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.
#	Content
1	#!/usr/bin/perl -w
2
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	# $Author: pjm2 $
12	# $Id: ihost.pl,v 1.8 2001/01/29 09:19:16 pjm2 Exp $
13	#------------------------------------------------------------
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	$last_tcp_time = time;
50	while (1) {
51	my($time) = time;
52	if ($time >= $last_udp_time + $udp_update_time) {
53	&send_udp_packet();
54	$last_udp_time = $time;
55	}
56	if ($time >= $last_tcp_time + $tcp_update_time) {
57	&send_tcp_heartbeat();
58	$last_tcp_time = $time;
59	}
60	my($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 $delay`;
70	}
71
72	exit(0);
73
74	sub tcp_configure() {
75
76	my($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	print "Config last modified: ". (scalar localtime $last_modified/1000) . "\n";
102
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	print "UDP packet period: $udp_update_time seconds.\nTCP heartbeat period: $tcp_update_time seconds.\n";
121
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	$hostname =~ s/\..*$//g;
183	`cat /etc/resolv.conf` =~ /domain\s+([^\s]+)/;
184	my($domainname) = $1;
185	my($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	}