInstance().debug("\t\t***Storage time: " + time2);
// Send each event to the Battle FGStationApp
Enumeration eve;
for (eve = eventBuffer.elements(); eve.hasMoreElements(); ) {
final Event event = (Event) eve.nextElement();
// Previous attempt sending the event failed
// don't try to send next event, add it to storage
if (failedUpdate) {
Logger.getInstance().debug("Failed.Adding event back to storage.");
StorageService.getInstance().add(event);
// FinnLogger.getInstance().increaseStoredEvents();
// Send the event normally
} else {
sendEvent(event);
// FinnLogger.getInstance().decreaseStoredEvents();
final int tmpVar = 5;
Utils.sleep(tmpVar * (1 + EchoProtocolManager.getInstance().getNeighbours().size()));
// Logger.getInstance().debug("Updating eu.funinnumbers.station event: " + i + "/" +
// eventBuffer.size());
}
}
// Sending ACTIONEVENTENTITIES
// time1 = System.currentTimeMillis();
// Read all events from the corresponding recordstore
eventBuffer = StorageService.getInstance().listEntities(StorableEntity.ACTIONEVENTENTITY);
// Clear the event recordstore
StorageService.getInstance().clear(StorableEntity.ACTIONEVENTENTITY);
// time2 = System.currentTimeMillis();
// Logger.getInstance().debug("\t\t***Events: "+ eventBuffer.size());
// time2 = time2 - time1;
// Logger.getInstance().debug("\t\t***Storage time: " + time2);
// Send each event to the Battle FGStationApp
Enumeration act;
for (act = eventBuffer.elements(); act.hasMoreElements(); ) {
final Event event = (Event) act.nextElement();
// Previous attempt sending the event failed
// don't try to send next event, add it to storage
if (failedUpdate) {
Logger.getInstance().debug("Failed.Adding event back to storage.");
StorageService.getInstance().add(event);
// FinnLogger.getInstance().increaseStoredEvents();
// Send the event normally
} else {
sendEvent(event);
// FinnLogger.getInstance().decreaseStoredEvents();
// Variable rate
final int tmpVar = 5;
Utils.sleep(tmpVar * (1 + EchoProtocolManager.getInstance().getNeighbours().size()));
// Logger.getInstance().debug("Updating eu.funinnumbers.station event: " + i + "/" +
// eventBuffer.size());
}
}
}
/**
* Tries to send an event to it's recipient. If there is no connection to some
* eu.funinnumbers.station event is saved in the event buffer.
*
* @param event the event to be sent
*/
public synchronized void sendEvent(final Event event) { // NOPMD
// Check if event should be sent to a Battle FGStationApp (checking type? id?)
if (EchoProtocolManager.getInstance().getMyStation().isActive()) {
try {
// Creates a broadcast Datagram Connection
dgConnection =
(DatagramConnection)
Connector.open(
"radiogram://"
+ EchoProtocolManager.getInstance().getMyStation().getAddress().longValue()
+ ":"
+ DTSPORT);
// Creates a Datagram using the above Connection
final Datagram datagram = dgConnection.newDatagram(dgConnection.getMaximumLength());
// Clean the Datagram
datagram.reset();
// Convert event to byte Array
final byte[] eventArray = event.toByteArray();
// Send Class Type
datagram.writeUTF(event.getClass().getName());
// Send length
datagram.writeInt(eventArray.length);
// Send array
datagram.write(eventArray, 0, eventArray.length);
// Send the datagram
dgConnection.send(datagram);
dgConnection.close();
// There was a succefull update attempt after a failed one.
if (failedUpdate) {
Logger.getInstance().debug("Connection to eu.funinnumbers.station now seems to be OK");
failedUpdate = false;
// Try to empty events buffer again
emptyEventBuffer();
}
Logger.getInstance().debug("Event sent succefully");
} catch (Exception ex) {
Logger.getInstance().debug("Unable to send event", ex);
Logger.getInstance().debug("Adding event to storage: " + event.getDescription());
// Close the open connection
setDisconnected();
// The attempt has failed
failedUpdate = true;
// Add event back to storage
StorageService.getInstance().add(event);
// FinnLogger.getInstance().increaseStoredEvents();
}
} else if (storageEnabled) {
Logger.getInstance().debug("The connection seems to be inactive. Saving to buffer");
// Add event to the corresponding recordstore
StorageService.getInstance().add(event);
// FinnLogger.getInstance().increaseStoredEvents();
} else {
Logger.getInstance().debug("Event lost!!!");
}
}