/**
* Compile as:
* $ javac -cp .:/usr/local/share/umundo/java/umundo.jar SpatialMapTicker.java
*
* Run as:
* $ java -cp .:/usr/local/share/umundo/java/umundo.jar SpatialMapTicker
*/
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Date;
import java.util.LinkedList;
import java.util.Random;
import org.umundo.core.Greeter;
import org.umundo.core.Message;
import org.umundo.core.Node;
import org.umundo.core.Publisher;
public class SpatialMapTicker {
Node node;
Publisher pub;
Greeter greeter;
ArrayList<Sensor> sensors = new ArrayList<Sensor>();
static ArrayList<SensorMessage> messages = new ArrayList<SensorMessage>();
static Random random = new Random(System.currentTimeMillis());
public class SensorMessage {
public String message;
public int severity;
public SensorMessage(String message, int severity) {
this.message = message;
this.severity = severity;
}
public SensorMessage(String message) {
this.message = message;
this.severity = 3;
}
}
public class Sensor {
@Override
public String toString() {
return "Sensor [id=" + id + ", lat=" + lat + ", lon=" + lon
+ ", html=" + getHTML() + "]";
}
public String id = "";
public Double lat = new Double(0);
public Double lon = new Double(0);
LinkedList<SensorMessage> messages = new LinkedList<SensorMessage>();
public void addMessage(SensorMessage message) {
if (messages.size() > 15)
messages.removeLast();
messages.addFirst(message);
}
public String getHTML() {
StringBuilder sb = new StringBuilder();
for (SensorMessage message : messages) {
sb.append(message.severity);
sb.append(": ");
sb.append(message.message);
sb.append("<br />");
}
return sb.toString();
}
}
public class SensorGreeter extends Greeter {
public void welcome(Publisher publisher, String nodeId, String subId) {
// send all sensors to new subscribers
for (Sensor sensor : sensors) {
Message msg = new Message(); //Message.toSubscriber(subId);
msg.putMeta("id", sensor.id);
msg.putMeta("lat", sensor.lat.toString());
msg.putMeta("lon", sensor.lon.toString());
msg.putMeta("html", sensor.getHTML());
pub.send(msg);
}
}
@Override
public void farewell(Publisher arg0, String nodeId, String subId) {
}
}
public SpatialMapTicker() {
node = new Node();
pub = new Publisher("map/tick");
greeter = new SensorGreeter();
pub.setGreeter(greeter);
node.addPublisher(pub);
double latCenter = 59.32;
double lonCenter = 18.08;
int nrSensors = 15; //(int) (Math.random() * 20);
for (int i = 0; i < nrSensors; i++) {
Sensor sensor = new Sensor();
double latOffset = (Math.random() - 0.5) * 0.3;
double lonOffset = (Math.random() - 0.5) * 0.3;
sensor.id = "Sensor #" + i;
sensor.lat = latCenter + latOffset;
sensor.lon = lonCenter + lonOffset;
sensors.add(sensor);
}
}
public static void main(String[] args) {
SpatialMapTicker ticker = new SpatialMapTicker();
ticker.run();
}
private void run() {
messages.add(new SensorMessage("Oil pressure threshold exceeded"));
messages.add(new SensorMessage("Equipment is on fire"));
messages.add(new SensorMessage("Error #32 in diagnostics unit"));
messages.add(new SensorMessage("Unauthorized startup"));
messages.add(new SensorMessage("Tire pressure too low"));
messages.add(new SensorMessage("Error #145 in diagnostics unit"));
messages.add(new SensorMessage("Unit was moved out of construction site area"));
messages.add(new SensorMessage("Hydraulic pressure exceeding safety limits"));
messages.add(new SensorMessage("Drivers seat belts are not fastened!"));
messages.add(new SensorMessage("Battery recharge cycles exceeded"));
messages.add(new SensorMessage("Unit operated outside recommended paramters"));
while (true) {
try {
Thread.sleep((long) (Math.random() * 300) + 100);
} catch (InterruptedException e) {
e.printStackTrace();
}
Sensor sensor = sensors.get(random.nextInt(sensors.size()));
SensorMessage fault = messages.get(random.nextInt(messages.size()));
Date now = new Date();
SimpleDateFormat sdf = new SimpleDateFormat("HH:mm:ss z");
String nowString = sdf.format(now);
sensor.addMessage(fault);
// System.out.println("Publishing " + sensor);
Message msg = new Message();
msg.putMeta("id", sensor.id);
msg.putMeta("lat", sensor.lat.toString());
msg.putMeta("lon", sensor.lon.toString());
msg.putMeta("html", sensor.getHTML());
msg.putMeta("time", nowString);
msg.putMeta("timeStamp", Long.toString(now.getTime()));
msg.putMeta("message", sensor.messages.getFirst().message);
msg.putMeta("severity", Integer.toString(random.nextInt(10)));
pub.send(msg);
}
}
}