server/client/ClientMain.java

//---PACKAGE DECLARATION---
package uk.org.iscream.client;

//---IMPORTS---
import uk.org.iscream.clientinterface.*;
import uk.org.iscream.componentmanager.*;
import uk.org.iscream.core.*;
import uk.org.iscream.util.*;

/**
 * A startup component for the Local Clients.
 *
 * @author  $Author: tdb1 $
 * @version $Id: ClientMain.java,v 1.17 2001/03/22 17:31:43 tdb1 Exp $
 */
public class ClientMain implements Component {

//---FINAL ATTRIBUTES---

    /**
     * The current CVS revision of this class
     */
    public static final String REVISION = "$Revision: 1.17 $";
    
    /**
     * The friendly name for this component, used by
     * all related classes.
     */
    public static final String NAME = "LocalClient";
    
//---STATIC METHODS---

//---CONSTRUCTORS---

//---PUBLIC METHODS---

    /**
     * This starts the Local Client component
     */
    public void start() throws ComponentStartException {
        // get references to key objects
        _logger = _refman.getLogger();

        _logger.write(toString(), Logger.SYSINIT, "coming up");
        
        // get a reference to the configuration proxy
        ConfigurationProxy cp = ConfigurationProxy.getInstance();
        
        // see if these Queue's need a size limit
        try {
            int queueSizeLimit = Integer.parseInt(cp.getProperty(NAME, "Queue.SizeLimit"));
            String queueRemoveAlgorithm = cp.getProperty(NAME, "Queue.RemoveAlgorithm");
            int algorithm = StringUtils.getStringPos(queueRemoveAlgorithm, Queue.algorithms);
            if(algorithm != -1) {
                _logger.write(toString(), Logger.DEBUG, "Starting 2 Queues with size limit of "+queueSizeLimit+", using remove algorithm "+queueRemoveAlgorithm);
                // we have valid values, so lets start it.
                _alerterQueue = new Queue(queueSizeLimit, algorithm);
                _monitorQueue = new Queue(queueSizeLimit, algorithm);
            }
            else {
                _logger.write(toString(), Logger.WARNING, "Bad Queue Algorithm configuration, not known: "+queueRemoveAlgorithm);
                // just don't activate a limit
                _alerterQueue = new Queue();
                _monitorQueue = new Queue();
            }
        } catch (PropertyNotFoundException e) {
            _logger.write(toString(), Logger.DEBUG, "Optional config not set: "+e);
            // just don't activate a limit
            _alerterQueue = new Queue();
            _monitorQueue = new Queue();
        } catch (NumberFormatException e) {
            _logger.write(toString(), Logger.WARNING, "Bad Queue SizeLimit configuration: "+e);
            // just don't activate a limit
            _alerterQueue = new Queue();
            _monitorQueue = new Queue();
        }
        
        // startup monitors on these queues
        try {
            // try to get the interval, if this fails, we won't start up the monitor
            int queueMonitorInterval = Integer.parseInt(cp.getProperty(NAME, "Queue.MonitorInterval"));
            _alerterQueue.startMonitor(queueMonitorInterval*1000, _monitorQueue, NAME + " Alerter");
            _monitorQueue.startMonitor(queueMonitorInterval*1000, _monitorQueue, NAME + " Monitor");
        } catch (PropertyNotFoundException e) {
            _logger.write(toString(), Logger.WARNING, "failed to find queue monitor config, disabling. " + e);
        }        
        
        // setup the servant and connect
        _logger.write(toString(), Logger.SYSINIT, "starting servant and connecting");           
        try {
            ClientServant ref = new ClientServant(_monitorQueue);
            org.omg.CORBA.Object objRef = _refman.getRootPOA().servant_to_reference(ref);
            Client client = ClientHelper.narrow(objRef);
            
            // this name maybe shouldn't be static
            objRef = _refman.getCORBARef("iscream.ClientInterface.CorbaListener");
            CorbaClientListener listener = CorbaClientListenerHelper.narrow(objRef);
            
            _logger.write(toString(), Logger.SYSINIT, "connecting");
            CorbaControlHandler handler = listener.connect(client, NAME);
            handler.startData();
        }
        catch(Exception e) {
            // not sure what to do here
            // so we just log the error
            _logger.write(toString(), Logger.ERROR, "ERROR - " + e.getMessage());
        }
        
        // setup the MonitorManager
        MonitorManager monMan = MonitorManager.getInstance();
        monMan.start();
        
        // setup the AlerterManager
        AlerterManager alertMan = AlerterManager.getInstance();
        alertMan.start();
       
        _logger.write(toString(), Logger.SYSINIT, "started");
        
    }
    
    /**
     * Does a dependency check. Used mainly at startup to
     * see if the required dependencies (components) are up
     * and running.
     *
     * @return a boolean value, true if the depdencies are satisfied
     */
    public boolean depCheck() {
        try {
            org.omg.CORBA.Object obj;
            // first check the ConfigurationManager is alive
            obj = _refman.getCORBARef("iscream.ConfigurationManager");
            // then get some info on the CLI
            ConfigurationProxy cp = ConfigurationProxy.getInstance();
            String cli = cp.getProperty("RootFilter", "RootFilter.realtimeInterfaceName");
            // finally check the CLI is alive
            obj = _refman.getCORBARef("iscream.ClientInterface." + cli);
        } catch(ComponentCORBAException e) {
            System.err.println(toString() + ": Dependency Failure: "+e);
            return false;
        } catch(PropertyNotFoundException e) {
            System.err.println(toString() + ": Unable to obtain configuration: "+e);
            return false;
        }
        // dependency check suceeded
        return true;
    }
    
    /**
     * Overrides the {@link java.lang.Object#toString() Object.toString()}
     * method to provide clean logging (every class should have this).
     *
     * This uses the uk.org.iscream.util.FormatName class
     * to format the toString()
     *
     * @return the name of this class and its CVS revision
     */
    public String toString() {
        return FormatName.getName(
            NAME,
            getClass().getName(),
            REVISION);
    }

//---PRIVATE METHODS---

//---ACCESSOR/MUTATOR METHODS---

//---ATTRIBUTES---

    /**
     * This holds a reference to the
     * system logger that is being used.
     */
    private Logger _logger;

    /**
     * A reference to the reference manager in use
     */
    private ReferenceManager _refman = ReferenceManager.getInstance();

//---STATIC ATTRIBUTES---

    /**
     * A queue for the alerter manager
     */
    public static Queue _alerterQueue;
    
    /**
     * A queue for the monitor manager
     */
    public static Queue _monitorQueue;

}
Revision:	1.18
Committed:	Thu Mar 22 18:18:14 2001 UTC (23 years, 1 month ago) by tdb
Branch:	MAIN
Changes since 1.17:	+4 -4 lines
Log Message:	Forgot to change the Queue names.
#	User	Rev	Content
1	tdb	1.5	//---PACKAGE DECLARATION---
2	tdb	1.15	package uk.org.iscream.client;
3	tdb	1.1
4	tdb	1.5	//---IMPORTS---
5	tdb	1.15	import uk.org.iscream.clientinterface.*;
6			import uk.org.iscream.componentmanager.*;
7			import uk.org.iscream.core.*;
8			import uk.org.iscream.util.*;
9	tdb	1.5
10			/**
11			* A startup component for the Local Clients.
12			*
13	tdb	1.13	* @author $Author: tdb1 $
14	tdb	1.18	* @version $Id: ClientMain.java,v 1.17 2001/03/22 17:31:43 tdb1 Exp $
15	tdb	1.5	*/
16			public class ClientMain implements Component {
17
18			//---FINAL ATTRIBUTES---
19
20			/**
21			* The current CVS revision of this class
22			*/
23	tdb	1.18	public static final String REVISION = "$Revision: 1.17 $";
24	tdb	1.5
25			/**
26			* The friendly name for this component, used by
27			* all related classes.
28			*/
29			public static final String NAME = "LocalClient";
30
31			//---STATIC METHODS---
32
33			//---CONSTRUCTORS---
34
35			//---PUBLIC METHODS---
36
37			/**
38			* This starts the Local Client component
39			*/
40			public void start() throws ComponentStartException {
41	tdb	1.6	// get references to key objects
42	tdb	1.13	_logger = _refman.getLogger();
43	tdb	1.5
44			_logger.write(toString(), Logger.SYSINIT, "coming up");
45
46	tdb	1.17	// get a reference to the configuration proxy
47			ConfigurationProxy cp = ConfigurationProxy.getInstance();
48
49			// see if these Queue's need a size limit
50			try {
51			int queueSizeLimit = Integer.parseInt(cp.getProperty(NAME, "Queue.SizeLimit"));
52			String queueRemoveAlgorithm = cp.getProperty(NAME, "Queue.RemoveAlgorithm");
53			int algorithm = StringUtils.getStringPos(queueRemoveAlgorithm, Queue.algorithms);
54			if(algorithm != -1) {
55			_logger.write(toString(), Logger.DEBUG, "Starting 2 Queues with size limit of "+queueSizeLimit+", using remove algorithm "+queueRemoveAlgorithm);
56			// we have valid values, so lets start it.
57			_alerterQueue = new Queue(queueSizeLimit, algorithm);
58			_monitorQueue = new Queue(queueSizeLimit, algorithm);
59			}
60			else {
61			_logger.write(toString(), Logger.WARNING, "Bad Queue Algorithm configuration, not known: "+queueRemoveAlgorithm);
62			// just don't activate a limit
63			_alerterQueue = new Queue();
64			_monitorQueue = new Queue();
65			}
66			} catch (PropertyNotFoundException e) {
67			_logger.write(toString(), Logger.DEBUG, "Optional config not set: "+e);
68			// just don't activate a limit
69			_alerterQueue = new Queue();
70			_monitorQueue = new Queue();
71			} catch (NumberFormatException e) {
72			_logger.write(toString(), Logger.WARNING, "Bad Queue SizeLimit configuration: "+e);
73			// just don't activate a limit
74			_alerterQueue = new Queue();
75			_monitorQueue = new Queue();
76			}
77
78			// startup monitors on these queues
79			try {
80			// try to get the interval, if this fails, we won't start up the monitor
81			int queueMonitorInterval = Integer.parseInt(cp.getProperty(NAME, "Queue.MonitorInterval"));
82	tdb	1.18	_alerterQueue.startMonitor(queueMonitorInterval*1000, _monitorQueue, NAME + " Alerter");
83			_monitorQueue.startMonitor(queueMonitorInterval*1000, _monitorQueue, NAME + " Monitor");
84	tdb	1.17	} catch (PropertyNotFoundException e) {
85			_logger.write(toString(), Logger.WARNING, "failed to find queue monitor config, disabling. " + e);
86			}
87	tdb	1.5
88	tdb	1.7	// setup the servant and connect
89			_logger.write(toString(), Logger.SYSINIT, "starting servant and connecting");
90	tdb	1.1	try {
91	ajm	1.9	ClientServant ref = new ClientServant(_monitorQueue);
92	tdb	1.5	org.omg.CORBA.Object objRef = _refman.getRootPOA().servant_to_reference(ref);
93	tdb	1.7	Client client = ClientHelper.narrow(objRef);
94	tdb	1.5
95			// this name maybe shouldn't be static
96			objRef = _refman.getCORBARef("iscream.ClientInterface.CorbaListener");
97			CorbaClientListener listener = CorbaClientListenerHelper.narrow(objRef);
98
99			_logger.write(toString(), Logger.SYSINIT, "connecting");
100	tdb	1.8	CorbaControlHandler handler = listener.connect(client, NAME);
101	tdb	1.5	handler.startData();
102	tdb	1.1	}
103	tdb	1.5	catch(Exception e) {
104			// not sure what to do here
105			// so we just log the error
106			_logger.write(toString(), Logger.ERROR, "ERROR - " + e.getMessage());
107	tdb	1.1	}
108	tdb	1.7
109			// setup the MonitorManager
110	ajm	1.9	MonitorManager monMan = MonitorManager.getInstance();
111			monMan.start();
112
113			// setup the AlerterManager
114			AlerterManager alertMan = AlerterManager.getInstance();
115			alertMan.start();
116
117	tdb	1.5	_logger.write(toString(), Logger.SYSINIT, "started");
118
119			}
120	tdb	1.12
121			/**
122			* Does a dependency check. Used mainly at startup to
123			* see if the required dependencies (components) are up
124			* and running.
125			*
126			* @return a boolean value, true if the depdencies are satisfied
127			*/
128			public boolean depCheck() {
129			try {
130			org.omg.CORBA.Object obj;
131			// first check the ConfigurationManager is alive
132			obj = _refman.getCORBARef("iscream.ConfigurationManager");
133			// then get some info on the CLI
134			ConfigurationProxy cp = ConfigurationProxy.getInstance();
135			String cli = cp.getProperty("RootFilter", "RootFilter.realtimeInterfaceName");
136			// finally check the CLI is alive
137			obj = _refman.getCORBARef("iscream.ClientInterface." + cli);
138			} catch(ComponentCORBAException e) {
139	tdb	1.14	System.err.println(toString() + ": Dependency Failure: "+e);
140	tdb	1.12	return false;
141			} catch(PropertyNotFoundException e) {
142	tdb	1.14	System.err.println(toString() + ": Unable to obtain configuration: "+e);
143	tdb	1.12	return false;
144			}
145			// dependency check suceeded
146			return true;
147			}
148
149	tdb	1.5	/**
150			* Overrides the {@link java.lang.Object#toString() Object.toString()}
151			* method to provide clean logging (every class should have this).
152			*
153	tdb	1.15	* This uses the uk.org.iscream.util.FormatName class
154	tdb	1.5	* to format the toString()
155			*
156			* @return the name of this class and its CVS revision
157			*/
158			public String toString() {
159			return FormatName.getName(
160			NAME,
161			getClass().getName(),
162			REVISION);
163	tdb	1.1	}
164	tdb	1.5
165			//---PRIVATE METHODS---
166
167			//---ACCESSOR/MUTATOR METHODS---
168
169			//---ATTRIBUTES---
170
171			/**
172			* This holds a reference to the
173			* system logger that is being used.
174			*/
175	tdb	1.6	private Logger _logger;
176	tdb	1.5
177			/**
178			* A reference to the reference manager in use
179			*/
180	tdb	1.13	private ReferenceManager _refman = ReferenceManager.getInstance();
181	tdb	1.5
182			//---STATIC ATTRIBUTES---
183	ajm	1.9
184			/**
185			* A queue for the alerter manager
186			*/
187			public static Queue _alerterQueue;
188
189			/**
190			* A queue for the monitor manager
191			*/
192			public static Queue _monitorQueue;
193	tdb	1.1
194			}