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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 1.9 by tdb, Wed Nov 29 19:19:12 2000 UTC vs.
Revision 1.24 by tdb, Mon Mar 5 23:53:39 2001 UTC

#	Line 4 | Line 4 | package uk.ac.ukc.iscream.filtermanager;
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;
10	<	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.*;
13	<	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 32 | 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		_socket = socket;
41	<	_ncRef = ncRef;
41	>	// setup reader & writer
42		_socketIn = new BufferedReader(new InputStreamReader(_socket.getInputStream()));
43	<	_socketOut = new PrintWriter(_socket.getOutputStream());
44	<	_logRef.write(toString(), Logger.SYSINIT, "created");
43	>	_socketOut = new PrintWriter(_socket.getOutputStream(), true);
44	>	_logger.write(toString(), Logger.SYSINIT, "created");
45		}
46
47		//---PUBLIC METHODS---
48
49	+	/**
50	+	* Main method in this class, which handles communicating with
51	+	* the host to determine it's setup.
52	+	*/
53		public void run() {
54		try {
55		String inBound = _socketIn.readLine();
56		if (!inBound.equals("STARTCONFIG")) {
57		_socketOut.println("ERROR");
52	–	_socketOut.flush();
58		throw new IOException("protocol error - expected:STARTCONFIG got:" + inBound);
59		}
60
#	Line 59 | Line 64 | class HostInit extends Thread {
64		throw new IOException("error in host configuration");
65		} else {
66		_socketOut.println("OK");
62	–	_socketOut.flush();
67
68		// get lastmodified
69		inBound = _socketIn.readLine();
70		if(!inBound.equals("LASTMODIFIED")) {
71		// protocol error
72		_socketOut.println("ERROR");
69	–	_socketOut.flush();
73		throw new IOException("protocol error - expected:LASTMODIFIED got:" + inBound);
74		}
75		else {
76		// send info
77		_socketOut.println(myConfig.getLastModified());
75	–	_socketOut.flush();
78		}
79
80		// get config fileList
#	Line 80 | Line 82 | class HostInit extends Thread {
82		if(!inBound.equals("FILELIST")) {
83		// protocol error
84		_socketOut.println("ERROR");
83	–	_socketOut.flush();
85		throw new IOException("protocol error - expected:FILELIST got:" + inBound);
86		}
87		else {
88		// send info
89		_socketOut.println(myConfig.getFileList());
89	–	_socketOut.flush();
90		}
91	<
91	>
92	>	// send the FQDN to the host
93	>	inBound = _socketIn.readLine();
94	>	if(!inBound.equals("FQDN")) {
95	>	// protocol error
96	>	_socketOut.println("ERROR");
97	>	throw new IOException("protocol error - expected:FQDN got:" + inBound);
98	>	}
99	>	else {
100	>	// send the fqdn (of the host) to the host
101	>	_socketOut.println(_socket.getInetAddress().getHostName().toLowerCase());
102	>	}
103	>
104		// get properties
105		inBound = _socketIn.readLine();
106		while(!inBound.equals("ENDCONFIG")) {
107
108		// get the property
109		try {
110	<	String returnedProperty = myConfig.getProperty(inBound);
110	>	String returnedProperty = myConfig.getProperty("Host."+inBound);
111
112		_socketOut.println(returnedProperty);
101	–	_socketOut.flush();
113
114		} catch (org.omg.CORBA.MARSHAL e) {
115		_socketOut.println("ERROR");
105	–	_socketOut.flush();
116		}
117		inBound = _socketIn.readLine();
118		}
119	<	_logRef.write(toString(), Logger.SYSMSG, "configured host");
119	>	_logger.write(toString(), Logger.SYSMSG, "configured host");
120		_socketOut.println("OK");
111	–	_socketOut.flush();
121
122		// get filter reference
123		inBound = _socketIn.readLine();
124		if(!inBound.equals("FILTER")) {
125		// protocol error
126		_socketOut.println("ERROR");
118	–	_socketOut.flush();
127		throw new IOException("protocol error - expected:FILTER got:" + inBound);
128		}
129		else {
130		// send info
131	<	String parentFilter =  myConfig.getProperty("Host.filter");
132	<	_logRef.write(toString(), Logger.DEBUG, " looking for parent - " + parentFilter);
133	<	org.omg.CORBA.Object objRef = _ncRef.resolve(_ncRef.to_name("iscream.Filter." + parentFilter));
134	<	Filter filter = FilterHelper.narrow(objRef);
135	<	_socketOut.println(filter.getHostName() + ";"
136	<	+ filter.getUDPPort() + ";"
137	<	+ filter.getTCPPort());
138	<	_socketOut.flush();
131	>	String filterList = myConfig.getProperty("Host.filter");
132	>	Filter filterRef = null;
133	>	String filter = null;
134	>	StringTokenizer st = new StringTokenizer(filterList, ";");
135	>	while (filterRef==null && st.hasMoreTokens()) {
136	>	filter = st.nextToken();
137	>	_logger.write(toString(), Logger.DEBUG, " looking for filter- " + filter);
138	>	try {
139	>	filterRef = FilterHelper.narrow(ReferenceManager.getInstance().getCORBARef("iscream.Filter." + filter));
140	>	} catch (ComponentCORBAException e) {
141	>	_logger.write(toString(), Logger.DEBUG, " unable to find filter- " + filter);
142	>	}
143	>	}
144	>
145	>	// hopefully we found a filter
146	>	if(filterRef != null) {
147	>	_logger.write(toString(), Logger.DEBUG, " found filter- " + filter);
148	>	// tell the host about it...
149	>	_socketOut.println(filterRef.getHostName() + ";"
150	>	+ filterRef.getUDPPort() + ";"
151	>	+ filterRef.getTCPPort());
152	>	}
153	>	else {
154	>	// ...or throw a wobbly (and tell the host!)
155	>	_socketOut.println("ERROR");
156	>	throw new IOException("unable to find filter for host");
157	>	}
158		}
159
160		// confirm that all is ok
#	Line 135 | Line 162 | class HostInit extends Thread {
162		if(!inBound.equals("END")) {
163		// protocol error
164		_socketOut.println("ERROR");
138	–	_socketOut.flush();
165		throw new IOException("protocol error - expected:END got:" + inBound);
166		}
167		else {
168		// send ok
169		_socketOut.println("OK");
144	–	_socketOut.flush();
170		}
171
172		}
173
174		} catch (Exception e) {
175	<	_logRef.write(toString(), Logger.ERROR, "ERROR: " + e.getMessage());
175	>	_logger.write(toString(), Logger.ERROR, "ERROR - " + e);
176		}
177
178		_socketOut.flush();
#	Line 157 | Line 182 | class HostInit extends Thread {
182		_socketOut.close();
183		_socket.close();
184		} catch (IOException e) {
185	<	_logRef.write(toString(), Logger.ERROR, "exception on socket close");
185	>	_logger.write(toString(), Logger.ERROR, "exception on socket close");
186		}
187	<	_logRef.write(toString(), Logger.SYSMSG, "finished");
187	>	_logger.write(toString(), Logger.SYSMSG, "finished");
188		}
189
190		/**
191		* Overrides the {@link java.lang.Object#toString() Object.toString()}
192		* method to provide clean logging (every class should have this).
193		*
194	+	* This uses the uk.ac.ukc.iscream.util.NameFormat class
195	+	* to format the toString()
196	+	*
197		* @return the name of this class and its CVS revision
198		*/
199		public String toString() {
200	<	return this.getClass().getName() + "{" + _socket.getInetAddress().getHostName()
201	<	+ "}(" + REVISION.substring(11, REVISION.length() - 2) + ")";
202	<
200	>	return FormatName.getName(
201	>	_name,
202	>	getClass().getName(),
203	>	REVISION);
204		}
205
206		//---PRIVATE METHODS---
#	Line 180 | Line 209 | class HostInit extends Thread {
209
210		//---ATTRIBUTES---
211
212	<	ConfigurationManager _configManager;
213	<	Logger _logRef;
214	<	Socket _socket;
215	<	BufferedReader _socketIn;
216	<	PrintWriter _socketOut;
217	<	NamingContextExt _ncRef;
212	>	/**
213	>	* This holds a reference to the
214	>	* system logger that is being used.
215	>	*/
216	>	private Logger _logger = ReferenceManager.getInstance().getLogger();
217	>
218	>	/**
219	>	* A reference to the Configuration Manager the system is using
220	>	*/
221	>	private ConfigurationManager _configManager = ReferenceManager.getInstance().getCM();
222	>
223	>	/**
224	>	* This is the friendly identifier of the
225	>	* component this class is running in.
226	>	* eg, a Filter may be called "filter1",
227	>	* If this class does not have an owning
228	>	* component,  a name from the configuration
229	>	* can be placed here.  This name could also
230	>	* be changed to null for utility classes.
231	>	*/
232	>	private String _name = FilterManager.NAME;
233	>
234	>	/**
235	>	* The socket this class uses
236	>	*/
237	>	private Socket _socket;
238	>
239	>	/**
240	>	* Used for the input stream of this socket
241	>	*/
242	>	private BufferedReader _socketIn;
243	>
244	>	/**
245	>	* Used for the output stream of this socket
246	>	*/
247	>	private PrintWriter _socketOut;
248	>
249		//---STATIC ATTRIBUTES---
250
251		}

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