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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 1.8 by ajm, Mon Dec 4 18:12:13 2000 UTC vs.
Revision 1.26 by ajm, Fri Feb 23 17:08:50 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 RootFilterMain {
21	>	public class RootFilter implements Component {
22
23		//---FINAL ATTRIBUTES---
24
#	Line 20 | Line 26 | class RootFilterMain {
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) {
27	<	// ***************************************
28	<	// VERY TEMPORARY - will find a better way
29	<	System.setProperty("org.omg.CORBA.ORBClass","jacorb.orb.ORB");
30	<	System.setProperty("org.omg.CORBA.ORBSingletonClass","jacorb.orb.ORBSingleton");
31	<	// ***************************************
32	>	//---CONSTRUCTORS---
33
34	<	ReferenceManager refman = ReferenceManager.init(null, null);
34	<
35	<	// can't have a real toString() :)
36	<	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	>	// get references to key objects
41	>	_refman = ReferenceManager.getInstance();
42	>	_logger = ReferenceManager.getInstance().getLogger();
43	>
44	>	_logger.write(toString(), Logger.SYSINIT, "coming up");
45
46		// configuration variables we require
47		String ourName = null;
48		String realInterface = null;
49		String dbInterface = null;
50	+	int queueMonitorInterval = 0;
51
52	<	Configuration config = refman.getCM().getConfiguration("RootFilter");
52	>	Configuration config = _refman.getCM().getConfiguration("RootFilter");
53		if (config == null) {
54	<	throw new RuntimeException ("CRITICAL:Unable to obtain configuration" +
55	<	"         Advise you check the i-scream log for more information.");
56	<	} else {
54	>	throw new ComponentStartException("Unable to obtain configuration for component");
55	>	}
56	>	else {
57		try {
58	+	// get the configuration properties we need
59		ourName = config.getProperty("RootFilter.name");
60		realInterface = config.getProperty("RootFilter.realtimeInterfaceName");
61		dbInterface = config.getProperty("RootFilter.dbInterfaceName");
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");
56	<	throw new RuntimeException ("CRITICAL:Unable to obtain required configuration property" +
57	<	"         Advise you check the i-scream log for more information.");
58	<
64	>	throw new ComponentStartException("Unable to obtain requried configuration property for component");
65		}
66		}
67	+
68		// now we have the name of the Root Filter we set it
69	<	refman.setName(ourName);
70	<	toString = "RootFilter{" + refman.getName() + "}(" + REVISION.substring(11, REVISION.length() - 2) + ")";
71	<	refman.getLogger().write(toString, Logger.SYSINIT, "configured");
72	<
69	>	NAME = ourName;
70	>
71	>	_logger.write(toString(), Logger.SYSINIT, "configured");
72	>
73	>	ClientInterface ciReal = null, ciDB = null;
74		// get reference to the client interfaces - the real time one
75	<	ClientInterface ciReal = ClientInterfaceHelper.narrow(refman.getCORBARef("iscream.ClientInterface." + realInterface));
76	<	// - the db one ... but it's not done yet
77	<	//ClientInterface ciDB = ClientInterfaceHelper.narrow(refman.getCORBARef("iscream.ClientInterface." + dbInterface));
78	<	// so for the time being we null it.
79	<	ClientInterface ciDB = null;
80	<	refman.getLogger().write(toString, Logger.DEBUG, "hooked to interfaces - " + realInterface + " & " + dbInterface);
75	>	if (realInterface != null) {
76	>	ciReal = ClientInterfaceHelper.narrow(_refman.getCORBARef("iscream.ClientInterface." + realInterface));
77	>	}
78	>	// get reference to the client interfaces - and the db one
79	>	if (dbInterface != null) {
80	>	ciDB = ClientInterfaceHelper.narrow(_refman.getCORBARef("iscream.ClientInterface." + dbInterface));
81	>	}
82
83	<	ClientInterface[] clientInterfaces = {ciReal, ciDB};
83	>	Queue queue = new Queue();
84	>	// startup a monitor on this queue, every minute
85	>	String queueName = NAME + " RootFilter";
86	>	queue.startMonitor(queueMonitorInterval*1000, queueName);
87
88	+	if (realInterface == null) {
89	+	_logger.write(toString(), Logger.DEBUG, "hooked to interfaces - " + dbInterface);
90	+	CIWrapper c = new CIWrapper(ciDB, queue);
91	+	c.start();
92	+	} else if (dbInterface == null) {
93	+	_logger.write(toString(), Logger.DEBUG, "hooked to interfaces - " + realInterface);
94	+	CIWrapper c = new CIWrapper(ciReal, queue);
95	+	c.start();
96	+	} else {
97	+	_logger.write(toString(), Logger.DEBUG, "hooked to interfaces - " + realInterface + " & " + dbInterface);
98	+	CIWrapper c = new CIWrapper(ciReal, queue);
99	+	c.start();
100	+	c = new CIWrapper(ciDB, queue);
101	+	c.start();
102	+	}
103	+
104		// RootFilterServant start (for inbound child filter data)
105	<	refman.getLogger().write(toString, Logger.DEBUG, "starting Root Filter");
106	<	RootFilterServant filterServant = new RootFilterServant(clientInterfaces);
105	>	_logger.write(toString(), Logger.DEBUG, "starting Root Filter");
106	>	RootFilterServant filterServant = new RootFilterServant(queue);
107		// bind to the naming service as a filter
108	<	refman.bindToOrb(filterServant, "iscream.Filter." + refman.getName());
108	>	_refman.bindToOrb(filterServant, "iscream.Filter." + RootFilter.NAME);
109
110	<	// start the POA off
111	<	// now we are running, we just need to serve
84	<	// so we ask the orb to block for us until it has finished
85	<	refman.activatePOA();
86	<	refman.getLogger().write(toString, Logger.SYSINIT, "started");
87	<	refman.getORB().run();
110	>	_logger.write(toString(), Logger.SYSINIT, "started");
111	>
112		}
113	<
114	<	/**
115	<	* A simple method to print the usage of this class.
116	<	* It never returns, but instead exits to the system
117	<	* with a value 1, to indicate the system did not start
118	<	* properly.
113	>
114	>	/**
115	>	* Overrides the {@link java.lang.Object#toString() Object.toString()}
116	>	* method to provide clean logging (every class should have this).
117	>	*
118	>	* This uses the uk.ac.ukc.iscream.util.NameFormat class
119	>	* to format the toString()
120	>	*
121	>	* @return the name of this class and its CVS revision
122		*/
123	<	public static void usage() {
124	<	System.out.println("USAGE: java FilterMain <name>");
125	<	System.out.println("WHERE <name>:");
126	<	System.out.println("      The unique identifier for the Filter in the system.");
127	<	System.exit(1);
123	>	public String toString() {
124	>	return FormatName.getName(
125	>	NAME,
126	>	getClass().getName(),
127	>	REVISION);
128		}
129
103	–	//---CONSTRUCTORS---
104	–
105	–	//---PUBLIC METHODS---
106	–
130		//---PRIVATE METHODS---
131
132		//---ACCESSOR/MUTATOR METHODS---
133
134		//---ATTRIBUTES---
135
136	+	/**
137	+	* This holds a reference to the
138	+	* system logger that is being used.
139	+	*/
140	+	private Logger _logger;
141	+
142	+	/**
143	+	* A reference to the reference manager in use
144	+	*/
145	+	private ReferenceManager _refman;
146	+
147		//---STATIC ATTRIBUTES---
148	+
149	+	/**
150	+	* The friendly name for this component, used by
151	+	* all related classes.
152	+	* This is set from the configuration.
153	+	*/
154	+	public static String NAME;
155
156		}

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