ViewVC Help

View File | Revision Log | Show Annotations | Revision Graph | Root Listing

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 1.11 by tdb, Thu Dec 7 00:02:17 2000 UTC vs.
Revision 1.28 by tdb, Tue May 29 17:02:35 2001 UTC

#	Line 1 | Line 1
1		//---PACKAGE DECLARATION---
2	<	package uk.ac.ukc.iscream.filtermanager;
2	>	package uk.org.iscream.cms.server.filtermanager;
3
4		//---IMPORTS---
5	<	import uk.ac.ukc.iscream.core.*;
6	<	import uk.ac.ukc.iscream.filter.*;
7	<	import uk.ac.ukc.iscream.util.*;
8	<	import java.net.Socket;
5	>	import uk.org.iscream.cms.server.core.*;
6	>	import uk.org.iscream.cms.server.filter.*;
7	>	import uk.org.iscream.cms.server.util.*;
8	>	import uk.org.iscream.cms.server.componentmanager.*;
9	>	import java.net.*;
10		import java.io.*;
11	+	import java.util.*;
12
13		/**
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 27 | Line 31 | class HostInit extends Thread {
31
32		//---CONSTRUCTORS---
33
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	+	// setup reader & writer
45		_socketIn = new BufferedReader(new InputStreamReader(_socket.getInputStream()));
46	<	_socketOut = new PrintWriter(_socket.getOutputStream());
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	+	// get a hook on the config proxy
58	+	ConfigurationProxy cp = ConfigurationProxy.getInstance();
59	+	// this is our config name
60	+	String configName = "Host." + _socket.getInetAddress().getHostName().toLowerCase();
61		try {
62	<	String inBound = _socketIn.readLine();
63	<	if (!inBound.equals("STARTCONFIG")) {
64	<	_socketOut.println("ERROR");
65	<	_socketOut.flush();
66	<	throw new IOException("protocol error - expected:STARTCONFIG got:" + inBound);
67	<	}
68	<
69	<	Configuration myConfig = _configManager.getConfiguration("Host." + _socket.getInetAddress().getHostName().toLowerCase());
70	<	if (myConfig == null) {
71	<	_socketOut.println("ERROR");
72	<	throw new IOException("error in host configuration");
73	<	} else {
74	<	_socketOut.println("OK");
75	<	_socketOut.flush();
76	<
77	<	// get lastmodified
78	<	inBound = _socketIn.readLine();
79	<	if(!inBound.equals("LASTMODIFIED")) {
80	<	// protocol error
62	>	// try for STARTCONFIG
63	>	getInBound("STARTCONFIG");
64	>	_socketOut.println("OK");
65	>
66	>	// try for LASTMODIFIED
67	>	getInBound("LASTMODIFIED");
68	>	_socketOut.println(cp.getLastModified(configName));
69	>
70	>	// try for FILELIST
71	>	getInBound("FILELIST");
72	>	_socketOut.println(cp.getFileList(configName));
73	>
74	>	// try for FQDN
75	>	getInBound("FQDN");
76	>	_socketOut.println(_socket.getInetAddress().getHostName().toLowerCase());
77	>
78	>	// get properties
79	>	String reqProperty = getInBound();
80	>	while(!reqProperty.equals("ENDCONFIG")) {
81	>	// get the property
82	>	try {
83	>	String returnedProperty = cp.getProperty(configName, "Host."+reqProperty);
84	>	_socketOut.println(returnedProperty);
85	>	} catch (PropertyNotFoundException e) {
86		_socketOut.println("ERROR");
61	–	_socketOut.flush();
62	–	throw new IOException("protocol error - expected:LASTMODIFIED got:" + inBound);
87		}
88	<	else {
89	<	// send info
90	<	_socketOut.println(myConfig.getLastModified());
91	<	_socketOut.flush();
88	>	// get the next request
89	>	reqProperty = _socketIn.readLine();
90	>	}
91	>	_logger.write(toString(), Logger.SYSMSG, "configured host");
92	>	_socketOut.println("OK");
93	>
94	>	// get filter reference
95	>	getInBound("FILTER");
96	>	// send info
97	>	String filterList = cp.getProperty(configName, "Host.filter");
98	>	Filter filterRef = null;
99	>	String filter = null;
100	>	StringTokenizer st = new StringTokenizer(filterList, ";");
101	>	while (filterRef==null && st.hasMoreTokens()) {
102	>	filter = st.nextToken();
103	>	_logger.write(toString(), Logger.DEBUG, " looking for filter- " + filter);
104	>	try {
105	>	filterRef = FilterHelper.narrow(ReferenceManager.getInstance().getCORBARef("iscream.Filter." + filter));
106	>	} catch (ComponentCORBAException e) {
107	>	_logger.write(toString(), Logger.DEBUG, " unable to find filter- " + filter);
108		}
69	–
70	–	// get config fileList
71	–	inBound = _socketIn.readLine();
72	–	if(!inBound.equals("FILELIST")) {
73	–	// protocol error
74	–	_socketOut.println("ERROR");
75	–	_socketOut.flush();
76	–	throw new IOException("protocol error - expected:FILELIST got:" + inBound);
77	–	}
78	–	else {
79	–	// send info
80	–	_socketOut.println(myConfig.getFileList());
81	–	_socketOut.flush();
82	–	}
83	–
84	–	// get properties
85	–	inBound = _socketIn.readLine();
86	–	while(!inBound.equals("ENDCONFIG")) {
87	–
88	–	// get the property
89	–	try {
90	–	String returnedProperty = myConfig.getProperty("Host."+inBound);
91	–
92	–	_socketOut.println(returnedProperty);
93	–	_socketOut.flush();
94	–
95	–	} catch (org.omg.CORBA.MARSHAL e) {
96	–	_socketOut.println("ERROR");
97	–	_socketOut.flush();
98	–	}
99	–	inBound = _socketIn.readLine();
100	–	}
101	–	_logger.write(toString(), Logger.SYSMSG, "configured host");
102	–	_socketOut.println("OK");
103	–	_socketOut.flush();
104	–
105	–	// get filter reference
106	–	inBound = _socketIn.readLine();
107	–	if(!inBound.equals("FILTER")) {
108	–	// protocol error
109	–	_socketOut.println("ERROR");
110	–	_socketOut.flush();
111	–	throw new IOException("protocol error - expected:FILTER got:" + inBound);
112	–	}
113	–	else {
114	–	// send info
115	–	String parentFilter =  myConfig.getProperty("Host.filter");
116	–	_logger.write(toString(), Logger.DEBUG, " looking for parent - " + parentFilter);
117	–	Filter filter = FilterHelper.narrow(ReferenceManager.getInstance().getCORBARef("iscream.Filter." + parentFilter));
118	–	_socketOut.println(filter.getHostName() + ";"
119	–	+ filter.getUDPPort() + ";"
120	–	+ filter.getTCPPort());
121	–	_socketOut.flush();
122	–	}
123	–
124	–	// confirm that all is ok
125	–	inBound = _socketIn.readLine();
126	–	if(!inBound.equals("END")) {
127	–	// protocol error
128	–	_socketOut.println("ERROR");
129	–	_socketOut.flush();
130	–	throw new IOException("protocol error - expected:END got:" + inBound);
131	–	}
132	–	else {
133	–	// send ok
134	–	_socketOut.println("OK");
135	–	_socketOut.flush();
136	–	}
137	–
109		}
110	+
111	+	// hopefully we found a filter
112	+	if(filterRef != null) {
113	+	_logger.write(toString(), Logger.DEBUG, " found filter- " + filter);
114	+	// tell the host about it...
115	+	_socketOut.println(filterRef.getHostName() + ";"
116	+	+ filterRef.getUDPPort() + ";"
117	+	+ filterRef.getTCPPort());
118	+	}
119	+	else {
120	+	// ...or throw a wobbly (and tell the host!)
121	+	_socketOut.println("ERROR");
122	+	throw new IOException("unable to find filter for host");
123	+	}
124
125	+	// confirm ok with END
126	+	getInBound("END");
127	+	_socketOut.println("OK");
128	+
129		} catch (Exception e) {
130	<	_logger.write(toString(), Logger.ERROR, "ERROR: " + e.getMessage());
130	>	_logger.write(toString(), Logger.ERROR, "ERROR - " + e);
131		}
132
144	–	_socketOut.flush();
133		// Disconnect streams & socket
134		try {
135		_socketIn.close();
#	Line 157 | Line 145 | class HostInit extends Thread {
145		* Overrides the {@link java.lang.Object#toString() Object.toString()}
146		* method to provide clean logging (every class should have this).
147		*
148	+	* This uses the uk.org.iscream.cms.server.util.NameFormat class
149	+	* to format the toString()
150	+	*
151		* @return the name of this class and its CVS revision
152		*/
153		public String toString() {
154	<	return this.getClass().getName() + "{" + _socket.getInetAddress().getHostName()
155	<	+ "}(" + REVISION.substring(11, REVISION.length() - 2) + ")";
156	<
154	>	return FormatName.getName(
155	>	_name,
156	>	getClass().getName(),
157	>	REVISION);
158		}
159
160		//---PRIVATE METHODS---
161
162	+	private String getInBound(String expected) throws IOException {
163	+	// grab the input
164	+	String inBound = getInBound();
165	+	// check if it's what we're expecting
166	+	if(!inBound.equals(expected)) {
167	+	throw new IOException("protocol error - expected:"+expected+" got:" + inBound);
168	+	}
169	+	// it should be ok then
170	+	return inBound;
171	+	}
172	+
173	+	private String getInBound() throws IOException {
174	+	// grab the input
175	+	String inBound = _socketIn.readLine();
176	+	// check for null's, likely disconnection
177	+	if(inBound == null) {
178	+	throw new IOException("got null from host, maybe it died");
179	+	}
180	+	// it's a valid message it seems
181	+	return inBound;
182	+	}
183	+
184		//---ACCESSOR/MUTATOR METHODS---
185
186		//---ATTRIBUTES---
187
188		/**
189	<	* A reference to the logger the system is using
189	>	* This holds a reference to the
190	>	* system logger that is being used.
191		*/
192	<	Logger _logger = ReferenceManager.getInstance().getLogger();
192	>	private Logger _logger = ReferenceManager.getInstance().getLogger();
193
194		/**
195		* A reference to the Configuration Manager the system is using
196		*/
197	<	ConfigurationManager _configManager = ReferenceManager.getInstance().getCM();
197	>	private ConfigurationManager _configManager = ReferenceManager.getInstance().getCM();
198
199	<	Socket _socket;
200	<	BufferedReader _socketIn;
201	<	PrintWriter _socketOut;
199	>	/**
200	>	* This is the friendly identifier of the
201	>	* component this class is running in.
202	>	* eg, a Filter may be called "filter1",
203	>	* If this class does not have an owning
204	>	* component,  a name from the configuration
205	>	* can be placed here.  This name could also
206	>	* be changed to null for utility classes.
207	>	*/
208	>	private String _name = FilterManager.NAME;
209	>
210	>	/**
211	>	* The socket this class uses
212	>	*/
213	>	private Socket _socket;
214	>
215	>	/**
216	>	* Used for the input stream of this socket
217	>	*/
218	>	private BufferedReader _socketIn;
219	>
220	>	/**
221	>	* Used for the output stream of this socket
222	>	*/
223	>	private PrintWriter _socketOut;
224
225		//---STATIC ATTRIBUTES---
226

Diff Legend

–	Removed lines
+	Added lines
<	Changed lines
>	Changed lines