1 |
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2 | package org.greenstone.server;
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3 |
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4 | import java.awt.Dimension;
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5 | import java.awt.Toolkit;
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6 | import java.io.BufferedReader;
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7 | import java.io.File;
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8 | import java.io.FileInputStream;
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9 | import java.io.InputStreamReader;
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10 | import java.util.Properties;
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11 |
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12 | import org.apache.log4j.*;
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13 |
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14 | import org.greenstone.gsdl3.util.Dictionary;
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15 |
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16 | public abstract class BaseServer
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17 | {
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18 | static protected String START_CMD;
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19 | static protected String RESTART_CMD;
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20 | static protected String CONFIGURE_CMD;
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21 | static protected String STOP_CMD;
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22 |
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23 | static protected final int SERVER_STARTED = 0;
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24 | static protected final int SERVER_START_FAILED = 1;
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25 | static protected final int BROWSER_LAUNCHED = 2;
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26 | static protected final int BROWSER_LAUNCH_FAILED = 3;
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27 | static protected final int START_SERVER = 4;
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28 |
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29 | static protected Properties config_properties;
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30 | static protected Logger logger_;
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31 |
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32 | static public File config_properties_file;
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33 | static public Dictionary dictionary;
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34 | static public BaseProperty Property;
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35 |
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36 | protected int server_state_ = -1;
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37 | protected boolean configure_required_ = true;
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38 | protected String gsdl_home;
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39 | protected String logs_folder;
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40 | protected boolean start_browser;
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41 |
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42 | protected BaseServerControl server_control_;
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43 |
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44 | protected BaseServer(String gsdl_home, String lang, String config_properties_path, String logs)
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45 | {
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46 | this.gsdl_home = gsdl_home;
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47 | // expand the relative location of the logs folder
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48 | this.logs_folder = this.gsdl_home+File.separator+logs;
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49 |
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50 | // make sure we write to the correct logs
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51 | initLogger();
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52 | logger_ = Logger.getLogger(BaseServer.class.getName());
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53 |
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54 | config_properties_file = new File(config_properties_path);
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55 |
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56 | if (!config_properties_file.exists()) {
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57 | logger_.fatal("Can't find configuration file "+config_properties_path);
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58 | System.exit(1);
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59 | }
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60 |
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61 | config_properties = new Properties();
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62 | reloadConfigProperties();
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63 |
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64 | dictionary = new Dictionary("server", lang, this.getClass().getClassLoader());
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65 | }
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66 |
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67 | public void autoStart()
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68 | {
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69 | String auto_start = config_properties.getProperty(BaseServer.Property.AUTOSTART, "true");
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70 | if (auto_start.equals("true") || auto_start.equals("1")) {
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71 | String start_browser = config_properties.getProperty(BaseServer.Property.START_BROWSER, "true");
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72 |
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73 | if (start_browser.equals("true") || start_browser.equals("1")) {
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74 | restart();
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75 | }
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76 | else{
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77 | start();
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78 | }
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79 |
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80 | server_control_.setState(java.awt.Frame.ICONIFIED); // minimise the server interface window
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81 | } else {
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82 | if (configure_required_){
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83 | server_control_.displayMessage(dictionary.get("ServerControl.Configuring"));
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84 | int state = runTarget(CONFIGURE_CMD);
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85 |
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86 | if (state != RunTarget.SUCCESS){
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87 | recordError(CONFIGURE_CMD);
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88 | }
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89 | }
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90 | reload(); // browser URL or other important properties may not yet be initialised
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91 | configure_required_ = false;
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92 |
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93 | server_state_ = START_SERVER;
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94 | server_control_.updateControl();
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95 | }
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96 | }
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97 |
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98 | // package access methods
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99 | BaseServerControl getServerControl() {
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100 | return server_control_;
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101 | }
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102 |
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103 | protected int getServerState()
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104 | {
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105 | return server_state_;
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106 | }
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107 |
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108 | // override to write to the correct logs
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109 | protected void initLogger() {}
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110 |
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111 | protected abstract int runTarget(String cmd);
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112 | public abstract String getBrowserURL();
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113 | public abstract void reload(); // reload properties, since they may have changed
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114 | protected void preStop() {}
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115 | protected void postStart() {}
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116 |
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117 | public void reconfigRequired()
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118 | {
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119 | configure_required_ = true;
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120 | }
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121 |
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122 | public void start()
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123 | {
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124 | int state = -1;
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125 | server_state_ = -1;
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126 | server_control_.updateControl();
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127 |
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128 | server_control_.displayMessage(dictionary.get("ServerControl.Starting"));
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129 | stop(true); // silent, no messages displayed
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130 |
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131 | // reconfigure if necessary
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132 | if (configure_required_){
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133 | server_control_.displayMessage(dictionary.get("ServerControl.Configuring"));
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134 | state = runTarget(CONFIGURE_CMD);
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135 |
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136 | if (state != RunTarget.SUCCESS){
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137 | recordError(CONFIGURE_CMD);
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138 | }
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139 | reload(); // work out the browserURL again
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140 | configure_required_ = false;
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141 | }
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142 | else{
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143 | recordSuccess(CONFIGURE_CMD);
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144 | }
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145 |
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146 | try{
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147 | Thread.sleep(5000);
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148 | } catch(Exception e) {
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149 | logger_.error("Exception trying to sleep: " + e);
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150 | }
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151 | state = runTarget(START_CMD);
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152 |
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153 | if (state != RunTarget.SUCCESS){
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154 | recordError(START_CMD);
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155 | server_state_ = SERVER_START_FAILED;
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156 | }
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157 | else{
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158 | recordSuccess(START_CMD);
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159 | server_state_ = SERVER_STARTED;
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160 | postStart();
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161 | }
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162 |
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163 | server_control_.updateControl();
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164 | }
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165 |
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166 | protected void recordError(String message){
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167 | message = dictionary.get("ServerControl.Error",new String[]{message,logs_folder});
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168 | server_control_.displayMessage(message);
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169 | logger_.error(dictionary.get("ServerControl.Failed",new String[]{message}));
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170 | }
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171 |
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172 |
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173 | protected void recordError(String message, Exception e){
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174 | message = dictionary.get("ServerControl.Error",new String[]{message,logs_folder});
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175 | server_control_.displayMessage(message);
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176 | logger_.error(dictionary.get("ServerControl.Failed",new String[]{message}),e);
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177 | }
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178 |
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179 | protected void recordSuccess(String message){
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180 | message = dictionary.get("ServerControl.Success",new String[]{message});
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181 | server_control_.displayMessage(message);
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182 | logger_.info(message);
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183 | }
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184 |
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185 | public void launchBrowser() {
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186 | server_state_ = -1;
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187 | server_control_.updateControl();
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188 | String message = dictionary.get("ServerControl.LaunchingBrowser");
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189 | server_control_.displayMessage(message);
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190 | String url = getBrowserURL();
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191 | //recordError("**** browserURL: " + url);
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192 | BrowserLauncher launcher = new BrowserLauncher(config_properties.getProperty(BaseServer.Property.BROWSER_PATH, ""),
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193 | url,
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194 | dictionary.get("ServerSettings.NoBrowserFound"),
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195 | dictionary.get("ServerSettings.BrowserLaunchFailed"));
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196 | logger_.info(message);
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197 |
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198 | launcher.start();
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199 |
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200 | //wait for a while
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201 | while(launcher.getBrowserState() == -1){
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202 | try{
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203 | Thread.sleep(3000);
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204 | }
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205 | catch(Exception e){
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206 | logger_.error(e);
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207 | }
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208 | }
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209 |
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210 | if (launcher.getBrowserState() != BrowserLauncher.LAUNCHSUCCESS ){
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211 | recordError(dictionary.get("ServerControl.LaunchBrowser"));
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212 | server_state_ = BROWSER_LAUNCH_FAILED;
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213 | }
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214 | else{
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215 | recordSuccess(dictionary.get("ServerControl.LaunchBrowser"));
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216 | server_state_ = BROWSER_LAUNCHED;
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217 | }
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218 |
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219 | server_control_.updateControl();
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220 | }
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221 |
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222 | public void restart(){
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223 | start();
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224 | if (server_state_ == SERVER_STARTED){
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225 | launchBrowser();
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226 | }
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227 | }
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228 |
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229 | // Preserving the current behaviour of stop() which is to
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230 | // display the message on stopping
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231 | public void stop() {
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232 | stop(false);
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233 | }
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234 |
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235 | public void stop(boolean silent) {
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236 | preStop();
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237 | if(!silent) {
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238 | server_control_.displayMessage(dictionary.get("ServerControl.Stopping"));
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239 | }
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240 | int state = runTarget(STOP_CMD);
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241 |
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242 | if (state != RunTarget.SUCCESS){
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243 | recordError(STOP_CMD);
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244 | }
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245 | else{
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246 | recordSuccess(STOP_CMD);
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247 | }
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248 |
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249 | }
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250 |
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251 | public void reloadConfigProperties() {
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252 | try {
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253 | FileInputStream in = new FileInputStream(config_properties_file);
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254 |
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255 | if (in != null) {
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256 | logger_.info("loading configuration properties: " + config_properties_file);
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257 | config_properties.load(in);
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258 | in.close();
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259 | } else {
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260 | logger_.error("Couldn't load configuration properties from " + config_properties_file + "!");
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261 | }
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262 | } catch (Exception e) {
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263 | logger_.error("Exception trying to reload configuration properties " +config_properties_file + ": " +e);
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264 | }
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265 |
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266 | }
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267 |
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268 | }
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