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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 1.19 by tdb, Thu Jan 18 23:17:58 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.componentmanager.*;
8		import uk.ac.ukc.iscream.filter.*;
8	–	import org.omg.CORBA.*;
9	–	import org.omg.CosNaming.*;
10	–	import org.omg.PortableServer.*;
9
10		/**
11		* A Filter Startup Class
12	+	* A filter is an iscream component.
13		*
14		* @author  $Author$
15		* @version $Id$
16		*/
17	<	class FilterMain {
17	>	public class FilterMain implements Component {
18
19		//---FINAL ATTRIBUTES---
20
#	Line 26 | Line 25 | class FilterMain {
25
26		//---STATIC METHODS---
27
28	<	public static void main(String[] args) {
29	<	// ***************************************
30	<	// VERY TEMPORARY - will find a better way
31	<	System.setProperty("org.omg.CORBA.ORBClass","jacorb.orb.ORB");
32	<	System.setProperty("org.omg.CORBA.ORBSingletonClass","jacorb.orb.ORBSingleton");
33	<	// ***************************************
28	>	//---CONSTRUCTORS---
29	>
30	>	/**
31	>	* Constructs a Filter with the name given
32	>	*
33	>	* @param givenName the name
34	>	*/
35	>	public FilterMain(String givenName) {
36	>	NAME = givenName;
37	>	}
38
39	<	// get our name from the command line
40	<	String ourName = "";
41	<	if (args.length == 1) {
42	<	ourName = args[0];
43	<	}
44	<	else {
45	<	usage();
46	<	}
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");
39	>	//---PUBLIC METHODS---
40	>
41	>	/**
42	>	* Starts the Filter component
43	>	*/
44	>	public void start() throws ComponentStartException {
45	>
46	>	_logger.write(toString(), Logger.SYSINIT, "coming up");
47
48		// configuration variables we require
49		int UDPListenPort = 0;
50		int TCPListenPort = 0;
51		String parentFilterName = null;
52
53	<	Configuration config = refman.getCM().getConfiguration(refman.getName());
53	>	Configuration config = _refman.getCM().getConfiguration(FilterMain.NAME);
54		if (config == null) {
55	<	throw new RuntimeException ("CRITICAL:Unable to obtain configuration" +
56	<	"         Advise you check the i-scream log for more information.");
55	>	System.err.println("CRITICAL:Unable to obtain configuration" +
56	>	"\n         Advise you check the i-scream log for more information.");
57	>	_logger.write(toString(), Logger.FATAL, "ERROR - unable to obtain configuration");
58	>	System.exit(1);
59		} else {
60		try {
61		UDPListenPort = Integer.parseInt(config.getProperty("Filter.UDPListenPort"));
62		TCPListenPort = Integer.parseInt(config.getProperty("Filter.TCPListenPort"));
63		parentFilterName = config.getProperty("Filter.parentFilter");
64		} catch (org.omg.CORBA.MARSHAL e) {
65	<	refman.getLogger().write(toString, Logger.FATAL, "required config property not present");
66	<	throw new RuntimeException ("CRITICAL:Unable to obtain required configuration property" +
67	<	"         Advise you check the i-scream log for more information.");
68	<
65	>	System.err.println ("CRITICAL:Unable to obtain required configuration property" +
66	>	"\n         Advise you check the i-scream log for more information.");
67	>	_logger.write(toString(), Logger.FATAL, "ERROR - required configuration property not present");
68	>	System.exit(1);
69		}
70		}
71	<	refman.getLogger().write(toString, Logger.SYSINIT, "configured");
71	>	_logger.write(toString(), Logger.SYSINIT, "configured");
72	>
73		// get parent
74	<	Filter parentFilter = FilterHelper.narrow(refman.getCORBARef("iscream.Filter." + parentFilterName));
74	>	Filter parentFilter = FilterHelper.narrow(_refman.getCORBARef("iscream.Filter." + parentFilterName));
75
76	<
76	>	// setup a queue
77	>	Queue queue = new Queue();
78
79	+	// Start a filter thread
80	+	_logger.write(toString(), Logger.SYSINIT, "starting Filter Thread / Queue consumer");
81	+	FilterThread filterThread = new FilterThread(queue, parentFilter);
82	+	filterThread.start();
83	+
84		// FilterServant start (for inbound child filter data)
85	<	refman.getLogger().write(toString, Logger.DEBUG, "starting Filter Child -> Parent link for upstream parent - " + parentFilterName);
86	<	FilterServant filterServant = new FilterServant(parentFilter, TCPListenPort, UDPListenPort);
87	<	refman.bindToOrb(filterServant, "iscream.Filter." + refman.getName());
85	>	_logger.write(toString(), Logger.DEBUG, "starting Filter Child -> Parent link for upstream parent - " + parentFilterName);
86	>	FilterServant filterServant = new FilterServant(TCPListenPort, UDPListenPort, queue);
87	>	_refman.bindToOrb(filterServant, "iscream.Filter." + FilterMain.NAME);
88
89		// UDL Reader start (for inbound host data)
90	<	refman.getLogger().write(toString, Logger.SYSINIT, "starting Filter UDP listener");
91	<	UDPReader udpReader = new UDPReader(UDPListenPort, parentFilter);
90	>	_logger.write(toString(), Logger.SYSINIT, "starting Filter UDP listener");
91	>	UDPReader udpReader = new UDPReader(UDPListenPort, queue);
92		udpReader.start();
93
94		// TCP Reader start (for heartbeats)
95	<	refman.getLogger().write(toString, Logger.SYSINIT, "starting Filter TCP listener");
96	<	TCPReader tcpReader = new TCPReader(TCPListenPort, parentFilter);
95	>	_logger.write(toString(), Logger.SYSINIT, "starting Filter TCP listener");
96	>	TCPReader tcpReader = new TCPReader(TCPListenPort, queue);
97		tcpReader.start();
98
99	<	// 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();
99	>	_logger.write(toString(), Logger.SYSINIT, "started");
100		}
101
102	<	/**
103	<	* A simple method to print the usage of this class.
104	<	* It never returns, but instead exits to the system
105	<	* with a value 1, to indicate the system did not start
106	<	* properly.
102	>	/**
103	>	* Overrides the {@link java.lang.Object#toString() Object.toString()}
104	>	* method to provide clean logging (every class should have this).
105	>	*
106	>	* This uses the uk.ac.ukc.iscream.util.NameFormat class
107	>	* to format the toString()
108	>	*
109	>	* @return the name of this class and its CVS revision
110		*/
111	<	public static void usage() {
112	<	System.out.println("USAGE: java FilterMain <name>");
113	<	System.out.println("WHERE <name>:");
114	<	System.out.println("      The unique identifier for the Filter in the system.");
115	<	System.exit(1);
111	>	public String toString() {
112	>	return FormatName.getName(
113	>	NAME,
114	>	getClass().getName(),
115	>	REVISION);
116		}
117
115	–	//---CONSTRUCTORS---
116	–
117	–	//---PUBLIC METHODS---
118	–
118		//---PRIVATE METHODS---
119
120		//---ACCESSOR/MUTATOR METHODS---
121
122		//---ATTRIBUTES---
123
124	+	/**
125	+	* This holds a reference to the
126	+	* system logger that is being used.
127	+	*/
128	+	private Logger _logger = ReferenceManager.getInstance().getLogger();
129	+
130	+	/**
131	+	* A reference to the reference manager in use
132	+	*/
133	+	private ReferenceManager _refman = ReferenceManager.getInstance();
134	+
135		//---STATIC ATTRIBUTES---
136	+
137	+	/**
138	+	* The friendly name for this component, used by
139	+	* all related classes.
140	+	* This is set from the configuration.
141	+	*/
142	+	public static String NAME;
143
144		}

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