Mercurial > hg > monetdb-java

annotate src/main/java/nl/cwi/monetdb/merovingian/SabaothDB.java @ 102:08bc9009d190 embedded

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Merged with default
author Pedro Ferreira <pedro.ferreira@monetdbsolutions.com>
date Fri, 13 Jan 2017 18:16:30 +0100 (2017-01-13)
parents 6f74e01c57da b9b35ca2eec2
children 89c285fc0a49
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1 /*
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2 * This Source Code Form is subject to the terms of the Mozilla Public
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3 * License, v. 2.0. If a copy of the MPL was not distributed with this
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4 * file, You can obtain one at http://mozilla.org/MPL/2.0/.
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5 *
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b9b35ca2eec2 Updated copyright year to 2017 in *.java files and MonetDriver.java.in and build.xml and version.sh
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6 * Copyright 1997 - July 2008 CWI, August 2008 - 2017 MonetDB B.V.
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7 */
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8
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9 package nl.cwi.monetdb.merovingian;
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10
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17fbaf2635bb Expand import java.*.* statements
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11 import java.util.Date;
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12
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13 /**
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14 * Implementation of the Sabaoth C-struct as Java object.
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15 *
0
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16 * This Class implements a parser for the string representation of a
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17 * sabaoth information struct as returned by monetdbd.
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18 * <br />
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19 * Currently this class implements version 1 and 2 of the sabdb
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20 * serialisation.
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21 *
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22 * @version 2.0
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23 */
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24 public class SabaothDB {
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25 /** The name of the database */
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26 private String dbname;
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27 /** The URI how to connect to this database, or null if not shared */
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28 private String uri;
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29 /** Whether or not the database is under maintenance */
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30 private boolean locked;
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31 /** The state of this database, one of SABdbState */
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32 private SABdbState state;
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33 /** A list of Strings representing the available scenarios of this database */
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34 private String[] scenarios;
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35 /** The number of times this database was started */
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36 private int startCounter;
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37 /** The number of times this database was stopped */
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38 private int stopCounter;
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39 /** The number of times this database has crashed */
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40 private int crashCounter;
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41 /** The number of seconds this database was running on average */
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42 private long avgUptime;
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43 /** The maximum number of seconds this database was running */
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44 private long maxUptime;
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45 /** The minimum number of seconds this database was running */
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46 private long minUptime;
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47 /** The last time this database crashed, null if never */
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48 private Date lastCrash;
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49 /** The last time this database was started, null if never */
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50 private Date lastStart;
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51 /** The last time this database was stopped, null if never */
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52 private Date lastStop;
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53 /** Whether the last start was a crash */
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54 private boolean crashAvg1;
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55 /** Average of crashes in the last 10 start attempts */
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56 private double crashAvg10;
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57 /** Average of crashes in the last 30 start attempts */
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58 private double crashAvg30;
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59
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60 /** The serialised format header */
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61 private final String sabdbhdr = "sabdb:";
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62
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63 /** Sabaoth state enumeration */
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64 public enum SABdbState {
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65 SABdbIllegal (0), SABdbRunning (1), SABdbCrashed (2), SABdbInactive(3), SABdbStarting(4);
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66
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67 private final int cValue;
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68
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69 SABdbState(int cValue) {
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70 this.cValue = cValue;
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71 }
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72
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73 public int getcValue() {
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74 return(cValue);
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75 }
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76
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77 static SABdbState getInstance(int val) throws IllegalArgumentException {
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78 /* using this syntax because I can't find examples that do
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79 * it without it */
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80 for (SABdbState s : SABdbState.values()) {
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81 if (s.getcValue() == val) {
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82 return(s);
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83 }
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84 }
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85 throw new IllegalArgumentException("No such state with value: " + val);
0
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86 }
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87 }
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88
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89 /**
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90 * Constructs a new SabaothDB object from a String.
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91 *
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92 * @param sabdb the serialised sabdb C-struct
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93 */
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94 public SabaothDB(String sabdb) throws IllegalArgumentException {
0
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95 if (sabdb == null)
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96 throw new IllegalArgumentException("String is null");
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97 if (!sabdb.startsWith(sabdbhdr))
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98 throw new IllegalArgumentException("String is not a Sabaoth struct");
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99 String[] parts = sabdb.split(":", 3);
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100 if (parts.length != 3)
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101 throw new IllegalArgumentException("String seems incomplete, " +
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102 "expected 3 components, only found " + parts.length);
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103 int protover;
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104 try {
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105 protover = Integer.parseInt(parts[1]);
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106 } catch (NumberFormatException e) {
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107 throw new IllegalArgumentException("Illegal protocol version: " +
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108 parts[1]);
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109 }
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110 if (protover != 1 && protover != 2)
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111 throw new IllegalArgumentException("Unsupported protocol version: " + protover);
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112 sabdb = parts[2];
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113 parts = sabdb.split(",", -2);
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114 if (protover == 1 && parts.length != 16 || protover == 2 && parts.length != 17)
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115 throw new IllegalArgumentException("String seems wrong, " +
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116 "unexpected number of components: " + parts.length);
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117
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118 /* Sabaoth sabdb struct */
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119 int pc = 0;
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120 this.dbname = parts[pc++];
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121 if (protover == 1) {
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122 this.uri = "<unknown>";
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123 int lastslash = this.dbname.lastIndexOf('/');
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124 if (lastslash == -1)
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125 throw new IllegalArgumentException("invalid path (needs slash): " + this.dbname);
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126 this.dbname = this.dbname.substring(lastslash + 1);
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127 } else {
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128 this.uri = parts[pc++];
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129 }
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130 this.locked = parts[pc++].equals("1");
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131 this.state = SABdbState.getInstance(Integer.parseInt(parts[pc++]));
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132 this.scenarios = parts[pc++].split("'");
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133 if (protover == 1) /* skip connections */
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134 pc++;
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135 /* Sabaoth sabuplog struct */
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136 this.startCounter = Integer.parseInt(parts[pc++]);
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137 this.stopCounter = Integer.parseInt(parts[pc++]);
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138 this.crashCounter = Integer.parseInt(parts[pc++]);
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139 this.avgUptime = Long.parseLong(parts[pc++]);
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140 this.maxUptime = Long.parseLong(parts[pc++]);
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141 this.minUptime = Long.parseLong(parts[pc++]);
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142 long t = Long.parseLong(parts[pc++]);
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143 if (t == -1) {
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144 this.lastCrash = null;
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145 } else {
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146 this.lastCrash = new Date(t * 1000);
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147 }
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148 t = Long.parseLong(parts[pc++]);
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149 if (t == -1) {
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150 this.lastStart = null;
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151 } else {
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152 this.lastStart = new Date(t * 1000);
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153 }
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154 if (protover != 1) {
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155 t = Long.parseLong(parts[pc++]);
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156 if (t == -1) {
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157 this.lastStop = null;
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158 } else {
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159 this.lastStop = new Date(t * 1000);
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160 }
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161 } else {
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162 this.lastStop = null;
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163 }
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164 this.crashAvg1 = parts[pc++].equals("1");
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165 this.crashAvg10 = Double.parseDouble(parts[pc++]);
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166 this.crashAvg30 = Double.parseDouble(parts[pc++]);
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167 }
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168
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169 public String getName() {
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170 return(dbname);
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171 }
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172
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173 public String getURI() {
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174 return(uri);
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175 }
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176
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177 public boolean isLocked() {
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178 return(locked);
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179 }
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180
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181 public SABdbState getState() {
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182 return(state);
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183 }
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184
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185 public String[] getScenarios() {
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186 return(scenarios);
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187 }
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188
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189 public int getStartCount() {
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190 return(startCounter);
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191 }
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192
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193 public int getStopCount() {
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194 return(stopCounter);
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195 }
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196
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197 public int getCrashCount() {
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198 return(crashCounter);
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199 }
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200
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201 public long getAverageUptime() {
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202 return(avgUptime);
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203 }
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204
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205 public long getMaximumUptime() {
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206 return(maxUptime);
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207 }
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208
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209 public long getMinimumUptime() {
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210 return(minUptime);
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211 }
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212
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213 public Date lastCrashed() {
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214 return(lastCrash);
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215 }
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216
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217 public Date lastStarted() {
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218 return(lastStart);
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219 }
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220
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221 public Date lastStopped() {
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222 return(lastStop);
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223 }
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224
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225 public boolean lastStartWasSuccessful() {
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226 return(crashAvg1);
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227 }
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228
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229 public double getCrashAverage10() {
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230 return(crashAvg10);
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231 }
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232
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233 public double getCrashAverage30() {
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234 return(crashAvg30);
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235 }
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236 }