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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 1.21 by tdb, Fri Jan 19 01:20:15 2001 UTC vs.
Revision 1.33 by tdb, Fri Mar 16 15:16:01 2001 UTC

#	Line 1 | Line 1
1	+
2		//---PACKAGE DECLARATION---
3	<	package uk.ac.ukc.iscream.rootfilter;
3	>	package uk.org.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.*;
6	>	import uk.org.iscream.util.*;
7	>	import uk.org.iscream.core.*;
8	>	import uk.org.iscream.componentmanager.*;
9	>	import uk.org.iscream.clientinterface.*;
10
11		/**
12		* The root filter is what all filters talk to
#	Line 37 | Line 38 | public class RootFilter implements Component {
38		* This starts the Root Filter for the system
39		*/
40		public void start() throws ComponentStartException {
41	<
41	>	// get references to key objects
42	>	_logger = _refman.getLogger();
43	>
44		_logger.write(toString(), Logger.SYSINIT, "coming up");
42	–
43	–	// configuration variables we require
44	–	String ourName = null;
45	–	String realInterface = null;
46	–	String dbInterface = null;
45
46	<	Configuration config = _refman.getCM().getConfiguration("RootFilter");
47	<	if (config == null) {
48	<	System.err.println("CRITICAL:Unable to obtain configuration" +
49	<	"\n         Advise you check the i-scream log for more information.");
50	<	_logger.write(toString(), Logger.FATAL, "ERROR - unable to obtain configuration");
51	<	System.exit(1);
52	<	} else {
53	<	try {
54	<	ourName = config.getProperty("RootFilter.name");
57	<	realInterface = config.getProperty("RootFilter.realtimeInterfaceName");
58	<	dbInterface = config.getProperty("RootFilter.dbInterfaceName");
59	<	} catch (org.omg.CORBA.MARSHAL e) {
60	<	System.err.println ("CRITICAL:Unable to obtain required configuration property" +
61	<	"\n         Advise you check the i-scream log for more information.");
62	<	_logger.write(toString(), Logger.FATAL, "ERROR - required configuration property not present");
63	<	System.exit(1);
64	<	}
46	>	ConfigurationProxy cp = ConfigurationProxy.getInstance();
47	>	String configName = "RootFilter";
48	>
49	>	// set the name of the root filter
50	>	try {
51	>	NAME = cp.getProperty(configName, "RootFilter.name");
52	>	} catch (PropertyNotFoundException e) {
53	>	NAME = null;
54	>	_logger.write(toString(), Logger.WARNING, "RootFilter name not set: "+e);
55		}
66	–	// now we have the name of the Root Filter we set it
67	–	NAME = ourName;
56
57	<	_logger.write(toString(), Logger.SYSINIT, "configured");
57	>	// try and get the names of the ciReal and ciDB
58	>	String realInterface, dbInterface;
59	>	try {
60	>	realInterface = cp.getProperty(configName, "RootFilter.realtimeInterfaceName");
61	>	dbInterface = cp.getProperty(configName, "RootFilter.dbInterfaceName");
62	>	} catch (PropertyNotFoundException e) {
63	>	_logger.write(toString(), Logger.DEBUG, "Optional config not set: "+e);
64	>	realInterface = null;
65	>	dbInterface = null;
66	>	}
67
68		ClientInterface ciReal = null, ciDB = null;
69		// get reference to the client interfaces - the real time one
#	Line 78 | Line 75 | public class RootFilter implements Component {
75		ciDB = ClientInterfaceHelper.narrow(_refman.getCORBARef("iscream.ClientInterface." + dbInterface));
76		}
77
78	<	Queue queue = new Queue();
78	>	// setup a queue
79	>	Queue queue;
80	>	// see if this Queue needs a size limit
81	>	try {
82	>	int queueSizeLimit = Integer.parseInt(cp.getProperty(configName, "Queue.SizeLimit"));
83	>	String queueRemoveAlgorithm = cp.getProperty(configName, "Queue.RemoveAlgorithm");
84	>	int algorithm = StringUtils.getStringPos(queueRemoveAlgorithm, Queue.algorithms);
85	>	if(algorithm != -1) {
86	>	queue = new Queue(queueSizeLimit, algorithm);
87	>	}
88	>	else {
89	>	_logger.write(toString(), Logger.WARNING, "Bad Queue Algorithm configuration, not known: "+queueRemoveAlgorithm);
90	>	// just don't activate a limit
91	>	queue = new Queue();
92	>	}
93	>
94	>	} catch (PropertyNotFoundException e) {
95	>	_logger.write(toString(), Logger.DEBUG, "Optional config not set: "+e);
96	>	// just don't activate a limit
97	>	queue = new Queue();
98	>	} catch (NumberFormatException e) {
99	>	_logger.write(toString(), Logger.WARNING, "Bad Queue SizeLimit configuration: "+e);
100	>	// just don't activate a limit
101	>	queue = new Queue();
102	>	}
103
104	+	// startup a monitor on this queue
105	+	try {
106	+	// try to get the interval, if this fails, we won't start up the monitor
107	+	int queueMonitorInterval = Integer.parseInt(cp.getProperty(configName, "Queue.MonitorInterval"));
108	+	String queueName = NAME + " RootFilter";
109	+	queue.startMonitor(queueMonitorInterval*1000, queueName);
110	+	} catch (PropertyNotFoundException e) {
111	+	_logger.write(toString(), Logger.WARNING, "failed to find queue monitor config, disabling. " + e);
112	+	}
113	+
114		if (realInterface == null) {
115		_logger.write(toString(), Logger.DEBUG, "hooked to interfaces - " + dbInterface);
116		CIWrapper c = new CIWrapper(ciDB, queue);
#	Line 104 | Line 135 | public class RootFilter implements Component {
135
136		_logger.write(toString(), Logger.SYSINIT, "started");
137
138	<	// !!!! TEMPORARY CODE !!!!
139	<	// Monitor the queue's status (queue 0 and 1 - big assumption!)
140	<	while(true) {
141	<	// wait 30 seconds
142	<	try { Thread.sleep(30000); } catch(Exception e) {}
143	<	try {
144	<	int q0 = queue.queueSize(0);
145	<	int q1 = queue.queueSize(1);
146	<	int tot = queue.elementCount();
147	<	String message = "Queue status - queue0: "+q0+" queue1: "+q1+" total: "+tot;
148	<	_logger.write(toString(), Logger.DEBUG, message);
149	<	}
150	<	catch(Exception e) {
151	<	_logger.write(toString(), Logger.ERROR, e.getMessage());
152	<	}
138	>	}
139	>
140	>	/**
141	>	* Does a dependency check. Used mainly at startup to
142	>	* see if the required dependencies (components) are up
143	>	* and running.
144	>	*
145	>	* @return a boolean value, true if the depdencies are satisfied
146	>	*/
147	>	public boolean depCheck() {
148	>	try {
149	>	org.omg.CORBA.Object obj;
150	>	// first check the ConfigurationManager is alive
151	>	obj = _refman.getCORBARef("iscream.ConfigurationManager");
152	>	// then get some info on the CLI and DBI
153	>	ConfigurationProxy cp = ConfigurationProxy.getInstance();
154	>	String cli = cp.getProperty("RootFilter", "RootFilter.realtimeInterfaceName");
155	>	String dbi = cp.getProperty("RootFilter", "RootFilter.dbInterfaceName");
156	>	// finally check the CLI and DBI are alive
157	>	obj = _refman.getCORBARef("iscream.ClientInterface." + cli);
158	>	obj = _refman.getCORBARef("iscream.ClientInterface." + dbi);
159	>	} catch(ComponentCORBAException e) {
160	>	System.err.println(toString() + ": Dependency Failure: "+e);
161	>	return false;
162	>	} catch(PropertyNotFoundException e) {
163	>	System.err.println(toString() + ": Unable to obtain configuration: "+e);
164	>	return false;
165		}
166	+	// dependency check suceeded
167	+	return true;
168		}
169
170		/**
171		* Overrides the {@link java.lang.Object#toString() Object.toString()}
172		* method to provide clean logging (every class should have this).
173		*
174	<	* This uses the uk.ac.ukc.iscream.util.NameFormat class
174	>	* This uses the uk.org.iscream.util.NameFormat class
175		* to format the toString()
176		*
177		* @return the name of this class and its CVS revision
#	Line 148 | Line 193 | public class RootFilter implements Component {
193		* This holds a reference to the
194		* system logger that is being used.
195		*/
196	<	private Logger _logger = ReferenceManager.getInstance().getLogger();
196	>	private Logger _logger;
197
198		/**
199		* A reference to the reference manager in use

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