1 |
+ |
/* |
2 |
+ |
* i-scream central monitoring system |
3 |
+ |
* Copyright (C) 2000-2002 i-scream |
4 |
+ |
* |
5 |
+ |
* This program is free software; you can redistribute it and/or |
6 |
+ |
* modify it under the terms of the GNU General Public License |
7 |
+ |
* as published by the Free Software Foundation; either version 2 |
8 |
+ |
* of the License, or (at your option) any later version. |
9 |
+ |
* |
10 |
+ |
* This program is distributed in the hope that it will be useful, |
11 |
+ |
* but WITHOUT ANY WARRANTY; without even the implied warranty of |
12 |
+ |
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
13 |
+ |
* GNU General Public License for more details. |
14 |
+ |
* |
15 |
+ |
* You should have received a copy of the GNU General Public License |
16 |
+ |
* along with this program; if not, write to the Free Software |
17 |
+ |
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
18 |
+ |
*/ |
19 |
+ |
|
20 |
|
//---PACKAGE DECLARATION--- |
21 |
< |
package uk.ac.ukc.iscream.filter; |
21 |
> |
package uk.org.iscream.cms.server.filter; |
22 |
|
|
23 |
|
//---IMPORTS--- |
24 |
< |
import uk.ac.ukc.iscream.core.*; |
25 |
< |
import uk.ac.ukc.iscream.filter.*; |
24 |
> |
import uk.org.iscream.cms.server.core.*; |
25 |
> |
import uk.org.iscream.cms.server.filter.*; |
26 |
> |
import uk.org.iscream.cms.server.componentmanager.*; |
27 |
|
import java.net.Socket; |
8 |
– |
import java.io.InputStream; |
9 |
– |
import java.io.OutputStream; |
10 |
– |
import java.io.IOException; |
28 |
|
import java.io.*; |
29 |
< |
import uk.ac.ukc.iscream.util.*; |
29 |
> |
import java.util.Random; |
30 |
> |
import uk.org.iscream.cms.server.util.*; |
31 |
|
|
32 |
|
/** |
33 |
|
* This provides Host heartbeat functionality |
47 |
|
//---STATIC METHODS--- |
48 |
|
|
49 |
|
//---CONSTRUCTORS--- |
50 |
< |
|
50 |
> |
|
51 |
> |
/** |
52 |
> |
* Construct a new TCPReaderInit. |
53 |
> |
* |
54 |
> |
* @param socket the Socket to which the host is connected |
55 |
> |
* @param queue the Queue to which we'll add data |
56 |
> |
* @throws IOException if something goes badly wrong |
57 |
> |
*/ |
58 |
|
public TCPReaderInit(Socket socket, Queue queue) throws IOException { |
59 |
+ |
// set the Thread name |
60 |
+ |
setName("filter.TCPReaderInit"); |
61 |
+ |
|
62 |
|
_socket = socket; |
63 |
|
_queue = queue; |
64 |
+ |
// setup the 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 |
|
|
70 |
|
//---PUBLIC METHODS--- |
71 |
< |
|
71 |
> |
|
72 |
> |
/** |
73 |
> |
* Main run method. Will communicate with the host, inform it |
74 |
> |
* if any updates to it's configuration are needed, and send |
75 |
> |
* a heartbeat packet into the system. |
76 |
> |
*/ |
77 |
|
public void run() { |
78 |
|
try { |
79 |
< |
//variables |
80 |
< |
String filelist = ""; |
47 |
< |
String lastModified = ""; |
48 |
< |
String inBound = ""; |
79 |
> |
// get an instance of the KeyManager |
80 |
> |
KeyManager keyman = KeyManager.getInstance(); |
81 |
|
|
82 |
< |
inBound = _socketIn.readLine(); |
83 |
< |
if(!inBound.equals("HEARTBEAT")) { |
84 |
< |
_socketOut.println("ERROR"); |
53 |
< |
_socketOut.flush(); |
54 |
< |
throw new IOException("protocol error - expecting:HEARTBEAT got:" + inBound); |
55 |
< |
} else { |
56 |
< |
_socketOut.println("OK"); |
57 |
< |
_socketOut.flush(); |
58 |
< |
} |
82 |
> |
// get some information about the host |
83 |
> |
String hostname = _socket.getInetAddress().getHostName().toLowerCase(); |
84 |
> |
String ipadd = _socket.getInetAddress().getHostAddress(); |
85 |
|
|
86 |
< |
inBound = _socketIn.readLine(); |
87 |
< |
if(!inBound.equals("CONFIG")) { |
88 |
< |
_socketOut.println("ERROR"); |
89 |
< |
_socketOut.flush(); |
90 |
< |
throw new IOException("protocol error - expecting:CONFIG got:" + inBound); |
91 |
< |
} else { |
92 |
< |
_socketOut.println("OK"); |
93 |
< |
_socketOut.flush(); |
86 |
> |
// try for HEARTBEAT |
87 |
> |
getInBound("HEARTBEAT"); |
88 |
> |
_socketOut.println("OK"); |
89 |
> |
|
90 |
> |
// look for a command: |
91 |
> |
// CONFIG - to check config |
92 |
> |
// KEY - to get the key |
93 |
> |
// ENDHEARTBEAT - to finish |
94 |
> |
String cmd = getInBound(); |
95 |
> |
while(!cmd.equals("ENDHEARTBEAT")) { |
96 |
> |
if(cmd.equals("CONFIG")) { |
97 |
> |
// respond to CONFIG |
98 |
> |
_socketOut.println("OK"); |
99 |
> |
|
100 |
> |
// try for {filelist} |
101 |
> |
String filelist = getInBound(); |
102 |
> |
_socketOut.println("OK"); |
103 |
> |
|
104 |
> |
// try for {lastModified} |
105 |
> |
String lastModified = getInBound(); |
106 |
> |
// check to see if a config update has happen |
107 |
> |
boolean newConfig = _configManager.isModified(filelist, Long.parseLong(lastModified)); |
108 |
> |
if(newConfig) { |
109 |
> |
// new config ! |
110 |
> |
_socketOut.println("ERROR"); |
111 |
> |
} |
112 |
> |
else { |
113 |
> |
// nothing has changed |
114 |
> |
_socketOut.println("OK"); |
115 |
> |
} |
116 |
> |
} |
117 |
> |
else if(cmd.equals("KEY")) { |
118 |
> |
// repsond to KEY |
119 |
> |
// generate a key |
120 |
> |
String key = keyman.genKey(); |
121 |
> |
// send key to host |
122 |
> |
_socketOut.println(key); |
123 |
> |
// add it to the key manager |
124 |
> |
keyman.addKey(hostname, key); |
125 |
> |
} |
126 |
> |
else { |
127 |
> |
_socketOut.println("ERROR"); |
128 |
> |
} |
129 |
> |
// get the next command |
130 |
> |
cmd = getInBound(); |
131 |
|
} |
132 |
|
|
133 |
< |
inBound = _socketIn.readLine(); |
71 |
< |
filelist = inBound; |
133 |
> |
// respond to ENDHEARTBEAT |
134 |
|
_socketOut.println("OK"); |
73 |
– |
_socketOut.flush(); |
135 |
|
|
136 |
< |
inBound = _socketIn.readLine(); |
137 |
< |
lastModified = inBound; |
136 |
> |
// work out some information for our heartbeat packet |
137 |
> |
String date = new Long(System.currentTimeMillis()/((long) 1000)).toString(); //seconds |
138 |
|
|
139 |
< |
boolean newConfig = _configManager.isModified(filelist, Long.parseLong(lastModified)); |
139 |
> |
// run the service checks for this host |
140 |
> |
_logger.write(toString(), Logger.DEBUG, "Running service checks"); |
141 |
> |
String checks = PluginServiceCheckManager.getInstance().runServiceChecks(hostname); |
142 |
|
|
143 |
< |
if(newConfig) { |
144 |
< |
_socketOut.println("ERROR"); |
82 |
< |
} |
83 |
< |
else { |
84 |
< |
_socketOut.println("OK"); |
85 |
< |
} |
86 |
< |
_socketOut.flush(); |
143 |
> |
// build the heartbeat packet |
144 |
> |
String xml = "<packet type=\"heartbeat\" machine_name=\""+hostname+"\" date=\""+date+"\" ip=\""+ipadd+"\">" + checks + "</packet>"; |
145 |
|
|
146 |
< |
inBound = _socketIn.readLine(); |
89 |
< |
if(!inBound.equals("ENDHEARTBEAT")) { |
90 |
< |
_socketOut.println("ERROR"); |
91 |
< |
_socketOut.flush(); |
92 |
< |
throw new IOException("protocol error - expecting:ENDHEARTBEAT got:" + inBound); |
93 |
< |
} else { |
94 |
< |
_socketOut.println("OK"); |
95 |
< |
_socketOut.flush(); |
96 |
< |
} |
97 |
< |
|
98 |
< |
String date = new Long(System.currentTimeMillis()).toString(); |
99 |
< |
String hostname = _socket.getInetAddress().getHostName(); |
100 |
< |
String ipadd = _socket.getInetAddress().getHostAddress(); |
101 |
< |
String xml = "<packet type=\"heartbeat\" machine_name=\""+hostname+"\" date=\""+date+"\" ip=\""+ipadd+"\"></packet>"; |
102 |
< |
|
146 |
> |
// get it to be sent on |
147 |
|
_queue.add(xml); |
148 |
|
|
149 |
|
} catch (Exception e) { |
150 |
< |
_logger.write(toString(), Logger.ERROR, "ERROR: " + e.getMessage()); |
150 |
> |
_logger.write(toString(), Logger.ERROR, "ERROR: " + e); |
151 |
|
} |
152 |
|
|
109 |
– |
_socketOut.flush(); |
153 |
|
// Disconnect streams & socket |
154 |
|
try { |
155 |
|
_socketIn.close(); |
158 |
|
} catch (IOException e) { |
159 |
|
_logger.write(toString(), Logger.ERROR, "exception on socket close"); |
160 |
|
} |
161 |
< |
_logger.write(toString(), Logger.SYSMSG, "finished"); |
161 |
> |
_logger.write(toString(), Logger.DEBUG, "finished"); |
162 |
|
} |
163 |
|
|
164 |
|
/** |
165 |
|
* Overrides the {@link java.lang.Object#toString() Object.toString()} |
166 |
|
* method to provide clean logging (every class should have this). |
167 |
|
* |
168 |
< |
* This uses the uk.ac.ukc.iscream.util.NameFormat class |
168 |
> |
* This uses the uk.org.iscream.cms.server.util.NameFormat class |
169 |
|
* to format the toString() |
170 |
|
* |
171 |
|
* @return the name of this class and its CVS revision |
179 |
|
|
180 |
|
//---PRIVATE METHODS--- |
181 |
|
|
182 |
+ |
private String getInBound(String expected) throws IOException { |
183 |
+ |
// grab the input |
184 |
+ |
String inBound = getInBound(); |
185 |
+ |
// check if it's what we're expecting |
186 |
+ |
if(!inBound.equals(expected)) { |
187 |
+ |
throw new IOException("protocol error from "+_socket.getInetAddress().getHostName()+" - expected:"+expected+" got:" + inBound); |
188 |
+ |
} |
189 |
+ |
// it should be ok then |
190 |
+ |
return inBound; |
191 |
+ |
} |
192 |
+ |
|
193 |
+ |
private String getInBound() throws IOException { |
194 |
+ |
// grab the input |
195 |
+ |
String inBound = _socketIn.readLine(); |
196 |
+ |
// check for null's, likely disconnection |
197 |
+ |
if(inBound == null) { |
198 |
+ |
throw new IOException("got null from host, maybe it died"); |
199 |
+ |
} |
200 |
+ |
// it's a valid message it seems |
201 |
+ |
return inBound; |
202 |
+ |
} |
203 |
+ |
|
204 |
|
//---ACCESSOR/MUTATOR METHODS--- |
205 |
|
|
206 |
|
//---ATTRIBUTES--- |
246 |
|
* A reference to our Queue |
247 |
|
*/ |
248 |
|
Queue _queue; |
249 |
+ |
|
250 |
|
//---STATIC ATTRIBUTES--- |
251 |
|
|
252 |
|
} |