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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 1.22 by tdb, Tue May 21 16:47:16 2002 UTC

#	Line 1 | Line 1
1	<	package uk.ac.ukc.iscream.client;
1	>	/*
2	>	* i-scream central monitoring system
3	>	* http://www.i-scream.org.uk
4	>	* Copyright (C) 2000-2002 i-scream
5	>	*
6	>	* This program is free software; you can redistribute it and/or
7	>	* modify it under the terms of the GNU General Public License
8	>	* as published by the Free Software Foundation; either version 2
9	>	* of the License, or (at your option) any later version.
10	>	*
11	>	* This program is distributed in the hope that it will be useful,
12	>	* but WITHOUT ANY WARRANTY; without even the implied warranty of
13	>	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
14	>	* GNU General Public License for more details.
15	>	*
16	>	* You should have received a copy of the GNU General Public License
17	>	* along with this program; if not, write to the Free Software
18	>	* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
19	>	*/
20
21	<	import uk.ac.ukc.iscream.client.*;
22	<	import uk.ac.ukc.iscream.clientinterface.*;
5	<	import uk.ac.ukc.iscream.componentmanager.*;
6	<	import org.omg.CosNaming.*;
7	<	import org.omg.CORBA.*;
8	<	import org.omg.PortableServer.*;
21	>	//---PACKAGE DECLARATION---
22	>	package uk.org.iscream.cms.server.client;
23
24	<	public class ClientMain {
25	<	public static void main(String args[]) {
26	<	System.setProperty("org.omg.CORBA.ORBClass","jacorb.orb.ORB");
27	<	System.setProperty("org.omg.CORBA.ORBSingletonClass","jacorb.orb.ORBSingleton");
28	<	try {
15	<	ReferenceManager _refman = ReferenceManager.getInstance();
16	<	_refman.activatePOA();
24	>	//---IMPORTS---
25	>	import uk.org.iscream.cms.server.clientinterface.*;
26	>	import uk.org.iscream.cms.server.componentmanager.*;
27	>	import uk.org.iscream.cms.server.core.*;
28	>	import uk.org.iscream.cms.server.util.*;
29
30	<	ClientServant corbaServant = new ClientServant();
31	<	org.omg.CORBA.Object o = _refman.getRootPOA().servant_to_reference(corbaServant);
32	<	Client client = ClientHelper.narrow(o);
30	>	/**
31	>	* A startup component for the Local Clients.
32	>	* This class starts the CORBA client used for alerting
33	>	* purposes.  It reads data using the ClientServant from CORBA
34	>	* calls by the i-scream client interface.  This data is then
35	>	* used by the MonitorManager to pass to Monitors.  Monitors then
36	>	* analyse the data and raise alerts if needed, these are passed to
37	>	* the Alerters, which send out alerts.  They are looked after by
38	>	* the AlerterManager.
39	>	*
40	>	* @author  $Author$
41	>	* @version $Id$
42	>	*/
43	>	public class ClientMain implements Component {
44
45	<	o = _refman.getCORBARef("iscream.ClientInterface.CorbaListener");
23	<	CorbaClientListener lRef = CorbaClientListenerHelper.narrow(o);
45	>	//---FINAL ATTRIBUTES---
46
47	<	boolean result;
48	<	System.out.println(" -- connecting -- ");
49	<	CorbaControlHandler handler = lRef.connect(client);
50	<	System.out.println(" -- starting data -- ");
51	<	result = handler.startData();
52	<	System.out.println(" -- sleep for 30s -- ");
53	<	Thread.sleep(30000);
54	<	System.out.println(" -- stopping data -- ");
55	<	result = handler.stopData();
56	<	Thread.sleep(2000);
57	<	System.out.println(" -- completed -- ");
47	>	/**
48	>	* The current CVS revision of this class
49	>	*/
50	>	public static final String REVISION = "$Revision$";
51	>
52	>	/**
53	>	* The friendly name for this component, used by
54	>	* all related classes.
55	>	*/
56	>	public static final String NAME = "LocalClient";
57	>
58	>	//---STATIC METHODS---
59
60	+	//---CONSTRUCTORS---
61	+
62	+	//---PUBLIC METHODS---
63	+
64	+	/**
65	+	* This starts the Local Client component.
66	+	* This starts the ClientServant, the MonitorManager and
67	+	* the AlerterManager, aswell as initialising any queues
68	+	* and obtaining any initial configuration.
69	+	*
70	+	* @throws ComponentStartException if the component fails to start
71	+	*/
72	+	public void start() throws ComponentStartException {
73	+	// get references to key objects
74	+	_logger = _refman.getLogger();
75	+
76	+	_logger.write(toString(), Logger.SYSINIT, "coming up");
77	+
78	+	// get a reference to the configuration proxy
79	+	ConfigurationProxy cp = ConfigurationProxy.getInstance();
80	+
81	+	// see if these Queue's need a size limit
82	+	try {
83	+	int queueSizeLimit = Integer.parseInt(cp.getProperty(NAME, "Queue.SizeLimit"));
84	+	String queueRemoveAlgorithm = cp.getProperty(NAME, "Queue.RemoveAlgorithm");
85	+	int algorithm = StringUtils.getStringPos(queueRemoveAlgorithm, Queue.algorithms);
86	+	if(algorithm != -1) {
87	+	_logger.write(toString(), Logger.DEBUG, "Starting 2 Queues with size limit of "+queueSizeLimit+", using remove algorithm "+queueRemoveAlgorithm);
88	+	// we have valid values, so lets start it.
89	+	_alerterQueue = new Queue(queueSizeLimit, algorithm);
90	+	_monitorQueue = new Queue(queueSizeLimit, algorithm);
91	+	}
92	+	else {
93	+	_logger.write(toString(), Logger.WARNING, "Bad Queue Algorithm configuration, not known: "+queueRemoveAlgorithm);
94	+	// just don't activate a limit
95	+	_alerterQueue = new Queue();
96	+	_monitorQueue = new Queue();
97	+	}
98	+	} catch (PropertyNotFoundException e) {
99	+	_logger.write(toString(), Logger.DEBUG, "Optional config not set: "+e);
100	+	// just don't activate a limit
101	+	_alerterQueue = new Queue();
102	+	_monitorQueue = new Queue();
103	+	} catch (NumberFormatException e) {
104	+	_logger.write(toString(), Logger.WARNING, "Bad Queue SizeLimit configuration: "+e);
105	+	// just don't activate a limit
106	+	_alerterQueue = new Queue();
107	+	_monitorQueue = new Queue();
108		}
109	<	catch (Exception e) {
110	<	System.out.println("ERROR : " + e);
111	<	e.printStackTrace(System.out);
109	>
110	>	// startup monitors on these queues
111	>	try {
112	>	// try to get the interval, if this fails, we won't start up the monitor
113	>	int queueMonitorInterval = Integer.parseInt(cp.getProperty(NAME, "Queue.MonitorInterval"));
114	>	_alerterQueue.startMonitor(queueMonitorInterval*1000, _monitorQueue, NAME + " Alerter");
115	>	_monitorQueue.startMonitor(queueMonitorInterval*1000, _monitorQueue, NAME + " Monitor");
116	>	} catch (PropertyNotFoundException e) {
117	>	_logger.write(toString(), Logger.WARNING, "failed to find queue monitor config, disabling. " + e);
118	>	}
119	>
120	>	// setup the servant and connect
121	>	_logger.write(toString(), Logger.SYSINIT, "starting servant and connecting");
122	>	try {
123	>	ClientServant ref = new ClientServant(_monitorQueue);
124	>	org.omg.CORBA.Object objRef = _refman.getRootPOA().servant_to_reference(ref);
125	>	Client client = ClientHelper.narrow(objRef);
126	>
127	>	// this name maybe shouldn't be static
128	>	objRef = _refman.getCORBARef("iscream.ClientInterface.CorbaListener");
129	>	CorbaClientListener listener = CorbaClientListenerHelper.narrow(objRef);
130	>
131	>	_logger.write(toString(), Logger.SYSINIT, "connecting");
132	>	CorbaControlHandler handler = listener.connect(client, NAME);
133	>	handler.startData();
134		}
135	+	catch(Exception e) {
136	+	// not sure what to do here
137	+	// so we just log the error
138	+	_logger.write(toString(), Logger.ERROR, "ERROR - " + e.getMessage());
139	+	}
140	+
141	+	// setup the MonitorManager
142	+	MonitorManager monMan = MonitorManager.getInstance();
143	+	monMan.start();
144	+
145	+	// setup the AlerterManager
146	+	AlerterManager alertMan = AlerterManager.getInstance();
147	+	alertMan.start();
148	+
149	+	_logger.write(toString(), Logger.SYSINIT, "started");
150		}
151	+
152	+	/**
153	+	* Does a dependency check. Used mainly at startup to
154	+	* see if the required dependencies (components) are up
155	+	* and running.
156	+	*
157	+	* @return a boolean value, true if the depdencies are satisfied
158	+	*/
159	+	public boolean depCheck() {
160	+	try {
161	+	org.omg.CORBA.Object obj;
162	+	// first check the ConfigurationManager is alive
163	+	obj = _refman.getCORBARef("iscream.ConfigurationManager");
164	+	// then get some info on the CLI
165	+	ConfigurationProxy cp = ConfigurationProxy.getInstance();
166	+	String cli = cp.getProperty("RootFilter", "RootFilter.realtimeInterfaceName");
167	+	// finally check the CLI is alive
168	+	obj = _refman.getCORBARef("iscream.ClientInterface." + cli);
169	+	} catch(ComponentCORBAException e) {
170	+	System.err.println(toString() + ": Dependency Failure: "+e);
171	+	return false;
172	+	} catch(PropertyNotFoundException e) {
173	+	System.err.println(toString() + ": Unable to obtain configuration: "+e);
174	+	return false;
175	+	}
176	+	// dependency check suceeded
177	+	return true;
178	+	}
179	+
180	+	/**
181	+	* Overrides the {@link java.lang.Object#toString() Object.toString()}
182	+	* method to provide clean logging (every class should have this).
183	+	*
184	+	* This uses the uk.org.iscream.cms.server.util.FormatName class
185	+	* to format the toString()
186	+	*
187	+	* @return the name of this class and its CVS revision
188	+	*/
189	+	public String toString() {
190	+	return FormatName.getName(
191	+	NAME,
192	+	getClass().getName(),
193	+	REVISION);
194	+	}
195	+
196	+	//---PRIVATE METHODS---
197	+
198	+	//---ACCESSOR/MUTATOR METHODS---
199	+
200	+	//---ATTRIBUTES---
201	+
202	+	/**
203	+	* This holds a reference to the
204	+	* system logger that is being used.
205	+	*/
206	+	private Logger _logger;
207	+
208	+	/**
209	+	* A reference to the reference manager in use
210	+	*/
211	+	private ReferenceManager _refman = ReferenceManager.getInstance();
212	+
213	+	//---STATIC ATTRIBUTES---
214	+
215	+	/**
216	+	* A queue for the alerter manager
217	+	*/
218	+	public static Queue _alerterQueue;
219	+
220	+	/**
221	+	* A queue for the monitor manager
222	+	*/
223	+	public static Queue _monitorQueue;
224
225		}

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