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root/i-scream/projects/cms/source/server/uk/org/iscream/cms/server/client/ClientMain.java

Comparing projects/cms/source/server/uk/org/iscream/cms/server/client/ClientMain.java (file contents):
Revision 1.4 by tdb, Mon Feb 5 20:45:32 2001 UTC vs.
Revision 1.17 by tdb, Thu Mar 22 17:31:43 2001 UTC

#	Line 1 | Line 1
1	<	package uk.ac.ukc.iscream.client;
1	>	//---PACKAGE DECLARATION---
2	>	package uk.org.iscream.client;
3
4	<	import uk.ac.ukc.iscream.client.*;
5	<	import uk.ac.ukc.iscream.clientinterface.*;
6	<	import uk.ac.ukc.iscream.componentmanager.*;
7	<	import org.omg.CosNaming.*;
8	<	import org.omg.CORBA.*;
8	<	import org.omg.PortableServer.*;
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	<	public class ClientMain {
11	<	public static void main(String args[]) {
12	<	System.setProperty("org.omg.CORBA.ORBClass","jacorb.orb.ORB");
13	<	System.setProperty("org.omg.CORBA.ORBSingletonClass","jacorb.orb.ORBSingleton");
14	<	try {
15	<	ReferenceManager _refman = ReferenceManager.getInstance();
16	<	_refman.activatePOA();
10	>	/**
11	>	* A startup component for the Local Clients.
12	>	*
13	>	* @author  $Author$
14	>	* @version $Id$
15	>	*/
16	>	public class ClientMain implements Component {
17
18	<	ClientServant corbaServant = new ClientServant();
19	<	org.omg.CORBA.Object o = _refman.getRootPOA().servant_to_reference(corbaServant);
20	<	Client client = ClientHelper.narrow(o);
18	>	//---FINAL ATTRIBUTES---
19
20	<	o = _refman.getCORBARef("iscream.ClientInterface.CorbaListener");
21	<	CorbaClientListener lRef = CorbaClientListenerHelper.narrow(o);
20	>	/**
21	>	* The current CVS revision of this class
22	>	*/
23	>	public static final String REVISION = "$Revision$";
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	<	boolean result;
26	<	System.out.println(" -- connecting -- ");
27	<	CorbaControlHandler handler = lRef.connect(client);
28	<	System.out.println(" -- starting data -- ");
29	<	result = handler.startData();
30	<	//System.out.println(" -- sleep for 30s -- ");
31	<	//Thread.sleep(30000);
32	<	//System.out.println(" -- stopping data -- ");
33	<	//result = handler.stopData();
34	<	//Thread.sleep(2000);
35	<	//System.out.println(" -- completed -- ");
36	<	_refman.getORB().run();
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	<	catch (Exception e) {
78	<	System.out.println("ERROR : " + e);
79	<	e.printStackTrace(System.out);
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 + " DataQueue");
83	>	_monitorQueue.startMonitor(queueMonitorInterval*1000, _monitorQueue, NAME + " HeartbeatQueue");
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		}

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