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root/i-scream/projects/cms/source/server/uk/org/iscream/cms/server/filter/FilterMain.java

Comparing projects/cms/source/server/uk/org/iscream/cms/server/filter/FilterMain.java (file contents):
Revision 1.13 by ajm, Thu Nov 30 02:18:51 2000 UTC vs.
Revision 1.18 by tdb, Fri Jan 12 00:45:25 2001 UTC

#	Line 2 | Line 2
2		package uk.ac.ukc.iscream.filter;
3
4		//---IMPORTS---
5	<	import uk.ac.ukc.iscream.refman.*;
5	>	import uk.ac.ukc.iscream.util.*;
6		import uk.ac.ukc.iscream.core.*;
7		import uk.ac.ukc.iscream.filter.*;
8	–	import org.omg.CORBA.*;
9	–	import org.omg.CosNaming.*;
10	–	import org.omg.PortableServer.*;
8
9		/**
10		* A Filter Startup Class
11	+	* A filter is an iscream component.
12		*
13		* @author  $Author$
14		* @version $Id$
15		*/
16	<	class FilterMain {
16	>	public class FilterMain implements uk.ac.ukc.iscream.util.Component {
17
18		//---FINAL ATTRIBUTES---
19
#	Line 26 | Line 24 | class FilterMain {
24
25		//---STATIC METHODS---
26
27	<	public static void main(String[] args) {
28	<	// ***************************************
29	<	// VERY TEMPORARY - will find a better way
30	<	System.setProperty("org.omg.CORBA.ORBClass","jacorb.orb.ORB");
31	<	System.setProperty("org.omg.CORBA.ORBSingletonClass","jacorb.orb.ORBSingleton");
32	<	// ***************************************
27	>	//---CONSTRUCTORS---
28	>
29	>	/**
30	>	* Constructs a Filter with the name given
31	>	*
32	>	* @param givenName the name
33	>	*/
34	>	public FilterMain(String givenName) {
35	>	NAME = givenName;
36	>	}
37
38	<	// get our name from the command line
39	<	String ourName = "";
40	<	if (args.length == 1) {
41	<	ourName = args[0];
42	<	}
43	<	else {
44	<	usage();
45	<	}
44	<
45	<	// can't have a real toString() :)
46	<	String toString = "Filter{" + ourName + "}(" + REVISION.substring(11, REVISION.length() - 2) + ")";
47	<
48	<	ReferenceManager refman = ReferenceManager.init(null, ourName);
49	<
50	<	refman.getLogger().write(toString, Logger.SYSINIT, "coming up");
38	>	//---PUBLIC METHODS---
39	>
40	>	/**
41	>	* Starts the Filter component
42	>	*/
43	>	public void start() throws ComponentStartException {
44	>
45	>	_logger.write(toString(), Logger.SYSINIT, "coming up");
46
47		// configuration variables we require
48		int UDPListenPort = 0;
49		int TCPListenPort = 0;
50		String parentFilterName = null;
51
52	<	Configuration config = refman.getCM().getConfiguration(refman.getName());
52	>	Configuration config = _refman.getCM().getConfiguration(FilterMain.NAME);
53		if (config == null) {
54	<	throw new RuntimeException ("CRITICAL:Unable to obtain configuration" +
55	<	"         Advise you check the i-scream log for more information.");
54	>	System.err.println("CRITICAL:Unable to obtain configuration" +
55	>	"\n         Advise you check the i-scream log for more information.");
56	>	_logger.write(toString(), Logger.FATAL, "ERROR - unable to obtain configuration");
57	>	System.exit(1);
58		} else {
59		try {
60		UDPListenPort = Integer.parseInt(config.getProperty("Filter.UDPListenPort"));
61		TCPListenPort = Integer.parseInt(config.getProperty("Filter.TCPListenPort"));
62		parentFilterName = config.getProperty("Filter.parentFilter");
63		} catch (org.omg.CORBA.MARSHAL e) {
64	<	refman.getLogger().write(toString, Logger.FATAL, "required config property not present");
65	<	throw new RuntimeException ("CRITICAL:Unable to obtain required configuration property" +
66	<	"         Advise you check the i-scream log for more information.");
67	<
64	>	System.err.println ("CRITICAL:Unable to obtain required configuration property" +
65	>	"\n         Advise you check the i-scream log for more information.");
66	>	_logger.write(toString(), Logger.FATAL, "ERROR - required configuration property not present");
67	>	System.exit(1);
68		}
69		}
70	<	refman.getLogger().write(toString, Logger.SYSINIT, "configured");
70	>	_logger.write(toString(), Logger.SYSINIT, "configured");
71	>
72		// get parent
73	<	Filter parentFilter = FilterHelper.narrow(refman.getCORBARef("iscream.Filter." + parentFilterName));
73	>	Filter parentFilter = FilterHelper.narrow(_refman.getCORBARef("iscream.Filter." + parentFilterName));
74
75	<
75	>	// setup a queue
76	>	Queue queue = new Queue();
77
78	+	// Start a filter thread
79	+	_logger.write(toString(), Logger.SYSINIT, "starting Filter Thread / Queue consumer");
80	+	FilterThread filterThread = new FilterThread(queue, parentFilter);
81	+	filterThread.start();
82	+
83		// FilterServant start (for inbound child filter data)
84	<	refman.getLogger().write(toString, Logger.DEBUG, "starting Filter Child -> Parent link for upstream parent - " + parentFilterName);
85	<	FilterServant filterServant = new FilterServant(parentFilter, TCPListenPort, UDPListenPort);
86	<	refman.bindToOrb(filterServant, "iscream.Filter." + refman.getName());
84	>	_logger.write(toString(), Logger.DEBUG, "starting Filter Child -> Parent link for upstream parent - " + parentFilterName);
85	>	FilterServant filterServant = new FilterServant(TCPListenPort, UDPListenPort, queue);
86	>	_refman.bindToOrb(filterServant, "iscream.Filter." + FilterMain.NAME);
87
88		// UDL Reader start (for inbound host data)
89	<	refman.getLogger().write(toString, Logger.SYSINIT, "starting Filter UDP listener");
90	<	UDPReader udpReader = new UDPReader(UDPListenPort, parentFilter);
89	>	_logger.write(toString(), Logger.SYSINIT, "starting Filter UDP listener");
90	>	UDPReader udpReader = new UDPReader(UDPListenPort, queue);
91		udpReader.start();
92
93		// TCP Reader start (for heartbeats)
94	<	refman.getLogger().write(toString, Logger.SYSINIT, "starting Filter TCP listener");
95	<	TCPReader tcpReader = new TCPReader(TCPListenPort, parentFilter);
94	>	_logger.write(toString(), Logger.SYSINIT, "starting Filter TCP listener");
95	>	TCPReader tcpReader = new TCPReader(TCPListenPort, queue);
96		tcpReader.start();
97
98	<	// start the POA off
95	<	// now we are running, we just need to serve
96	<	// so we ask the orb to block for us until it has finished
97	<	refman.activatePOA();
98	<	refman.getLogger().write(toString, Logger.SYSINIT, "started");
99	<	refman.getORB().run();
98	>	_logger.write(toString(), Logger.SYSINIT, "started");
99		}
100
101	<	/**
102	<	* A simple method to print the usage of this class.
103	<	* It never returns, but instead exits to the system
104	<	* with a value 1, to indicate the system did not start
105	<	* properly.
101	>	/**
102	>	* Overrides the {@link java.lang.Object#toString() Object.toString()}
103	>	* method to provide clean logging (every class should have this).
104	>	*
105	>	* This uses the uk.ac.ukc.iscream.util.NameFormat class
106	>	* to format the toString()
107	>	*
108	>	* @return the name of this class and its CVS revision
109		*/
110	<	public static void usage() {
111	<	System.out.println("USAGE: java FilterMain <name>");
112	<	System.out.println("WHERE <name>:");
113	<	System.out.println("      The unique identifier for the Filter in the system.");
114	<	System.exit(1);
110	>	public String toString() {
111	>	return FormatName.getName(
112	>	NAME,
113	>	getClass().getName(),
114	>	REVISION);
115		}
116
115	–	//---CONSTRUCTORS---
116	–
117	–	//---PUBLIC METHODS---
118	–
117		//---PRIVATE METHODS---
118
119		//---ACCESSOR/MUTATOR METHODS---
120
121		//---ATTRIBUTES---
122
123	+	/**
124	+	* This holds a reference to the
125	+	* system logger that is being used.
126	+	*/
127	+	private Logger _logger = ReferenceManager.getInstance().getLogger();
128	+
129	+	/**
130	+	* A reference to the reference manager in use
131	+	*/
132	+	private ReferenceManager _refman = ReferenceManager.getInstance();
133	+
134		//---STATIC ATTRIBUTES---
135	+
136	+	/**
137	+	* The friendly name for this component, used by
138	+	* all related classes.
139	+	* This is set from the configuration.
140	+	*/
141	+	public static String NAME;
142
143		}

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