Mercurial > hg > blitz_stable

annotate src/org/dancres/blitz/tools/dash/ChartPanel.java @ 35:6f68e94c1fb8 default tip

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Add CondensedStats monitoring utility, equivalent to vmstat
author Dominic Cleal <dominic-cleal@cdo2.com>
date Thu, 05 Aug 2010 11:07:25 +0100
parents 3dc0c5604566
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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0
3dc0c5604566 Initial checkin of blitz 2.0 fcs - no installer yet.
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1 package org.dancres.blitz.tools.dash;
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2
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3 import java.awt.BorderLayout;
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4 import java.util.ArrayList;
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5 import java.util.HashMap;
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6 import java.util.Map;
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7 import javax.swing.JPanel;
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8
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9 import org.dancres.blitz.tools.dash.graph.*;
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10
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11 public class ChartPanel extends JPanel {
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12 private Chart _chart = new Chart();
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13 private Map _lookup = new HashMap();
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14 private long[] _lastValues;
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15 private final int MAX_SIZE = 100;
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16 public ChartPanel() {
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17 setLayout(new BorderLayout());
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18 add(_chart, BorderLayout.CENTER);
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19 }
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20 public void update(String[] names, long[] newValues) {
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21 try {
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22 if (_lastValues == null) {
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23 doUpdate(names, newValues);
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24 }
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25 for (int i = 0; i < newValues.length; i++) {
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26 if (newValues[i] != _lastValues[i]) {
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27 doUpdate(names, newValues);
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28 return;
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29 }
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30 }
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31 } catch (Exception ex) {
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32 ex.printStackTrace();
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33 }
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34 }
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35 private void doUpdate(String[] names, long[] newValues) throws Exception {
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36 _lastValues = newValues;
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37 for (int i = 0; i < newValues.length; i++) {
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38 ArrayList history = (ArrayList) _lookup.get(names[i]);
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39 if (history == null) {
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40 if (newValues.length == 0 && newValues[i] == 0) {
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41 return;
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42 }
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43 if (newValues.length > 0) {
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44 //if they are all zero ommit
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45 boolean ok = false;
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46 for (int j = 0; !ok && j < newValues.length; j++) {
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47 if (newValues[j] > 0) {
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48 ok = true;
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49 }
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50 }
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51 if (!ok) {
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52 return;
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53 }
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54 }
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55
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56 history = new ArrayList();
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57 _lookup.put(names[i], history);
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58 //add twice the first time to get a line
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59 history.add(new Long(newValues[i]));
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60 //first time so add the data
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61 long startVal=0;//newValues[i];// - 1;
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62 //if(startVal<0){
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63 //startVal=0;
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64 //}
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65 addData(names[i], new double[]{startVal, newValues[i]});
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66 } else {
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67
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68 history.add(new Long(newValues[i]));
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69 int n = history.size();
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70 if (n > MAX_SIZE) {
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71 n--;
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72 history.remove(0);
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73
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74 }
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75
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76 double[] data = new double[n];
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77 String[] labels = new String[n];
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78 for (int j = 0; j < n; j++) {
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79 labels[j] = "";
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80 data[j] = ((Long) history.get(j)).longValue();
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81
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82 }
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83 labels[0] = "Last update: " + new java.util.Date();
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84 _chart.setDataAt(i, names[i], data, labels, null);
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85 }
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86 }
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87 _chart.repaint();
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88 }
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89 private void addData(String name, double[] data) throws Exception {
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90 String[] labs = new String[data.length];
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91 labs[0] = "Last update: " + new java.util.Date();
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92 for (int i = 1; i < labs.length; i++) {
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93 labs[i] = "";
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94 }
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95 _chart.addData(name, data, labs);
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96 }
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97 }