ViewVC Help

View File | Revision Log | Show Annotations | Revision Graph | Root Listing

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 1.24 by ajm, Fri Feb 23 17:11:09 2001 UTC vs.
Revision 1.40 by tdb, Sun Aug 1 10:40:58 2004 UTC

#	Line 1 | Line 1
1	+	/*
2	+	* i-scream central monitoring system
3	+	* http://www.i-scream.org
4	+	* Copyright (C) 2000-2002 i-scream
5	+	*
6	+	* This program is free software; you can redistribute it and/or
7	+	* modify it under the terms of the GNU General Public License
8	+	* as published by the Free Software Foundation; either version 2
9	+	* of the License, or (at your option) any later version.
10	+	*
11	+	* This program is distributed in the hope that it will be useful,
12	+	* but WITHOUT ANY WARRANTY; without even the implied warranty of
13	+	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
14	+	* GNU General Public License for more details.
15	+	*
16	+	* You should have received a copy of the GNU General Public License
17	+	* along with this program; if not, write to the Free Software
18	+	* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
19	+	*/
20	+
21		//---PACKAGE DECLARATION---
22	<	package uk.ac.ukc.iscream.filter;
22	>	package uk.org.iscream.cms.server.filter;
23
24		//---IMPORTS---
25	<	import uk.ac.ukc.iscream.util.*;
26	<	import uk.ac.ukc.iscream.core.*;
27	<	import uk.ac.ukc.iscream.componentmanager.*;
28	<	import uk.ac.ukc.iscream.filter.*;
25	>	import uk.org.iscream.cms.util.*;
26	>	import uk.org.iscream.cms.server.core.*;
27	>	import uk.org.iscream.cms.server.componentmanager.*;
28	>	import uk.org.iscream.cms.server.filter.*;
29
30		/**
31		* A Filter Startup Class
#	Line 43 | Line 63 | public class FilterMain implements Component {
63		*/
64		public void start() throws ComponentStartException {
65		// get references to key objects
66	<	_refman = ReferenceManager.getInstance();
47	<	_logger = ReferenceManager.getInstance().getLogger();
66	>	_logger = _refman.getLogger();
67
68		_logger.write(toString(), Logger.SYSINIT, "coming up");
50	–
51	–	// configuration variables we require
52	–	int UDPListenPort = 0;
53	–	int TCPListenPort = 0;
54	–	String parentFilterName = null;
55	–	int queueMonitorInterval = 0;
69
70	<	Configuration config = _refman.getCM().getConfiguration(FilterMain.NAME);
71	<	if (config == null) {
72	<	throw new ComponentStartException("Unable to obtain configuration for component");
70	>	ConfigurationProxy cp = ConfigurationProxy.getInstance();
71	>
72	>	// which input methods do we need to activate?
73	>	// default to activating them
74	>	boolean activateUDPReader = true;
75	>	boolean activateCORBAReader = true;
76	>
77	>	// check for UDP Reader
78	>	try {
79	>	int udp = Integer.parseInt(cp.getProperty("Filter." + FilterMain.NAME, "Filter.ActivateUDPReader"));
80	>	activateUDPReader = (udp == 1);
81	>	} catch (PropertyNotFoundException e) {
82	>	activateUDPReader = false;
83	>	} catch (NumberFormatException e) {
84	>	activateUDPReader = false;
85		}
86	<	else {
86	>	// check for CORBA Reader
87	>	try {
88	>	int corba = Integer.parseInt(cp.getProperty("Filter." + FilterMain.NAME, "Filter.ActivateCORBAReader"));
89	>	activateCORBAReader = (corba == 1);
90	>	} catch (PropertyNotFoundException e) {
91	>	activateCORBAReader = false;
92	>	} catch (NumberFormatException e) {
93	>	activateCORBAReader = false;
94	>	}
95	>
96	>	// need to use the Queue later on
97	>	Queue queue;
98	>
99	>	// there's little point starting a Queue and a FilterThread
100	>	// if nothing is going to be giving us any data
101	>	if(activateUDPReader || activateCORBAReader) {
102	>	// see if this Queue needs a size limit
103		try {
104	<	// get the configuration properties we need
105	<	UDPListenPort = Integer.parseInt(config.getProperty("Filter.UDPListenPort"));
106	<	TCPListenPort = Integer.parseInt(config.getProperty("Filter.TCPListenPort"));
107	<	parentFilterName = config.getProperty("Filter.parentFilter");
108	<	queueMonitorInterval = Integer.parseInt(config.getProperty("Queue.MonitorInterval"));
109	<	} catch (org.omg.CORBA.MARSHAL e) {
110	<	throw new ComponentStartException("Unable to obtain requried configuration property for component");
104	>	int queueSizeLimit = Integer.parseInt(cp.getProperty("Filter." + FilterMain.NAME, "Queue.SizeLimit"));
105	>	String queueRemoveAlgorithm = cp.getProperty("Filter." + FilterMain.NAME, "Queue.RemoveAlgorithm");
106	>	int algorithm = StringUtils.getStringPos(queueRemoveAlgorithm, Queue.algorithms);
107	>	if(algorithm != -1) {
108	>	_logger.write(toString(), Logger.DEBUG, "Starting Queue with size limit of "+queueSizeLimit+", using remove algorithm "+queueRemoveAlgorithm);
109	>	// we have valid values, so lets start it.
110	>	queue = new Queue(queueSizeLimit, algorithm);
111	>	}
112	>	else {
113	>	_logger.write(toString(), Logger.WARNING, "Bad Queue Algorithm configuration, not known: "+queueRemoveAlgorithm);
114	>	// just don't activate a limit
115	>	queue = new Queue();
116	>	}
117	>
118	>	} catch (PropertyNotFoundException e) {
119	>	_logger.write(toString(), Logger.DEBUG, "Optional config not set: "+e);
120	>	// just don't activate a limit
121	>	queue = new Queue();
122	>	} catch (NumberFormatException e) {
123	>	_logger.write(toString(), Logger.WARNING, "Bad Queue SizeLimit configuration: "+e);
124	>	// just don't activate a limit
125	>	queue = new Queue();
126		}
127	+
128	+	// startup a monitor on this queue
129	+	try {
130	+	// try to get the interval, if this fails, we won't start up the monitor
131	+	int queueMonitorInterval = Integer.parseInt(cp.getProperty("Filter." + FilterMain.NAME, "Queue.MonitorInterval"));
132	+	String queueName = NAME + " Filter";
133	+	queue.startMonitor(queueMonitorInterval*1000, queueName);
134	+	} catch (PropertyNotFoundException e) {
135	+	_logger.write(toString(), Logger.WARNING, "failed to find queue monitor config, disabling. " + e);
136	+	}
137	+
138	+	// Start a filter thread
139	+	_logger.write(toString(), Logger.SYSINIT, "starting Filter Thread / Queue consumer");
140	+	FilterThread filterThread = new FilterThread(queue);
141	+	filterThread.start();
142		}
143	+	else {
144	+	// it's pointless carrying on really...
145	+	throw new ComponentStartException("Can't start Filter without any inbound data feeds");
146	+	}
147
148	<	_logger.write(toString(), Logger.SYSINIT, "configured");
148	>	// the corba listener needs these to be set, so lets
149	>	// make them something obviously invalid initially
150	>	int UDPListenPort = -1;
151
152	<	// get parent
153	<	Filter parentFilter = FilterHelper.narrow(_refman.getCORBARef("iscream.Filter." + parentFilterName));
152	>	// UDP Reader start (for inbound host data)
153	>	if(activateUDPReader) {
154	>	try {
155	>	// get the port number from the configuration
156	>	UDPListenPort = Integer.parseInt(cp.getProperty("Filter." + FilterMain.NAME, "Filter.UDPListenPort"));
157	>	// start the UDPReader
158	>	_logger.write(toString(), Logger.SYSINIT, "starting Filter UDP listener");
159	>	UDPReader udpReader = new UDPReader(UDPListenPort, queue);
160	>	udpReader.start();
161	>	} catch (PropertyNotFoundException e) {
162	>	_logger.write(toString(), Logger.WARNING, "Unable to start UDPReader due to missing configuration: " + e);
163	>	} catch (NumberFormatException e) {
164	>	_logger.write(toString(), Logger.WARNING, "Unable to start UDPReader due to invalid configuration: " + e);
165	>	}
166	>	}
167
78	–	// setup a queue
79	–	Queue queue = new Queue();
80	–	// startup a monitor on this queue, every minute
81	–	String queueName = NAME + " Filter";
82	–	queue.startMonitor(queueMonitorInterval*1000, queueName);
83	–
84	–	// Start a filter thread
85	–	_logger.write(toString(), Logger.SYSINIT, "starting Filter Thread / Queue consumer");
86	–	FilterThread filterThread = new FilterThread(queue, parentFilter);
87	–	filterThread.start();
88	–
168		// FilterServant start (for inbound child filter data)
169	<	_logger.write(toString(), Logger.DEBUG, "starting Filter Child -> Parent link for upstream parent - " + parentFilterName);
170	<	FilterServant filterServant = new FilterServant(TCPListenPort, UDPListenPort, queue);
171	<	_refman.bindToOrb(filterServant, "iscream.Filter." + FilterMain.NAME);
172	<
173	<	// UDL Reader start (for inbound host data)
174	<	_logger.write(toString(), Logger.SYSINIT, "starting Filter UDP listener");
96	<	UDPReader udpReader = new UDPReader(UDPListenPort, queue);
97	<	udpReader.start();
98	<
99	<	// TCP Reader start (for heartbeats)
100	<	_logger.write(toString(), Logger.SYSINIT, "starting Filter TCP listener");
101	<	TCPReader tcpReader = new TCPReader(TCPListenPort, queue);
102	<	tcpReader.start();
169	>	if(activateCORBAReader) {
170	>	// start the FilterServant
171	>	_logger.write(toString(), Logger.SYSINIT, "starting Servant to listen for downstream filters");
172	>	FilterServant filterServant = new FilterServant(queue);
173	>	_refman.bindToOrb(filterServant, "iscream.Filter\\." + FilterMain.NAME);
174	>	}
175
176	+	// FilterInfoServant start (to provide filter information to the server)
177	+	_logger.write(toString(), Logger.SYSINIT, "starting Servant to provide filter information");
178	+	FilterInfoServant filterInfoServant = new FilterInfoServant(UDPListenPort);
179	+	_refman.bindToOrb(filterInfoServant, "iscream.FilterInfo\\." + FilterMain.NAME);
180	+
181		_logger.write(toString(), Logger.SYSINIT, "started");
182		}
183	<
183	>
184		/**
185	+	* Does a dependency check. Used mainly at startup to
186	+	* see if the required dependencies (components) are up
187	+	* and running.
188	+	*
189	+	* @return a boolean value, true if the depdencies are satisfied
190	+	*/
191	+	public boolean depCheck() {
192	+	try {
193	+	org.omg.CORBA.Object obj;
194	+	// first check the ConfigurationManager is alive
195	+	obj = _refman.getCORBARef("iscream.ConfigurationManager");
196	+	// then suss out our parent filter
197	+	ConfigurationProxy cp = ConfigurationProxy.getInstance();
198	+	String parentFilterName = cp.getProperty("Filter." + FilterMain.NAME, "Filter.parentFilter");
199	+	// finally check the parent filter is alive
200	+	obj = _refman.getCORBARef("iscream.Filter\\." + parentFilterName);
201	+	} catch(ComponentCORBAException e) {
202	+	System.err.println(toString() + ": Dependency Failure: "+e);
203	+	return false;
204	+	} catch(PropertyNotFoundException e) {
205	+	System.err.println(toString() + ": Unable to obtain configuration: "+e);
206	+	return false;
207	+	}
208	+	// dependency check suceeded
209	+	return true;
210	+	}
211	+
212	+	/**
213		* Overrides the {@link java.lang.Object#toString() Object.toString()}
214		* method to provide clean logging (every class should have this).
215		*
216	<	* This uses the uk.ac.ukc.iscream.util.NameFormat class
216	>	* This uses the uk.org.iscream.cms.util.NameFormat class
217		* to format the toString()
218		*
219		* @return the name of this class and its CVS revision
#	Line 135 | Line 240 | public class FilterMain implements Component {
240		/**
241		* A reference to the reference manager in use
242		*/
243	<	private ReferenceManager _refman;
243	>	private ReferenceManager _refman = ReferenceManager.getInstance();
244
245		//---STATIC ATTRIBUTES---
246

Diff Legend

–	Removed lines
+	Added lines
<	Changed lines
>	Changed lines