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import org.omg.CORBA.*; |
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import org.omg.CosNaming.*; |
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import org.omg.PortableServer.*; |
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import java.util.*; |
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import java.io.*; |
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/** |
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* The main class for the CORE of the I-Scream system. |
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*/ |
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public static final String REVISION = "$Revision$"; |
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/** |
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* The toString() of this class |
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* As it won't be instatiated, this is needed. |
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*/ |
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public static final String toString = "CORE(" + REVISION.substring(11, REVISION.length() - 2) + ")"; |
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|
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/** |
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* The default location of the properties file for the system |
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*/ |
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public static final String DEFAULTPROPERTIES = "default.properties"; |
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|
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//---STATIC METHODS--- |
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/** |
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*/ |
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public static void main(String[] args) { |
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System.out.println("--- I-Scream ---"); |
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< |
|
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// can't have a real toString() :) |
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String toString = "CORE(" + REVISION.substring(11, REVISION.length() - 2) + ")"; |
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System.out.println(toString + ": coming up"); |
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> |
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// get the command line args |
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String defaultProperties = DEFAULTPROPERTIES; |
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if (args.length > 0) { |
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if (args[0].equals("-l")) { |
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defaultProperties = args[1]; |
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} else if (args[0].equals("-h")) { |
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usage(); |
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} else { |
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usage(); |
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} |
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} |
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|
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// load the default properties file into the system properties |
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System.out.println(toString + ": initialising - using " + defaultProperties); |
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try { |
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Properties initProperties = new Properties(System.getProperties()); |
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initProperties.load(new FileInputStream(new File(defaultProperties))); |
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System.setProperties(initProperties); |
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|
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} catch (Exception e) { |
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System.err.println(toString + ": ERROR " + e.getMessage()); |
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usage(); |
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} |
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|
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// continue to bring the system up |
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System.out.println(toString + ": coming up"); |
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try { |
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// start the ORB |
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ORB orb = ORB.init(args, null); |
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NamingContextExt ncRef = NamingContextExtHelper.narrow(objRef); |
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// start and bind each server in turn |
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// create the logger (either Screen or File) |
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ScreenLoggerServant loggerRef = new ScreenLoggerServant(); |
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//FileLoggerServant loggerRef = new FileLoggerServant("core.log"); |
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// and advertise it to the naming context |
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|
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// work out which logger to use |
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String whichLogger = System.getProperty("uk.ac.ukc.iscream.LoggerClass", defaultLogger); |
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|
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// construct the relevant LoggerImpl |
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LoggerImpl loggerImplRef = (LoggerImpl) ClassLoader.getSystemClassLoader().loadClass(whichLogger).newInstance(); |
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|
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// setup and bind the LoggerServant |
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LoggerServant loggerRef = new LoggerServant(loggerImplRef); |
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objRef = poa.servant_to_reference(loggerRef); |
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ncRef.bind(ncRef.to_name("iscream.Logger"), objRef); |
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< |
// get a ref to the logger servant as a Logger reference |
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// get a reference to the servant as a Logger |
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Logger logRef = LoggerHelper.narrow(objRef); |
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< |
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> |
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// create the Configurator |
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ConfiguratorServant configuratorRef = new ConfiguratorServant(poa, logRef); |
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String configLocation = System.getProperty("uk.ac.ukc.iscream.ConfigurationLocation", defaultConfigPath); |
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ConfigurationManagerServant configManRef = new ConfigurationManagerServant(poa, logRef); |
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|
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// and advertise it to the naming context |
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< |
objRef = poa.servant_to_reference(configuratorRef); |
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< |
ncRef.bind(ncRef.to_name("iscream.Configurator"), objRef); |
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> |
objRef = poa.servant_to_reference(configManRef); |
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> |
ncRef.bind(ncRef.to_name("iscream.ConfigurationManager"), objRef); |
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// start the POA off |
| 120 |
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poa.the_POAManager().activate(); |
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|
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< |
logRef.write(toString, "started"); |
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> |
logRef.write(toString, Logger.SYSINIT, "started"); |
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// now we are running, we just need to serve |
| 125 |
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// so we ask the orb to block for us until it has finished |
| 140 |
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} |
| 141 |
|
} |
| 142 |
|
} |
| 143 |
+ |
|
| 144 |
+ |
/** |
| 145 |
+ |
* A simple method to print the usage of this class. |
| 146 |
+ |
* It never returns, but instead exits to the system |
| 147 |
+ |
* with a value 1, to indicate the system did not start |
| 148 |
+ |
* properly. |
| 149 |
+ |
*/ |
| 150 |
+ |
public static void usage() { |
| 151 |
+ |
System.out.println("USAGE: java Core.java <option>"); |
| 152 |
+ |
System.out.println("WHERE <option>:"); |
| 153 |
+ |
System.out.println(" -l <filename> - the location of initial system properties"); |
| 154 |
+ |
System.out.println(" -h - this help screen"); |
| 155 |
+ |
System.exit(1); |
| 156 |
+ |
} |
| 157 |
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|
| 158 |
|
//---CONSTRUCTORS--- |
| 159 |
|
|
| 164 |
|
//---ACCESSOR/MUTATOR METHODS--- |
| 165 |
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|
| 166 |
|
//---ATTRIBUTES--- |
| 167 |
< |
|
| 167 |
> |
|
| 168 |
|
//---STATIC ATTRIBUTES--- |
| 169 |
+ |
|
| 170 |
+ |
/** |
| 171 |
+ |
* Default logger, to be used when one is not provided |
| 172 |
+ |
* in the configuration. |
| 173 |
+ |
*/ |
| 174 |
+ |
private static final String defaultLogger = "ScreenLogger"; |
| 175 |
+ |
|
| 176 |
+ |
/** |
| 177 |
+ |
* Default configPath, to be used when one is not provided |
| 178 |
+ |
* in the configuration. |
| 179 |
+ |
*/ |
| 180 |
+ |
private static final String defaultConfigPath = "."; |
| 181 |
|
|
| 182 |
|
} |
