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//---PACKAGE DECLARATION--- |
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package uk.ac.ukc.iscream.client; |
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package uk.org.iscream.client; |
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//---IMPORTS--- |
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import uk.ac.ukc.iscream.clientinterface.*; |
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import uk.ac.ukc.iscream.componentmanager.*; |
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import uk.ac.ukc.iscream.core.*; |
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import uk.ac.ukc.iscream.util.*; |
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import uk.org.iscream.clientinterface.*; |
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import uk.org.iscream.componentmanager.*; |
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import uk.org.iscream.core.*; |
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import uk.org.iscream.util.*; |
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/** |
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* A startup component for the Local Clients. |
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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 = _refman.getLogger(); |
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_logger.write(toString(), Logger.SYSINIT, "coming up"); |
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// configuration variables we require |
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int queueMonitorInterval = 0; |
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Configuration config = _refman.getCM().getConfiguration("LocalClient"); |
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if (config == null) { |
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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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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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// get a reference to the configuration proxy |
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ConfigurationProxy cp = ConfigurationProxy.getInstance(); |
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// see if these Queue's need a size limit |
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try { |
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int queueSizeLimit = Integer.parseInt(cp.getProperty(NAME, "Queue.SizeLimit")); |
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String queueRemoveAlgorithm = cp.getProperty(NAME, "Queue.RemoveAlgorithm"); |
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int algorithm = StringUtils.getStringPos(queueRemoveAlgorithm, Queue.algorithms); |
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if(algorithm != -1) { |
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_logger.write(toString(), Logger.DEBUG, "Starting 2 Queues with size limit of "+queueSizeLimit+", using remove algorithm "+queueRemoveAlgorithm); |
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// we have valid values, so lets start it. |
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_alerterQueue = new Queue(queueSizeLimit, algorithm); |
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_monitorQueue = new Queue(queueSizeLimit, algorithm); |
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} |
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else { |
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_logger.write(toString(), Logger.WARNING, "Bad Queue Algorithm configuration, not known: "+queueRemoveAlgorithm); |
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// just don't activate a limit |
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_alerterQueue = new Queue(); |
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_monitorQueue = new Queue(); |
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} |
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} catch (PropertyNotFoundException e) { |
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_logger.write(toString(), Logger.DEBUG, "Optional config not set: "+e); |
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// just don't activate a limit |
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_alerterQueue = new Queue(); |
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_monitorQueue = new Queue(); |
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} catch (NumberFormatException e) { |
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_logger.write(toString(), Logger.WARNING, "Bad Queue SizeLimit configuration: "+e); |
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// just don't activate a limit |
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_alerterQueue = new Queue(); |
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_monitorQueue = new Queue(); |
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} |
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_logger.write(toString(), Logger.SYSINIT, "configured"); |
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// setup a Queue for the servant -> monitor manager |
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Queue queue = new Queue(); |
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// startup a monitor on this queue |
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String queueName = NAME + " ServantToMonMan"; |
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queue.startMonitor(queueMonitorInterval*1000, queueName); |
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// startup monitors on these queues |
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try { |
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// try to get the interval, if this fails, we won't start up the monitor |
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int queueMonitorInterval = Integer.parseInt(cp.getProperty(NAME, "Queue.MonitorInterval")); |
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_alerterQueue.startMonitor(queueMonitorInterval*1000, _monitorQueue, NAME + " DataQueue"); |
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_monitorQueue.startMonitor(queueMonitorInterval*1000, _monitorQueue, NAME + " HeartbeatQueue"); |
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} catch (PropertyNotFoundException e) { |
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_logger.write(toString(), Logger.WARNING, "failed to find queue monitor config, disabling. " + e); |
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} |
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// setup the servant and connect |
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_logger.write(toString(), Logger.SYSINIT, "starting servant and connecting"); |
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try { |
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ClientServant ref = new ClientServant(queue); |
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ClientServant ref = new ClientServant(_monitorQueue); |
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org.omg.CORBA.Object objRef = _refman.getRootPOA().servant_to_reference(ref); |
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Client client = ClientHelper.narrow(objRef); |
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CorbaClientListener listener = CorbaClientListenerHelper.narrow(objRef); |
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_logger.write(toString(), Logger.SYSINIT, "connecting"); |
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CorbaControlHandler handler = listener.connect(client); |
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CorbaControlHandler handler = listener.connect(client, NAME); |
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handler.startData(); |
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} |
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catch(Exception e) { |
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} |
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// setup the MonitorManager |
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MonitorManager monMan = new MonitorManager(queue); |
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MonitorManager monMan = MonitorManager.getInstance(); |
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monMan.start(); |
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// setup the AlerterManager |
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AlerterManager alertMan = AlerterManager.getInstance(); |
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alertMan.start(); |
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_logger.write(toString(), Logger.SYSINIT, "started"); |
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} |
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/** |
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* Does a dependency check. Used mainly at startup to |
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* see if the required dependencies (components) are up |
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* and running. |
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* |
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* @return a boolean value, true if the depdencies are satisfied |
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*/ |
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public boolean depCheck() { |
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try { |
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org.omg.CORBA.Object obj; |
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// first check the ConfigurationManager is alive |
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obj = _refman.getCORBARef("iscream.ConfigurationManager"); |
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// then get some info on the CLI |
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ConfigurationProxy cp = ConfigurationProxy.getInstance(); |
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String cli = cp.getProperty("RootFilter", "RootFilter.realtimeInterfaceName"); |
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// finally check the CLI is alive |
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obj = _refman.getCORBARef("iscream.ClientInterface." + cli); |
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} catch(ComponentCORBAException e) { |
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System.err.println(toString() + ": Dependency Failure: "+e); |
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return false; |
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} catch(PropertyNotFoundException e) { |
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System.err.println(toString() + ": Unable to obtain configuration: "+e); |
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return false; |
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} |
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// dependency check suceeded |
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return true; |
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} |
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/** |
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* Overrides the {@link java.lang.Object#toString() Object.toString()} |
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* method to provide clean logging (every class should have this). |
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* |
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* This uses the uk.ac.ukc.iscream.util.FormatName class |
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* This uses the uk.org.iscream.util.FormatName class |
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* to format the toString() |
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* |
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* @return the name of this class and its CVS revision |
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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; |
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private ReferenceManager _refman = ReferenceManager.getInstance(); |
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//---STATIC ATTRIBUTES--- |
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/** |
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* A queue for the alerter manager |
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*/ |
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public static Queue _alerterQueue; |
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/** |
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* A queue for the monitor manager |
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*/ |
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public static Queue _monitorQueue; |
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} |
