host/java/JavaHost.java

/* 
 * i-scream central monitoring system
 * http://www.i-scream.org.uk
 * Copyright (C) 2000-2002 i-scream
 * 
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 * 
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 * 
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 */

//---PACKAGE DECLARATION---

//---IMPORTS---

/**
 * A small efficient JavaHost
 * Designed to be used as a working design to build the C++ hosts on.
 * Hopefully fully functional and thus can be used as part of a test rig.
 *
 * @author  $Author: tdb $
 * @version $Id: JavaHost.java,v 1.9 2002/05/21 16:47:12 tdb Exp $
 */
class JavaHost {
    
//---FINAL ATTRIBUTES---

//---STATIC METHODS---

//---CONSTRUCTORS---
    
    /**
     * Constructor for the class. Takes in the hostname and port number
     * of the Filter Manager.
     *
     */
    public JavaHost( String serverName, int port ){
        // create a connection to the filter manager
        System.out.println("Creating connection with Filter Manager");
        Config config = new Config(serverName, port);
        // the config class knows what values it wants to get from
        // the configuration system
        
        // create a SystemMonitor object and pass the config
        // as a param so it knows what to do!
        System.out.println("Creating System Monitor");
        SystemMonitor sysMon = new SystemMonitor(config);
        
        try {
            udpcheckInterval = Long.parseLong(config.getProperty("UDPUpdateTime")) * 1000;
            System.out.println("Configured UDPUpdateTime");
        }
        catch ( NumberFormatException e ){
            System.out.println("The value for UDPUpdateTime is invalid, using a default");
            // 1 mins
            udpcheckInterval = 1000 * 60;  // 1 minute
        }
        
        try {
            tcpcheckInterval = Long.parseLong(config.getProperty("TCPUpdateTime")) * 1000;
            System.out.println("Configured TCPUpdateTime");
        }
        catch ( NumberFormatException e ){
            System.out.println("The value for UDPUpdateTime is invalid, using a default");
            // 10 mins
            tcpcheckInterval = 10000 * 60;  // 5 minutes
        }
        
        // the current time..
        long currentTime = System.currentTimeMillis();
        long nextUDP = currentTime + udpcheckInterval;
        long nextTCP = currentTime + tcpcheckInterval;
        
        while ( true ){
            currentTime = System.currentTimeMillis();
            // keep going for ever and ever ;)
            
            if ( nextTCP < nextUDP ){
                try {
                    long sleeptime = nextTCP - currentTime;
                    if ( sleeptime > 0 ){
                        Thread.sleep(sleeptime);
                    }
                    nextTCP += tcpcheckInterval;
                    // send a heartbeat
                    //System.out.println("Sending Heartbeat");
                        System.out.print("+");
                config.sendHeartBeat();
                if ( config.reloadConfig() ){
                    System.out.println("\nRestarting System");
                    break;  
                }
         }
         catch ( InterruptedException e ){
            // do nothing
         }
            }
            else {
                try {
                    long sleeptime = nextUDP - currentTime;
                    if ( sleeptime > 0 ){
                        Thread.sleep(sleeptime);
                    }
                    nextUDP += udpcheckInterval;
                    // send a heartbeat
                //System.out.println("Sending UDP Packet");
                System.out.print(".");
                    LowLevelNet.sendUDPPacket(config, sysMon.getInfo());  
            
         }
         catch ( InterruptedException e ){
            // do nothing
         }  
            }
            
            
        } // while
        
           
    } // public javahost


//---PUBLIC METHODS---

//---PRIVATE METHODS---

//---ACCESSOR/MUTATOR METHODS---

//---ATTRIBUTES---

    private long udpcheckInterval;
    private long tcpcheckInterval;
    private final long defaultUpdateTime = 60000;


//---STATIC ATTRIBUTES---

} // class
Revision:	1.10
Committed:	Mon Jun 10 14:10:46 2002 UTC (23 years, 4 months ago) by tdb
Branch:	MAIN
CVS Tags:	HEAD
Changes since 1.9:	+1 -1 lines
State:	*FILE REMOVED*
Log Message:	Tidy up of files. These are all old things that are not only no longer used but are also probably useless to anyone other than us. This saves checking them out all the time, and makes the "cms/source" tree contain only current stuff. They'll still exist in the attic's though :)
#	Content
1	/*
2	* i-scream central monitoring system
3	* http://www.i-scream.org.uk
4	* Copyright (C) 2000-2002 i-scream
5	*
6	* This program is free software; you can redistribute it and/or
7	* modify it under the terms of the GNU General Public License
8	* as published by the Free Software Foundation; either version 2
9	* of the License, or (at your option) any later version.
10	*
11	* This program is distributed in the hope that it will be useful,
12	* but WITHOUT ANY WARRANTY; without even the implied warranty of
13	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14	* GNU General Public License for more details.
15	*
16	* You should have received a copy of the GNU General Public License
17	* along with this program; if not, write to the Free Software
18	* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
19	*/
20
21	//---PACKAGE DECLARATION---
22
23	//---IMPORTS---
24
25	/**
26	* A small efficient JavaHost
27	* Designed to be used as a working design to build the C++ hosts on.
28	* Hopefully fully functional and thus can be used as part of a test rig.
29	*
30	* @author $Author: tdb $
31	* @version $Id: JavaHost.java,v 1.9 2002/05/21 16:47:12 tdb Exp $
32	*/
33	class JavaHost {
34
35	//---FINAL ATTRIBUTES---
36
37	//---STATIC METHODS---
38
39	//---CONSTRUCTORS---
40
41	/**
42	* Constructor for the class. Takes in the hostname and port number
43	* of the Filter Manager.
44	*
45	*/
46	public JavaHost( String serverName, int port ){
47	// create a connection to the filter manager
48	System.out.println("Creating connection with Filter Manager");
49	Config config = new Config(serverName, port);
50	// the config class knows what values it wants to get from
51	// the configuration system
52
53	// create a SystemMonitor object and pass the config
54	// as a param so it knows what to do!
55	System.out.println("Creating System Monitor");
56	SystemMonitor sysMon = new SystemMonitor(config);
57
58	try {
59	udpcheckInterval = Long.parseLong(config.getProperty("UDPUpdateTime")) * 1000;
60	System.out.println("Configured UDPUpdateTime");
61	}
62	catch ( NumberFormatException e ){
63	System.out.println("The value for UDPUpdateTime is invalid, using a default");
64	// 1 mins
65	udpcheckInterval = 1000 * 60; // 1 minute
66	}
67
68	try {
69	tcpcheckInterval = Long.parseLong(config.getProperty("TCPUpdateTime")) * 1000;
70	System.out.println("Configured TCPUpdateTime");
71	}
72	catch ( NumberFormatException e ){
73	System.out.println("The value for UDPUpdateTime is invalid, using a default");
74	// 10 mins
75	tcpcheckInterval = 10000 * 60; // 5 minutes
76	}
77
78	// the current time..
79	long currentTime = System.currentTimeMillis();
80	long nextUDP = currentTime + udpcheckInterval;
81	long nextTCP = currentTime + tcpcheckInterval;
82
83	while ( true ){
84	currentTime = System.currentTimeMillis();
85	// keep going for ever and ever ;)
86
87	if ( nextTCP < nextUDP ){
88	try {
89	long sleeptime = nextTCP - currentTime;
90	if ( sleeptime > 0 ){
91	Thread.sleep(sleeptime);
92	}
93	nextTCP += tcpcheckInterval;
94	// send a heartbeat
95	//System.out.println("Sending Heartbeat");
96	System.out.print("+");
97	config.sendHeartBeat();
98	if ( config.reloadConfig() ){
99	System.out.println("\nRestarting System");
100	break;
101	}
102	}
103	catch ( InterruptedException e ){
104	// do nothing
105	}
106	}
107	else {
108	try {
109	long sleeptime = nextUDP - currentTime;
110	if ( sleeptime > 0 ){
111	Thread.sleep(sleeptime);
112	}
113	nextUDP += udpcheckInterval;
114	// send a heartbeat
115	//System.out.println("Sending UDP Packet");
116	System.out.print(".");
117	LowLevelNet.sendUDPPacket(config, sysMon.getInfo());
118
119	}
120	catch ( InterruptedException e ){
121	// do nothing
122	}
123	}
124
125
126
127	} // while
128
129
130	} // public javahost
131
132
133	//---PUBLIC METHODS---
134
135	//---PRIVATE METHODS---
136
137	//---ACCESSOR/MUTATOR METHODS---
138
139	//---ATTRIBUTES---
140
141	private long udpcheckInterval;
142	private long tcpcheckInterval;
143	private final long defaultUpdateTime = 60000;
144
145
146	//---STATIC ATTRIBUTES---
147
148	} // class