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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 1.7 by tdb, Thu Nov 23 01:46:17 2000 UTC vs.
Revision 1.25 by tdb, Tue Mar 13 02:19:47 2001 UTC

#	Line 1 | Line 1
1		//---PACKAGE DECLARATION---
2	+	package uk.ac.ukc.iscream.filtermanager;
3
4		//---IMPORTS---
5		import uk.ac.ukc.iscream.core.*;
6		import uk.ac.ukc.iscream.filter.*;
7	<	import java.net.Socket;
8	<	import java.io.InputStream;
9	<	import java.io.OutputStream;
9	<	import java.io.IOException;
7	>	import uk.ac.ukc.iscream.util.*;
8	>	import uk.ac.ukc.iscream.componentmanager.*;
9	>	import java.net.*;
10		import java.io.*;
11	<	import org.omg.CORBA.*;
12	<	import org.omg.CosNaming.*;
11	>	import java.util.*;
12
13		/**
14	<	* <ONE LINE DESCRIPTION>
15	<	* <DETAILED DESCRIPTION>
14	>	* Handles setting up a host.
15	>	* This class provides a host with appropriate configuration
16	>	* and a reference to a Filter to which it should pass data.
17		*
18		* @author  $Author$
19		* @version $Id$
#	Line 31 | Line 31 | class HostInit extends Thread {
31
32		//---CONSTRUCTORS---
33
34	<	public HostInit(Socket socket, ConfigurationManager configManager, Logger logRef, NamingContextExt ncRef) throws IOException {
35	<	_configManager = configManager;
36	<	_logRef = logRef;
34	>	/**
35	>	* Construct a new HostInit.
36	>	*
37	>	* @param socket The socket to which the host is connected
38	>	*/
39	>	public HostInit(Socket socket) throws IOException {
40	>	// set the Thread name
41	>	setName("filtermanager.HostInit");
42	>
43		_socket = socket;
44	<	_ncRef = ncRef;
44	>	// setup reader & writer
45		_socketIn = new BufferedReader(new InputStreamReader(_socket.getInputStream()));
46	<	_socketOut = new PrintWriter(_socket.getOutputStream());
47	<	_logRef.write(toString(), Logger.SYSINIT, "created");
46	>	_socketOut = new PrintWriter(_socket.getOutputStream(), true);
47	>	_logger.write(toString(), Logger.SYSINIT, "created");
48		}
49
50		//---PUBLIC METHODS---
51
52	+	/**
53	+	* Main method in this class, which handles communicating with
54	+	* the host to determine it's setup.
55	+	*/
56		public void run() {
57		try {
58		String inBound = _socketIn.readLine();
59		if (!inBound.equals("STARTCONFIG")) {
60		_socketOut.println("ERROR");
51	–	_socketOut.flush();
61		throw new IOException("protocol error - expected:STARTCONFIG got:" + inBound);
62		}
63
64	<	Configuration myConfig = _configManager.getConfiguration(_socket.getInetAddress().getHostName().toLowerCase());
64	>	Configuration myConfig = _configManager.getConfiguration("Host." + _socket.getInetAddress().getHostName().toLowerCase());
65		if (myConfig == null) {
66		_socketOut.println("ERROR");
67		throw new IOException("error in host configuration");
68		} else {
69		_socketOut.println("OK");
61	–	_socketOut.flush();
70
71		// get lastmodified
72		inBound = _socketIn.readLine();
73		if(!inBound.equals("LASTMODIFIED")) {
74		// protocol error
75		_socketOut.println("ERROR");
68	–	_socketOut.flush();
76		throw new IOException("protocol error - expected:LASTMODIFIED got:" + inBound);
77		}
78		else {
79		// send info
80		_socketOut.println(myConfig.getLastModified());
74	–	_socketOut.flush();
81		}
82
83		// get config fileList
#	Line 79 | Line 85 | class HostInit extends Thread {
85		if(!inBound.equals("FILELIST")) {
86		// protocol error
87		_socketOut.println("ERROR");
82	–	_socketOut.flush();
88		throw new IOException("protocol error - expected:FILELIST got:" + inBound);
89		}
90		else {
91		// send info
92		_socketOut.println(myConfig.getFileList());
88	–	_socketOut.flush();
93		}
94	<
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(inBound);
113	>	String returnedProperty = myConfig.getProperty("Host."+inBound);
114
115		_socketOut.println(returnedProperty);
100	–	_socketOut.flush();
116
117		} catch (org.omg.CORBA.MARSHAL e) {
118		_socketOut.println("ERROR");
104	–	_socketOut.flush();
119		}
120		inBound = _socketIn.readLine();
121		}
122	<	_logRef.write(toString(), Logger.SYSMSG, "configured host");
122	>	_logger.write(toString(), Logger.SYSMSG, "configured host");
123		_socketOut.println("OK");
110	–	_socketOut.flush();
124
125		// get filter reference
126		inBound = _socketIn.readLine();
127		if(!inBound.equals("FILTER")) {
128		// protocol error
129		_socketOut.println("ERROR");
117	–	_socketOut.flush();
130		throw new IOException("protocol error - expected:FILTER got:" + inBound);
131		}
132		else {
133		// send info
134	<	String parentFilter =  myConfig.getProperty("Host.filter");
135	<	_logRef.write(toString(), Logger.DEBUG, " looking for parent - " + parentFilter);
136	<	org.omg.CORBA.Object objRef = _ncRef.resolve(_ncRef.to_name("iscream.Filter." + parentFilter));
137	<	Filter filter = FilterHelper.narrow(objRef);
138	<	_socketOut.println(filter.getHostName() + ";"
139	<	+ filter.getUDPPort() + ";"
140	<	+ filter.getTCPPort());
141	<	_socketOut.flush();
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
#	Line 134 | Line 165 | class HostInit extends Thread {
165		if(!inBound.equals("END")) {
166		// protocol error
167		_socketOut.println("ERROR");
137	–	_socketOut.flush();
168		throw new IOException("protocol error - expected:END got:" + inBound);
169		}
170		else {
171		// send ok
172		_socketOut.println("OK");
143	–	_socketOut.flush();
173		}
174
175		}
176
177		} catch (Exception e) {
178	<	_logRef.write(toString(), Logger.ERROR, "ERROR: " + e.getMessage());
178	>	_logger.write(toString(), Logger.ERROR, "ERROR - " + e);
179		}
180
181		_socketOut.flush();
#	Line 156 | Line 185 | class HostInit extends Thread {
185		_socketOut.close();
186		_socket.close();
187		} catch (IOException e) {
188	<	_logRef.write(toString(), Logger.ERROR, "exception on socket close");
188	>	_logger.write(toString(), Logger.ERROR, "exception on socket close");
189		}
190	<	_logRef.write(toString(), Logger.SYSMSG, "finished");
190	>	_logger.write(toString(), Logger.SYSMSG, "finished");
191		}
192
193		/**
194		* Overrides the {@link java.lang.Object#toString() Object.toString()}
195		* method to provide clean logging (every class should have this).
196		*
197	+	* This uses the uk.ac.ukc.iscream.util.NameFormat class
198	+	* to format the toString()
199	+	*
200		* @return the name of this class and its CVS revision
201		*/
202		public String toString() {
203	<	return this.getClass().getName() + "{" + _socket.getInetAddress().getHostName()
204	<	+ "}(" + REVISION.substring(11, REVISION.length() - 2) + ")";
205	<
203	>	return FormatName.getName(
204	>	_name,
205	>	getClass().getName(),
206	>	REVISION);
207		}
208
209		//---PRIVATE METHODS---
#	Line 179 | Line 212 | class HostInit extends Thread {
212
213		//---ATTRIBUTES---
214
215	<	ConfigurationManager _configManager;
216	<	Logger _logRef;
217	<	Socket _socket;
218	<	BufferedReader _socketIn;
219	<	PrintWriter _socketOut;
220	<	NamingContextExt _ncRef;
215	>	/**
216	>	* This holds a reference to the
217	>	* system logger that is being used.
218	>	*/
219	>	private Logger _logger = ReferenceManager.getInstance().getLogger();
220	>
221	>	/**
222	>	* A reference to the Configuration Manager the system is using
223	>	*/
224	>	private ConfigurationManager _configManager = ReferenceManager.getInstance().getCM();
225	>
226	>	/**
227	>	* This is the friendly identifier of the
228	>	* component this class is running in.
229	>	* eg, a Filter may be called "filter1",
230	>	* If this class does not have an owning
231	>	* component,  a name from the configuration
232	>	* can be placed here.  This name could also
233	>	* be changed to null for utility classes.
234	>	*/
235	>	private String _name = FilterManager.NAME;
236	>
237	>	/**
238	>	* The socket this class uses
239	>	*/
240	>	private Socket _socket;
241	>
242	>	/**
243	>	* Used for the input stream of this socket
244	>	*/
245	>	private BufferedReader _socketIn;
246	>
247	>	/**
248	>	* Used for the output stream of this socket
249	>	*/
250	>	private PrintWriter _socketOut;
251	>
252		//---STATIC ATTRIBUTES---
253
254		}

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