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 |
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28 | static protected Properties build_properties;
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29 | static protected Logger logger_;
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30 |
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31 | static public File build_properties_file;
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32 | static public Dictionary dictionary;
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33 | static public BaseProperty Property;
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34 |
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35 | protected int server_state_ = -1;
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36 | protected boolean configure_required_ = true;
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37 | protected String gsdl_home;
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38 | protected BaseServerControl server_control_;
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39 |
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40 | protected BaseServer(String gsdl_home, String lang, String build_properties_path)
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41 | {
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42 | this.gsdl_home = gsdl_home;
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43 |
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44 | // make sure we write to the correct logs
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45 | initLogger();
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46 | logger_ = Logger.getLogger(BaseServer.class.getName());
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47 |
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48 | build_properties_file = new File(build_properties_path);
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49 |
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50 | if (!build_properties_file.exists()) {
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51 | logger_.fatal("Can't find build.properties file "+build_properties_path);
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52 | System.exit(1);
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53 | }
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54 |
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55 | build_properties = new Properties();
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56 | reloadBuildProperties();
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57 |
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58 | dictionary = new Dictionary("server", lang, this.getClass().getClassLoader());
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59 |
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60 | }
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61 |
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62 | public void autoStart()
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63 | {
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64 | String auto_start = build_properties.getProperty(BaseServer.Property.AUTOSTART);
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65 | if (auto_start != null && auto_start.equals("true")) {
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66 | restart();
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67 | }
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68 | else{
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69 | start();
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70 | }
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71 |
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72 | }
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73 |
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74 | // package access method
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75 | BaseServerControl getServerControl() {
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76 | return server_control_;
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77 | }
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78 |
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79 | protected int getServerState()
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80 | {
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81 | return server_state_;
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82 | }
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83 |
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84 | // override to write to the correct logs
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85 | protected void initLogger() {}
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86 |
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87 | protected abstract int runTarget(String cmd);
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88 | public abstract String getBrowserURL();
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89 | public abstract void reload(); // reload properties, since they may have changed
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90 |
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91 | public void reconfigRequired()
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92 | {
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93 | configure_required_ = true;
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94 | }
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95 |
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96 | public void start()
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97 | {
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98 | int state = -1;
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99 | server_state_ = -1;
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100 | server_control_.updateControl();
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101 |
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102 | server_control_.displayMessage(dictionary.get("ServerControl.Starting"));
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103 | stop(true); // silent, no messages displayed
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104 |
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105 | // reconfigure if necessary
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106 | if (configure_required_){
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107 | server_control_.displayMessage(dictionary.get("ServerControl.Configuring"));
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108 | state = runTarget(CONFIGURE_CMD);
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109 |
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110 | if (state != RunTarget.SUCCESS){
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111 | recordError(CONFIGURE_CMD);
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112 | }
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113 | reload();
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114 | configure_required_ = false;
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115 | }
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116 | else{
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117 | recordSuccess(CONFIGURE_CMD);
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118 | }
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119 |
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120 | state = runTarget(START_CMD);
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121 |
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122 | if (state != RunTarget.SUCCESS){
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123 | recordError(START_CMD);
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124 | server_state_ = SERVER_START_FAILED;
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125 |
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126 | }
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127 | else{
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128 | recordSuccess(START_CMD);
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129 | server_state_ = SERVER_STARTED;
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130 | }
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131 |
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132 | server_control_.updateControl();
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133 | }
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134 |
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135 | protected void recordError(String message){
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136 | message = dictionary.get("ServerControl.Error",new String[]{message,gsdl_home});
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137 | server_control_.displayMessage(message);
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138 | logger_.error(dictionary.get("ServerControl.Failed",new String[]{message}));
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139 | }
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140 |
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141 |
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142 | protected void recordError(String message, Exception e){
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143 | message = dictionary.get("ServerControl.Error",new String[]{message,gsdl_home});
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144 | server_control_.displayMessage(message);
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145 | logger_.error(dictionary.get("ServerControl.Failed",new String[]{message}),e);
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146 | }
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147 |
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148 | protected void recordSuccess(String message){
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149 | message = dictionary.get("ServerControl.Success",new String[]{message});
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150 | server_control_.displayMessage(message);
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151 | logger_.info(message);
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152 | }
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153 |
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154 | public void launchBrowser() {
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155 | server_state_ = -1;
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156 | server_control_.updateControl();
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157 | String message = dictionary.get("ServerControl.LaunchingBrowser");
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158 | server_control_.displayMessage(message);
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159 | String url = getBrowserURL();
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160 | //recordError("**** browserURL: " + url);
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161 | BrowserLauncher launcher = new BrowserLauncher(build_properties.getProperty(BaseServer.Property.BROWSER_PATH),url);
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162 | logger_.info(message);
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163 |
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164 | launcher.start();
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165 |
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166 | //wait for a while
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167 | while(launcher.getBrowserState() == -1){
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168 | try{
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169 | Thread.sleep(3000);
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170 | }
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171 | catch(Exception e){
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172 | logger_.error(e);
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173 | }
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174 | }
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175 |
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176 | if (launcher.getBrowserState() != BrowserLauncher.LAUNCHSUCCESS ){
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177 | recordError(dictionary.get("ServerControl.LaunchBrowser"));
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178 | server_state_ = BROWSER_LAUNCH_FAILED;
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179 | }
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180 | else{
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181 | recordSuccess(dictionary.get("ServerControl.LaunchBrowser"));
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182 | server_state_ = BROWSER_LAUNCHED;
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183 | }
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184 |
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185 | server_control_.updateControl();
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186 | }
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187 |
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188 | public void restart(){
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189 | start();
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190 | if (server_state_ == SERVER_STARTED){
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191 | launchBrowser();
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192 | }
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193 | }
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194 |
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195 | // Preserving the current behaviour of stop() which is to
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196 | // display the message on stopping
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197 | public void stop() {
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198 | stop(false);
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199 | }
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200 |
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201 | public void stop(boolean silent) {
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202 | if(!silent) {
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203 | server_control_.displayMessage(dictionary.get("ServerControl.Stopping"));
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204 | }
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205 | int state = runTarget(STOP_CMD);
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206 |
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207 | if (state != RunTarget.SUCCESS){
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208 | recordError(STOP_CMD);
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209 | }
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210 | else{
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211 | recordSuccess(STOP_CMD);
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212 | }
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213 |
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214 | }
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215 |
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216 | public void reloadBuildProperties() {
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217 | try {
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218 | FileInputStream in = new FileInputStream(build_properties_file);
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219 |
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220 | if (in != null) {
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221 | logger_.info("loading build properties");
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222 | build_properties.load(in);
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223 | in.close();
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224 | } else {
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225 | logger_.error("Couldn't load build properties!");
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226 | }
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227 | } catch (Exception e) {
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228 | logger_.error("Exception trying to reload build.properties: "+e);
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229 | }
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230 |
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231 | }
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232 |
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233 | }
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