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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 1.1 by tdb, Sat Feb 3 04:51:50 2001 UTC vs.
Revision 1.21 by tdb, Sat May 18 18:16:00 2002 UTC

#	Line 1 | Line 1
1	<	package uk.ac.ukc.iscream.client;
1	>	/*
2	>	* i-scream central monitoring system
3	>	* Copyright (C) 2000-2002 i-scream
4	>	*
5	>	* This program is free software; you can redistribute it and/or
6	>	* modify it under the terms of the GNU General Public License
7	>	* as published by the Free Software Foundation; either version 2
8	>	* of the License, or (at your option) any later version.
9	>	*
10	>	* This program is distributed in the hope that it will be useful,
11	>	* but WITHOUT ANY WARRANTY; without even the implied warranty of
12	>	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
13	>	* GNU General Public License for more details.
14	>	*
15	>	* You should have received a copy of the GNU General Public License
16	>	* along with this program; if not, write to the Free Software
17	>	* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
18	>	*/
19
20	<	import uk.ac.ukc.iscream.client.*;
21	<	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.*;
20	>	//---PACKAGE DECLARATION---
21	>	package uk.org.iscream.cms.server.client;
22
23	<	public class ClientMain {
24	<	public static void main(String args[]) {
25	<	System.setProperty("org.omg.CORBA.ORBClass","jacorb.orb.ORB");
26	<	System.setProperty("org.omg.CORBA.ORBSingletonClass","jacorb.orb.ORBSingleton");
27	<	try {
15	<	ReferenceManager _refman = ReferenceManager.getInstance();
16	<	_refman.activatePOA();
23	>	//---IMPORTS---
24	>	import uk.org.iscream.cms.server.clientinterface.*;
25	>	import uk.org.iscream.cms.server.componentmanager.*;
26	>	import uk.org.iscream.cms.server.core.*;
27	>	import uk.org.iscream.cms.server.util.*;
28
29	<	ClientServant corbaServant = new ClientServant();
30	<	org.omg.CORBA.Object o = _refman.getRootPOA().servant_to_reference(corbaServant);
31	<	Client client = ClientHelper.narrow(o);
29	>	/**
30	>	* A startup component for the Local Clients.
31	>	* This class starts the CORBA client used for alerting
32	>	* purposes.  It reads data using the ClientServant from CORBA
33	>	* calls by the i-scream client interface.  This data is then
34	>	* used by the MonitorManager to pass to Monitors.  Monitors then
35	>	* analyse the data and raise alerts if needed, these are passed to
36	>	* the Alerters, which send out alerts.  They are looked after by
37	>	* the AlerterManager.
38	>	*
39	>	* @author  $Author$
40	>	* @version $Id$
41	>	*/
42	>	public class ClientMain implements Component {
43
44	<	o = _refman.getCORBARef("iscream.ClientInterface.CorbaListener");
23	<	CorbaClientListener lRef = CorbaClientListenerHelper.narrow(o);
44	>	//---FINAL ATTRIBUTES---
45
46	<	boolean result;
47	<	CorbaHandler handler = lRef.connect("CorbaTest", client);
48	<	result = handler.startData();
49	<	System.out.println(result);
50	<	Thread.sleep(15000);
51	<	result = handler.stopData();
52	<	System.out.println(result);
46	>	/**
47	>	* The current CVS revision of this class
48	>	*/
49	>	public static final String REVISION = "$Revision$";
50	>
51	>	/**
52	>	* The friendly name for this component, used by
53	>	* all related classes.
54	>	*/
55	>	public static final String NAME = "LocalClient";
56	>
57	>	//---STATIC METHODS---
58
59	<	_refman.getORB().run();
59	>	//---CONSTRUCTORS---
60
61	+	//---PUBLIC METHODS---
62	+
63	+	/**
64	+	* This starts the Local Client component.
65	+	* This starts the ClientServant, the MonitorManager and
66	+	* the AlerterManager, aswell as initialising any queues
67	+	* and obtaining any initial configuration.
68	+	*
69	+	* @throws ComponentStartException if the component fails to start
70	+	*/
71	+	public void start() throws ComponentStartException {
72	+	// get references to key objects
73	+	_logger = _refman.getLogger();
74	+
75	+	_logger.write(toString(), Logger.SYSINIT, "coming up");
76	+
77	+	// get a reference to the configuration proxy
78	+	ConfigurationProxy cp = ConfigurationProxy.getInstance();
79	+
80	+	// see if these Queue's need a size limit
81	+	try {
82	+	int queueSizeLimit = Integer.parseInt(cp.getProperty(NAME, "Queue.SizeLimit"));
83	+	String queueRemoveAlgorithm = cp.getProperty(NAME, "Queue.RemoveAlgorithm");
84	+	int algorithm = StringUtils.getStringPos(queueRemoveAlgorithm, Queue.algorithms);
85	+	if(algorithm != -1) {
86	+	_logger.write(toString(), Logger.DEBUG, "Starting 2 Queues with size limit of "+queueSizeLimit+", using remove algorithm "+queueRemoveAlgorithm);
87	+	// we have valid values, so lets start it.
88	+	_alerterQueue = new Queue(queueSizeLimit, algorithm);
89	+	_monitorQueue = new Queue(queueSizeLimit, algorithm);
90	+	}
91	+	else {
92	+	_logger.write(toString(), Logger.WARNING, "Bad Queue Algorithm configuration, not known: "+queueRemoveAlgorithm);
93	+	// just don't activate a limit
94	+	_alerterQueue = new Queue();
95	+	_monitorQueue = new Queue();
96	+	}
97	+	} catch (PropertyNotFoundException e) {
98	+	_logger.write(toString(), Logger.DEBUG, "Optional config not set: "+e);
99	+	// just don't activate a limit
100	+	_alerterQueue = new Queue();
101	+	_monitorQueue = new Queue();
102	+	} catch (NumberFormatException e) {
103	+	_logger.write(toString(), Logger.WARNING, "Bad Queue SizeLimit configuration: "+e);
104	+	// just don't activate a limit
105	+	_alerterQueue = new Queue();
106	+	_monitorQueue = new Queue();
107		}
108	<	catch (Exception e) {
109	<	System.out.println("ERROR : " + e);
110	<	e.printStackTrace(System.out);
108	>
109	>	// startup monitors on these queues
110	>	try {
111	>	// try to get the interval, if this fails, we won't start up the monitor
112	>	int queueMonitorInterval = Integer.parseInt(cp.getProperty(NAME, "Queue.MonitorInterval"));
113	>	_alerterQueue.startMonitor(queueMonitorInterval*1000, _monitorQueue, NAME + " Alerter");
114	>	_monitorQueue.startMonitor(queueMonitorInterval*1000, _monitorQueue, NAME + " Monitor");
115	>	} catch (PropertyNotFoundException e) {
116	>	_logger.write(toString(), Logger.WARNING, "failed to find queue monitor config, disabling. " + e);
117	>	}
118	>
119	>	// setup the servant and connect
120	>	_logger.write(toString(), Logger.SYSINIT, "starting servant and connecting");
121	>	try {
122	>	ClientServant ref = new ClientServant(_monitorQueue);
123	>	org.omg.CORBA.Object objRef = _refman.getRootPOA().servant_to_reference(ref);
124	>	Client client = ClientHelper.narrow(objRef);
125	>
126	>	// this name maybe shouldn't be static
127	>	objRef = _refman.getCORBARef("iscream.ClientInterface.CorbaListener");
128	>	CorbaClientListener listener = CorbaClientListenerHelper.narrow(objRef);
129	>
130	>	_logger.write(toString(), Logger.SYSINIT, "connecting");
131	>	CorbaControlHandler handler = listener.connect(client, NAME);
132	>	handler.startData();
133		}
134	+	catch(Exception e) {
135	+	// not sure what to do here
136	+	// so we just log the error
137	+	_logger.write(toString(), Logger.ERROR, "ERROR - " + e.getMessage());
138	+	}
139	+
140	+	// setup the MonitorManager
141	+	MonitorManager monMan = MonitorManager.getInstance();
142	+	monMan.start();
143	+
144	+	// setup the AlerterManager
145	+	AlerterManager alertMan = AlerterManager.getInstance();
146	+	alertMan.start();
147	+
148	+	_logger.write(toString(), Logger.SYSINIT, "started");
149		}
150	+
151	+	/**
152	+	* Does a dependency check. Used mainly at startup to
153	+	* see if the required dependencies (components) are up
154	+	* and running.
155	+	*
156	+	* @return a boolean value, true if the depdencies are satisfied
157	+	*/
158	+	public boolean depCheck() {
159	+	try {
160	+	org.omg.CORBA.Object obj;
161	+	// first check the ConfigurationManager is alive
162	+	obj = _refman.getCORBARef("iscream.ConfigurationManager");
163	+	// then get some info on the CLI
164	+	ConfigurationProxy cp = ConfigurationProxy.getInstance();
165	+	String cli = cp.getProperty("RootFilter", "RootFilter.realtimeInterfaceName");
166	+	// finally check the CLI is alive
167	+	obj = _refman.getCORBARef("iscream.ClientInterface." + cli);
168	+	} catch(ComponentCORBAException e) {
169	+	System.err.println(toString() + ": Dependency Failure: "+e);
170	+	return false;
171	+	} catch(PropertyNotFoundException e) {
172	+	System.err.println(toString() + ": Unable to obtain configuration: "+e);
173	+	return false;
174	+	}
175	+	// dependency check suceeded
176	+	return true;
177	+	}
178	+
179	+	/**
180	+	* Overrides the {@link java.lang.Object#toString() Object.toString()}
181	+	* method to provide clean logging (every class should have this).
182	+	*
183	+	* This uses the uk.org.iscream.cms.server.util.FormatName class
184	+	* to format the toString()
185	+	*
186	+	* @return the name of this class and its CVS revision
187	+	*/
188	+	public String toString() {
189	+	return FormatName.getName(
190	+	NAME,
191	+	getClass().getName(),
192	+	REVISION);
193	+	}
194	+
195	+	//---PRIVATE METHODS---
196	+
197	+	//---ACCESSOR/MUTATOR METHODS---
198	+
199	+	//---ATTRIBUTES---
200	+
201	+	/**
202	+	* This holds a reference to the
203	+	* system logger that is being used.
204	+	*/
205	+	private Logger _logger;
206	+
207	+	/**
208	+	* A reference to the reference manager in use
209	+	*/
210	+	private ReferenceManager _refman = ReferenceManager.getInstance();
211	+
212	+	//---STATIC ATTRIBUTES---
213	+
214	+	/**
215	+	* A queue for the alerter manager
216	+	*/
217	+	public static Queue _alerterQueue;
218	+
219	+	/**
220	+	* A queue for the monitor manager
221	+	*/
222	+	public static Queue _monitorQueue;
223
224		}

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