/** Reads the remote service (http lookup) and send updated data to JMS bus */
@Scheduled(fixedRate = 1000)
private void onTick() {
// Get transport positions from the source
String positions = getTransportPositions();
// Connectivity OK, let's go with agent processing
if (positions == null || positions.isEmpty()) {
logger.warn("No transport positions readed!");
return;
}
String[] lines = positions.split(LINE_SEPARATOR);
if (lines.length == 0) {
logger.warn("Could not split different lines from positions result string");
return;
}
String[] attr;
float latitude, longitude;
int orientation;
for (int i = 0; i < lines.length; i++) {
attr = lines[i].split(FIELD_SEPARATOR);
if (attr.length < 5) {
logger.warn("Could not split different fields with ';' from line result: {}", lines[i]);
continue;
}
latitude = 0f;
longitude = 0f;
orientation = 0;
String id = EMPTY_IDENTIFIER;
String line = EMPTY_IDENTIFIER;
try {
latitude = Float.valueOf(attr[3]);
longitude = Float.valueOf(attr[2]);
line = attr[1];
id = attr[0];
orientation = Integer.valueOf(attr[4]);
} catch (Exception e) {
logger.warn(
"Could not parse result string for position data: {}. Exception: {}", positions, e);
continue;
}
int mod = orientation % 45;
if (mod < 23) orientation -= mod;
else orientation += (45 - mod);
if (orientation == 360) orientation = 0;
boolean changed = false;
TransportInfo transportInfo;
if (transports.containsKey(id)) {
transportInfo = transports.get(id);
if (transportInfo.isOrientationDiferent(orientation)
|| transportInfo.isPositionDiferent(latitude, longitude)
|| transportInfo.isLineDiferent(line)) changed = true;
} else {
transportInfo = new TransportInfo();
transportInfo.setId(id);
transportInfo.setLine(line);
transports.put(id, transportInfo);
changed = true;
}
if (changed) {
transportInfo.setLatitude(latitude);
transportInfo.setLongitude(longitude);
transportInfo.setOrientation(orientation);
transportInfo.setLastupdate(System.currentTimeMillis());
if (!transportInfo.isLineDiferent(line)) {
line = EMPTY_IDENTIFIER;
} else {
transportInfo.setLine(line);
}
// Send JMS Message
sendBusPosition(line, id, latitude, longitude, orientation);
}
}
Vector<String> idsToRemove = new Vector<String>();
for (TransportInfo info : transports.values()) {
if ((System.currentTimeMillis() - info.getLastupdate()) > UPDATE_TIMEOUT) {
idsToRemove.add(info.getId());
}
}
for (String id : idsToRemove) {
transports.remove(id);
}
}
