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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 1.48 by tdb, Sat May 11 17:20:07 2002 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	+	$ostype
37	+	$key
38	+	@data
39		);
40
41		if (@ARGV != 2) {
#	Line 45 | Line 46 | $filter_manager_addr = $ARGV[0];
46		$filter_manager_port = $ARGV[1];
47
48		$seq_no = 1;
49	<	$retry_wait = 600;
49	>	$retry_wait = 60;
50
51	+	# work out our platform, if we can.
52	+	$ostype = `uname -s`;
53	+	chomp $ostype;
54	+	$ostype = "unknown" if not defined $ostype;
55	+
56		# write our PID to a file
57	<	$pidfile = "/var/tmp/ihost.pid";
57	>	# use home dir by default
58	>	#$pidfile = $ENV{"HOME"};
59	>	# or drop it in /var/tmp if we can't find HOME
60	>	$pidfile = "/var/tmp" if not defined $pidfile;
61	>	$pidfile .= "/.ihost.pid";
62		&write_pid();
63
64		&tcp_configure();
65	+	&send_tcp_heartbeat();
66		&send_udp_packet();
67
68		$last_udp_time = time;
#	Line 75 | Line 86 | while (1) {
86		else {
87		$delay = $next_tcp;
88		}
89	<	`sleep $delay`;
89	>	sleep $delay;
90		}
91
92		# we'll probably never get here...
#	Line 90 | Line 101 | exit(0);
101		#-----------------------------------------------------------------------
102		sub wait_then_retry() {
103		print "Will retry configuration with filter manager in $retry_wait seconds.\n";
104	<	`sleep $retry_wait`;
104	>	sleep $retry_wait;
105		}
106
107
#	Line 120 | Line 131 | sub tcp_configure() {
131
132		print $sock "STARTCONFIG\n";
133		$response = <$sock>;
134	<	if (!chop $response eq "OK") {
135	<	print "The i-scream server rejected the STARTCONFIG command.  Terminated.";
134	>	if ($response && !($response eq "OK\n")) {
135	>	print "The i-scream server rejected the STARTCONFIG command.\n";
136		close($sock);
137		wait_then_retry();
138		next;
#	Line 131 | Line 142 | sub tcp_configure() {
142
143		print $sock "LASTMODIFIED\n";
144		$response = <$sock>;
145	<	chop $response;
145	>	if (!$response || $response eq "ERROR\n") {
146	>	print "The i-scream server did not provide the LASTMODIFIED value.\n";
147	>	close($sock);
148	>	wait_then_retry();
149	>	next;
150	>	}
151	>	chomp $response;
152		$last_modified = $response;
153
154		print "Config last modified: ". (scalar localtime $last_modified/1000) . "\n";
155
156		print $sock "FILELIST\n";
157		$response = <$sock>;
158	<	chop $response;
158	>	if (!$response || $response eq "ERROR\n") {
159	>	print "The i-scream server did not provide a configuration file list.\n";
160	>	close($sock);
161	>	wait_then_retry();
162	>	next;
163	>	}
164	>	chomp $response;
165		$file_list = $response;
166
167		print "File list obtained: $file_list\n";
168
169		print $sock "FQDN\n";
170		$response = <$sock>;
171	<	chop $response;
171	>	if (!$response || $response eq "ERROR\n") {
172	>	print "The i-scream server did not tell us our FQDN.\n";
173	>	close($sock);
174	>	wait_then_retry();
175	>	next;
176	>	}
177	>	chomp $response;
178		$fqdn = $response;
179
180		print "FQDN returned: $fqdn\n";
181
182		print $sock "UDPUpdateTime\n";
183		$response = <$sock>;
184	<	chop $response;
184	>	if (!$response || $response eq "ERROR\n") {
185	>	print "The i-scream server did not give us a UDPUpdateTime.\n";
186	>	close($sock);
187	>	wait_then_retry();
188	>	next;
189	>	}
190	>	chomp $response;
191		$udp_update_time = $response;
192
193		print $sock "TCPUpdateTime\n";
194		$response = <$sock>;
195	<	chop $response;
195	>	if (!$response || $response eq "ERROR\n") {
196	>	print "The i-scream server did not give us a TCPUpdateTime.\n";
197	>	close($sock);
198	>	wait_then_retry();
199	>	next;
200	>	}
201	>	chomp $response;
202		$tcp_update_time = $response;
203
204		print "UDP packet period: $udp_update_time seconds.\nTCP heartbeat period: $tcp_update_time seconds.\n";
205
206		print $sock "ENDCONFIG\n";
207		$response = <$sock>;
208	<	chomp $response;
168	<	if (!$response eq "OK") {
208	>	if ($response && !($response eq "OK\n")) {
209		print "ENDCONFIG command to server failed.  Terminated.\n";
210		close($sock);
211		wait_then_retry();
#	Line 176 | Line 216 | sub tcp_configure() {
216
217		print $sock "FILTER\n";
218		$response = <$sock>;
219	<	unless (defined($response)) {
219	>	if (!$response) {
220		print "Failed: Could not get a filter address from the filter manager.\n";
221		close($sock);
222		wait_then_retry();
223		next;
224		}
225	<	chop $response;
186	<	$response =~ /(.*);(.*);(.*)/;
225	>	chomp $response;
226		if ($response eq "ERROR") {
227		print "There are no active configured filters for your host.\n";
228		close($sock);
229		wait_then_retry();
230		next;
231		}
232	+	$response =~ /^(.*);(.*);(.*)/;
233		($filter_addr, $udp_port, $tcp_port) = ($1, $2, $3);
234		unless (defined($filter_addr) && defined($udp_port) && defined($tcp_port)) {
235		print "Failed: Filter address response from server did not make sense: $response\n";
#	Line 202 | Line 242 | sub tcp_configure() {
242
243		print $sock "END\n";
244		$response = <$sock>;
245	<	chop $response;
206	<	if ($response eq "OK") {
245	>	if ($response && ($response eq "OK\n")) {
246		print "Host successfully configured via TCP.\n"
247		}
248		else {
249	<	print "The server failed the host configuration on the END command.";
249	>	print "The server failed the host configuration on the END command.\n";
250		close($sock);
251		wait_then_retry();
252		next;
#	Line 222 | Line 261 | sub tcp_configure() {
261		}
262
263
225	–
226	–
264		#-----------------------------------------------------------------------
265		# send_udp_packet
266		# Sends a UDP packet to an i-scream filter.
#	Line 232 | Line 269 | sub tcp_configure() {
269		#-----------------------------------------------------------------------
270		sub send_udp_packet() {
271
272	<	my(@statgrab) = `./statgrab.pl`;
273	<	my(%packet);
274	<	for (my($i) = 0; $i <= $#statgrab; $i++) {
275	<	$statgrab[$i] =~ /^([^\s]*) (.*)$/;
276	<	$packet{$1} = $2;
272	>	my($plugins_dir) = "plugins";
273	>
274	>	opendir PLUGINS, $plugins_dir;
275	>	my(@plugins) = readdir PLUGINS;
276	>	foreach my $plugin (@plugins) {
277	>	push @data, `$plugins_dir/$plugin $ostype` if -x "$plugins_dir/$plugin" && -f "$plugins_dir/$plugin";
278		}
279
280	+	# get some extra data
281		my($date) = time;
282	+	my($ip);
283	+	$ip = inet_ntoa(scalar(gethostbyname(hostname())) || 'localhost') or $ip = 'localhost';
284
285	<	my($disk_info) = "<disk>";
286	<	my($i) = 0;
287	<	while (defined $packet{"packet.disk.p$i.attributes.mount"}) {
288	<	$disk_info .= "<p$i";
289	<	$disk_info .= " name=\"" . $packet{"packet.disk.p$i.attributes.name"} . "\"";
290	<	$disk_info .= " kbytes=\"" . $packet{"packet.disk.p$i.attributes.kbytes"} . "\"";
291	<	$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;
285	>	# add some extra data to the array
286	>	push(@data, "packet.attributes.seq_no $seq_no");
287	>	push(@data, "packet.attributes.machine_name $fqdn");
288	>	push(@data, "packet.attributes.date $date");
289	>	push(@data, "packet.attributes.type data");
290	>	push(@data, "packet.attributes.ip $ip");
291	>	push(@data, "packet.attributes.key $key");
292
293	<	<packet seq_no="$seq_no" machine_name="$fqdn" date="$date" type="data" ip="$ip">
294	<	<load>
268	<	<load1>$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	<	$disk_info
307	<	</packet>
293	>	# sort the data
294	>	@data = sort(grep(!/^$/, grep(/^packet\./, @data)));
295
296	<	EOF
296	>	# turn the array into some nice XML
297	>	my($xml) = &make_xml("", "");
298
311	–	# Make the packet smaller by stripping out newlines and leading spaces.
312	–	$xml =~ s/\n\s*//g;
313	–
299		my($sock) = new IO::Socket::INET (
300		PeerPort => $udp_port,
301		PeerAddr => $filter_addr,
302		Proto => 'udp'
303		) or die "Could not send UDP: $!\n";
304	<
304	>
305		print $sock $xml or die "Could not send UDP packet: $!\n";
306		close($sock);
307		$seq_no++;
#	Line 326 | Line 311 | EOF
311		}
312
313
329	–
330	–
314		#-----------------------------------------------------------------------
315		# send_tcp_heartbeat
316		# Establishes a TCP connection to an i-scream filter.
317		# The heartbeat is used as a guaranteed "I'm alive" delivery mechanism.
318	+	# If we need to reconfigure, then we complete the heartbeat before
319	+	# doing so.
320		#-----------------------------------------------------------------------
321		sub send_tcp_heartbeat() {
322
323	+	my ($doReconfigure) = 0;
324	+
325		my($sock) = new IO::Socket::INET(
326		PeerAddr => $filter_addr,
327		PeerPort => $tcp_port,
#	Line 351 | Line 338 | sub send_tcp_heartbeat() {
338
339		print $sock "HEARTBEAT\n";
340		$response = <$sock>;
341	<	return if (!defined $response);
355	<	chop $response;
356	<	if (!$response eq "OK") {
341	>	if (!$response eq "OK\n") {
342		close($sock);
343		print "Server gave wrong response to HEARTBEAT: $response\n";
344		&tcp_configure();
#	Line 362 | Line 347 | sub send_tcp_heartbeat() {
347
348		print $sock "CONFIG\n";
349		$response = <$sock>;
350	<	return if (!defined $response);
366	<	chop $response;
367	<	if (!$response eq "OK") {
350	>	if (!$response eq "OK\n") {
351		close($sock);
352		print "Server gave wrong response to CONFIG: $response\n";
353		&tcp_configure();
#	Line 373 | Line 356 | sub send_tcp_heartbeat() {
356
357		print $sock "$file_list\n";
358		$response = <$sock>;
359	<	return if (!defined $response);
377	<	chop $response;
378	<	if (!$response eq "OK") {
359	>	if (!$response eq "OK\n") {
360		close($sock);
361		print "Server gave wrong response to file list: $response\n";
362		&tcp_configure();
#	Line 384 | Line 365 | sub send_tcp_heartbeat() {
365
366		print $sock "$last_modified\n";
367		$response = <$sock>;
368	<	return if (!defined $response);
388	<	chop $response;
389	<	if ($response eq "ERROR") {
368	>	if ($response eq "ERROR\n") {
369		close($sock);
370		print "Server configuration changed.  Reconfiguring with filter manager.\n";
371	<	&tcp_configure();
393	<	return;
371	>	$doReconfigure = 1;
372		}
373	<	if (!$response eq "OK") {
373	>	if (!$response eq "OK\n") {
374		close($sock);
375		print "Server gave wrong response to HEARTBEAT: $response\n";
376		&tcp_configure();
377		return;
378		}
379
380	+	print $sock "KEY\n";
381	+	$key = <$sock>;
382	+
383		print $sock "ENDHEARTBEAT\n";
384		$response = <$sock>;
385	<	return if (!defined $response);
405	<	chop $response;
406	<	if (!$response eq "OK") {
385	>	if (!$response eq "OK\n") {
386		close($sock);
387		print "Server gave wrong response to ENDHEARTBEAT: $response\n";
388		&tcp_configure();
#	Line 413 | Line 392 | sub send_tcp_heartbeat() {
392		close($sock);
393		print "^";
394
395	+	&tcp_configure() if $doReconfigure;
396	+
397		return;
398		}
399
400	+
401		#-----------------------------------------------------------------------
402		# write_pid
403		# Writes the PID (process ID) of this instance to $pidfile.
#	Line 427 | Line 409 | sub write_pid() {
409		close PID;
410
411		return;
412	+	}
413	+
414	+	#-----------------------------------------------------------------------
415	+	# make_xml
416	+	# Turns an array of plugins data into an XML string.
417	+	#-----------------------------------------------------------------------
418	+	sub make_xml() {
419	+	my($curlevel, $curline) = @_;
420	+	my($xmltemp) = ""; my($curtag) = ""; my($attributes) = "";
421	+	while(1) {
422	+	$curline = shift(@data) if $curline eq "";
423	+	return $xmltemp if not defined $curline;
424	+	chomp $curline;
425	+	# dealing with nest (or attributes)
426	+	if($curline =~ /^$curlevel([^\.\s]+\.)/) {
427	+	$curtag=$1;
428	+	if($curline =~ /^$curlevel$curtag([^\.\s]+)\s+(.*)$/) {
429	+	$xmltemp .= &make_xml("$curlevel$curtag", $curline);
430	+	}
431	+	elsif($curline =~ /^$curlevel$curtag(attributes)\.([^\.\s]+)\s+(.*)$/) {
432	+	$attributes .= " $2=\"$3\"";
433	+	}
434	+	else {
435	+	$xmltemp .= &make_xml("$curlevel$curtag", $curline);
436	+	}
437	+	my($nextline) = $data[0]; chomp $nextline if defined $nextline;
438	+	$curtag =~ s/(.*)\./$1/;
439	+	if((defined $nextline) && ($nextline =~ /^$curlevel$curtag\./)) {
440	+	$curline = "";
441	+	}
442	+	else {
443	+	$xmltemp = "<$curtag$attributes>$xmltemp</$curtag>" unless $curtag eq "";
444	+	return $xmltemp;
445	+	}
446	+	}
447	+	# dealing with value
448	+	elsif($curline =~ /^$curlevel([^\.\s]+)\s+(.*)$/) {
449	+	$curtag=$1;
450	+	$xmltemp=$2;
451	+	my($nextline) = $data[0]; chomp $nextline if defined $nextline;
452	+	if(defined $nextline && ($nextline =~ /^$curlevel$curtag\./ || $nextline =~ /^$curlevel$curtag\s+/)) {
453	+	$curline = "";
454	+	}
455	+	else {
456	+	$xmltemp = "<$curtag$attributes>$xmltemp</$curtag>" unless $curtag eq "";
457	+	return $xmltemp;
458	+	}
459	+	}
460	+	# dealing with a null value
461	+	elsif($curline =~ /^$curlevel([^\.\s]+)$/) {
462	+	# simply adding a space makes the above elsif deal with it :)
463	+	# just level with an empty tag in the XML
464	+	$curline .= " ";
465	+	}
466	+	# failing all that, skip the line
467	+	else {
468	+	$curline = "";
469	+	}
470	+	}
471		}

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