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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 1.3 by tdb, Mon Feb 5 02:58:54 2001 UTC vs.
Revision 1.19 by ajm, Fri Mar 23 02:30:44 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	>	* This class starts the CORBA client used for alerting
13	>	* purposes.  It reads data using the ClientServant from CORBA
14	>	* calls by the i-scream client interface.  This data is then
15	>	* used by the MonitorManager to pass to Monitors.  Monitors then
16	>	* analyse the data and raise alerts if needed, these are passed to
17	>	* the Alerters, which send out alerts.  They are looked after by
18	>	* the AlerterManager.
19	>	*
20	>	* @author  $Author$
21	>	* @version $Id$
22	>	*/
23	>	public class ClientMain implements Component {
24
25	<	ClientServant corbaServant = new ClientServant();
19	<	org.omg.CORBA.Object o = _refman.getRootPOA().servant_to_reference(corbaServant);
20	<	Client client = ClientHelper.narrow(o);
25	>	//---FINAL ATTRIBUTES---
26
27	<	o = _refman.getCORBARef("iscream.ClientInterface.CorbaListener");
28	<	CorbaClientListener lRef = CorbaClientListenerHelper.narrow(o);
27	>	/**
28	>	* The current CVS revision of this class
29	>	*/
30	>	public static final String REVISION = "$Revision$";
31	>
32	>	/**
33	>	* The friendly name for this component, used by
34	>	* all related classes.
35	>	*/
36	>	public static final String NAME = "LocalClient";
37	>
38	>	//---STATIC METHODS---
39
40	<	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 -- ");
40	>	//---CONSTRUCTORS---
41
42	+	//---PUBLIC METHODS---
43	+
44	+	/**
45	+	* This starts the Local Client component.
46	+	* This starts the ClientServant, the MonitorManager and
47	+	* the AlerterManager, aswell as initialising any queues
48	+	* and obtaining any initial configuration.
49	+	*
50	+	* @throws ComponentStartException if the component fails to start
51	+	*/
52	+	public void start() throws ComponentStartException {
53	+	// get references to key objects
54	+	_logger = _refman.getLogger();
55	+
56	+	_logger.write(toString(), Logger.SYSINIT, "coming up");
57	+
58	+	// get a reference to the configuration proxy
59	+	ConfigurationProxy cp = ConfigurationProxy.getInstance();
60	+
61	+	// see if these Queue's need a size limit
62	+	try {
63	+	int queueSizeLimit = Integer.parseInt(cp.getProperty(NAME, "Queue.SizeLimit"));
64	+	String queueRemoveAlgorithm = cp.getProperty(NAME, "Queue.RemoveAlgorithm");
65	+	int algorithm = StringUtils.getStringPos(queueRemoveAlgorithm, Queue.algorithms);
66	+	if(algorithm != -1) {
67	+	_logger.write(toString(), Logger.DEBUG, "Starting 2 Queues with size limit of "+queueSizeLimit+", using remove algorithm "+queueRemoveAlgorithm);
68	+	// we have valid values, so lets start it.
69	+	_alerterQueue = new Queue(queueSizeLimit, algorithm);
70	+	_monitorQueue = new Queue(queueSizeLimit, algorithm);
71	+	}
72	+	else {
73	+	_logger.write(toString(), Logger.WARNING, "Bad Queue Algorithm configuration, not known: "+queueRemoveAlgorithm);
74	+	// just don't activate a limit
75	+	_alerterQueue = new Queue();
76	+	_monitorQueue = new Queue();
77	+	}
78	+	} catch (PropertyNotFoundException e) {
79	+	_logger.write(toString(), Logger.DEBUG, "Optional config not set: "+e);
80	+	// just don't activate a limit
81	+	_alerterQueue = new Queue();
82	+	_monitorQueue = new Queue();
83	+	} catch (NumberFormatException e) {
84	+	_logger.write(toString(), Logger.WARNING, "Bad Queue SizeLimit configuration: "+e);
85	+	// just don't activate a limit
86	+	_alerterQueue = new Queue();
87	+	_monitorQueue = new Queue();
88		}
89	<	catch (Exception e) {
90	<	System.out.println("ERROR : " + e);
91	<	e.printStackTrace(System.out);
89	>
90	>	// startup monitors on these queues
91	>	try {
92	>	// try to get the interval, if this fails, we won't start up the monitor
93	>	int queueMonitorInterval = Integer.parseInt(cp.getProperty(NAME, "Queue.MonitorInterval"));
94	>	_alerterQueue.startMonitor(queueMonitorInterval*1000, _monitorQueue, NAME + " Alerter");
95	>	_monitorQueue.startMonitor(queueMonitorInterval*1000, _monitorQueue, NAME + " Monitor");
96	>	} catch (PropertyNotFoundException e) {
97	>	_logger.write(toString(), Logger.WARNING, "failed to find queue monitor config, disabling. " + e);
98	>	}
99	>
100	>	// setup the servant and connect
101	>	_logger.write(toString(), Logger.SYSINIT, "starting servant and connecting");
102	>	try {
103	>	ClientServant ref = new ClientServant(_monitorQueue);
104	>	org.omg.CORBA.Object objRef = _refman.getRootPOA().servant_to_reference(ref);
105	>	Client client = ClientHelper.narrow(objRef);
106	>
107	>	// this name maybe shouldn't be static
108	>	objRef = _refman.getCORBARef("iscream.ClientInterface.CorbaListener");
109	>	CorbaClientListener listener = CorbaClientListenerHelper.narrow(objRef);
110	>
111	>	_logger.write(toString(), Logger.SYSINIT, "connecting");
112	>	CorbaControlHandler handler = listener.connect(client, NAME);
113	>	handler.startData();
114		}
115	+	catch(Exception e) {
116	+	// not sure what to do here
117	+	// so we just log the error
118	+	_logger.write(toString(), Logger.ERROR, "ERROR - " + e.getMessage());
119	+	}
120	+
121	+	// setup the MonitorManager
122	+	MonitorManager monMan = MonitorManager.getInstance();
123	+	monMan.start();
124	+
125	+	// setup the AlerterManager
126	+	AlerterManager alertMan = AlerterManager.getInstance();
127	+	alertMan.start();
128	+
129	+	_logger.write(toString(), Logger.SYSINIT, "started");
130		}
131	+
132	+	/**
133	+	* Does a dependency check. Used mainly at startup to
134	+	* see if the required dependencies (components) are up
135	+	* and running.
136	+	*
137	+	* @return a boolean value, true if the depdencies are satisfied
138	+	*/
139	+	public boolean depCheck() {
140	+	try {
141	+	org.omg.CORBA.Object obj;
142	+	// first check the ConfigurationManager is alive
143	+	obj = _refman.getCORBARef("iscream.ConfigurationManager");
144	+	// then get some info on the CLI
145	+	ConfigurationProxy cp = ConfigurationProxy.getInstance();
146	+	String cli = cp.getProperty("RootFilter", "RootFilter.realtimeInterfaceName");
147	+	// finally check the CLI is alive
148	+	obj = _refman.getCORBARef("iscream.ClientInterface." + cli);
149	+	} catch(ComponentCORBAException e) {
150	+	System.err.println(toString() + ": Dependency Failure: "+e);
151	+	return false;
152	+	} catch(PropertyNotFoundException e) {
153	+	System.err.println(toString() + ": Unable to obtain configuration: "+e);
154	+	return false;
155	+	}
156	+	// dependency check suceeded
157	+	return true;
158	+	}
159	+
160	+	/**
161	+	* Overrides the {@link java.lang.Object#toString() Object.toString()}
162	+	* method to provide clean logging (every class should have this).
163	+	*
164	+	* This uses the uk.org.iscream.util.FormatName class
165	+	* to format the toString()
166	+	*
167	+	* @return the name of this class and its CVS revision
168	+	*/
169	+	public String toString() {
170	+	return FormatName.getName(
171	+	NAME,
172	+	getClass().getName(),
173	+	REVISION);
174	+	}
175	+
176	+	//---PRIVATE METHODS---
177	+
178	+	//---ACCESSOR/MUTATOR METHODS---
179	+
180	+	//---ATTRIBUTES---
181	+
182	+	/**
183	+	* This holds a reference to the
184	+	* system logger that is being used.
185	+	*/
186	+	private Logger _logger;
187	+
188	+	/**
189	+	* A reference to the reference manager in use
190	+	*/
191	+	private ReferenceManager _refman = ReferenceManager.getInstance();
192	+
193	+	//---STATIC ATTRIBUTES---
194	+
195	+	/**
196	+	* A queue for the alerter manager
197	+	*/
198	+	public static Queue _alerterQueue;
199	+
200	+	/**
201	+	* A queue for the monitor manager
202	+	*/
203	+	public static Queue _monitorQueue;
204
205		}

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