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root/i-scream/projects/cms/source/server/uk/org/iscream/cms/server/rootfilter/RootFilter.java

Comparing projects/cms/source/server/uk/org/iscream/cms/server/rootfilter/RootFilter.java (file contents):
Revision 1.5 by ajm, Thu Nov 30 03:06:39 2000 UTC vs.
Revision 1.23 by tdb, Sun Jan 28 06:03:58 2001 UTC

#	Line 4 | Line 4 | package uk.ac.ukc.iscream.rootfilter;
4		//---IMPORTS---
5		import uk.ac.ukc.iscream.util.*;
6		import uk.ac.ukc.iscream.core.*;
7	+	import uk.ac.ukc.iscream.componentmanager.*;
8	+	import uk.ac.ukc.iscream.clientinterface.*;
9
10		/**
11	<	* A Filter Startup Class
11	>	* The root filter is what all filters talk to
12	>	* Hosts cannot talk to this implementation of a filter.
13	>	* It provides hooks to all data interfaces for the system
14	>	* namely the client interface and the db interface.
15	>	* This is an i-scream component that starts the
16	>	* RootFilter services.
17		*
18		* @author  $Author$
19		* @version $Id$
20		*/
21	<	class FilterMain {
21	>	public class RootFilter implements Component {
22
23		//---FINAL ATTRIBUTES---
24
#	Line 19 | Line 26 | class FilterMain {
26		* The current CVS revision of this class
27		*/
28		public static final String REVISION = "$Revision$";
29	<
29	>
30		//---STATIC METHODS---
31
32	<	public static void main(String[] args) {
26	<	// ***************************************
27	<	// VERY TEMPORARY - will find a better way
28	<	System.setProperty("org.omg.CORBA.ORBClass","jacorb.orb.ORB");
29	<	System.setProperty("org.omg.CORBA.ORBSingletonClass","jacorb.orb.ORBSingleton");
30	<	// ***************************************
32	>	//---CONSTRUCTORS---
33
34	<	ReferenceManager refman = ReferenceManager.init(null, null);
33	<
34	<	// can't have a real toString() :)
35	<	String toString = "RootFilter{" + refman.getName() + "}(" + REVISION.substring(11, REVISION.length() - 2) + ")";
34	>	//---PUBLIC METHODS---
35
36	<	refman.getLogger().write(toString, Logger.SYSINIT, "coming up");
36	>	/**
37	>	* This starts the Root Filter for the system
38	>	*/
39	>	public void start() throws ComponentStartException {
40	>
41	>	_logger.write(toString(), Logger.SYSINIT, "coming up");
42
43		// configuration variables we require
44		String ourName = null;
45	+	String realInterface = null;
46	+	String dbInterface = null;
47
48	<	Configuration config = refman.getCM().getConfiguration("RootFilter");
48	>	Configuration config = _refman.getCM().getConfiguration("RootFilter");
49		if (config == null) {
50	<	throw new RuntimeException ("CRITICAL:Unable to obtain configuration" +
51	<	"         Advise you check the i-scream log for more information.");
52	<	} else {
50	>	throw new ComponentStartException("Unable to obtain configuration for component");
51	>	}
52	>	else {
53		try {
54	<	ourName = config.getProperty("Filter.rootFilter");
54	>	// get the configuration properties we need
55	>	ourName = config.getProperty("RootFilter.name");
56	>	realInterface = config.getProperty("RootFilter.realtimeInterfaceName");
57	>	dbInterface = config.getProperty("RootFilter.dbInterfaceName");
58		} catch (org.omg.CORBA.MARSHAL e) {
59	<	refman.getLogger().write(toString, Logger.FATAL, "required config property not present");
51	<	throw new RuntimeException ("CRITICAL:Unable to obtain required configuration property" +
52	<	"         Advise you check the i-scream log for more information.");
53	<
59	>	throw new ComponentStartException("Unable to obtain requried configuration property for component");
60		}
61		}
62	+
63		// now we have the name of the Root Filter we set it
64	<	refman.setName(ourName);
58	<	refman.getLogger().write(toString, Logger.SYSINIT, "configured");
64	>	NAME = ourName;
65
66	<	// FilterServant start (for inbound child filter data)
61	<	refman.getLogger().write(toString, Logger.DEBUG, "starting Root Filter");
62	<	RootFilterServant filterServant = new RootFilterServant();
63	<	refman.bindToOrb(filterServant, "iscream.Filter." + refman.getName());
66	>	_logger.write(toString(), Logger.SYSINIT, "configured");
67
68	<	// start the POA off
69	<	// now we are running, we just need to serve
70	<	// so we ask the orb to block for us until it has finished
71	<	refman.activatePOA();
72	<	refman.getLogger().write(toString, Logger.SYSINIT, "started");
73	<	refman.getORB().run();
68	>	ClientInterface ciReal = null, ciDB = null;
69	>	// get reference to the client interfaces - the real time one
70	>	if (realInterface != null) {
71	>	ciReal = ClientInterfaceHelper.narrow(_refman.getCORBARef("iscream.ClientInterface." + realInterface));
72	>	}
73	>	// get reference to the client interfaces - and the db one
74	>	if (dbInterface != null) {
75	>	ciDB = ClientInterfaceHelper.narrow(_refman.getCORBARef("iscream.ClientInterface." + dbInterface));
76	>	}
77	>
78	>	Queue queue = new Queue();
79	>
80	>	if (realInterface == null) {
81	>	_logger.write(toString(), Logger.DEBUG, "hooked to interfaces - " + dbInterface);
82	>	CIWrapper c = new CIWrapper(ciDB, queue);
83	>	c.start();
84	>	} else if (dbInterface == null) {
85	>	_logger.write(toString(), Logger.DEBUG, "hooked to interfaces - " + realInterface);
86	>	CIWrapper c = new CIWrapper(ciReal, queue);
87	>	c.start();
88	>	} else {
89	>	_logger.write(toString(), Logger.DEBUG, "hooked to interfaces - " + realInterface + " & " + dbInterface);
90	>	CIWrapper c = new CIWrapper(ciReal, queue);
91	>	c.start();
92	>	c = new CIWrapper(ciDB, queue);
93	>	c.start();
94	>	}
95	>
96	>	// RootFilterServant start (for inbound child filter data)
97	>	_logger.write(toString(), Logger.DEBUG, "starting Root Filter");
98	>	RootFilterServant filterServant = new RootFilterServant(queue);
99	>	// bind to the naming service as a filter
100	>	_refman.bindToOrb(filterServant, "iscream.Filter." + RootFilter.NAME);
101	>
102	>	_logger.write(toString(), Logger.SYSINIT, "started");
103	>
104		}
105	<
106	<	/**
107	<	* A simple method to print the usage of this class.
108	<	* It never returns, but instead exits to the system
109	<	* with a value 1, to indicate the system did not start
110	<	* properly.
105	>
106	>	/**
107	>	* Overrides the {@link java.lang.Object#toString() Object.toString()}
108	>	* method to provide clean logging (every class should have this).
109	>	*
110	>	* This uses the uk.ac.ukc.iscream.util.NameFormat class
111	>	* to format the toString()
112	>	*
113	>	* @return the name of this class and its CVS revision
114		*/
115	<	public static void usage() {
116	<	System.out.println("USAGE: java FilterMain <name>");
117	<	System.out.println("WHERE <name>:");
118	<	System.out.println("      The unique identifier for the Filter in the system.");
119	<	System.exit(1);
115	>	public String toString() {
116	>	return FormatName.getName(
117	>	NAME,
118	>	getClass().getName(),
119	>	REVISION);
120		}
121
86	–	//---CONSTRUCTORS---
87	–
88	–	//---PUBLIC METHODS---
89	–
122		//---PRIVATE METHODS---
123
124		//---ACCESSOR/MUTATOR METHODS---
125
126		//---ATTRIBUTES---
127
128	+	/**
129	+	* This holds a reference to the
130	+	* system logger that is being used.
131	+	*/
132	+	private Logger _logger = ReferenceManager.getInstance().getLogger();
133	+
134	+	/**
135	+	* A reference to the reference manager in use
136	+	*/
137	+	private ReferenceManager _refman = ReferenceManager.getInstance();
138	+
139		//---STATIC ATTRIBUTES---
140	+
141	+	/**
142	+	* The friendly name for this component, used by
143	+	* all related classes.
144	+	* This is set from the configuration.
145	+	*/
146	+	public static String NAME;
147
148		}

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