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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 1.12 by ajm, Tue Dec 12 20:59:03 2000 UTC vs.
Revision 1.29 by tdb, Wed Mar 14 01:34:34 2001 UTC

#	Line 1 | Line 1
1	+
2		//---PACKAGE DECLARATION---
3		package uk.ac.ukc.iscream.rootfilter;
4
5		//---IMPORTS---
6		import uk.ac.ukc.iscream.util.*;
7		import uk.ac.ukc.iscream.core.*;
8	+	import uk.ac.ukc.iscream.componentmanager.*;
9		import uk.ac.ukc.iscream.clientinterface.*;
10
11		/**
#	Line 17 | Line 19 | import uk.ac.ukc.iscream.clientinterface.*;
19		* @author  $Author$
20		* @version $Id$
21		*/
22	<	public class RootFilter implements uk.ac.ukc.iscream.util.Component {
22	>	public class RootFilter implements Component {
23
24		//---FINAL ATTRIBUTES---
25
#	Line 36 | Line 38 | public class RootFilter implements uk.ac.ukc.iscream.u
38		* This starts the Root Filter for the system
39		*/
40		public void start() throws ComponentStartException {
41	<
41	>	// get references to key objects
42	>	_refman = ReferenceManager.getInstance();
43	>	_logger = ReferenceManager.getInstance().getLogger();
44	>
45		_logger.write(toString(), Logger.SYSINIT, "coming up");
41	–
42	–	// configuration variables we require
43	–	String ourName = null;
44	–	String realInterface = null;
45	–	String dbInterface = null;
46
47	<	Configuration config = _refman.getCM().getConfiguration("RootFilter");
48	<	if (config == null) {
49	<	System.err.println("CRITICAL:Unable to obtain configuration" +
50	<	"\n         Advise you check the i-scream log for more information.");
51	<	_logger.write(toString(), Logger.FATAL, "ERROR - unable to obtain configuration");
52	<	System.exit(1);
53	<	} else {
54	<	try {
55	<	ourName = config.getProperty("RootFilter.name");
56	<	realInterface = config.getProperty("RootFilter.realtimeInterfaceName");
57	<	dbInterface = config.getProperty("RootFilter.dbInterfaceName");
58	<	} catch (org.omg.CORBA.MARSHAL e) {
59	<	System.err.println ("CRITICAL:Unable to obtain required configuration property" +
60	<	"\n         Advise you check the i-scream log for more information.");
61	<	_logger.write(toString(), Logger.FATAL, "ERROR - required configuration property not present");
62	<	System.exit(1);
63	<	}
47	>	ConfigurationProxy cp = ConfigurationProxy.getInstance();
48	>	String configName = "RootFilter";
49	>
50	>	// set the name of the root filter
51	>	try {
52	>	NAME = cp.getProperty(configName, "RootFilter.name");
53	>	} catch (PropertyNotFoundException e) {
54	>	NAME = null;
55	>	_logger.write(toString(), Logger.WARNING, "RootFilter name not set: "+e);
56		}
65	–	// now we have the name of the Root Filter we set it
66	–	NAME = ourName;
57
58	<	_logger.write(toString(), Logger.SYSINIT, "configured");
59	<
58	>	// try and get the names of the ciReal and ciDB
59	>	String realInterface, dbInterface;
60	>	try {
61	>	realInterface = cp.getProperty(configName, "RootFilter.realtimeInterfaceName");
62	>	dbInterface = cp.getProperty(configName, "RootFilter.dbInterfaceName");
63	>	} catch (PropertyNotFoundException e) {
64	>	_logger.write(toString(), Logger.DEBUG, "Optional config not set: "+e);
65	>	realInterface = null;
66	>	dbInterface = null;
67	>	}
68	>
69	>	ClientInterface ciReal = null, ciDB = null;
70		// get reference to the client interfaces - the real time one
71		if (realInterface != null) {
72	<	ClientInterface ciReal = ClientInterfaceHelper.narrow(_refman.getCORBARef("iscream.ClientInterface." + realInterface));
72	>	ciReal = ClientInterfaceHelper.narrow(_refman.getCORBARef("iscream.ClientInterface." + realInterface));
73		}
74		// get reference to the client interfaces - and the db one
75		if (dbInterface != null) {
76	<	ClientInterface ciDB = ClientInterfaceHelper.narrow(_refman.getCORBARef("iscream.ClientInterface." + dbInterface));
76	>	ciDB = ClientInterfaceHelper.narrow(_refman.getCORBARef("iscream.ClientInterface." + dbInterface));
77		}
78
79	<	ClientInterface[] clientInterfaces;
79	>	// setup a queue
80	>	Queue queue = new Queue();
81	>
82	>	// startup a monitor on this queue
83	>	try {
84	>	// try to get the interval, if this fails, we won't start up the monitor
85	>	int queueMonitorInterval = Integer.parseInt(cp.getProperty(configName, "Queue.MonitorInterval"));
86	>	String queueName = NAME + " RootFilter";
87	>	queue.startMonitor(queueMonitorInterval*1000, queueName);
88	>	} catch (PropertyNotFoundException e) {
89	>	_logger.write(toString(), Logger.WARNING, "failed to find queue monitor config, disabling. " + e);
90	>	}
91	>
92		if (realInterface == null) {
93		_logger.write(toString(), Logger.DEBUG, "hooked to interfaces - " + dbInterface);
94	<	clientInterfaces = {ciDB};
94	>	CIWrapper c = new CIWrapper(ciDB, queue);
95	>	c.start();
96		} else if (dbInterface == null) {
97		_logger.write(toString(), Logger.DEBUG, "hooked to interfaces - " + realInterface);
98	<	clientInterfaces = {ciReal};
98	>	CIWrapper c = new CIWrapper(ciReal, queue);
99	>	c.start();
100		} else {
101		_logger.write(toString(), Logger.DEBUG, "hooked to interfaces - " + realInterface + " & " + dbInterface);
102	<	clientInterfaces = {ciReal, ciDB};
102	>	CIWrapper c = new CIWrapper(ciReal, queue);
103	>	c.start();
104	>	c = new CIWrapper(ciDB, queue);
105	>	c.start();
106		}
107	<
107	>
108		// RootFilterServant start (for inbound child filter data)
109		_logger.write(toString(), Logger.DEBUG, "starting Root Filter");
110	<	RootFilterServant filterServant = new RootFilterServant(clientInterfaces);
110	>	RootFilterServant filterServant = new RootFilterServant(queue);
111		// bind to the naming service as a filter
112	<	_refman.bindToOrb(filterServant, "iscream.Filter." + _name);
112	>	_refman.bindToOrb(filterServant, "iscream.Filter." + RootFilter.NAME);
113
114		_logger.write(toString(), Logger.SYSINIT, "started");
115	+
116		}
117
118		/**
119	+	* Does a dependency check. Used mainly at startup to
120	+	* see if the required dependencies (components) are up
121	+	* and running.
122	+	*
123	+	* @return a boolean value, true if the depdencies are satisfied
124	+	*/
125	+	public boolean depCheck() {
126	+	try {
127	+	org.omg.CORBA.Object obj;
128	+	// first check the ConfigurationManager is alive
129	+	obj = _refman.getCORBARef("iscream.ConfigurationManager");
130	+	// then get some info on the CLI and DBI
131	+	ConfigurationProxy cp = ConfigurationProxy.getInstance();
132	+	String cli = cp.getProperty("RootFilter", "RootFilter.realtimeInterfaceName");
133	+	String dbi = cp.getProperty("RootFilter", "RootFilter.dbInterfaceName");
134	+	// finally check the CLI and DBI are alive
135	+	obj = _refman.getCORBARef("iscream.ClientInterface." + cli);
136	+	obj = _refman.getCORBARef("iscream.ClientInterface." + dbi);
137	+	} catch(ComponentCORBAException e) {
138	+	_logger.write(toString(), Logger.WARNING, "Dependency Failure: "+e);
139	+	return false;
140	+	} catch(PropertyNotFoundException e) {
141	+	_logger.write(toString(), Logger.WARNING, "Unable to obtain configuration: "+e);
142	+	return false;
143	+	}
144	+	// dependency check suceeded
145	+	return true;
146	+	}
147	+
148	+	/**
149		* Overrides the {@link java.lang.Object#toString() Object.toString()}
150		* method to provide clean logging (every class should have this).
151		*
#	Line 108 | Line 156 | public class RootFilter implements uk.ac.ukc.iscream.u
156		*/
157		public String toString() {
158		return FormatName.getName(
159	<	_name,
159	>	NAME,
160		getClass().getName(),
161		REVISION);
162		}
#	Line 120 | Line 168 | public class RootFilter implements uk.ac.ukc.iscream.u
168		//---ATTRIBUTES---
169
170		/**
123	–	* This is the friendly identifier of the
124	–	* component this class is running in.
125	–	* eg, a Filter may be called "filter1",
126	–	* If this class does not have an owning
127	–	* component,  a name from the configuration
128	–	* can be placed here.  This name could also
129	–	* be changed to null for utility classes.
130	–	*/
131	–	private String _name = RootFilter.NAME;
132	–
133	–	/**
171		* This holds a reference to the
172		* system logger that is being used.
173		*/
174	<	private Logger _logger = ReferenceManager.getInstance().getLogger();
174	>	private Logger _logger;
175
176		/**
177		* A reference to the reference manager in use
178		*/
179	<	private ReferenceManager _refman = ReferenceManager.getInstance();
179	>	private ReferenceManager _refman;
180
181		//---STATIC ATTRIBUTES---
182

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