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//---PACKAGE DECLARATION--- |
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package uk.ac.ukc.iscream.rootfilter; |
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//---IMPORTS--- |
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import uk.ac.ukc.iscream.util.*; |
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import uk.ac.ukc.iscream.core.*; |
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import uk.ac.ukc.iscream.componentmanager.*; |
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import uk.ac.ukc.iscream.clientinterface.*; |
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/** |
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* @author $Author$ |
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* @version $Id$ |
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*/ |
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public class RootFilter implements uk.ac.ukc.iscream.util.Component { |
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public class RootFilter implements Component { |
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//---FINAL ATTRIBUTES--- |
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* This starts the Root Filter for the system |
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*/ |
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public void start() throws ComponentStartException { |
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// get references to key objects |
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_refman = ReferenceManager.getInstance(); |
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_logger = ReferenceManager.getInstance().getLogger(); |
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_logger.write(toString(), Logger.SYSINIT, "coming up"); |
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// configuration variables we require |
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String ourName = null; |
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String realInterface = null; |
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String dbInterface = null; |
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int queueMonitorInterval = 0; |
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Configuration config = _refman.getCM().getConfiguration("RootFilter"); |
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if (config == null) { |
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System.err.println("CRITICAL:Unable to obtain configuration" + |
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"\n Advise you check the i-scream log for more information."); |
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_logger.write(toString(), Logger.FATAL, "ERROR - unable to obtain configuration"); |
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System.exit(1); |
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} else { |
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throw new ComponentStartException("Unable to obtain configuration for component"); |
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} |
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else { |
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try { |
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// get the configuration properties we need |
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ourName = config.getProperty("RootFilter.name"); |
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queueMonitorInterval = Integer.parseInt(config.getProperty("Queue.MonitorInterval")); |
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} catch (org.omg.CORBA.MARSHAL e) { |
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throw new ComponentStartException("Unable to obtain requried configuration property for component"); |
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} |
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try { |
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// get the optional configuration properties |
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realInterface = config.getProperty("RootFilter.realtimeInterfaceName"); |
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dbInterface = config.getProperty("RootFilter.dbInterfaceName"); |
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} catch (org.omg.CORBA.MARSHAL e) { |
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System.err.println ("CRITICAL:Unable to obtain required configuration property" + |
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"\n Advise you check the i-scream log for more information."); |
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_logger.write(toString(), Logger.FATAL, "ERROR - required configuration property not present"); |
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System.exit(1); |
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// we can ignore that fact |
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} |
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} |
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// now we have the name of the Root Filter we set it |
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NAME = ourName; |
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} |
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Queue queue = new Queue(); |
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// startup a monitor on this queue, every minute |
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String queueName = NAME + " RootFilter"; |
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queue.startMonitor(queueMonitorInterval*1000, queueName); |
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if (realInterface == null) { |
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_logger.write(toString(), Logger.DEBUG, "hooked to interfaces - " + dbInterface); |
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_refman.bindToOrb(filterServant, "iscream.Filter." + RootFilter.NAME); |
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_logger.write(toString(), Logger.SYSINIT, "started"); |
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} |
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/** |
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* This holds a reference to the |
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* system logger that is being used. |
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*/ |
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private Logger _logger = ReferenceManager.getInstance().getLogger(); |
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private Logger _logger; |
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/** |
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* A reference to the reference manager in use |
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*/ |
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private ReferenceManager _refman = ReferenceManager.getInstance(); |
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private ReferenceManager _refman; |
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//---STATIC ATTRIBUTES--- |
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