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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 1.6 by ajm, Tue Nov 21 22:13:15 2000 UTC vs.
Revision 1.26 by tdb, Tue May 21 16:47:18 2002 UTC

#	Line 1 | Line 1
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		//---PACKAGE DECLARATION---
22	+	package uk.org.iscream.cms.server.filtermanager;
23
24		//---IMPORTS---
25	<	import uk.ac.ukc.iscream.core.*;
26	<	import uk.ac.ukc.iscream.filter.*;
27	<	import org.omg.CORBA.*;
7	<	import org.omg.CosNaming.*;
8	<	import org.omg.PortableServer.*;
25	>	import uk.org.iscream.cms.server.util.*;
26	>	import uk.org.iscream.cms.server.core.*;
27	>	import uk.org.iscream.cms.server.componentmanager.*;
28
29		/**
30	<	* A FilterManager
30	>	* The FilterManager handles initialisation
31	>	* of hosts with the system, allowing hosts to
32	>	* gain their configuration and a hook to a Filter
33	>	* to talk to.
34		*
35		* @author  $Author$
36		* @version $Id$
37		*/
38	<	class FilterManager {
38	>	public class FilterManager implements Component {
39
40		//---FINAL ATTRIBUTES---
41
#	Line 24 | Line 46 | class FilterManager {
46
47		//---STATIC METHODS---
48
49	<	public static void main(String[] args) {
50	<	System.setProperty("org.omg.CORBA.ORBClass","jacorb.orb.ORB");
51	<	System.setProperty("org.omg.CORBA.ORBSingletonClass","jacorb.orb.ORBSingleton");
49	>	//---CONSTRUCTORS---
50	>
51	>	/**
52	>	* Constructs a FilterManager with the name given
53	>	*
54	>	* @param givenName the name
55	>	*/
56	>	public FilterManager(String givenName) {
57	>	NAME = givenName;
58	>	}
59	>
60	>	//---PUBLIC METHODS---
61	>
62	>	/**
63	>	* This method starts the FilterManager
64	>	*/
65	>	public void start() throws ComponentStartException {
66	>	// get references to key objects
67	>	_logger = _refman.getLogger();
68
69	<	// can't have a real toString() :)
32	<	String toString = "FilterManager(" + REVISION.substring(11, REVISION.length() - 2) + ")";
69	>	_logger.write(toString(), Logger.SYSINIT, "coming up");
70
71	<	try {
72	<	ORB orb = ORB.init(args, null);
73	<
74	<	// something to hold objects
75	<	org.omg.CORBA.Object objRef = null;
76	<
77	<	// get the Root POA
78	<	objRef = orb.resolve_initial_references("RootPOA");
79	<	POA poa = POAHelper.narrow(objRef);
80	<
81	<	// get a hook to the name service
82	<	objRef = orb.resolve_initial_references("NameService");
83	<	NamingContextExt ncRef = NamingContextExtHelper.narrow(objRef);
84	<
85	<	// get a ref to the Configurator & the Logger
86	<	objRef = ncRef.resolve(ncRef.to_name("iscream.ConfigurationManager"));
87	<	ConfigurationManager configManager = ConfigurationManagerHelper.narrow(objRef);
88	<	objRef = ncRef.resolve(ncRef.to_name("iscream.Logger"));
89	<	Logger logger = LoggerHelper.narrow(objRef);
90	<
91	<	logger.write(toString, Logger.SYSINIT, "coming up");
92	<
93	<	// create the filterManagerRef to our servant
94	<	//filterManagerRef = new FilterManagerServant;
58	<
59	<	// register the servant with the name service
60	<	//objRef = poa.servant_to_reference(filterManagerRef);
61	<	//ncRef.bind(ncRef.to_name("iscream.FilterManager"), objRef);
62	<
63	<	// start the POA off
64	<	poa.the_POAManager().activate();
65	<
66	<	// get the config
67	<	Configuration myConfig = configManager.getConfiguration("FilterManager");
68	<
69	<	// some place holders for the configuration
70	<	int port = 0;
71	<
72	<	// did we?
73	<	if (myConfig == null) {
74	<	System.out.println("Failed: is it there?, can you read it?");
75	<	System.exit(1);
76	<	} else {
77	<
78	<	// get the property
79	<	try {
80	<	port = new Integer(myConfig.getProperty("FilterManager.listenPort")).intValue();
81	<	} catch (org.omg.CORBA.MARSHAL e) {
82	<	System.out.println("Caught org.omg.CORBA.MARSHAL, must be a null we got back");
83	<	System.exit(1);
84	<	}
85	<	}
86	<	logger.write(toString, Logger.SYSINIT, "configured");
87	<	logger.write(toString, Logger.SYSINIT, "starting listener");
88	<
89	<	FilterManagerListener fml = new FilterManagerListener(logger, configManager, port);
90	<	fml.start();
91	<
92	<	logger.write(toString, Logger.SYSINIT, "started");
93	<
94	<	} catch (Exception e) {
95	<	System.err.println("FILTER MANAGER ERROR: " + e);
96	<	e.printStackTrace(System.out);
71	>	// startup a thread to listen for hosts
72	>	HostListener hostListener = new HostListener();
73	>	hostListener.start();
74	>
75	>	_logger.write(toString(), Logger.SYSINIT, "started");
76	>	}
77	>
78	>	/**
79	>	* Does a dependency check. Used mainly at startup to
80	>	* see if the required dependencies (components) are up
81	>	* and running.
82	>	*
83	>	* @return a boolean value, true if the depdencies are satisfied
84	>	*/
85	>	public boolean depCheck() {
86	>	// This also depends on Filters.. but only when requested.
87	>	// I believe the code is in place to handle that elsewhere.
88	>	try {
89	>	org.omg.CORBA.Object obj;
90	>	obj = _refman.getCORBARef("iscream.Logger");
91	>	obj = _refman.getCORBARef("iscream.ConfigurationManager");
92	>	} catch(ComponentCORBAException e) {
93	>	System.err.println(toString() + ": Dependency Failure: "+e);
94	>	return false;
95		}
96	+	// dependency check suceeded
97	+	return true;
98		}
99	+
100	+	/**
101	+	* Overrides the {@link java.lang.Object#toString() Object.toString()}
102	+	* method to provide clean logging (every class should have this).
103	+	*
104	+	* This uses the uk.org.iscream.cms.server.util.NameFormat class
105	+	* to format the toString()
106	+	*
107	+	* @return the name of this class and its CVS revision
108	+	*/
109	+	public String toString() {
110	+	return FormatName.getName(
111	+	NAME,
112	+	getClass().getName(),
113	+	REVISION);
114	+	}
115
100	–	//---CONSTRUCTORS---
101	–
102	–	//---PUBLIC METHODS---
103	–
116		//---PRIVATE METHODS---
117
118		//---ACCESSOR/MUTATOR METHODS---
119
120		//---ATTRIBUTES---
121
122	+	/**
123	+	* This is the friendly identifier of the
124	+	* component this class is running in.
125	+	* eg, a Filter may be called "filter1",
126	+	* If this class does not have an owning
127	+	* component,  a name from the configuration
128	+	* can be placed here.  This name could also
129	+	* be changed to null for utility classes.
130	+	*/
131	+	private String _name = FilterManager.NAME;
132	+
133	+	/**
134	+	* This holds a reference to the
135	+	* system logger that is being used.
136	+	*/
137	+	private Logger _logger;
138	+
139	+	/**
140	+	* A reference to the reference manager in use
141	+	*/
142	+	private ReferenceManager _refman = ReferenceManager.getInstance();
143	+
144		//---STATIC ATTRIBUTES---
145	+
146	+	/**
147	+	* The friendly name for this component, used by
148	+	* all related classes.
149	+	* This is set from the configuration.
150	+	*/
151	+	public static String NAME;
152
153		}

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