1 | package de.ugoe.cs.eventbench.web.commands;
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2 |
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3 | import java.io.File;
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4 | import java.io.FileReader;
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5 | import java.security.InvalidParameterException;
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6 | import java.text.SimpleDateFormat;
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7 | import java.util.ArrayList;
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8 | import java.util.Date;
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9 | import java.util.HashMap;
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10 | import java.util.LinkedList;
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11 | import java.util.List;
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12 | import java.util.Map;
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13 |
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14 | import de.ugoe.cs.eventbench.data.Event;
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15 | import de.ugoe.cs.eventbench.web.data.WebEvent;
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16 | import de.ugoe.cs.util.console.Command;
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17 | import de.ugoe.cs.util.console.Console;
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18 |
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19 | public class CMDloadSessionsFromClickstream implements Command {
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20 |
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21 | @Override
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22 | public void run(List<Object> parameters) {
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23 | // TODO Auto-generated method stub
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24 | if( parameters.size() < 2 ) {
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25 | throw new InvalidParameterException();
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26 | }
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27 | String source = (String) parameters.get(0);
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28 |
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29 | // TODO needs to be variable
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30 | long timeout = 3600000; // 1 hour session-timeout
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31 |
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32 | try { // TODO dummy try/catch block
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33 | File f = new File(source);
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34 | FileReader reader = new FileReader(f);
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35 | char[] buffer = new char[(int) f.length()];
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36 | reader.read(buffer);
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37 | reader.close();
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38 | String[] lines = (new String(buffer)).split("\n");
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39 |
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40 | Map<String, List<Integer>> cookieSessionMap = new HashMap<String, List<Integer>>();
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41 | int lastId = -1;
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42 |
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43 | List<List<WebEvent>> sessions = new ArrayList<List<WebEvent>>();
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44 |
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45 | SimpleDateFormat dateFormat = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
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46 |
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47 | for( int i=0; i<lines.length ; i++ ) {
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48 | String[] values = lines[i].split(" ");
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49 |
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50 | // use cookie as session identifier
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51 | int cookieStart = values[0].lastIndexOf('.');
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52 | String cookie = values[0].substring(cookieStart+1);
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53 | String dateString = values[1].substring(1)+" "+values[2].substring(0, values[2].length()-1);
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54 | long timestamp = dateFormat.parse(dateString).getTime();
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55 | String uri = values[3];
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56 |
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57 | List<Integer> sessionIds = cookieSessionMap.get(cookie);
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58 | if( sessionIds==null ) {
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59 | sessionIds = new ArrayList<Integer>();
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60 | // start new session
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61 | sessionIds.add(++lastId);
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62 | cookieSessionMap.put(cookie, sessionIds);
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63 | sessions.add(new LinkedList<WebEvent>());
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64 | }
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65 | Integer lastSessionIndex = sessionIds.get(sessionIds.size()-1);
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66 | List<WebEvent> lastSession = sessions.get(lastSessionIndex);
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67 | long lastEventTime = timestamp;
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68 | if( !lastSession.isEmpty() ) {
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69 | lastEventTime = lastSession.get(lastSession.size()-1).getTimestamp();
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70 | }
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71 | if( timestamp-lastEventTime>timeout ) {
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72 | sessionIds.add(++lastId);
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73 | List<WebEvent> newSession = new LinkedList<WebEvent>();
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74 | newSession.add(new WebEvent(uri, timestamp));
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75 | sessions.add(newSession);
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76 | } else {
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77 | lastSession.add(new WebEvent(uri, timestamp));
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78 | }
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79 | }
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80 | Console.traceln(sessions.toString());
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81 | } catch(Exception e) {
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82 | e.printStackTrace();
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83 | }
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84 |
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85 | }
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86 |
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87 | @Override
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88 | public void help() {
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89 | // TODO Auto-generated method stub
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90 |
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91 | }
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92 |
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93 | }
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