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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 1.14 by tdb, Thu Jan 18 23:15:09 2001 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 uk.ac.ukc.iscream.componentmanager.*;
9	<	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.
#	Line 30 | 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");
64	–	_socketOut.flush();
65	–	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		}
72	–
73	–	// get config fileList
74	–	inBound = _socketIn.readLine();
75	–	if(!inBound.equals("FILELIST")) {
76	–	// protocol error
77	–	_socketOut.println("ERROR");
78	–	_socketOut.flush();
79	–	throw new IOException("protocol error - expected:FILELIST got:" + inBound);
80	–	}
81	–	else {
82	–	// send info
83	–	_socketOut.println(myConfig.getFileList());
84	–	_socketOut.flush();
85	–	}
86	–
87	–	// get properties
88	–	inBound = _socketIn.readLine();
89	–	while(!inBound.equals("ENDCONFIG")) {
90	–
91	–	// get the property
92	–	try {
93	–	String returnedProperty = myConfig.getProperty("Host."+inBound);
94	–
95	–	_socketOut.println(returnedProperty);
96	–	_socketOut.flush();
97	–
98	–	} catch (org.omg.CORBA.MARSHAL e) {
99	–	_socketOut.println("ERROR");
100	–	_socketOut.flush();
101	–	}
102	–	inBound = _socketIn.readLine();
103	–	}
104	–	_logger.write(toString(), Logger.SYSMSG, "configured host");
105	–	_socketOut.println("OK");
106	–	_socketOut.flush();
107	–
108	–	// get filter reference
109	–	inBound = _socketIn.readLine();
110	–	if(!inBound.equals("FILTER")) {
111	–	// protocol error
112	–	_socketOut.println("ERROR");
113	–	_socketOut.flush();
114	–	throw new IOException("protocol error - expected:FILTER got:" + inBound);
115	–	}
116	–	else {
117	–	// send info
118	–	String parentFilter =  myConfig.getProperty("Host.filter");
119	–	_logger.write(toString(), Logger.DEBUG, " looking for parent - " + parentFilter);
120	–	Filter filter = FilterHelper.narrow(ReferenceManager.getInstance().getCORBARef("iscream.Filter." + parentFilter));
121	–	_socketOut.println(filter.getHostName() + ";"
122	–	+ filter.getUDPPort() + ";"
123	–	+ filter.getTCPPort());
124	–	_socketOut.flush();
125	–	}
126	–
127	–	// confirm that all is ok
128	–	inBound = _socketIn.readLine();
129	–	if(!inBound.equals("END")) {
130	–	// protocol error
131	–	_socketOut.println("ERROR");
132	–	_socketOut.flush();
133	–	throw new IOException("protocol error - expected:END got:" + inBound);
134	–	}
135	–	else {
136	–	// send ok
137	–	_socketOut.println("OK");
138	–	_socketOut.flush();
139	–	}
140	–
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
147	–	_socketOut.flush();
133		// Disconnect streams & socket
134		try {
135		_socketIn.close();
#	Line 160 | 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.ac.ukc.iscream.util.NameFormat class
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
#	Line 173 | Line 158 | class HostInit extends Thread {
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

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