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Comparing projects/cms/source/host/ihost-perl/ihost.pl (file contents):
Revision 1.30 by pjm2, Thu Mar 15 09:44:08 2001 UTC vs.
Revision 1.36 by tdb, Wed Nov 14 16:41:30 2001 UTC

#	Line 5 | Line 5
5		# http://www.i-scream.org.uk
6		#
7		# An all-in-one script to act as an i-scream host on
8	<	# a typical Unix/Linux box.  You may adapt the data-gathering
9	<	# methods as you see fit.
10	<	#  - pjm2@ukc.ac.uk
8	>	# a typical Unix/Linux box.
9		#
10		# $Author$
11		# $Id$
#	Line 35 | Line 33 | use vars qw (
33		$fqdn
34		$pidfile
35		$retry_wait
36	+	@statgrab
37		);
38
39		if (@ARGV != 2) {
#	Line 45 | Line 44 | $filter_manager_addr = $ARGV[0];
44		$filter_manager_port = $ARGV[1];
45
46		$seq_no = 1;
47	<	$retry_wait = 600;
47	>	$retry_wait = 60;
48
49		# write our PID to a file
50		$pidfile = "/var/tmp/ihost.pid";
#	Line 75 | Line 74 | while (1) {
74		else {
75		$delay = $next_tcp;
76		}
77	<	`sleep $delay`;
77	>	sleep $delay;
78		}
79
80		# we'll probably never get here...
#	Line 90 | Line 89 | exit(0);
89		#-----------------------------------------------------------------------
90		sub wait_then_retry() {
91		print "Will retry configuration with filter manager in $retry_wait seconds.\n";
92	<	`sleep $retry_wait`;
92	>	sleep $retry_wait;
93		}
94
95
#	Line 102 | Line 101 | sub wait_then_retry() {
101		#-----------------------------------------------------------------------
102		sub tcp_configure() {
103
104	<	while (1 == 1) {
104	>	while (1) {
105		my($sock) = new IO::Socket::INET(
106		PeerAddr => $filter_manager_addr,
107		PeerPort => $filter_manager_port,
#	Line 120 | Line 119 | sub tcp_configure() {
119
120		print $sock "STARTCONFIG\n";
121		$response = <$sock>;
122	<	if (!chop $response eq "OK") {
123	<	print "The i-scream server rejected the STARTCONFIG command.  Terminated.";
122	>	if ($response && !($response eq "OK\n")) {
123	>	print "The i-scream server rejected the STARTCONFIG command.\n";
124		close($sock);
125		wait_then_retry();
126		next;
#	Line 131 | Line 130 | sub tcp_configure() {
130
131		print $sock "LASTMODIFIED\n";
132		$response = <$sock>;
133	+	if (!$response) {
134	+	print "The i-scream server did not return anything for the LASTMODIFIED command.\n";
135	+	close($sock);
136	+	wait_then_retry();
137	+	next;
138	+	}
139		chop $response;
140		$last_modified = $response;
141
#	Line 138 | Line 143 | sub tcp_configure() {
143
144		print $sock "FILELIST\n";
145		$response = <$sock>;
146	+	if (!$response) {
147	+	print "The i-scream server did not provide a configuration file list.\n";
148	+	close($sock);
149	+	wait_then_retry();
150	+	next;
151	+	}
152		chop $response;
153		$file_list = $response;
154
#	Line 145 | Line 156 | sub tcp_configure() {
156
157		print $sock "FQDN\n";
158		$response = <$sock>;
159	+	if (!$response) {
160	+	print "The i-scream server did not tell us our FQDN.\n";
161	+	close($sock);
162	+	wait_then_retry();
163	+	next;
164	+	}
165		chop $response;
166		$fqdn = $response;
167
#	Line 152 | Line 169 | sub tcp_configure() {
169
170		print $sock "UDPUpdateTime\n";
171		$response = <$sock>;
172	+	if (!$response) {
173	+	print "The i-scream server did not give us a UDPUpdateTime.\n";
174	+	close($sock);
175	+	wait_then_retry();
176	+	next;
177	+	}
178		chop $response;
179		$udp_update_time = $response;
180
181		print $sock "TCPUpdateTime\n";
182		$response = <$sock>;
183	+	if (!$response) {
184	+	print "The i-scream server did not give us a TCPUpdateTime.\n";
185	+	close($sock);
186	+	wait_then_retry();
187	+	next;
188	+	}
189		chop $response;
190		$tcp_update_time = $response;
191
#	Line 164 | Line 193 | sub tcp_configure() {
193
194		print $sock "ENDCONFIG\n";
195		$response = <$sock>;
196	<	chomp $response;
168	<	if (!$response eq "OK") {
196	>	if ($response && !($response eq "OK\n")) {
197		print "ENDCONFIG command to server failed.  Terminated.\n";
198		close($sock);
199		wait_then_retry();
#	Line 176 | Line 204 | sub tcp_configure() {
204
205		print $sock "FILTER\n";
206		$response = <$sock>;
207	<	unless (defined($response)) {
207	>	if (!$response) {
208		print "Failed: Could not get a filter address from the filter manager.\n";
209		close($sock);
210		wait_then_retry();
211		next;
212		}
213		chop $response;
214	<	$response =~ /(.*);(.*);(.*)/;
214	>	$response =~ /^(.*);(.*);(.*)/;
215		if ($response eq "ERROR") {
216		print "There are no active configured filters for your host.\n";
217		close($sock);
#	Line 202 | Line 230 | sub tcp_configure() {
230
231		print $sock "END\n";
232		$response = <$sock>;
233	<	chop $response;
206	<	if ($response eq "OK") {
233	>	if ($response && ($response eq "OK\n")) {
234		print "Host successfully configured via TCP.\n"
235		}
236		else {
237	<	print "The server failed the host configuration on the END command.";
237	>	print "The server failed the host configuration on the END command.\n";
238		close($sock);
239		wait_then_retry();
240		next;
#	Line 222 | Line 249 | sub tcp_configure() {
249		}
250
251
225	–
226	–
252		#-----------------------------------------------------------------------
253		# send_udp_packet
254		# Sends a UDP packet to an i-scream filter.
#	Line 232 | Line 257 | sub tcp_configure() {
257		#-----------------------------------------------------------------------
258		sub send_udp_packet() {
259
260	<	my(@statgrab) = `./statgrab.pl`;
236	<	my(%packet);
237	<	for (my($i) = 0; $i <= $#statgrab; $i++) {
238	<	$statgrab[$i] =~ /^([^\s]*) (.*)$/;
239	<	$packet{$1} = $2;
240	<	}
260	>	@statgrab = `./statgrab.pl`;
261
262	+	# get some extra data
263		my($date) = time;
264	+	my($ip);
265	+	$ip = inet_ntoa(scalar(gethostbyname(hostname())) || 'localhost') or $ip = 'localhost';
266
267	<	my($disk_info) = "<disk>";
268	<	my($i) = 0;
269	<	while (defined $packet{"packet.disk.p$i.attributes.mount"}) {
270	<	$disk_info .= "<p$i";
271	<	$disk_info .= " name=\"" . $packet{"packet.disk.p$i.attributes.name"} . "\"";
272	<	$disk_info .= " kbytes=\"" . $packet{"packet.disk.p$i.attributes.kbytes"} . "\"";
250	<	$disk_info .= " used=\"" . $packet{"packet.disk.p$i.attributes.used"} . "\"";
251	<	$disk_info .= " avail=\"" . $packet{"packet.disk.p$i.attributes.avail"} . "\"";
252	<	$disk_info .= " mount=\"" . $packet{"packet.disk.p$i.attributes.mount"} . "\"";
253	<	$disk_info .= "></p$i>";
254	<	++$i;
255	<	}
256	<	$disk_info .= "</disk>";
257	<
258	<	my($ip) = inet_ntoa(scalar(gethostbyname(hostname())) || 'localhost');
259	<
260	<	# Build the XML packet this way, as we can clearly
261	<	# see the structure and contents... I like this ;-)
262	<	# [Note that the server rejects UDP packets that are
263	<	# larger than 8196 bytes]
264	<	my($xml) = <<EOF;
267	>	# add some extra data to the array
268	>	push(@statgrab, "packet.attributes.seq_no=$seq_no");
269	>	push(@statgrab, "packet.attributes.machine_name=$fqdn");
270	>	push(@statgrab, "packet.attributes.date=$date");
271	>	push(@statgrab, "packet.attributes.type=data");
272	>	push(@statgrab, "packet.attributes.ip=$ip");
273
274	<	<packet seq_no="$seq_no" machine_name="$fqdn" date="$date" type="data" ip="$ip">
275	<	<load>
276	<	<load1>$packet{"packet.load.load1"}</load1>
269	<	<load5>$packet{"packet.load.load5"}</load5>
270	<	<load15>$packet{"packet.load.load15"}</load15>
271	<	</load>
272	<	<os>
273	<	<name>$packet{"packet.os.name"}</name>
274	<	<release>$packet{"packet.os.release"}</release>
275	<	<platform>$packet{"packet.os.platform"}</platform>
276	<	<sysname>$packet{"packet.os.sysname"}</sysname>
277	<	<version>$packet{"packet.os.version"}</version>
278	<	<uptime>$packet{"packet.os.uptime"}</uptime>
279	<	</os>
280	<	<users>
281	<	<count>$packet{"packet.users.count"}</count>
282	<	<list>$packet{"packet.users.list"}</list>
283	<	</users>
284	<	<processes>
285	<	<total>$packet{"packet.processes.total"}</total>
286	<	<sleeping>$packet{"packet.processes.sleeping"}</sleeping>
287	<	<zombie>$packet{"packet.processes.zombie"}</zombie>
288	<	<stopped>$packet{"packet.processes.stopped"}</stopped>
289	<	<cpu>$packet{"packet.processes.cpu"}</cpu>
290	<	</processes>
291	<	<cpu>
292	<	<idle>$packet{"packet.cpu.idle"}</idle>
293	<	<user>$packet{"packet.cpu.user"}</user>
294	<	<kernel>$packet{"packet.cpu.kernel"}</kernel>
295	<	<iowait>$packet{"packet.cpu.iowait"}</iowait>
296	<	<swap>$packet{"packet.cpu.swap"}</swap>
297	<	</cpu>
298	<	<memory>
299	<	<total>$packet{"packet.memory.total"}</total>
300	<	<free>$packet{"packet.memory.free"}</free>
301	<	</memory>
302	<	<swap>
303	<	<total>$packet{"packet.swap.total"}</total>
304	<	<free>$packet{"packet.swap.free"}</free>
305	<	</swap>
306	<	$disk_info
307	<	</packet>
308	<
309	<	EOF
310	<
311	<	# Make the packet smaller by stripping out newlines and leading spaces.
312	<	$xml =~ s/\n\s*//g;
313	<
274	>	# turn the array into some nice XML
275	>	my($xml) = &make_xml("", "");
276	>
277		my($sock) = new IO::Socket::INET (
278		PeerPort => $udp_port,
279		PeerAddr => $filter_addr,
280		Proto => 'udp'
281		) or die "Could not send UDP: $!\n";
282	<
282	>
283		print $sock $xml or die "Could not send UDP packet: $!\n";
284		close($sock);
285		$seq_no++;
#	Line 326 | Line 289 | EOF
289		}
290
291
329	–
330	–
292		#-----------------------------------------------------------------------
293		# send_tcp_heartbeat
294		# Establishes a TCP connection to an i-scream filter.
295		# The heartbeat is used as a guaranteed "I'm alive" delivery mechanism.
296	+	# If we need to reconfigure, then we complete the heartbeat before
297	+	# doing so.
298		#-----------------------------------------------------------------------
299		sub send_tcp_heartbeat() {
300
301	+	my ($doReconfigure) = 0;
302	+
303		my($sock) = new IO::Socket::INET(
304		PeerAddr => $filter_addr,
305		PeerPort => $tcp_port,
#	Line 351 | Line 316 | sub send_tcp_heartbeat() {
316
317		print $sock "HEARTBEAT\n";
318		$response = <$sock>;
319	<	return if (!defined $response);
355	<	chop $response;
356	<	if (!$response eq "OK") {
319	>	if (!$response eq "OK\n") {
320		close($sock);
321		print "Server gave wrong response to HEARTBEAT: $response\n";
322		&tcp_configure();
#	Line 362 | Line 325 | sub send_tcp_heartbeat() {
325
326		print $sock "CONFIG\n";
327		$response = <$sock>;
328	<	return if (!defined $response);
366	<	chop $response;
367	<	if (!$response eq "OK") {
328	>	if (!$response eq "OK\n") {
329		close($sock);
330		print "Server gave wrong response to CONFIG: $response\n";
331		&tcp_configure();
#	Line 373 | Line 334 | sub send_tcp_heartbeat() {
334
335		print $sock "$file_list\n";
336		$response = <$sock>;
337	<	return if (!defined $response);
377	<	chop $response;
378	<	if (!$response eq "OK") {
337	>	if (!$response eq "OK\n") {
338		close($sock);
339		print "Server gave wrong response to file list: $response\n";
340		&tcp_configure();
#	Line 384 | Line 343 | sub send_tcp_heartbeat() {
343
344		print $sock "$last_modified\n";
345		$response = <$sock>;
346	<	return if (!defined $response);
388	<	chop $response;
389	<	if ($response eq "ERROR") {
346	>	if ($response eq "ERROR\n") {
347		close($sock);
348		print "Server configuration changed.  Reconfiguring with filter manager.\n";
349	<	&tcp_configure();
393	<	return;
349	>	$doReconfigure = 1;
350		}
351	<	if (!$response eq "OK") {
351	>	if (!$response eq "OK\n") {
352		close($sock);
353		print "Server gave wrong response to HEARTBEAT: $response\n";
354		&tcp_configure();
#	Line 401 | Line 357 | sub send_tcp_heartbeat() {
357
358		print $sock "ENDHEARTBEAT\n";
359		$response = <$sock>;
360	<	return if (!defined $response);
405	<	chop $response;
406	<	if (!$response eq "OK") {
360	>	if (!$response eq "OK\n") {
361		close($sock);
362		print "Server gave wrong response to ENDHEARTBEAT: $response\n";
363		&tcp_configure();
#	Line 413 | Line 367 | sub send_tcp_heartbeat() {
367		close($sock);
368		print "^";
369
370	+	&tcp_configure() if $doReconfigure;
371	+
372		return;
373		}
374
375	+
376		#-----------------------------------------------------------------------
377		# write_pid
378		# Writes the PID (process ID) of this instance to $pidfile.
#	Line 427 | Line 384 | sub write_pid() {
384		close PID;
385
386		return;
387	+	}
388	+
389	+	#-----------------------------------------------------------------------
390	+	# make_xml
391	+	# Turns an array of statgrab data into an XML string.
392	+	#-----------------------------------------------------------------------
393	+	sub make_xml() {
394	+	my($curlevel, $curline) = @_;
395	+	my($xmltemp) = ""; my($curtag) = ""; my($attributes) = "";
396	+	while(true) {
397	+	$curline = shift(@statgrab) if $curline eq ""; chomp $curline;
398	+	if($curline =~ /^$curlevel([^\.\s]+\.)/) {
399	+	$curtag=$1;
400	+	}
401	+	if($curline =~ /^$curlevel$curtag([^\.\s]+)\s+(.*)$/) {
402	+	$xmltemp .= "<$1$attributes>$2</$1>";
403	+	}
404	+	elsif($curline =~ /^$curlevel$curtag(attributes)\.([^\.=]+)=(.*)$/) {
405	+	$attributes .= " $2=\"$3\"";
406	+	}
407	+	else {
408	+	$xmltemp .= &make_xml("$curlevel$curtag", $curline);
409	+	}
410	+	my($nextline) = $statgrab[0]; chomp $nextline if defined $nextline;
411	+	$curtag =~ s/(.*)\./$1/;
412	+	if(defined $nextline && $nextline =~ /^$curlevel$curtag\./) {
413	+	$curline = "";
414	+	}
415	+	else {
416	+	$xmltemp = "<$curtag$attributes>$xmltemp</$curtag>" unless $curtag eq "";
417	+	return $xmltemp;
418	+	}
419	+	}
420		}

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