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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 1.19 by tdb, Wed Feb 28 10:36:05 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.*;
31
32		/**
33		* Handles setting up a host.
#	Line 36 | Line 56 | class HostInit extends Thread {
56		* @param socket The socket to which the host is connected
57		*/
58		public HostInit(Socket socket) throws IOException {
59	+	// set the Thread name
60	+	setName("filtermanager.HostInit");
61	+
62		_socket = socket;
63		// setup reader & writer
64		_socketIn = new BufferedReader(new InputStreamReader(_socket.getInputStream()));
#	Line 50 | 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");
72	–	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		}
78	–
79	–	// get config fileList
80	–	inBound = _socketIn.readLine();
81	–	if(!inBound.equals("FILELIST")) {
82	–	// protocol error
83	–	_socketOut.println("ERROR");
84	–	throw new IOException("protocol error - expected:FILELIST got:" + inBound);
85	–	}
86	–	else {
87	–	// send info
88	–	_socketOut.println(myConfig.getFileList());
89	–	}
90	–
91	–	// send the FQDN to the host
92	–	inBound = _socketIn.readLine();
93	–	if(!inBound.equals("FQDN")) {
94	–	// protocol error
95	–	_socketOut.println("ERROR");
96	–	throw new IOException("protocol error - expected:FQDN got:" + inBound);
97	–	}
98	–	else {
99	–	try {
100	–	// try to send the fqdn to the host
101	–	_socketOut.println(_socket.getInetAddress().getHostName());
102	–	}
103	–	catch(UnknownHostException e) {
104	–	// we failed for some reason
105	–	_socketOut.println("ERROR");
106	–	}
107	–	}
108	–
109	–	// get properties
110	–	inBound = _socketIn.readLine();
111	–	while(!inBound.equals("ENDCONFIG")) {
112	–
113	–	// get the property
114	–	try {
115	–	String returnedProperty = myConfig.getProperty("Host."+inBound);
116	–
117	–	_socketOut.println(returnedProperty);
118	–
119	–	} catch (org.omg.CORBA.MARSHAL e) {
120	–	_socketOut.println("ERROR");
121	–	}
122	–	inBound = _socketIn.readLine();
123	–	}
124	–	_logger.write(toString(), Logger.SYSMSG, "configured host");
125	–	_socketOut.println("OK");
126	–
127	–	// get filter reference
128	–	inBound = _socketIn.readLine();
129	–	if(!inBound.equals("FILTER")) {
130	–	// protocol error
131	–	_socketOut.println("ERROR");
132	–	throw new IOException("protocol error - expected:FILTER got:" + inBound);
133	–	}
134	–	else {
135	–	// send info
136	–	String parentFilter =  myConfig.getProperty("Host.filter");
137	–	_logger.write(toString(), Logger.DEBUG, " looking for parent - " + parentFilter);
138	–	Filter filter = FilterHelper.narrow(ReferenceManager.getInstance().getCORBARef("iscream.Filter." + parentFilter));
139	–	_socketOut.println(filter.getHostName() + ";"
140	–	+ filter.getUDPPort() + ";"
141	–	+ filter.getTCPPort());
142	–	}
143	–
144	–	// confirm that all is ok
145	–	inBound = _socketIn.readLine();
146	–	if(!inBound.equals("END")) {
147	–	// protocol error
148	–	_socketOut.println("ERROR");
149	–	throw new IOException("protocol error - expected:END got:" + inBound);
150	–	}
151	–	else {
152	–	// send ok
153	–	_socketOut.println("OK");
154	–	}
155	–
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
162	–	_socketOut.flush();
159		// Disconnect streams & socket
160		try {
161		_socketIn.close();
#	Line 175 | 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 188 | 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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