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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 1.15 by ajm, Thu Nov 30 03:05:47 2000 UTC vs.
Revision 1.23 by tdb, Wed Feb 21 19:11:30 2001 UTC

#	Line 4 | Line 4 | package uk.ac.ukc.iscream.filter;
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.filter.*;
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 23 | 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	<	}
41	<
42	<	// can't have a real toString() :)
43	<	String toString = "Filter{" + ourName + "}(" + REVISION.substring(11, REVISION.length() - 2) + ")";
44	<
45	<	ReferenceManager refman = ReferenceManager.init(null, ourName);
46	<
47	<	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());
52	>	int queueMonitorInterval = 0;
53	>
54	>	Configuration config = _refman.getCM().getConfiguration(FilterMain.NAME);
55		if (config == null) {
56	<	throw new RuntimeException ("CRITICAL:Unable to obtain configuration" +
57	<	"         Advise you check the i-scream log for more information.");
58	<	} else {
56	>	throw new ComponentStartException("Unable to obtain configuration for component");
57	>	}
58	>	else {
59		try {
60	+	// get the configuration properties we need
61		UDPListenPort = Integer.parseInt(config.getProperty("Filter.UDPListenPort"));
62		TCPListenPort = Integer.parseInt(config.getProperty("Filter.TCPListenPort"));
63		parentFilterName = config.getProperty("Filter.parentFilter");
64	+	queueMonitorInterval = Integer.parseInt(config.getProperty("Queue.MonitorInterval"));
65		} catch (org.omg.CORBA.MARSHAL e) {
66	<	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	<
66	>	throw new ComponentStartException("Unable to obtain requried configuration property for component");
67		}
68		}
69	<	refman.getLogger().write(toString, Logger.SYSINIT, "configured");
69	>
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	>	// startup a monitor on this queue, every minute
78	>	String queueName = NAME + " Filter";
79	>	queue.startMonitor(queueMonitorInterval*1000, queueName);
80
81	+	// Start a filter thread
82	+	_logger.write(toString(), Logger.SYSINIT, "starting Filter Thread / Queue consumer");
83	+	FilterThread filterThread = new FilterThread(queue, parentFilter);
84	+	filterThread.start();
85	+
86		// FilterServant start (for inbound child filter data)
87	<	refman.getLogger().write(toString, Logger.DEBUG, "starting Filter Child -> Parent link for upstream parent - " + parentFilterName);
88	<	FilterServant filterServant = new FilterServant(parentFilter, TCPListenPort, UDPListenPort);
89	<	refman.bindToOrb(filterServant, "iscream.Filter." + refman.getName());
87	>	_logger.write(toString(), Logger.DEBUG, "starting Filter Child -> Parent link for upstream parent - " + parentFilterName);
88	>	FilterServant filterServant = new FilterServant(TCPListenPort, UDPListenPort, queue);
89	>	_refman.bindToOrb(filterServant, "iscream.Filter." + FilterMain.NAME);
90
91		// UDL Reader start (for inbound host data)
92	<	refman.getLogger().write(toString, Logger.SYSINIT, "starting Filter UDP listener");
93	<	UDPReader udpReader = new UDPReader(UDPListenPort, parentFilter);
92	>	_logger.write(toString(), Logger.SYSINIT, "starting Filter UDP listener");
93	>	UDPReader udpReader = new UDPReader(UDPListenPort, queue);
94		udpReader.start();
95
96		// TCP Reader start (for heartbeats)
97	<	refman.getLogger().write(toString, Logger.SYSINIT, "starting Filter TCP listener");
98	<	TCPReader tcpReader = new TCPReader(TCPListenPort, parentFilter);
97	>	_logger.write(toString(), Logger.SYSINIT, "starting Filter TCP listener");
98	>	TCPReader tcpReader = new TCPReader(TCPListenPort, queue);
99		tcpReader.start();
100
101	<	// start the POA off
92	<	// now we are running, we just need to serve
93	<	// so we ask the orb to block for us until it has finished
94	<	refman.activatePOA();
95	<	refman.getLogger().write(toString, Logger.SYSINIT, "started");
96	<	refman.getORB().run();
101	>	_logger.write(toString(), Logger.SYSINIT, "started");
102		}
103
104	<	/**
105	<	* A simple method to print the usage of this class.
106	<	* It never returns, but instead exits to the system
107	<	* with a value 1, to indicate the system did not start
108	<	* properly.
104	>	/**
105	>	* Overrides the {@link java.lang.Object#toString() Object.toString()}
106	>	* method to provide clean logging (every class should have this).
107	>	*
108	>	* This uses the uk.ac.ukc.iscream.util.NameFormat class
109	>	* to format the toString()
110	>	*
111	>	* @return the name of this class and its CVS revision
112		*/
113	<	public static void usage() {
114	<	System.out.println("USAGE: java FilterMain <name>");
115	<	System.out.println("WHERE <name>:");
116	<	System.out.println("      The unique identifier for the Filter in the system.");
117	<	System.exit(1);
113	>	public String toString() {
114	>	return FormatName.getName(
115	>	NAME,
116	>	getClass().getName(),
117	>	REVISION);
118		}
119
112	–	//---CONSTRUCTORS---
113	–
114	–	//---PUBLIC METHODS---
115	–
120		//---PRIVATE METHODS---
121
122		//---ACCESSOR/MUTATOR METHODS---
123
124		//---ATTRIBUTES---
125
126	+	/**
127	+	* This holds a reference to the
128	+	* system logger that is being used.
129	+	*/
130	+	private Logger _logger = ReferenceManager.getInstance().getLogger();
131	+
132	+	/**
133	+	* A reference to the reference manager in use
134	+	*/
135	+	private ReferenceManager _refman = ReferenceManager.getInstance();
136	+
137		//---STATIC ATTRIBUTES---
138
139	<	}
139	>	/**
140	>	* The friendly name for this component, used by
141	>	* all related classes.
142	>	* This is set from the configuration.
143	>	*/
144	>	public static String NAME;
145	>
146	>	}

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