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Comparing projects/cms/source/host/ihost-perl/ihost.pl (file contents):
Revision 1.31 by pjm2, Thu Mar 15 09:46:18 2001 UTC vs.
Revision 1.42 by tdb, Wed Nov 21 10:08:20 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	+	@data
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	<	$pidfile = "/var/tmp/ihost.pid";
50	>	# use home dir by default
51	>	#$pidfile = $ENV{"HOME"};
52	>	# or drop it in /var/tmp if we can't find HOME
53	>	$pidfile = "/var/tmp" if not defined $pidfile;
54	>	$pidfile .= "/.ihost.pid";
55		&write_pid();
56
57		&tcp_configure();
#	Line 75 | Line 78 | while (1) {
78		else {
79		$delay = $next_tcp;
80		}
81	<	`sleep $delay`;
81	>	sleep $delay;
82		}
83
84		# we'll probably never get here...
#	Line 90 | Line 93 | exit(0);
93		#-----------------------------------------------------------------------
94		sub wait_then_retry() {
95		print "Will retry configuration with filter manager in $retry_wait seconds.\n";
96	<	`sleep $retry_wait`;
96	>	sleep $retry_wait;
97		}
98
99
#	Line 120 | Line 123 | sub tcp_configure() {
123
124		print $sock "STARTCONFIG\n";
125		$response = <$sock>;
126	<	if (!chop $response eq "OK") {
127	<	print "The i-scream server rejected the STARTCONFIG command.  Terminated.";
126	>	if ($response && !($response eq "OK\n")) {
127	>	print "The i-scream server rejected the STARTCONFIG command.\n";
128		close($sock);
129		wait_then_retry();
130		next;
#	Line 131 | Line 134 | sub tcp_configure() {
134
135		print $sock "LASTMODIFIED\n";
136		$response = <$sock>;
137	+	if (!$response) {
138	+	print "The i-scream server did not return anything for the LASTMODIFIED command.\n";
139	+	close($sock);
140	+	wait_then_retry();
141	+	next;
142	+	}
143		chop $response;
144		$last_modified = $response;
145
#	Line 138 | Line 147 | sub tcp_configure() {
147
148		print $sock "FILELIST\n";
149		$response = <$sock>;
150	+	if (!$response) {
151	+	print "The i-scream server did not provide a configuration file list.\n";
152	+	close($sock);
153	+	wait_then_retry();
154	+	next;
155	+	}
156		chop $response;
157		$file_list = $response;
158
#	Line 145 | Line 160 | sub tcp_configure() {
160
161		print $sock "FQDN\n";
162		$response = <$sock>;
163	+	if (!$response) {
164	+	print "The i-scream server did not tell us our FQDN.\n";
165	+	close($sock);
166	+	wait_then_retry();
167	+	next;
168	+	}
169		chop $response;
170		$fqdn = $response;
171
#	Line 152 | Line 173 | sub tcp_configure() {
173
174		print $sock "UDPUpdateTime\n";
175		$response = <$sock>;
176	+	if (!$response) {
177	+	print "The i-scream server did not give us a UDPUpdateTime.\n";
178	+	close($sock);
179	+	wait_then_retry();
180	+	next;
181	+	}
182		chop $response;
183		$udp_update_time = $response;
184
185		print $sock "TCPUpdateTime\n";
186		$response = <$sock>;
187	+	if (!$response) {
188	+	print "The i-scream server did not give us a TCPUpdateTime.\n";
189	+	close($sock);
190	+	wait_then_retry();
191	+	next;
192	+	}
193		chop $response;
194		$tcp_update_time = $response;
195
#	Line 164 | Line 197 | sub tcp_configure() {
197
198		print $sock "ENDCONFIG\n";
199		$response = <$sock>;
200	<	chomp $response;
168	<	if (!$response eq "OK") {
200	>	if ($response && !($response eq "OK\n")) {
201		print "ENDCONFIG command to server failed.  Terminated.\n";
202		close($sock);
203		wait_then_retry();
#	Line 176 | Line 208 | sub tcp_configure() {
208
209		print $sock "FILTER\n";
210		$response = <$sock>;
211	<	unless (defined($response)) {
211	>	if (!$response) {
212		print "Failed: Could not get a filter address from the filter manager.\n";
213		close($sock);
214		wait_then_retry();
215		next;
216		}
217		chop $response;
218	<	$response =~ /(.*);(.*);(.*)/;
218	>	$response =~ /^(.*);(.*);(.*)/;
219		if ($response eq "ERROR") {
220		print "There are no active configured filters for your host.\n";
221		close($sock);
#	Line 202 | Line 234 | sub tcp_configure() {
234
235		print $sock "END\n";
236		$response = <$sock>;
237	<	chop $response;
206	<	if ($response eq "OK") {
237	>	if ($response && ($response eq "OK\n")) {
238		print "Host successfully configured via TCP.\n"
239		}
240		else {
241	<	print "The server failed the host configuration on the END command.";
241	>	print "The server failed the host configuration on the END command.\n";
242		close($sock);
243		wait_then_retry();
244		next;
#	Line 222 | Line 253 | sub tcp_configure() {
253		}
254
255
225	–
226	–
256		#-----------------------------------------------------------------------
257		# send_udp_packet
258		# Sends a UDP packet to an i-scream filter.
#	Line 232 | Line 261 | sub tcp_configure() {
261		#-----------------------------------------------------------------------
262		sub send_udp_packet() {
263
264	<	my(@statgrab) = `./statgrab.pl`;
265	<	my(%packet);
266	<	for (my($i) = 0; $i <= $#statgrab; $i++) {
267	<	$statgrab[$i] =~ /^([^\s]*) (.*)$/;
268	<	$packet{$1} = $2;
264	>	my($plugins_dir) = "plugins";
265	>
266	>	opendir PLUGINS, $plugins_dir;
267	>	my(@plugins) = readdir PLUGINS;
268	>	foreach my $plugin (@plugins) {
269	>	push @data, `$plugins_dir/$plugin` if -x "$plugins_dir/$plugin" && -f "$plugins_dir/$plugin";
270		}
271
272	+	# get some extra data
273		my($date) = time;
274	+	my($ip);
275	+	$ip = inet_ntoa(scalar(gethostbyname(hostname())) || 'localhost') or $ip = 'localhost';
276
277	<	my($disk_info) = "<disk>";
278	<	my($i) = 0;
279	<	while (defined $packet{"packet.disk.p$i.attributes.mount"}) {
280	<	$disk_info .= "<p$i";
281	<	$disk_info .= " name=\"" . $packet{"packet.disk.p$i.attributes.name"} . "\"";
282	<	$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($xml) = <<EOF;
277	>	# add some extra data to the array
278	>	push(@data, "packet.attributes.seq_no=$seq_no");
279	>	push(@data, "packet.attributes.machine_name=$fqdn");
280	>	push(@data, "packet.attributes.date=$date");
281	>	push(@data, "packet.attributes.type=data");
282	>	push(@data, "packet.attributes.ip=$ip");
283
284	<	<packet seq_no="$seq_no" machine_name="$fqdn" date="$date" type="data" ip="$ip">
285	<	<load>
286	<	<load1>$packet{"packet.load.load1"}</load1>
287	<	<load5>$packet{"packet.load.load5"}</load5>
288	<	<load15>$packet{"packet.load.load15"}</load15>
289	<	</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	<	$xml =~ s/\n\s*//g;
313	<
284	>	# sort the data
285	>	@data = sort(@data);
286	>
287	>	# turn the array into some nice XML
288	>	my($xml) = &make_xml("", "");
289	>
290		my($sock) = new IO::Socket::INET (
291		PeerPort => $udp_port,
292		PeerAddr => $filter_addr,
293		Proto => 'udp'
294		) or die "Could not send UDP: $!\n";
295	<
295	>
296		print $sock $xml or die "Could not send UDP packet: $!\n";
297		close($sock);
298		$seq_no++;
#	Line 326 | Line 302 | EOF
302		}
303
304
329	–
330	–
305		#-----------------------------------------------------------------------
306		# send_tcp_heartbeat
307		# Establishes a TCP connection to an i-scream filter.
308		# The heartbeat is used as a guaranteed "I'm alive" delivery mechanism.
309	+	# If we need to reconfigure, then we complete the heartbeat before
310	+	# doing so.
311		#-----------------------------------------------------------------------
312		sub send_tcp_heartbeat() {
313
314	+	my ($doReconfigure) = 0;
315	+
316		my($sock) = new IO::Socket::INET(
317		PeerAddr => $filter_addr,
318		PeerPort => $tcp_port,
#	Line 351 | Line 329 | sub send_tcp_heartbeat() {
329
330		print $sock "HEARTBEAT\n";
331		$response = <$sock>;
332	<	return if (!defined $response);
355	<	chop $response;
356	<	if (!$response eq "OK") {
332	>	if (!$response eq "OK\n") {
333		close($sock);
334		print "Server gave wrong response to HEARTBEAT: $response\n";
335		&tcp_configure();
#	Line 362 | Line 338 | sub send_tcp_heartbeat() {
338
339		print $sock "CONFIG\n";
340		$response = <$sock>;
341	<	return if (!defined $response);
366	<	chop $response;
367	<	if (!$response eq "OK") {
341	>	if (!$response eq "OK\n") {
342		close($sock);
343		print "Server gave wrong response to CONFIG: $response\n";
344		&tcp_configure();
#	Line 373 | Line 347 | sub send_tcp_heartbeat() {
347
348		print $sock "$file_list\n";
349		$response = <$sock>;
350	<	return if (!defined $response);
377	<	chop $response;
378	<	if (!$response eq "OK") {
350	>	if (!$response eq "OK\n") {
351		close($sock);
352		print "Server gave wrong response to file list: $response\n";
353		&tcp_configure();
#	Line 384 | Line 356 | sub send_tcp_heartbeat() {
356
357		print $sock "$last_modified\n";
358		$response = <$sock>;
359	<	return if (!defined $response);
388	<	chop $response;
389	<	if ($response eq "ERROR") {
359	>	if ($response eq "ERROR\n") {
360		close($sock);
361		print "Server configuration changed.  Reconfiguring with filter manager.\n";
362	<	&tcp_configure();
393	<	return;
362	>	$doReconfigure = 1;
363		}
364	<	if (!$response eq "OK") {
364	>	if (!$response eq "OK\n") {
365		close($sock);
366		print "Server gave wrong response to HEARTBEAT: $response\n";
367		&tcp_configure();
#	Line 401 | Line 370 | sub send_tcp_heartbeat() {
370
371		print $sock "ENDHEARTBEAT\n";
372		$response = <$sock>;
373	<	return if (!defined $response);
405	<	chop $response;
406	<	if (!$response eq "OK") {
373	>	if (!$response eq "OK\n") {
374		close($sock);
375		print "Server gave wrong response to ENDHEARTBEAT: $response\n";
376		&tcp_configure();
#	Line 413 | Line 380 | sub send_tcp_heartbeat() {
380		close($sock);
381		print "^";
382
383	+	&tcp_configure() if $doReconfigure;
384	+
385		return;
386		}
387
388	+
389		#-----------------------------------------------------------------------
390		# write_pid
391		# Writes the PID (process ID) of this instance to $pidfile.
#	Line 427 | Line 397 | sub write_pid() {
397		close PID;
398
399		return;
400	+	}
401	+
402	+	#-----------------------------------------------------------------------
403	+	# make_xml
404	+	# Turns an array of plugins data into an XML string.
405	+	#-----------------------------------------------------------------------
406	+	sub make_xml() {
407	+	my($curlevel, $curline) = @_;
408	+	my($xmltemp) = ""; my($curtag) = ""; my($attributes) = "";
409	+	while(1) {
410	+	$curline = shift(@data) if $curline eq ""; chomp $curline;
411	+	if($curline =~ /^$curlevel([^\.\s]+\.)/) {
412	+	$curtag=$1;
413	+	}
414	+	if($curline =~ /^$curlevel$curtag([^\.\s]+)\s+(.*)$/) {
415	+	$xmltemp .= "<$1$attributes>$2</$1>";
416	+	}
417	+	elsif($curline =~ /^$curlevel$curtag(attributes)\.([^\.=]+)=(.*)$/) {
418	+	$attributes .= " $2=\"$3\"";
419	+	}
420	+	else {
421	+	$xmltemp .= &make_xml("$curlevel$curtag", $curline);
422	+	}
423	+	my($nextline) = $data[0]; chomp $nextline if defined $nextline;
424	+	$curtag =~ s/(.*)\./$1/;
425	+	if((defined $nextline) && ($nextline =~ /^$curlevel$curtag\./)) {
426	+	$curline = "";
427	+	}
428	+	else {
429	+	$xmltemp = "<$curtag$attributes>$xmltemp</$curtag>" unless $curtag eq "";
430	+	return $xmltemp;
431	+	}
432	+	}
433		}

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