import java.util.HashMap; import java.util.LinkedList; import java.util.Map.Entry; import de.tu_darmstadt.tk.SmartHomeNetworkSim.core.Link; import de.tu_darmstadt.tk.SmartHomeNetworkSim.core.Packet; import de.tu_darmstadt.tk.SmartHomeNetworkSim.core.PacketSniffer; import de.tu_darmstadt.tk.SmartHomeNetworkSim.core.SmartDevice; import de.tu_darmstadt.tk.SmartHomeNetworkSim.core.protocols.packets.MQTT_packet; import de.tu_darmstadt.tk.SmartHomeNetworkSim.core.protocols.packets.Ping_packet; import de.tu_darmstadt.tk.SmartHomeNetworkSim.core.simpleImplementation.SimplePacket; /** * Metric which can be used as PacketSniffer. Will count the number of packets sent per Link. * Furthermore statistics like number of packets sent between different devices, number of packets * per type etc. will be printed to the console. * * @author Andreas T. Meyer-Berg */ public class CountingMetric implements PacketSniffer { @Override public void processPackets(HashMap> packets) { System.out.println("Counting Metric: "); if(packets==null)return; /** * Print all links and their number of packets sent */ for(Entry> e:packets.entrySet()){ if(e == null || e.getKey() == null || e.getValue() == null)continue; //System.out.println(e.getKey().getName()+": "+e.getValue().size()+" Packets"); printStatistics(e.getValue()); } System.out.println(""); } /** * Calculates and prints statistics for the given packets * @param packets Packets which should be evaluated */ private void printStatistics(LinkedList packets){ //Calculate first and last packet time /** * Timestep the first packet was sent */ long minTime = Long.MAX_VALUE; /** * Timestep the last pacekt was sent */ long maxTime = Long.MIN_VALUE; /** * Number of ping packets */ int pingPackets = 0; /** * Number of ping packets */ int mqttPackets = 0; /** * Number of MQTT packets */ int simplePackets = 0; /** * Number of unknown packets */ int unknownPackets = 0; //HashMap for packets per collection HashMap> connections = new HashMap>(); for(Packet p: packets){ minTime = Math.min(minTime, p.getTimestamp()); maxTime = Math.max(maxTime, p.getTimestamp()); if(p instanceof MQTT_packet) mqttPackets++; else if(p instanceof Ping_packet) pingPackets++; else if(p instanceof SimplePacket) simplePackets++; else unknownPackets++; HashMap map = connections.get(p.getSource().getOwner()); if(map == null) map = new HashMap(); //Increment counter for each packet by on. Add HashMap/Numbers if number non existent Integer lastVal = map.get(p.getDestination().getOwner()); int i = lastVal == null?0:lastVal; map.put(p.getDestination().getOwner(), i+1); connections.put(p.getSource().getOwner(), map); } // Print number of packets per Protocol Type System.out.println("In Total "+packets.size()+" Packets were sent."); if(mqttPackets != 0){ if(mqttPackets==packets.size()){ System.out.println("All of them were MQTT packets"); }else{ System.out.println(mqttPackets+ "("+Math.round(mqttPackets*100.0/packets.size())+"%) of them were MQTT packets"); } } if(pingPackets != 0){ if(pingPackets==packets.size()){ System.out.println("All of them were ping packets"); }else{ System.out.println(pingPackets+ "("+Math.round(pingPackets*100.0/packets.size())+"%) of them were ping packets"); } } if(simplePackets != 0){ if(simplePackets==packets.size()){ System.out.println("All of them were simple packets"); }else{ System.out.println(simplePackets+ "("+Math.round(simplePackets*100.0/packets.size())+"%) of them were simple packets"); } } if(unknownPackets != 0){ if(unknownPackets==packets.size()){ System.out.println("All of them were unknown packets"); }else{ System.out.println(unknownPackets+ "("+Math.round(unknownPackets*100.0/packets.size())+"%) of them were unknwon packets"); } } if(minTime<=maxTime) System.out.println("First packet was captured at "+minTime+" ms, and the last at "+maxTime+" ms."); else System.out.println("No packets were captured."); //Print the number of packets per connection for (Entry> e: connections.entrySet()) { String src = e.getKey() == null || e.getKey().getName()==null ? "null":e.getKey().getName(); System.out.println(src + " sent:"); for (Entry f: e.getValue().entrySet()) { String dest = f.getKey() == null || f.getKey().getName()==null ? "null":f.getKey().getName(); System.out.println(f.getValue() + " packets to "+dest); } } } }