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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 1.12 by ajm, Wed Nov 29 21:27:39 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.util.*;
6		import uk.ac.ukc.iscream.core.*;
7		import uk.ac.ukc.iscream.filter.*;
7	–	import org.omg.CORBA.*;
8	–	import org.omg.CosNaming.*;
9	–	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 25 | Line 24 | class FilterMain {
24
25		//---STATIC METHODS---
26
27	<	public static void main(String[] args) {
28	<	System.setProperty("org.omg.CORBA.ORBClass","jacorb.orb.ORB");
29	<	System.setProperty("org.omg.CORBA.ORBSingletonClass","jacorb.orb.ORBSingleton");
30	<
31	<	// get our name from the command line
32	<	String ourName = "";
33	<	if (args.length == 1) {
34	<	ourName = args[0];
35	<	}
36	<	else {
38	<	usage();
39	<	}
40	<
41	<	// can't have a real toString() :)
42	<	String toString = "Filter{" + ourName + "}(" + REVISION.substring(11, REVISION.length() - 2) + ")";
43	<
44	<	try {
45	<	ORB orb = ORB.init(args, null);
46	<
47	<	// something to hold objects
48	<	org.omg.CORBA.Object objRef = null;
49	<
50	<	// get the Root POA
51	<	objRef = orb.resolve_initial_references("RootPOA");
52	<	POA poa = POAHelper.narrow(objRef);
53	<
54	<	// get a hook to the name service
55	<	objRef = orb.resolve_initial_references("NameService");
56	<	NamingContextExt ncRef = NamingContextExtHelper.narrow(objRef);
57	<
58	<	// get a ref to the ConfigurationManager, Logger & the FilterManager
59	<
60	<	objRef = ncRef.resolve(ncRef.to_name("iscream.ConfigurationManager"));
61	<	ConfigurationManager configManager = ConfigurationManagerHelper.narrow(objRef);
62	<
63	<	objRef = ncRef.resolve(ncRef.to_name("iscream.Logger"));
64	<	Logger logger = LoggerHelper.narrow(objRef);
65	<
66	<	logger.write(toString, Logger.SYSINIT, "coming up");
67	<
68	<
69	<	// **** THIS SECTION WILL NEED CHANGING TO GET RELEVANT CONFIG
70	<	// **** Please ignore this block of code, it's just "copy/paste" :)
71	<
72	<	// get the config
73	<	Configuration myConfig = configManager.getConfiguration(ourName);
74	<
75	<	// read some config here
76	<	int UDPport = 0;
77	<	int TCPport = 0;
78	<	String parentFilterName = null;
79	<
80	<	// did we?
81	<	if (myConfig == null) {
82	<	System.out.println("Failed: is it there?, can you read it?");
83	<	System.exit(1);
84	<	} else {
85	<
86	<	// get the property
87	<	try {
88	<	//QUERY HERE.... ???
89	<	UDPport = new Integer(myConfig.getProperty("Filter.UDPlistenPort")).intValue();
90	<	TCPport = new Integer(myConfig.getProperty("Filter.TCPlistenPort")).intValue();
91	<	parentFilterName = myConfig.getProperty("Filter.parentFilter");
92	<	} catch (org.omg.CORBA.MARSHAL e) {
93	<	System.out.println("Caught org.omg.CORBA.MARSHAL, must be a null we got back");
94	<	//System.exit(1);
95	<	}
96	<	}
97	<
98	<	logger.write(toString, Logger.SYSINIT, "configured");
99	<
100	<	// **** END COMMENT
101	<
102	<	// **** INITIAL FILTER MANAGER COMMUNICATIONS HERE
103	<
104	<	// get a root (CHANGE to use FilterManager)
105	<	objRef = ncRef.resolve(ncRef.to_name("iscream.Filter." + parentFilterName));
106	<	Filter parentFilter = FilterHelper.narrow(objRef);
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	<	// SETUP our Servant
109	<
110	<	// create the FilterServant
111	<	logger.write(toString, Logger.DEBUG, "firing servant with parent - " + parentFilterName);
112	<	FilterServant filterServant = new FilterServant(logger, parentFilter, ourName, new Integer(TCPport).toString() , new Integer(UDPport).toString());
38	>	//---PUBLIC METHODS---
39
40	<	// register ourselves
41	<
42	<	// and advertise it to the naming context
43	<	objRef = poa.servant_to_reference(filterServant);
44	<	ncRef.bind(ncRef.to_name("iscream.Filter."+ourName), objRef);
45	<
120	<	// **** END COMMENT
40	>	/**
41	>	* Starts the Filter component
42	>	*/
43	>	public void start() throws ComponentStartException {
44	>
45	>	_logger.write(toString(), Logger.SYSINIT, "coming up");
46
47	<	// END SETUP
48	<
47	>	// configuration variables we require
48	>	int UDPListenPort = 0;
49	>	int TCPListenPort = 0;
50	>	String parentFilterName = null;
51
52	<	/**************************************************************
53	<	Here would be an ideal place to start another thread to do
54	<	the listening part of the Filter. Ideally it should just be
55	<	created and then run(). It may be necessary to pass some of
56	<	the following parameters into the thread by the constructor.
57	<
58	<	Logger logger
59	<	- a reference to a Logger object
60	<	FilterManager filterManager
61	<	- a reference to the system filter manager
62	<	ConfigurationManager configManager
63	<	- a reference to the system configuration manager
64	<	Configuration myConfig
65	<	- a reference to the configuration object for this
66	<	filter instance
67	<	String ourName
68	<	- our "identifier" name
69	<
70	<	**************************************************************/
71	<
72	<	logger.write(toString, Logger.SYSINIT, "starting Filter UDP listener");
73	<	UDPReader udpReader = new UDPReader(UDPport, parentFilter, logger);
74	<	udpReader.start();
75	<	logger.write(toString, Logger.SYSINIT, "Filter UDP listener started");
52	>	Configuration config = _refman.getCM().getConfiguration(FilterMain.NAME);
53	>	if (config == null) {
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	>	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	>	_logger.write(toString(), Logger.SYSINIT, "configured");
71	>
72	>	// get parent
73	>	Filter parentFilter = FilterHelper.narrow(_refman.getCORBARef("iscream.Filter." + parentFilterName));
74	>
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	>	_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	<	logger.write(toString, Logger.SYSINIT, "starting Filter TCP listener");
89	<	TCPReader tcpReader = new TCPReader(logger, configManager, TCPport, parentFilter);
90	<	tcpReader.start();
91	<	logger.write(toString, Logger.SYSINIT, "Filter TCP listener started");
88	>	// UDL Reader start (for inbound host data)
89	>	_logger.write(toString(), Logger.SYSINIT, "starting Filter UDP listener");
90	>	UDPReader udpReader = new UDPReader(UDPListenPort, queue);
91	>	udpReader.start();
92
93	<	// TEST
94	<	//parentFilter.receiveXML("<?xml version=\"1.0\" encoding=\"ISO8859-1\"?><packet><test>This is just a debugging test, we ("+ourName+") are live on UDPport: "+UDPport+"</test></packet>");
95	<
96	<	// start the POA off
97	<	poa.the_POAManager().activate();
98	<
161	<	logger.write(toString, Logger.SYSINIT, "started");
162	<
163	<	// now we are running, we just need to serve
164	<	// so we ask the orb to block for us until it has finished
165	<	orb.run();
166	<
167	<	} catch (Exception e) {
168	<	System.err.println("FILTER ERROR: " + e);
169	<	e.printStackTrace(System.out);
170	<	}
93	>	// TCP Reader start (for heartbeats)
94	>	_logger.write(toString(), Logger.SYSINIT, "starting Filter TCP listener");
95	>	TCPReader tcpReader = new TCPReader(TCPListenPort, queue);
96	>	tcpReader.start();
97	>
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
186	–	//---CONSTRUCTORS---
187	–
188	–	//---PUBLIC METHODS---
189	–
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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