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Comparing projects/cms/source/host/ihost-perl/ihost.pl (file contents):
Revision 1.26 by tdb, Mon Mar 12 23:51:15 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 34 | Line 32 | use vars qw (
32		$file_list
33		$fqdn
34		$pidfile
35	+	$retry_wait
36	+	@statgrab
37		);
38
39		if (@ARGV != 2) {
#	Line 44 | Line 44 | $filter_manager_addr = $ARGV[0];
44		$filter_manager_port = $ARGV[1];
45
46		$seq_no = 1;
47	+	$retry_wait = 60;
48
49		# write our PID to a file
50		$pidfile = "/var/tmp/ihost.pid";
#	Line 73 | 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 82 | Line 83 | exit(0);
83
84
85		#-----------------------------------------------------------------------
86	+	# wait_then_retry
87	+	# Waits for the period of time specified in $retry_wait, then attempts
88	+	# to reconfigure with the server.
89	+	#-----------------------------------------------------------------------
90	+	sub wait_then_retry() {
91	+	print "Will retry configuration with filter manager in $retry_wait seconds.\n";
92	+	sleep $retry_wait;
93	+	}
94	+
95	+
96	+	#-----------------------------------------------------------------------
97		# tcp_configure
98		# Establishes a TCP connection to the specified i-scream filter manager.
99		# The host then requests details from the server, such as the intervals
#	Line 89 | Line 101 | exit(0);
101		#-----------------------------------------------------------------------
102		sub tcp_configure() {
103
104	<	my($sock) = new IO::Socket::INET(
105	<	PeerAddr => $filter_manager_addr,
106	<	PeerPort => $filter_manager_port,
107	<	Proto => 'tcp'
108	<	) or die "Cannot connect!";
109	<	if (!defined $sock) {
110	<	print "IHOST ERROR: Could not connect to $filter_manager_addr:$filter_manager_port.\n";
111	<	print "Please check that there is an i-scream server at this address.\n";
112	<	print "Program ended.\n";
113	<	exit(1);
114	<	}
104	>	while (1) {
105	>	my($sock) = new IO::Socket::INET(
106	>	PeerAddr => $filter_manager_addr,
107	>	PeerPort => $filter_manager_port,
108	>	Proto => 'tcp'
109	>	) or die "Cannot connect!";
110	>	if (!defined $sock) {
111	>	print "IHOST ERROR: Could not connect to $filter_manager_addr:$filter_manager_port.\n";
112	>	print "Please check that there is an i-scream server at this address.\n";
113	>	wait_then_retry();
114	>	next;
115	>	}
116
117	<	# Now run through the configuration process...
118	<	my($response);
117	>	# Now run through the configuration process...
118	>	my($response);
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.";
124	<	exit(1);
125	<	}
120	>	print $sock "STARTCONFIG\n";
121	>	$response = <$sock>;
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;
127	>	}
128
129	<	print "Config started okay.\n";
129	>	print "Config started okay.\n";
130
131	<	print $sock "LASTMODIFIED\n";
132	<	$response = <$sock>;
133	<	chop $response;
134	<	$last_modified = $response;
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
142	<	print "Config last modified: ". (scalar localtime $last_modified/1000) . "\n";
142	>	print "Config last modified: ". (scalar localtime $last_modified/1000) . "\n";
143
144	<	print $sock "FILELIST\n";
145	<	$response = <$sock>;
146	<	chop $response;
147	<	$file_list = $response;
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
155	<	print "File list obtained: $file_list\n";
155	>	print "File list obtained: $file_list\n";
156
157	<	print $sock "FQDN\n";
158	<	$response = <$sock>;
159	<	chop $response;
160	<	$fqdn = $response;
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
168	<	print "FQDN returned: $fqdn\n";
168	>	print "FQDN returned: $fqdn\n";
169
170	<	print $sock "UDPUpdateTime\n";
171	<	$response = <$sock>;
172	<	chop $response;
173	<	$udp_update_time = $response;
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	<	chop $response;
184	<	$tcp_update_time = $response;
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
192	<	print "UDP packet period: $udp_update_time seconds.\nTCP heartbeat period: $tcp_update_time seconds.\n";
192	>	print "UDP packet period: $udp_update_time seconds.\nTCP heartbeat period: $tcp_update_time seconds.\n";
193
194	<	print $sock "ENDCONFIG\n";
195	<	$response = <$sock>;
196	<	chomp $response;
197	<	if (!$response eq "OK") {
198	<	print "ENDCONFIG command to server failed.  Terminated.\n";
199	<	exit(1);
200	<	}
194	>	print $sock "ENDCONFIG\n";
195	>	$response = <$sock>;
196	>	if ($response && !($response eq "OK\n")) {
197	>	print "ENDCONFIG command to server failed.  Terminated.\n";
198	>	close($sock);
199	>	wait_then_retry();
200	>	next;
201	>	}
202
203	<	print "Config ended.\n";
203	>	print "Config ended.\n";
204
205	<	print $sock "FILTER\n";
206	<	$response = <$sock>;
207	<	unless (defined($response)) {
208	<	print "Failed: Could not get a filter address from the filter manager.\n";
209	<	exit(1);
210	<	}
211	<	chop $response;
212	<	$response =~ /(.*);(.*);(.*)/;
213	<	($filter_addr, $udp_port, $tcp_port) = ($1, $2, $3);
214	<	unless (defined($filter_addr) && defined($udp_port) && defined($tcp_port)) {
215	<	print "Failed: Filter address response from server did not make sense: $response\n";
216	<	exit(1);
217	<	}
205	>	print $sock "FILTER\n";
206	>	$response = <$sock>;
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	>	$response =~ /^(.*);(.*);(.*)/;
215	>	if ($response eq "ERROR") {
216	>	print "There are no active configured filters for your host.\n";
217	>	close($sock);
218	>	wait_then_retry();
219	>	next;
220	>	}
221	>	($filter_addr, $udp_port, $tcp_port) = ($1, $2, $3);
222	>	unless (defined($filter_addr) && defined($udp_port) && defined($tcp_port)) {
223	>	print "Failed: Filter address response from server did not make sense: $response\n";
224	>	close($sock);
225	>	wait_then_retry();
226	>	next;
227	>	}
228
229	<	print "Got filter data ($filter_addr, $udp_port, $tcp_port)\n";
229	>	print "Got filter data ($filter_addr, $udp_port, $tcp_port)\n";
230
231	<	print $sock "END\n";
232	<	$response = <$sock>;
233	<	chop $response;
234	<	if ($response eq "OK") {
235	<	print "Host successfully configured via TCP.\n"
236	<	}
237	<	else {
238	<	print "The server failed the host configuration on the END command.";
239	<	exit(1);
240	<	}
231	>	print $sock "END\n";
232	>	$response = <$sock>;
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.\n";
238	>	close($sock);
239	>	wait_then_retry();
240	>	next;
241	>	}
242
243	<	close($sock);
243	>	close($sock);
244
245	<	print "Configuration finished sucessfully!\n";
246	<
245	>	print "Configuration finished sucessfully!\n";
246	>	last;
247	>	}
248		return;
249		}
250
251
194	–
195	–
252		#-----------------------------------------------------------------------
253		# send_udp_packet
254		# Sends a UDP packet to an i-scream filter.
#	Line 201 | Line 257 | sub tcp_configure() {
257		#-----------------------------------------------------------------------
258		sub send_udp_packet() {
259
260	<	my(@statgrab) = `./statgrab.pl`;
205	<	my(%packet);
206	<	for (my($i) = 0; $i <= $#statgrab; $i++) {
207	<	$statgrab[$i] =~ /^([^\s]*) (.*)$/;
208	<	$packet{$1} = $2;
209	<	}
260	>	@statgrab = `./statgrab.pl`;
261
262	+	# get some extra data
263		my($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"} . "\"";
219	<	$disk_info .= " used=\"" . $packet{"packet.disk.p$i.attributes.used"} . "\"";
220	<	$disk_info .= " avail=\"" . $packet{"packet.disk.p$i.attributes.avail"} . "\"";
221	<	$disk_info .= " mount=\"" . $packet{"packet.disk.p$i.attributes.mount"} . "\"";
222	<	$disk_info .= "></p$i>";
223	<	++$i;
224	<	}
225	<	$disk_info .= "</disk>";
226	<
227	<	my($ip) = inet_ntoa(scalar(gethostbyname(hostname())) || 'localhost');
228	<
229	<	# Build the XML packet this way, as we can clearly
230	<	# see the structure and contents... I like this ;-)
231	<	# [Note that the server rejects UDP packets that are
232	<	# larger than 8196 bytes]
233	<	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>
238	<	<load5>$packet{"packet.load.load5"}</load5>
239	<	<load15>$packet{"packet.load.load15"}</load15>
240	<	</load>
241	<	<os>
242	<	<name>$packet{"packet.os.name"}</name>
243	<	<release>$packet{"packet.os.release"}</release>
244	<	<platform>$packet{"packet.os.platform"}</platform>
245	<	<sysname>$packet{"packet.os.sysname"}</sysname>
246	<	<version>$packet{"packet.os.version"}</version>
247	<	<uptime>$packet{"packet.os.uptime"}</uptime>
248	<	</os>
249	<	<users>
250	<	<count>$packet{"packet.users.count"}</count>
251	<	<list>$packet{"packet.users.list"}</list>
252	<	</users>
253	<	<processes>
254	<	<total>$packet{"packet.processes.total"}</total>
255	<	<sleeping>$packet{"packet.processes.sleeping"}</sleeping>
256	<	<zombie>$packet{"packet.processes.zombie"}</zombie>
257	<	<stopped>$packet{"packet.processes.stopped"}</stopped>
258	<	<cpu>$packet{"packet.processes.cpu"}</cpu>
259	<	</processes>
260	<	<cpu>
261	<	<idle>$packet{"packet.cpu.idle"}</idle>
262	<	<user>$packet{"packet.cpu.user"}</user>
263	<	<kernel>$packet{"packet.cpu.kernel"}</kernel>
264	<	<iowait>$packet{"packet.cpu.iowait"}</iowait>
265	<	<swap>$packet{"packet.cpu.swap"}</swap>
266	<	</cpu>
267	<	<memory>
268	<	<total>$packet{"packet.memory.total"}</total>
269	<	<free>$packet{"packet.memory.free"}</free>
270	<	</memory>
271	<	<swap>
272	<	<total>$packet{"packet.swap.total"}</total>
273	<	<free>$packet{"packet.swap.free"}</free>
274	<	</swap>
275	<	$disk_info
276	<	</packet>
277	<
278	<	EOF
279	<
280	<	# Make the packet smaller by stripping out newlines and leading spaces.
281	<	$xml =~ s/\n\s*//g;
282	<
274	>	# turn the array into some nice XML
275	>	my($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		$seq_no++;
#	Line 295 | Line 289 | EOF
289		}
290
291
298	–
299	–
292		#-----------------------------------------------------------------------
293		# send_tcp_heartbeat
294		# Establishes a TCP connection to an i-scream filter.
295		# The heartbeat is used as a guaranteed "I'm alive" delivery mechanism.
296	+	# If we need to reconfigure, then we complete the heartbeat before
297	+	# doing so.
298		#-----------------------------------------------------------------------
299		sub send_tcp_heartbeat() {
300
301	+	my ($doReconfigure) = 0;
302	+
303		my($sock) = new IO::Socket::INET(
304		PeerAddr => $filter_addr,
305		PeerPort => $tcp_port,
#	Line 311 | Line 307 | sub send_tcp_heartbeat() {
307		) or return;
308		if (!defined $sock) {
309		print "IHOST WARNING: Failed to deliver a heartbeat to the i-scream filter.\n";
310	+	&tcp_configure();
311		return;
312		}
313
#	Line 319 | Line 316 | sub send_tcp_heartbeat() {
316
317		print $sock "HEARTBEAT\n";
318		$response = <$sock>;
319	<	return if (!defined $response);
323	<	chop $response;
324	<	if (!$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();
323		return;
324		}
325
326		print $sock "CONFIG\n";
327		$response = <$sock>;
328	<	return if (!defined $response);
333	<	chop $response;
334	<	if (!$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();
332		return;
333		}
334
335		print $sock "$file_list\n";
336		$response = <$sock>;
337	<	return if (!defined $response);
343	<	chop $response;
344	<	if (!$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();
341		return;
342		}
343
344		print $sock "$last_modified\n";
345		$response = <$sock>;
346	<	return if (!defined $response);
353	<	chop $response;
354	<	if ($response eq "ERROR") {
346	>	if ($response eq "ERROR\n") {
347		close($sock);
348	<	&tcp_configure();
349	<	return;
348	>	print "Server configuration changed.  Reconfiguring with filter manager.\n";
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();
355		return;
356		}
357
358		print $sock "ENDHEARTBEAT\n";
359		$response = <$sock>;
360	<	return if (!defined $response);
368	<	chop $response;
369	<	if (!$response eq "OK") {
360	>	if (!$response eq "OK\n") {
361		close($sock);
362		print "Server gave wrong response to ENDHEARTBEAT: $response\n";
363	+	&tcp_configure();
364		return;
365		}
366
367		close($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 $pidfile.
#	Line 389 | Line 384 | sub write_pid() {
384		close PID;
385
386		return;
387	+	}
388	+
389	+	#-----------------------------------------------------------------------
390	+	# make_xml
391	+	# Turns an array of statgrab data into an XML string.
392	+	#-----------------------------------------------------------------------
393	+	sub make_xml() {
394	+	my($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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