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root/i-scream/projects/cms/source/server/uk/org/iscream/cms/server/filtermanager/HostInit.java

Comparing projects/cms/source/server/uk/org/iscream/cms/server/filtermanager/HostInit.java (file contents):
Revision 1.25 by tdb, Tue Mar 13 02:19:47 2001 UTC vs.
Revision 1.31 by tdb, Mon May 20 11:38:14 2002 UTC

#	Line 1 | Line 1
1	+	/*
2	+	* i-scream central monitoring system
3	+	* Copyright (C) 2000-2002 i-scream
4	+	*
5	+	* This program is free software; you can redistribute it and/or
6	+	* modify it under the terms of the GNU General Public License
7	+	* as published by the Free Software Foundation; either version 2
8	+	* of the License, or (at your option) any later version.
9	+	*
10	+	* This program is distributed in the hope that it will be useful,
11	+	* but WITHOUT ANY WARRANTY; without even the implied warranty of
12	+	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
13	+	* GNU General Public License for more details.
14	+	*
15	+	* You should have received a copy of the GNU General Public License
16	+	* along with this program; if not, write to the Free Software
17	+	* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
18	+	*/
19	+
20		//---PACKAGE DECLARATION---
21	<	package uk.ac.ukc.iscream.filtermanager;
21	>	package uk.org.iscream.cms.server.filtermanager;
22
23		//---IMPORTS---
24	<	import uk.ac.ukc.iscream.core.*;
25	<	import uk.ac.ukc.iscream.filter.*;
26	<	import uk.ac.ukc.iscream.util.*;
27	<	import uk.ac.ukc.iscream.componentmanager.*;
24	>	import uk.org.iscream.cms.server.core.*;
25	>	import uk.org.iscream.cms.server.filter.*;
26	>	import uk.org.iscream.cms.server.util.*;
27	>	import uk.org.iscream.cms.server.componentmanager.*;
28		import java.net.*;
29		import java.io.*;
30		import java.util.*;
#	Line 54 | Line 73 | class HostInit extends Thread {
73		* the host to determine it's setup.
74		*/
75		public void run() {
76	+	// get a hook on the config proxy
77	+	ConfigurationProxy cp = ConfigurationProxy.getInstance();
78	+	// this is our config name
79	+	String configName = "Host." + _socket.getInetAddress().getHostName().toLowerCase();
80		try {
81	<	String inBound = _socketIn.readLine();
82	<	if (!inBound.equals("STARTCONFIG")) {
83	<	_socketOut.println("ERROR");
84	<	throw new IOException("protocol error - expected:STARTCONFIG got:" + inBound);
85	<	}
86	<
87	<	Configuration myConfig = _configManager.getConfiguration("Host." + _socket.getInetAddress().getHostName().toLowerCase());
88	<	if (myConfig == null) {
89	<	_socketOut.println("ERROR");
90	<	throw new IOException("error in host configuration");
91	<	} else {
92	<	_socketOut.println("OK");
93	<
94	<	// get lastmodified
95	<	inBound = _socketIn.readLine();
96	<	if(!inBound.equals("LASTMODIFIED")) {
97	<	// protocol error
81	>	// try for STARTCONFIG
82	>	getInBound("STARTCONFIG");
83	>	_socketOut.println("OK");
84	>
85	>	// try for LASTMODIFIED
86	>	getInBound("LASTMODIFIED");
87	>	_socketOut.println(cp.getLastModified(configName));
88	>
89	>	// try for FILELIST
90	>	getInBound("FILELIST");
91	>	_socketOut.println(cp.getFileList(configName));
92	>
93	>	// try for FQDN
94	>	getInBound("FQDN");
95	>	_socketOut.println(_socket.getInetAddress().getHostName().toLowerCase());
96	>
97	>	// get properties
98	>	String reqProperty = getInBound();
99	>	while(!reqProperty.equals("ENDCONFIG")) {
100	>	// get the property
101	>	try {
102	>	String returnedProperty = cp.getProperty(configName, "Host."+reqProperty);
103	>	_socketOut.println(returnedProperty);
104	>	} catch (PropertyNotFoundException e) {
105		_socketOut.println("ERROR");
76	–	throw new IOException("protocol error - expected:LASTMODIFIED got:" + inBound);
106		}
107	<	else {
108	<	// send info
109	<	_socketOut.println(myConfig.getLastModified());
107	>	// get the next request
108	>	reqProperty = _socketIn.readLine();
109	>	}
110	>	_logger.write(toString(), Logger.SYSMSG, "configured host");
111	>	_socketOut.println("OK");
112	>
113	>	// get filter reference
114	>	getInBound("FILTER");
115	>	// send info
116	>	String filterList = cp.getProperty(configName, "Host.filter");
117	>	FilterInfo filterInfoRef = null;
118	>	String filter = null;
119	>	StringTokenizer st = new StringTokenizer(filterList, ";");
120	>	while (filterInfoRef==null && st.hasMoreTokens()) {
121	>	filter = st.nextToken();
122	>	_logger.write(toString(), Logger.DEBUG, " looking for filter- " + filter);
123	>	try {
124	>	filterInfoRef = FilterInfoHelper.narrow(ReferenceManager.getInstance().getCORBARef("iscream.FilterInfo." + filter));
125	>	} catch (ComponentCORBAException e) {
126	>	_logger.write(toString(), Logger.DEBUG, " unable to find filter- " + filter);
127		}
82	–
83	–	// get config fileList
84	–	inBound = _socketIn.readLine();
85	–	if(!inBound.equals("FILELIST")) {
86	–	// protocol error
87	–	_socketOut.println("ERROR");
88	–	throw new IOException("protocol error - expected:FILELIST got:" + inBound);
89	–	}
90	–	else {
91	–	// send info
92	–	_socketOut.println(myConfig.getFileList());
93	–	}
94	–
95	–	// send the FQDN to the host
96	–	inBound = _socketIn.readLine();
97	–	if(!inBound.equals("FQDN")) {
98	–	// protocol error
99	–	_socketOut.println("ERROR");
100	–	throw new IOException("protocol error - expected:FQDN got:" + inBound);
101	–	}
102	–	else {
103	–	// send the fqdn (of the host) to the host
104	–	_socketOut.println(_socket.getInetAddress().getHostName().toLowerCase());
105	–	}
106	–
107	–	// get properties
108	–	inBound = _socketIn.readLine();
109	–	while(!inBound.equals("ENDCONFIG")) {
110	–
111	–	// get the property
112	–	try {
113	–	String returnedProperty = myConfig.getProperty("Host."+inBound);
114	–
115	–	_socketOut.println(returnedProperty);
116	–
117	–	} catch (org.omg.CORBA.MARSHAL e) {
118	–	_socketOut.println("ERROR");
119	–	}
120	–	inBound = _socketIn.readLine();
121	–	}
122	–	_logger.write(toString(), Logger.SYSMSG, "configured host");
123	–	_socketOut.println("OK");
124	–
125	–	// get filter reference
126	–	inBound = _socketIn.readLine();
127	–	if(!inBound.equals("FILTER")) {
128	–	// protocol error
129	–	_socketOut.println("ERROR");
130	–	throw new IOException("protocol error - expected:FILTER got:" + inBound);
131	–	}
132	–	else {
133	–	// send info
134	–	String filterList = myConfig.getProperty("Host.filter");
135	–	Filter filterRef = null;
136	–	String filter = null;
137	–	StringTokenizer st = new StringTokenizer(filterList, ";");
138	–	while (filterRef==null && st.hasMoreTokens()) {
139	–	filter = st.nextToken();
140	–	_logger.write(toString(), Logger.DEBUG, " looking for filter- " + filter);
141	–	try {
142	–	filterRef = FilterHelper.narrow(ReferenceManager.getInstance().getCORBARef("iscream.Filter." + filter));
143	–	} catch (ComponentCORBAException e) {
144	–	_logger.write(toString(), Logger.DEBUG, " unable to find filter- " + filter);
145	–	}
146	–	}
147	–
148	–	// hopefully we found a filter
149	–	if(filterRef != null) {
150	–	_logger.write(toString(), Logger.DEBUG, " found filter- " + filter);
151	–	// tell the host about it...
152	–	_socketOut.println(filterRef.getHostName() + ";"
153	–	+ filterRef.getUDPPort() + ";"
154	–	+ filterRef.getTCPPort());
155	–	}
156	–	else {
157	–	// ...or throw a wobbly (and tell the host!)
158	–	_socketOut.println("ERROR");
159	–	throw new IOException("unable to find filter for host");
160	–	}
161	–	}
162	–
163	–	// confirm that all is ok
164	–	inBound = _socketIn.readLine();
165	–	if(!inBound.equals("END")) {
166	–	// protocol error
167	–	_socketOut.println("ERROR");
168	–	throw new IOException("protocol error - expected:END got:" + inBound);
169	–	}
170	–	else {
171	–	// send ok
172	–	_socketOut.println("OK");
173	–	}
174	–
128		}
129	+
130	+	// hopefully we found a filter
131	+	if(filterInfoRef != null) {
132	+	_logger.write(toString(), Logger.DEBUG, " found filter- " + filter);
133	+	try {
134	+	// tell the host about it...
135	+	_socketOut.println(filterInfoRef.getHostName() + ";"
136	+	+ filterInfoRef.getUDPPort() + ";"
137	+	+ filterInfoRef.getTCPPort());
138	+	}
139	+	catch(org.omg.CORBA.COMM_FAILURE e) {
140	+	// failed to talk to filter, lets signal an error
141	+	_socketOut.println("ERROR");
142	+	throw new IOException("error communicating with filter - " + e);
143	+	}
144	+	}
145	+	else {
146	+	// ...or throw a wobbly (and tell the host!)
147	+	_socketOut.println("ERROR");
148	+	throw new IOException("unable to find filter for host");
149	+	}
150
151	+	// confirm ok with END
152	+	getInBound("END");
153	+	_socketOut.println("OK");
154	+
155		} catch (Exception e) {
156		_logger.write(toString(), Logger.ERROR, "ERROR - " + e);
157		}
158
181	–	_socketOut.flush();
159		// Disconnect streams & socket
160		try {
161		_socketIn.close();
#	Line 194 | Line 171 | class HostInit extends Thread {
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.cms.server.util.NameFormat class
175		* to format the toString()
176		*
177		* @return the name of this class and its CVS revision
#	Line 207 | Line 184 | class HostInit extends Thread {
184		}
185
186		//---PRIVATE METHODS---
187	+
188	+	private String getInBound(String expected) throws IOException {
189	+	// grab the input
190	+	String inBound = getInBound();
191	+	// check if it's what we're expecting
192	+	if(!inBound.equals(expected)) {
193	+	throw new IOException("protocol error - expected:"+expected+" got:" + inBound);
194	+	}
195	+	// it should be ok then
196	+	return inBound;
197	+	}
198	+
199	+	private String getInBound() throws IOException {
200	+	// grab the input
201	+	String inBound = _socketIn.readLine();
202	+	// check for null's, likely disconnection
203	+	if(inBound == null) {
204	+	throw new IOException("got null from host, maybe it died");
205	+	}
206	+	// it's a valid message it seems
207	+	return inBound;
208	+	}
209
210		//---ACCESSOR/MUTATOR METHODS---
211

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