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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 1.6 by ajm, Thu Nov 30 03:11:02 2000 UTC vs.
Revision 1.27 by ajm, Mon Feb 26 02:15:11 2001 UTC

#	Line 1 | Line 1
1	+
2		//---PACKAGE DECLARATION---
3		package uk.ac.ukc.iscream.rootfilter;
4
5		//---IMPORTS---
6		import uk.ac.ukc.iscream.util.*;
7		import uk.ac.ukc.iscream.core.*;
8	+	import uk.ac.ukc.iscream.componentmanager.*;
9	+	import uk.ac.ukc.iscream.clientinterface.*;
10
11		/**
12	<	* A Filter Startup Class
12	>	* The root filter is what all filters talk to
13	>	* Hosts cannot talk to this implementation of a filter.
14	>	* It provides hooks to all data interfaces for the system
15	>	* namely the client interface and the db interface.
16	>	* This is an i-scream component that starts the
17	>	* RootFilter services.
18		*
19		* @author  $Author$
20		* @version $Id$
21		*/
22	<	class RootFilterMain {
22	>	public class RootFilter implements Component {
23
24		//---FINAL ATTRIBUTES---
25
#	Line 19 | Line 27 | class RootFilterMain {
27		* The current CVS revision of this class
28		*/
29		public static final String REVISION = "$Revision$";
30	<
30	>
31		//---STATIC METHODS---
32
33	<	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	<	// ***************************************
33	>	//---CONSTRUCTORS---
34
35	<	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) + ")";
35	>	//---PUBLIC METHODS---
36
37	<	refman.getLogger().write(toString, Logger.SYSINIT, "coming up");
37	>	/**
38	>	* This starts the Root Filter for the system
39	>	*/
40	>	public void start() throws ComponentStartException {
41	>	// get references to key objects
42	>	_refman = ReferenceManager.getInstance();
43	>	_logger = ReferenceManager.getInstance().getLogger();
44	>
45	>	_logger.write(toString(), Logger.SYSINIT, "coming up");
46
47		// configuration variables we require
48		String ourName = null;
49	+	String realInterface = null;
50	+	String dbInterface = null;
51	+	int queueMonitorInterval = 0;
52
53	<	Configuration config = refman.getCM().getConfiguration("RootFilter");
53	>	Configuration config = _refman.getCM().getConfiguration("RootFilter");
54		if (config == null) {
55	<	throw new RuntimeException ("CRITICAL:Unable to obtain configuration" +
56	<	"         Advise you check the i-scream log for more information.");
57	<	} else {
55	>	throw new ComponentStartException("Unable to obtain configuration for component");
56	>	}
57	>	else {
58		try {
59	<	ourName = config.getProperty("Filter.rootFilter");
59	>	// get the configuration properties we need
60	>	ourName = config.getProperty("RootFilter.name");
61	>
62	>	queueMonitorInterval = Integer.parseInt(config.getProperty("Queue.MonitorInterval"));
63		} catch (org.omg.CORBA.MARSHAL e) {
64	<	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	<
64	>	throw new ComponentStartException("Unable to obtain requried configuration property for component");
65		}
66	+	try {
67	+	// get the optional configuration properties
68	+	realInterface = config.getProperty("RootFilter.realtimeInterfaceName");
69	+	dbInterface = config.getProperty("RootFilter.dbInterfaceName");
70	+	} catch (org.omg.CORBA.MARSHAL e) {
71	+	// we can ignore that fact
72	+	}
73		}
74	+
75		// now we have the name of the Root Filter we set it
76	<	refman.setName(ourName);
58	<	refman.getLogger().write(toString, Logger.SYSINIT, "configured");
76	>	NAME = ourName;
77
78	<	// 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());
78	>	_logger.write(toString(), Logger.SYSINIT, "configured");
79
80	<	// start the POA off
81	<	// now we are running, we just need to serve
82	<	// so we ask the orb to block for us until it has finished
83	<	refman.activatePOA();
84	<	refman.getLogger().write(toString, Logger.SYSINIT, "started");
85	<	refman.getORB().run();
80	>	ClientInterface ciReal = null, ciDB = null;
81	>	// get reference to the client interfaces - the real time one
82	>	if (realInterface != null) {
83	>	ciReal = ClientInterfaceHelper.narrow(_refman.getCORBARef("iscream.ClientInterface." + realInterface));
84	>	}
85	>	// get reference to the client interfaces - and the db one
86	>	if (dbInterface != null) {
87	>	ciDB = ClientInterfaceHelper.narrow(_refman.getCORBARef("iscream.ClientInterface." + dbInterface));
88	>	}
89	>
90	>	Queue queue = new Queue();
91	>	// startup a monitor on this queue, every minute
92	>	String queueName = NAME + " RootFilter";
93	>	queue.startMonitor(queueMonitorInterval*1000, queueName);
94	>
95	>	if (realInterface == null) {
96	>	_logger.write(toString(), Logger.DEBUG, "hooked to interfaces - " + dbInterface);
97	>	CIWrapper c = new CIWrapper(ciDB, queue);
98	>	c.start();
99	>	} else if (dbInterface == null) {
100	>	_logger.write(toString(), Logger.DEBUG, "hooked to interfaces - " + realInterface);
101	>	CIWrapper c = new CIWrapper(ciReal, queue);
102	>	c.start();
103	>	} else {
104	>	_logger.write(toString(), Logger.DEBUG, "hooked to interfaces - " + realInterface + " & " + dbInterface);
105	>	CIWrapper c = new CIWrapper(ciReal, queue);
106	>	c.start();
107	>	c = new CIWrapper(ciDB, queue);
108	>	c.start();
109	>	}
110	>
111	>	// RootFilterServant start (for inbound child filter data)
112	>	_logger.write(toString(), Logger.DEBUG, "starting Root Filter");
113	>	RootFilterServant filterServant = new RootFilterServant(queue);
114	>	// bind to the naming service as a filter
115	>	_refman.bindToOrb(filterServant, "iscream.Filter." + RootFilter.NAME);
116	>
117	>	_logger.write(toString(), Logger.SYSINIT, "started");
118	>
119		}
120	<
121	<	/**
122	<	* A simple method to print the usage of this class.
123	<	* It never returns, but instead exits to the system
124	<	* with a value 1, to indicate the system did not start
125	<	* properly.
120	>
121	>	/**
122	>	* Overrides the {@link java.lang.Object#toString() Object.toString()}
123	>	* method to provide clean logging (every class should have this).
124	>	*
125	>	* This uses the uk.ac.ukc.iscream.util.NameFormat class
126	>	* to format the toString()
127	>	*
128	>	* @return the name of this class and its CVS revision
129		*/
130	<	public static void usage() {
131	<	System.out.println("USAGE: java FilterMain <name>");
132	<	System.out.println("WHERE <name>:");
133	<	System.out.println("      The unique identifier for the Filter in the system.");
134	<	System.exit(1);
130	>	public String toString() {
131	>	return FormatName.getName(
132	>	NAME,
133	>	getClass().getName(),
134	>	REVISION);
135		}
136
86	–	//---CONSTRUCTORS---
87	–
88	–	//---PUBLIC METHODS---
89	–
137		//---PRIVATE METHODS---
138
139		//---ACCESSOR/MUTATOR METHODS---
140
141		//---ATTRIBUTES---
142
143	+	/**
144	+	* This holds a reference to the
145	+	* system logger that is being used.
146	+	*/
147	+	private Logger _logger;
148	+
149	+	/**
150	+	* A reference to the reference manager in use
151	+	*/
152	+	private ReferenceManager _refman;
153	+
154		//---STATIC ATTRIBUTES---
155	+
156	+	/**
157	+	* The friendly name for this component, used by
158	+	* all related classes.
159	+	* This is set from the configuration.
160	+	*/
161	+	public static String NAME;
162
163		}

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