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root/i-scream/projects/cms/source/server/uk/org/iscream/cms/server/filtermanager/FilterManager.java

Comparing projects/cms/source/server/uk/org/iscream/cms/server/filtermanager/FilterManager.java (file contents):
Revision 1.9 by tdb, Wed Nov 29 19:19:12 2000 UTC vs.
Revision 1.25 by tdb, Sat May 18 18:16:02 2002 UTC

#	Line 1 | Line 1
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		//---PACKAGE DECLARATION---
21	<	package uk.ac.ukc.iscream.filtermanager;
21	>	package uk.org.iscream.cms.server.filtermanager;
22
23		//---IMPORTS---
24	<	import uk.ac.ukc.iscream.core.*;
25	<	import uk.ac.ukc.iscream.filter.*;
26	<	import org.omg.CORBA.*;
8	<	import org.omg.CosNaming.*;
24	>	import uk.org.iscream.cms.server.util.*;
25	>	import uk.org.iscream.cms.server.core.*;
26	>	import uk.org.iscream.cms.server.componentmanager.*;
27
28		/**
29	<	* A FilterManager
29	>	* The FilterManager handles initialisation
30	>	* of hosts with the system, allowing hosts to
31	>	* gain their configuration and a hook to a Filter
32	>	* to talk to.
33		*
34		* @author  $Author$
35		* @version $Id$
36		*/
37	<	class FilterManager {
37	>	public class FilterManager implements Component {
38
39		//---FINAL ATTRIBUTES---
40
#	Line 24 | Line 45 | class FilterManager {
45
46		//---STATIC METHODS---
47
48	<	public static void main(String[] args) {
49	<	System.setProperty("org.omg.CORBA.ORBClass","jacorb.orb.ORB");
50	<	System.setProperty("org.omg.CORBA.ORBSingletonClass","jacorb.orb.ORBSingleton");
48	>	//---CONSTRUCTORS---
49	>
50	>	/**
51	>	* Constructs a FilterManager with the name given
52	>	*
53	>	* @param givenName the name
54	>	*/
55	>	public FilterManager(String givenName) {
56	>	NAME = givenName;
57	>	}
58	>
59	>	//---PUBLIC METHODS---
60	>
61	>	/**
62	>	* This method starts the FilterManager
63	>	*/
64	>	public void start() throws ComponentStartException {
65	>	// get references to key objects
66	>	_logger = _refman.getLogger();
67
68	<	// can't have a real toString() :)
32	<	String toString = "FilterManager(" + REVISION.substring(11, REVISION.length() - 2) + ")";
68	>	_logger.write(toString(), Logger.SYSINIT, "coming up");
69
70	<	try {
71	<	ORB orb = ORB.init(args, null);
72	<
73	<	// something to hold objects
74	<	org.omg.CORBA.Object objRef = null;
75	<
76	<	// get a hook to the name service
77	<	objRef = orb.resolve_initial_references("NameService");
78	<	NamingContextExt ncRef = NamingContextExtHelper.narrow(objRef);
79	<
80	<	// get a ref to the Configurator & the Logger
81	<	objRef = ncRef.resolve(ncRef.to_name("iscream.ConfigurationManager"));
82	<	ConfigurationManager configManager = ConfigurationManagerHelper.narrow(objRef);
83	<	objRef = ncRef.resolve(ncRef.to_name("iscream.Logger"));
84	<	Logger logger = LoggerHelper.narrow(objRef);
85	<
86	<	logger.write(toString, Logger.SYSINIT, "coming up");
87	<
88	<	// create the servant
89	<	//FilterManagerServant servant = new FilterManagerServant(logger);
90	<
91	<	// register the servant with the name service
92	<	//objRef = poa.servant_to_reference(servant);
93	<	//ncRef.bind(ncRef.to_name("iscream.FilterManager"), objRef);
58	<
59	<	// start the POA off
60	<	//poa.the_POAManager().activate();
61	<
62	<	// get the config
63	<	Configuration myConfig = configManager.getConfiguration("FilterManager");
64	<
65	<	// some place holders for the configuration
66	<	int port = 0;
67	<
68	<	// did we?
69	<	if (myConfig == null) {
70	<	System.out.println("Failed: is it there?, can you read it?");
71	<	System.exit(1);
72	<	} else {
73	<
74	<	// get the property
75	<	try {
76	<	port = new Integer(myConfig.getProperty("FilterManager.listenPort")).intValue();
77	<	} catch (org.omg.CORBA.MARSHAL e) {
78	<	System.out.println("Caught org.omg.CORBA.MARSHAL, must be a null we got back");
79	<	System.exit(1);
80	<	}
81	<	}
82	<	logger.write(toString, Logger.SYSMSG, "configured");
83	<	logger.write(toString, Logger.SYSINIT, "starting listener");
84	<
85	<	HostListener hostListener = new HostListener(logger, configManager, port, ncRef);
86	<	hostListener.start();
87	<
88	<	logger.write(toString, Logger.SYSINIT, "started");
89	<
90	<	} catch (Exception e) {
91	<	System.err.println("FILTER MANAGER ERROR: " + e);
92	<	e.printStackTrace(System.out);
70	>	// startup a thread to listen for hosts
71	>	HostListener hostListener = new HostListener();
72	>	hostListener.start();
73	>
74	>	_logger.write(toString(), Logger.SYSINIT, "started");
75	>	}
76	>
77	>	/**
78	>	* Does a dependency check. Used mainly at startup to
79	>	* see if the required dependencies (components) are up
80	>	* and running.
81	>	*
82	>	* @return a boolean value, true if the depdencies are satisfied
83	>	*/
84	>	public boolean depCheck() {
85	>	// This also depends on Filters.. but only when requested.
86	>	// I believe the code is in place to handle that elsewhere.
87	>	try {
88	>	org.omg.CORBA.Object obj;
89	>	obj = _refman.getCORBARef("iscream.Logger");
90	>	obj = _refman.getCORBARef("iscream.ConfigurationManager");
91	>	} catch(ComponentCORBAException e) {
92	>	System.err.println(toString() + ": Dependency Failure: "+e);
93	>	return false;
94		}
95	+	// dependency check suceeded
96	+	return true;
97		}
98	+
99	+	/**
100	+	* Overrides the {@link java.lang.Object#toString() Object.toString()}
101	+	* method to provide clean logging (every class should have this).
102	+	*
103	+	* This uses the uk.org.iscream.cms.server.util.NameFormat class
104	+	* to format the toString()
105	+	*
106	+	* @return the name of this class and its CVS revision
107	+	*/
108	+	public String toString() {
109	+	return FormatName.getName(
110	+	NAME,
111	+	getClass().getName(),
112	+	REVISION);
113	+	}
114
96	–	//---CONSTRUCTORS---
97	–
98	–	//---PUBLIC METHODS---
99	–
115		//---PRIVATE METHODS---
116
117		//---ACCESSOR/MUTATOR METHODS---
118
119		//---ATTRIBUTES---
120
121	+	/**
122	+	* This is the friendly identifier of the
123	+	* component this class is running in.
124	+	* eg, a Filter may be called "filter1",
125	+	* If this class does not have an owning
126	+	* component,  a name from the configuration
127	+	* can be placed here.  This name could also
128	+	* be changed to null for utility classes.
129	+	*/
130	+	private String _name = FilterManager.NAME;
131	+
132	+	/**
133	+	* This holds a reference to the
134	+	* system logger that is being used.
135	+	*/
136	+	private Logger _logger;
137	+
138	+	/**
139	+	* A reference to the reference manager in use
140	+	*/
141	+	private ReferenceManager _refman = ReferenceManager.getInstance();
142	+
143		//---STATIC ATTRIBUTES---
144	+
145	+	/**
146	+	* The friendly name for this component, used by
147	+	* all related classes.
148	+	* This is set from the configuration.
149	+	*/
150	+	public static String NAME;
151
152		}

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