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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 1.24 by tdb, Wed Mar 20 13:40:29 2002 UTC

#	Line 1 | Line 1
1		//---PACKAGE DECLARATION---
2	+	package uk.org.iscream.cms.server.filtermanager;
3
4		//---IMPORTS---
5	<	import uk.ac.ukc.iscream.core.*;
6	<	import uk.ac.ukc.iscream.filter.*;
7	<	import org.omg.CORBA.*;
7	<	import org.omg.CosNaming.*;
8	<	import org.omg.PortableServer.*;
5	>	import uk.org.iscream.cms.server.util.*;
6	>	import uk.org.iscream.cms.server.core.*;
7	>	import uk.org.iscream.cms.server.componentmanager.*;
8
9		/**
10	<	* A FilterManager
10	>	* The FilterManager handles initialisation
11	>	* of hosts with the system, allowing hosts to
12	>	* gain their configuration and a hook to a Filter
13	>	* to talk to.
14		*
15		* @author  $Author$
16		* @version $Id$
17		*/
18	<	class FilterManager {
18	>	public class FilterManager implements Component {
19
20		//---FINAL ATTRIBUTES---
21
#	Line 24 | Line 26 | class FilterManager {
26
27		//---STATIC METHODS---
28
29	<	public static void main(String[] args) {
30	<	System.setProperty("org.omg.CORBA.ORBClass","jacorb.orb.ORB");
31	<	System.setProperty("org.omg.CORBA.ORBSingletonClass","jacorb.orb.ORBSingleton");
29	>	//---CONSTRUCTORS---
30	>
31	>	/**
32	>	* Constructs a FilterManager with the name given
33	>	*
34	>	* @param givenName the name
35	>	*/
36	>	public FilterManager(String givenName) {
37	>	NAME = givenName;
38	>	}
39	>
40	>	//---PUBLIC METHODS---
41	>
42	>	/**
43	>	* This method starts the FilterManager
44	>	*/
45	>	public void start() throws ComponentStartException {
46	>	// get references to key objects
47	>	_logger = _refman.getLogger();
48
49	<	// can't have a real toString() :)
32	<	String toString = "FilterManager(" + REVISION.substring(11, REVISION.length() - 2) + ")";
49	>	_logger.write(toString(), Logger.SYSINIT, "coming up");
50
51	<	try {
52	<	ORB orb = ORB.init(args, null);
53	<
54	<	// something to hold objects
55	<	org.omg.CORBA.Object objRef = null;
56	<
57	<	// get the Root POA
58	<	objRef = orb.resolve_initial_references("RootPOA");
59	<	POA poa = POAHelper.narrow(objRef);
60	<
61	<	// get a hook to the name service
62	<	objRef = orb.resolve_initial_references("NameService");
63	<	NamingContextExt ncRef = NamingContextExtHelper.narrow(objRef);
64	<
65	<	// get a ref to the Configurator & the Logger
66	<	objRef = ncRef.resolve(ncRef.to_name("iscream.ConfigurationManager"));
67	<	ConfigurationManager configManager = ConfigurationManagerHelper.narrow(objRef);
68	<	objRef = ncRef.resolve(ncRef.to_name("iscream.Logger"));
69	<	Logger logger = LoggerHelper.narrow(objRef);
70	<
71	<	logger.write(toString, Logger.SYSINIT, "coming up");
72	<
73	<	// create the filterManagerRef to our servant
74	<	//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);
51	>	// startup a thread to listen for hosts
52	>	HostListener hostListener = new HostListener();
53	>	hostListener.start();
54	>
55	>	_logger.write(toString(), Logger.SYSINIT, "started");
56	>	}
57	>
58	>	/**
59	>	* Does a dependency check. Used mainly at startup to
60	>	* see if the required dependencies (components) are up
61	>	* and running.
62	>	*
63	>	* @return a boolean value, true if the depdencies are satisfied
64	>	*/
65	>	public boolean depCheck() {
66	>	// This also depends on Filters.. but only when requested.
67	>	// I believe the code is in place to handle that elsewhere.
68	>	try {
69	>	org.omg.CORBA.Object obj;
70	>	obj = _refman.getCORBARef("iscream.Logger");
71	>	obj = _refman.getCORBARef("iscream.ConfigurationManager");
72	>	} catch(ComponentCORBAException e) {
73	>	System.err.println(toString() + ": Dependency Failure: "+e);
74	>	return false;
75		}
76	+	// dependency check suceeded
77	+	return true;
78		}
79	+
80	+	/**
81	+	* Overrides the {@link java.lang.Object#toString() Object.toString()}
82	+	* method to provide clean logging (every class should have this).
83	+	*
84	+	* This uses the uk.org.iscream.cms.server.util.NameFormat class
85	+	* to format the toString()
86	+	*
87	+	* @return the name of this class and its CVS revision
88	+	*/
89	+	public String toString() {
90	+	return FormatName.getName(
91	+	NAME,
92	+	getClass().getName(),
93	+	REVISION);
94	+	}
95
100	–	//---CONSTRUCTORS---
101	–
102	–	//---PUBLIC METHODS---
103	–
96		//---PRIVATE METHODS---
97
98		//---ACCESSOR/MUTATOR METHODS---
99
100		//---ATTRIBUTES---
101
102	+	/**
103	+	* This is the friendly identifier of the
104	+	* component this class is running in.
105	+	* eg, a Filter may be called "filter1",
106	+	* If this class does not have an owning
107	+	* component,  a name from the configuration
108	+	* can be placed here.  This name could also
109	+	* be changed to null for utility classes.
110	+	*/
111	+	private String _name = FilterManager.NAME;
112	+
113	+	/**
114	+	* This holds a reference to the
115	+	* system logger that is being used.
116	+	*/
117	+	private Logger _logger;
118	+
119	+	/**
120	+	* A reference to the reference manager in use
121	+	*/
122	+	private ReferenceManager _refman = ReferenceManager.getInstance();
123	+
124		//---STATIC ATTRIBUTES---
125	+
126	+	/**
127	+	* The friendly name for this component, used by
128	+	* all related classes.
129	+	* This is set from the configuration.
130	+	*/
131	+	public static String NAME;
132
133		}

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