host/ihost-perl/ihost.pl

#!/usr/bin/perl -w

# -----------------------------------------------------------
# Perl i-scream Host.
#
# An all-in-one script to act as an i-scream host on
# a typical Unix/Linux box.  You may adapt the data-gathering
# methods as you see fit.
#  - pjm2@ukc.ac.uk
#
# $Author: pjm2 $
# $Id: ihost.pl,v 1.8 2001/01/29 09:19:16 pjm2 Exp $
#------------------------------------------------------------

$| = 1;

use strict;
use IO::Socket;
use Sys::Hostname;

use vars qw (
             $filter_manager_addr
             $filter_manager_port
             $seq_no
             $udp_update_time
             $tcp_update_time
             $last_udp_time
             $last_tcp_time
             $last_modified
             $udp_port
             $tcp_port
             $filter_addr
             $file_list
            );

if (@ARGV != 2) {
    die "Usage: ihost.pl [i-scream filter manager] [TCP port]\n";
}

$filter_manager_addr = $ARGV[0];
$filter_manager_port = $ARGV[1];

$seq_no = 1;

&tcp_configure();
&send_udp_packet();

$last_udp_time = time;
$last_tcp_time = time;
while (1) {
    my($time) = time;
    if ($time >= $last_udp_time + $udp_update_time) {
        &send_udp_packet();
        $last_udp_time = $time;
    }
    if ($time >= $last_tcp_time + $tcp_update_time) {
        &send_tcp_heartbeat();
        $last_tcp_time = $time;
    }
    my($next_udp) = $udp_update_time - $time + $last_udp_time;
    my($next_tcp) = $tcp_update_time - $time + $last_tcp_time;
    my($delay);
    if ($next_udp < $next_tcp) {
        $delay = $next_udp
    }
    else {
        $delay = $next_tcp;
    }
    `sleep $delay`;
}

exit(0);

sub tcp_configure() {
    
    my($sock) = new IO::Socket::INET(
                                     PeerAddr => $filter_manager_addr,
                                     PeerPort => $filter_manager_port,
                                     Proto => 'tcp'
                                    ) or die "Could not perform configuration via TCP: $!\n";

    die "Could not connect to the i-scream filter manager: $!\n" unless $sock;

    # Now run through the configuration process.
    my($response);
    
    print $sock "STARTCONFIG\n";
    $response = <$sock>;
    if (!chop $response eq "OK") {
        print "The i-scream server rejected the STARTCONFIG command.  Terminated.";
        exit(1);
    }

    print "Config started okay.\n";
    
    print $sock "LASTMODIFIED\n";
    $response = <$sock>;
    chop $response;
    $last_modified = $response;
    
    print "Config last modified: ". (scalar localtime $last_modified/1000) . "\n";

    print $sock "FILELIST\n";
    $response = <$sock>;
    chop $response;
    $file_list = $response;

    print "File list obtained: $file_list\n";

    print $sock "UDPUpdateTime\n";
    $response = <$sock>;
    chop $response;
    $udp_update_time = $response;

    print $sock "TCPUpdateTime\n";
    $response = <$sock>;
    chop $response;
    $tcp_update_time = $response;
    
    print "UDP packet period: $udp_update_time seconds.\nTCP heartbeat period: $tcp_update_time seconds.\n";

    print $sock "ENDCONFIG\n";
    $response = <$sock>;
    chomp $response;
    if (!$response eq "OK") {
        print "ENDCONFIG command to server failed.  Terminated.\n";
        exit(1);
    }

    print "Config ended.\n";
    
    print $sock "FILTER\n";
    $response = <$sock>;
    chop $response;
    $response =~ /(.*);(.*);(.*)/;
    ($filter_addr, $udp_port, $tcp_port) = ($1, $2, $3);
    
    print "Got filter data ($filter_addr, $udp_port, $tcp_port)\n";

    print $sock "END\n";
    $response = <$sock>;
    chop $response;
    if ($response eq "OK") {
        print "Host successfully configured via TCP.\n"
    }
    else {
        print "The server failed the host configuration on the END command.";
        exit(1);
    }
    
    close($sock);

    print "Configuration finished sucessfully!\n";
}

sub send_udp_packet() {

    my(@statgrab) = `./statgrab.pl`;
    my(%packet);
    for (my($i) = 0; $i < $#statgrab; $i++) {
        $statgrab[$i] =~ /^([^\s]*) (.*)$/;
        $packet{$1} = $2;
    }
    
    my($date) = time;
    
    my($disk_info) = "<disk>";
    my($i) = 0;
    while (defined $packet{"packet.disk.p$i.attributes.mount"}) {
        $disk_info .= "<p$i>";
        $disk_info .= qq/<name>$packet{"packet.disk.p$i.attributes.name"}<\/name>/;
        $disk_info .= qq/<kbytes>$packet{"packet.disk.p$i.attributes.kbytes"}<\/kbytes>/;
        $disk_info .= qq/<used>$packet{"packet.disk.p$i.attributes.used"}<\/used>/;
        $disk_info .= qq/<avail>$packet{"packet.disk.p$i.attributes.avail"}<\/avail>/;
        $disk_info .= qq/<mount>$packet{"packet.disk.p$i.attributes.mount"}<\/mount>/;
        $disk_info .= "</p$i>";
        ++$i;
    }
    $disk_info .= "</disk>";

    my($hostname) = hostname();
    $hostname =~ s/\..*$//g;
    `cat /etc/resolv.conf` =~ /domain\s+([^\s]+)/;
    my($domainname) = $1;
    my($machine_name) = "$hostname.$domainname";
    my($ip) = inet_ntoa(scalar(gethostbyname($hostname)) || 'localhost');

    # Build the XML packet this way, as we can clearly
    # see the structure and contents... I like this ;-)
    my($xml) = <<EOF;
    
<packet seq_no="$seq_no" machine_name="$machine_name" date="$date" type="data" ip="$ip">
    <load>
        <load1>$packet{"packet.load.load1"}</load1>
        <load5>$packet{"packet.load.load5"}</load5>
        <load15>$packet{"packet.load.load15"}</load15>
    </load>
    <os>
        <name>$packet{"packet.os.name"}</name>
        <release>$packet{"packet.os.release"}</release>
        <platform>$packet{"packet.os.platform"}</platform>
        <sysname>$packet{"packet.os.sysname"}</sysname>
        <version>$packet{"packet.os.version"}</version>
    </os>
    <users>
        <count>$packet{"packet.users.count"}</count>
        <list>$packet{"packet.users.list"}</list>
    </users>
    <processes>
        <total>$packet{"packet.processes.total"}</total>
        <sleeping>$packet{"packet.processes.sleeping"}</sleeping>
        <zombie>$packet{"packet.processes.zombie"}</zombie>
        <stopped>$packet{"packet.processes.stopped"}</stopped>
        <cpu>$packet{"packet.processes.cpu"}</cpu>
    </processes>
    <cpu>
        <idle>$packet{"packet.cpu.idle"}</idle>
        <user>$packet{"packet.cpu.user"}</user>
        <kernel>$packet{"packet.cpu.kernel"}</kernel>
        <iowait>$packet{"packet.cpu.iowait"}</iowait>
        <swap>$packet{"packet.cpu.swap"}</swap>
    </cpu>
    <memory>
        <total>$packet{"packet.memory.real"}</total>
        <free>$packet{"packet.memory.free"}</free>
    </memory>
    <swap>
        <total>$packet{"packet.memory.swap_total"}</total>
        <free>$packet{"packet.memory.swap_free"}</free>
    </swap>
    $disk_info
</packet>

EOF

    $xml =~ s/\n\s*//g;
    
    my($sock) = new IO::Socket::INET (
                                      PeerPort => $udp_port,
                                      PeerAddr => $filter_addr,
                                      Proto => 'udp'
                                     ) or die "Socket: $!\n";

    print $sock $xml or die "Could not send UDP packet: $!\n";
    close($sock);
    $seq_no++;
    print "-";
}

sub send_tcp_heartbeat() {

    my($sock) = new IO::Socket::INET(
                                     PeerAddr => $filter_addr,
                                     PeerPort => $tcp_port,
                                     Proto => 'tcp'
                                    ) or die "Could not perform heartbeat via TCP: $!\n";

    die "Could not connect to the i-scream filter: $!\n" unless $sock;

    # Now run through the configuration process.
    my($response);

    print $sock "HEARTBEAT\n";
    $response = <$sock>;
    chop $response;
    if (!$response eq "OK") {
        close($sock);
        print "Server gave wrong response to HEARTBEAT: $response\n";
        return;
    }
    
    print $sock "CONFIG\n";
    $response = <$sock>;
    chop $response;
    if (!$response eq "OK") {
        close($sock);
        print "Server gave wrong response to CONFIG: $response\n";
        return;
    }

    print $sock "$file_list\n";
    $response = <$sock>;
    chop $response;
    if (!$response eq "OK") {
        close($sock);
        print "Server gave wrong response to file list: $response\n";
        return;
    }
    
    print $sock "$last_modified\n";
    $response = <$sock>;
    chop $response;
    if ($response eq "ERROR") {
        close($sock);
        &tcp_configure();
        return;
    }
    if (!$response eq "OK") {
        close($sock);
        print "Server gave wrong response to HEARTBEAT: $response\n";
        return;
    }
    
    print $sock "ENDHEARTBEAT\n";
    $response = <$sock>;
    chop $response;
    if (!$response eq "OK") {
        close($sock);
        print "Server gave wrong response to ENDHEARTBEAT: $response\n";
        return;
    }
    
    close($sock);
    print "^";
}
Revision:	1.9
Committed:	Mon Jan 29 16:51:50 2001 UTC (23 years, 9 months ago) by pjm2
Content type:	text/plain
Branch:	MAIN
Changes since 1.8:	+16 -6 lines
Log Message:	Improved the main loop.
#	User	Rev	Content
1	pjm2	1.6	#!/usr/bin/perl -w
2	pjm2	1.1
3			# -----------------------------------------------------------
4			# Perl i-scream Host.
5			#
6			# An all-in-one script to act as an i-scream host on
7			# a typical Unix/Linux box. You may adapt the data-gathering
8			# methods as you see fit.
9			# - pjm2@ukc.ac.uk
10			#
11	pjm2	1.2	# $Author: pjm2 $
12	pjm2	1.9	# $Id: ihost.pl,v 1.8 2001/01/29 09:19:16 pjm2 Exp $
13	pjm2	1.1	#------------------------------------------------------------
14
15			$\| = 1;
16
17			use strict;
18			use IO::Socket;
19			use Sys::Hostname;
20
21			use vars qw (
22			$filter_manager_addr
23			$filter_manager_port
24			$seq_no
25			$udp_update_time
26			$tcp_update_time
27			$last_udp_time
28			$last_tcp_time
29			$last_modified
30			$udp_port
31			$tcp_port
32			$filter_addr
33			$file_list
34			);
35
36			if (@ARGV != 2) {
37			die "Usage: ihost.pl [i-scream filter manager] [TCP port]\n";
38			}
39
40			$filter_manager_addr = $ARGV[0];
41			$filter_manager_port = $ARGV[1];
42
43			$seq_no = 1;
44
45			&tcp_configure();
46			&send_udp_packet();
47
48			$last_udp_time = time;
49			$last_tcp_time = time;
50			while (1) {
51	pjm2	1.9	my($time) = time;
52			if ($time >= $last_udp_time + $udp_update_time) {
53	pjm2	1.1	&send_udp_packet();
54	pjm2	1.9	$last_udp_time = $time;
55	pjm2	1.1	}
56	pjm2	1.9	if ($time >= $last_tcp_time + $tcp_update_time) {
57	pjm2	1.1	&send_tcp_heartbeat();
58	pjm2	1.9	$last_tcp_time = $time;
59	pjm2	1.1	}
60	pjm2	1.9	my($next_udp) = $udp_update_time - $time + $last_udp_time;
61			my($next_tcp) = $tcp_update_time - $time + $last_tcp_time;
62			my($delay);
63			if ($next_udp < $next_tcp) {
64			$delay = $next_udp
65			}
66			else {
67			$delay = $next_tcp;
68			}
69			`sleep $delay`;
70	pjm2	1.1	}
71
72			exit(0);
73
74			sub tcp_configure() {
75
76			my($sock) = new IO::Socket::INET(
77			PeerAddr => $filter_manager_addr,
78			PeerPort => $filter_manager_port,
79			Proto => 'tcp'
80			) or die "Could not perform configuration via TCP: $!\n";
81
82			die "Could not connect to the i-scream filter manager: $!\n" unless $sock;
83
84			# Now run through the configuration process.
85			my($response);
86
87			print $sock "STARTCONFIG\n";
88			$response = <$sock>;
89			if (!chop $response eq "OK") {
90			print "The i-scream server rejected the STARTCONFIG command. Terminated.";
91			exit(1);
92			}
93
94			print "Config started okay.\n";
95
96			print $sock "LASTMODIFIED\n";
97			$response = <$sock>;
98			chop $response;
99			$last_modified = $response;
100
101	pjm2	1.7	print "Config last modified: ". (scalar localtime $last_modified/1000) . "\n";
102	pjm2	1.1
103			print $sock "FILELIST\n";
104			$response = <$sock>;
105			chop $response;
106			$file_list = $response;
107
108			print "File list obtained: $file_list\n";
109
110			print $sock "UDPUpdateTime\n";
111			$response = <$sock>;
112			chop $response;
113			$udp_update_time = $response;
114
115			print $sock "TCPUpdateTime\n";
116			$response = <$sock>;
117			chop $response;
118			$tcp_update_time = $response;
119
120	pjm2	1.7	print "UDP packet period: $udp_update_time seconds.\nTCP heartbeat period: $tcp_update_time seconds.\n";
121	pjm2	1.1
122			print $sock "ENDCONFIG\n";
123			$response = <$sock>;
124			chomp $response;
125			if (!$response eq "OK") {
126			print "ENDCONFIG command to server failed. Terminated.\n";
127			exit(1);
128			}
129
130			print "Config ended.\n";
131
132			print $sock "FILTER\n";
133			$response = <$sock>;
134			chop $response;
135			$response =~ /(.);(.);(.*)/;
136			($filter_addr, $udp_port, $tcp_port) = ($1, $2, $3);
137
138			print "Got filter data ($filter_addr, $udp_port, $tcp_port)\n";
139
140			print $sock "END\n";
141			$response = <$sock>;
142			chop $response;
143			if ($response eq "OK") {
144			print "Host successfully configured via TCP.\n"
145			}
146			else {
147			print "The server failed the host configuration on the END command.";
148			exit(1);
149			}
150
151			close($sock);
152
153			print "Configuration finished sucessfully!\n";
154			}
155
156			sub send_udp_packet() {
157
158			my(@statgrab) = `./statgrab.pl`;
159			my(%packet);
160			for (my($i) = 0; $i < $#statgrab; $i++) {
161			$statgrab[$i] =~ /^([^\s]) (.)$/;
162			$packet{$1} = $2;
163			}
164
165			my($date) = time;
166
167			my($disk_info) = "<disk>";
168			my($i) = 0;
169			while (defined $packet{"packet.disk.p$i.attributes.mount"}) {
170			$disk_info .= "<p$i>";
171			$disk_info .= qq/<name>$packet{"packet.disk.p$i.attributes.name"}<\/name>/;
172			$disk_info .= qq/<kbytes>$packet{"packet.disk.p$i.attributes.kbytes"}<\/kbytes>/;
173			$disk_info .= qq/<used>$packet{"packet.disk.p$i.attributes.used"}<\/used>/;
174			$disk_info .= qq/<avail>$packet{"packet.disk.p$i.attributes.avail"}<\/avail>/;
175			$disk_info .= qq/<mount>$packet{"packet.disk.p$i.attributes.mount"}<\/mount>/;
176			$disk_info .= "</p$i>";
177			++$i;
178			}
179			$disk_info .= "</disk>";
180
181			my($hostname) = hostname();
182	pjm2	1.4	$hostname =~ s/\..*$//g;
183	pjm2	1.8	`cat /etc/resolv.conf` =~ /domain\s+([^\s]+)/;
184			my($domainname) = $1;
185	pjm2	1.1	my($machine_name) = "$hostname.$domainname";
186			my($ip) = inet_ntoa(scalar(gethostbyname($hostname)) \|\| 'localhost');
187
188			# Build the XML packet this way, as we can clearly
189			# see the structure and contents... I like this ;-)
190			my($xml) = <<EOF;
191
192			<packet seq_no="$seq_no" machine_name="$machine_name" date="$date" type="data" ip="$ip">
193			<load>
194			<load1>$packet{"packet.load.load1"}</load1>
195			<load5>$packet{"packet.load.load5"}</load5>
196			<load15>$packet{"packet.load.load15"}</load15>
197			</load>
198			<os>
199			<name>$packet{"packet.os.name"}</name>
200			<release>$packet{"packet.os.release"}</release>
201			<platform>$packet{"packet.os.platform"}</platform>
202			<sysname>$packet{"packet.os.sysname"}</sysname>
203			<version>$packet{"packet.os.version"}</version>
204			</os>
205			<users>
206			<count>$packet{"packet.users.count"}</count>
207			<list>$packet{"packet.users.list"}</list>
208			</users>
209			<processes>
210			<total>$packet{"packet.processes.total"}</total>
211			<sleeping>$packet{"packet.processes.sleeping"}</sleeping>
212			<zombie>$packet{"packet.processes.zombie"}</zombie>
213			<stopped>$packet{"packet.processes.stopped"}</stopped>
214			<cpu>$packet{"packet.processes.cpu"}</cpu>
215			</processes>
216			<cpu>
217			<idle>$packet{"packet.cpu.idle"}</idle>
218			<user>$packet{"packet.cpu.user"}</user>
219			<kernel>$packet{"packet.cpu.kernel"}</kernel>
220			<iowait>$packet{"packet.cpu.iowait"}</iowait>
221			<swap>$packet{"packet.cpu.swap"}</swap>
222			</cpu>
223			<memory>
224			<total>$packet{"packet.memory.real"}</total>
225			<free>$packet{"packet.memory.free"}</free>
226			</memory>
227			<swap>
228			<total>$packet{"packet.memory.swap_total"}</total>
229			<free>$packet{"packet.memory.swap_free"}</free>
230			</swap>
231			$disk_info
232			</packet>
233
234			EOF
235
236			$xml =~ s/\n\s*//g;
237
238			my($sock) = new IO::Socket::INET (
239			PeerPort => $udp_port,
240			PeerAddr => $filter_addr,
241			Proto => 'udp'
242			) or die "Socket: $!\n";
243
244			print $sock $xml or die "Could not send UDP packet: $!\n";
245			close($sock);
246			$seq_no++;
247			print "-";
248			}
249
250			sub send_tcp_heartbeat() {
251
252			my($sock) = new IO::Socket::INET(
253			PeerAddr => $filter_addr,
254			PeerPort => $tcp_port,
255			Proto => 'tcp'
256			) or die "Could not perform heartbeat via TCP: $!\n";
257
258			die "Could not connect to the i-scream filter: $!\n" unless $sock;
259
260			# Now run through the configuration process.
261			my($response);
262
263			print $sock "HEARTBEAT\n";
264			$response = <$sock>;
265			chop $response;
266			if (!$response eq "OK") {
267			close($sock);
268			print "Server gave wrong response to HEARTBEAT: $response\n";
269			return;
270			}
271
272			print $sock "CONFIG\n";
273			$response = <$sock>;
274			chop $response;
275			if (!$response eq "OK") {
276			close($sock);
277			print "Server gave wrong response to CONFIG: $response\n";
278			return;
279			}
280
281			print $sock "$file_list\n";
282			$response = <$sock>;
283			chop $response;
284			if (!$response eq "OK") {
285			close($sock);
286			print "Server gave wrong response to file list: $response\n";
287			return;
288			}
289
290			print $sock "$last_modified\n";
291			$response = <$sock>;
292			chop $response;
293			if ($response eq "ERROR") {
294			close($sock);
295			&tcp_configure();
296			return;
297			}
298			if (!$response eq "OK") {
299			close($sock);
300			print "Server gave wrong response to HEARTBEAT: $response\n";
301			return;
302			}
303
304			print $sock "ENDHEARTBEAT\n";
305			$response = <$sock>;
306			chop $response;
307			if (!$response eq "OK") {
308			close($sock);
309			print "Server gave wrong response to ENDHEARTBEAT: $response\n";
310			return;
311			}
312
313			close($sock);
314			print "^";
315			}