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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 1.15 by tdb, Sun Jan 28 05:38:13 2001 UTC vs.
Revision 1.33 by tdb, Fri Sep 6 15:10:48 2002 UTC

#	Line 1 | Line 1
1	+	/*
2	+	* i-scream central monitoring system
3	+	* http://www.i-scream.org.uk
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.filtermanager;
22	>	package uk.org.iscream.cms.server.filtermanager;
23
24		//---IMPORTS---
25	<	import uk.ac.ukc.iscream.core.*;
26	<	import uk.ac.ukc.iscream.filter.*;
27	<	import uk.ac.ukc.iscream.util.*;
28	<	import uk.ac.ukc.iscream.componentmanager.*;
29	<	import java.net.Socket;
25	>	import uk.org.iscream.cms.server.core.*;
26	>	import uk.org.iscream.cms.server.filter.*;
27	>	import uk.org.iscream.cms.server.util.*;
28	>	import uk.org.iscream.cms.server.componentmanager.*;
29	>	import java.net.*;
30		import java.io.*;
31	+	import java.util.*;
32
33		/**
34		* Handles setting up a host.
#	Line 36 | Line 57 | class HostInit extends Thread {
57		* @param socket The socket to which the host is connected
58		*/
59		public HostInit(Socket socket) throws IOException {
60	+	// set the Thread name
61	+	setName("filtermanager.HostInit");
62	+
63		_socket = socket;
64		// setup reader & writer
65		_socketIn = new BufferedReader(new InputStreamReader(_socket.getInputStream()));
66	<	_socketOut = new PrintWriter(_socket.getOutputStream());
66	>	_socketOut = new PrintWriter(_socket.getOutputStream(), true);
67		_logger.write(toString(), Logger.SYSINIT, "created");
68		}
69
#	Line 50 | Line 74 | class HostInit extends Thread {
74		* the host to determine it's setup.
75		*/
76		public void run() {
77	+	// get a hook on the config proxy
78	+	ConfigurationProxy cp = ConfigurationProxy.getInstance();
79	+	// this is our config name
80	+	String configName = "Host." + _socket.getInetAddress().getHostName().toLowerCase();
81		try {
82	<	String inBound = _socketIn.readLine();
83	<	if (!inBound.equals("STARTCONFIG")) {
84	<	_socketOut.println("ERROR");
85	<	_socketOut.flush();
86	<	throw new IOException("protocol error - expected:STARTCONFIG got:" + inBound);
87	<	}
88	<
89	<	Configuration myConfig = _configManager.getConfiguration("Host." + _socket.getInetAddress().getHostName().toLowerCase());
90	<	if (myConfig == null) {
91	<	_socketOut.println("ERROR");
92	<	throw new IOException("error in host configuration");
93	<	} else {
94	<	_socketOut.println("OK");
95	<	_socketOut.flush();
96	<
97	<	// get lastmodified
98	<	inBound = _socketIn.readLine();
99	<	if(!inBound.equals("LASTMODIFIED")) {
100	<	// protocol error
82	>	// try for STARTCONFIG
83	>	getInBound("STARTCONFIG");
84	>	_socketOut.println("OK");
85	>
86	>	// try for LASTMODIFIED
87	>	getInBound("LASTMODIFIED");
88	>	_socketOut.println(cp.getLastModified(configName));
89	>
90	>	// try for FILELIST
91	>	getInBound("FILELIST");
92	>	_socketOut.println(cp.getFileList(configName));
93	>
94	>	// try for FQDN
95	>	getInBound("FQDN");
96	>	_socketOut.println(_socket.getInetAddress().getHostName().toLowerCase());
97	>
98	>	// get properties
99	>	String reqProperty = getInBound();
100	>	while(!reqProperty.equals("ENDCONFIG")) {
101	>	// get the property
102	>	try {
103	>	String returnedProperty = cp.getProperty(configName, "Host."+reqProperty);
104	>	_socketOut.println(returnedProperty);
105	>	} catch (PropertyNotFoundException e) {
106		_socketOut.println("ERROR");
74	–	_socketOut.flush();
75	–	throw new IOException("protocol error - expected:LASTMODIFIED got:" + inBound);
107		}
108	<	else {
109	<	// send info
110	<	_socketOut.println(myConfig.getLastModified());
111	<	_socketOut.flush();
108	>	// get the next request
109	>	reqProperty = _socketIn.readLine();
110	>	}
111	>	_logger.write(toString(), Logger.SYSMSG, "configured host");
112	>	_socketOut.println("OK");
113	>
114	>	// get filter reference
115	>	getInBound("FILTER");
116	>	// send info
117	>	String filterList = cp.getProperty(configName, "Host.filter");
118	>	FilterInfo filterInfoRef = null;
119	>	String filter = null;
120	>	StringTokenizer st = new StringTokenizer(filterList, ";");
121	>	while (filterInfoRef==null && st.hasMoreTokens()) {
122	>	filter = st.nextToken();
123	>	_logger.write(toString(), Logger.DEBUG, " looking for filter- " + filter);
124	>	try {
125	>	filterInfoRef = FilterInfoHelper.narrow(ReferenceManager.getInstance().getCORBARef("iscream.FilterInfo\\." + filter));
126	>	} catch (ComponentCORBAException e) {
127	>	_logger.write(toString(), Logger.DEBUG, " unable to find filter- " + filter);
128		}
82	–
83	–	// get config fileList
84	–	inBound = _socketIn.readLine();
85	–	if(!inBound.equals("FILELIST")) {
86	–	// protocol error
87	–	_socketOut.println("ERROR");
88	–	_socketOut.flush();
89	–	throw new IOException("protocol error - expected:FILELIST got:" + inBound);
90	–	}
91	–	else {
92	–	// send info
93	–	_socketOut.println(myConfig.getFileList());
94	–	_socketOut.flush();
95	–	}
96	–
97	–	// get properties
98	–	inBound = _socketIn.readLine();
99	–	while(!inBound.equals("ENDCONFIG")) {
100	–
101	–	// get the property
102	–	try {
103	–	String returnedProperty = myConfig.getProperty("Host."+inBound);
104	–
105	–	_socketOut.println(returnedProperty);
106	–	_socketOut.flush();
107	–
108	–	} catch (org.omg.CORBA.MARSHAL e) {
109	–	_socketOut.println("ERROR");
110	–	_socketOut.flush();
111	–	}
112	–	inBound = _socketIn.readLine();
113	–	}
114	–	_logger.write(toString(), Logger.SYSMSG, "configured host");
115	–	_socketOut.println("OK");
116	–	_socketOut.flush();
117	–
118	–	// get filter reference
119	–	inBound = _socketIn.readLine();
120	–	if(!inBound.equals("FILTER")) {
121	–	// protocol error
122	–	_socketOut.println("ERROR");
123	–	_socketOut.flush();
124	–	throw new IOException("protocol error - expected:FILTER got:" + inBound);
125	–	}
126	–	else {
127	–	// send info
128	–	String parentFilter =  myConfig.getProperty("Host.filter");
129	–	_logger.write(toString(), Logger.DEBUG, " looking for parent - " + parentFilter);
130	–	Filter filter = FilterHelper.narrow(ReferenceManager.getInstance().getCORBARef("iscream.Filter." + parentFilter));
131	–	_socketOut.println(filter.getHostName() + ";"
132	–	+ filter.getUDPPort() + ";"
133	–	+ filter.getTCPPort());
134	–	_socketOut.flush();
135	–	}
136	–
137	–	// confirm that all is ok
138	–	inBound = _socketIn.readLine();
139	–	if(!inBound.equals("END")) {
140	–	// protocol error
141	–	_socketOut.println("ERROR");
142	–	_socketOut.flush();
143	–	throw new IOException("protocol error - expected:END got:" + inBound);
144	–	}
145	–	else {
146	–	// send ok
147	–	_socketOut.println("OK");
148	–	_socketOut.flush();
149	–	}
150	–
129		}
130	+
131	+	// hopefully we found a filter
132	+	if(filterInfoRef != null) {
133	+	_logger.write(toString(), Logger.DEBUG, " found filter- " + filter);
134	+	try {
135	+	// tell the host about it...
136	+	_socketOut.println(filterInfoRef.getHostName() + ";"
137	+	+ filterInfoRef.getUDPPort() + ";"
138	+	+ filterInfoRef.getTCPPort());
139	+	}
140	+	catch(org.omg.CORBA.COMM_FAILURE e) {
141	+	// failed to talk to filter, lets signal an error
142	+	_socketOut.println("ERROR");
143	+	throw new IOException("error communicating with filter - " + e);
144	+	}
145	+	}
146	+	else {
147	+	// ...or throw a wobbly (and tell the host!)
148	+	_socketOut.println("ERROR");
149	+	throw new IOException("unable to find filter for host");
150	+	}
151
152	+	// confirm ok with END
153	+	getInBound("END");
154	+	_socketOut.println("OK");
155	+
156		} catch (Exception e) {
157	<	_logger.write(toString(), Logger.ERROR, "ERROR - " + e.getMessage());
157	>	_logger.write(toString(), Logger.ERROR, "ERROR - " + e);
158		}
159
157	–	_socketOut.flush();
160		// Disconnect streams & socket
161		try {
162		_socketIn.close();
#	Line 170 | Line 172 | class HostInit extends Thread {
172		* Overrides the {@link java.lang.Object#toString() Object.toString()}
173		* method to provide clean logging (every class should have this).
174		*
175	<	* This uses the uk.ac.ukc.iscream.util.NameFormat class
175	>	* This uses the uk.org.iscream.cms.server.util.NameFormat class
176		* to format the toString()
177		*
178		* @return the name of this class and its CVS revision
#	Line 183 | Line 185 | class HostInit extends Thread {
185		}
186
187		//---PRIVATE METHODS---
188	+
189	+	private String getInBound(String expected) throws IOException {
190	+	// grab the input
191	+	String inBound = getInBound();
192	+	// check if it's what we're expecting
193	+	if(!inBound.equals(expected)) {
194	+	throw new IOException("protocol error - expected:"+expected+" got:" + inBound);
195	+	}
196	+	// it should be ok then
197	+	return inBound;
198	+	}
199	+
200	+	private String getInBound() throws IOException {
201	+	// grab the input
202	+	String inBound = _socketIn.readLine();
203	+	// check for null's, likely disconnection
204	+	if(inBound == null) {
205	+	throw new IOException("got null from host, maybe it died");
206	+	}
207	+	// it's a valid message it seems
208	+	return inBound;
209	+	}
210
211		//---ACCESSOR/MUTATOR METHODS---
212

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