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 (24 years, 7 months ago) by tdb
Branch:	MAIN
Changes since 1.17:	+4 -4 lines
Log Message:	Forgot to change the Queue names.
#	Content
1	//---PACKAGE DECLARATION---
2	package uk.org.iscream.client;
3
4	//---IMPORTS---
5	import uk.org.iscream.clientinterface.*;
6	import uk.org.iscream.componentmanager.*;
7	import uk.org.iscream.core.*;
8	import uk.org.iscream.util.*;
9
10	/**
11	* A startup component for the Local Clients.
12	*
13	* @author $Author: tdb1 $
14	* @version $Id: ClientMain.java,v 1.17 2001/03/22 17:31:43 tdb1 Exp $
15	*/
16	public class ClientMain implements Component {
17
18	//---FINAL ATTRIBUTES---
19
20	/**
21	* The current CVS revision of this class
22	*/
23	public static final String REVISION = "$Revision: 1.17 $";
24
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	// get references to key objects
42	_logger = _refman.getLogger();
43
44	_logger.write(toString(), Logger.SYSINIT, "coming up");
45
46	// 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	_alerterQueue.startMonitor(queueMonitorInterval*1000, _monitorQueue, NAME + " Alerter");
83	_monitorQueue.startMonitor(queueMonitorInterval*1000, _monitorQueue, NAME + " Monitor");
84	} catch (PropertyNotFoundException e) {
85	_logger.write(toString(), Logger.WARNING, "failed to find queue monitor config, disabling. " + e);
86	}
87
88	// setup the servant and connect
89	_logger.write(toString(), Logger.SYSINIT, "starting servant and connecting");
90	try {
91	ClientServant ref = new ClientServant(_monitorQueue);
92	org.omg.CORBA.Object objRef = _refman.getRootPOA().servant_to_reference(ref);
93	Client client = ClientHelper.narrow(objRef);
94
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	CorbaControlHandler handler = listener.connect(client, NAME);
101	handler.startData();
102	}
103	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	}
108
109	// setup the MonitorManager
110	MonitorManager monMan = MonitorManager.getInstance();
111	monMan.start();
112
113	// setup the AlerterManager
114	AlerterManager alertMan = AlerterManager.getInstance();
115	alertMan.start();
116
117	_logger.write(toString(), Logger.SYSINIT, "started");
118
119	}
120
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	System.err.println(toString() + ": Dependency Failure: "+e);
140	return false;
141	} catch(PropertyNotFoundException e) {
142	System.err.println(toString() + ": Unable to obtain configuration: "+e);
143	return false;
144	}
145	// dependency check suceeded
146	return true;
147	}
148
149	/**
150	* Overrides the {@link java.lang.Object#toString() Object.toString()}
151	* method to provide clean logging (every class should have this).
152	*
153	* This uses the uk.org.iscream.util.FormatName class
154	* 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	}
164
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	private Logger _logger;
176
177	/**
178	* A reference to the reference manager in use
179	*/
180	private ReferenceManager _refman = ReferenceManager.getInstance();
181
182	//---STATIC ATTRIBUTES---
183
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
194	}