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root/i-scream/projects/cms/source/host/ihost-perl/ihost.pl

Comparing projects/cms/source/host/ihost-perl/ihost.pl (file contents):
Revision 1.19 by tdb, Wed Feb 28 10:52:16 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 33 | Line 31 | use vars qw (
31		$filter_addr
32		$file_list
33		$fqdn
34	+	$pidfile
35	+	$retry_wait
36	+	@statgrab
37		);
38
39		if (@ARGV != 2) {
#	Line 43 | 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";
51	+	&write_pid();
52	+
53		&tcp_configure();
54		&send_udp_packet();
55
#	Line 68 | 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...
81	+	`rm -f $pidfile`;
82		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 $retry_wait;
93	+	}
94	+
95	+
96	+	#-----------------------------------------------------------------------
97		# tcp_configure
98		# Establishes a TCP connection to the specified i-scream filter manager.
99		# The host then requests details from the server, such as the intervals
#	Line 82 | Line 101 | exit(0);
101		#-----------------------------------------------------------------------
102		sub tcp_configure() {
103
104	<	my($sock) = new IO::Socket::INET(
105	<	PeerAddr => $filter_manager_addr,
106	<	PeerPort => $filter_manager_port,
107	<	Proto => 'tcp'
108	<	);
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	<	chop $response;
208	<	$response =~ /(.*);(.*);(.*)/;
209	<	($filter_addr, $udp_port, $tcp_port) = ($1, $2, $3);
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($sock);
244
245	<	print "Configuration finished sucessfully!\n";
246	<
245	>	print "Configuration finished sucessfully!\n";
246	>	last;
247	>	}
248		return;
249		}
250
251
179	–
180	–
252		#-----------------------------------------------------------------------
253		# send_udp_packet
254		# Sends a UDP packet to an i-scream filter.
#	Line 186 | Line 257 | sub tcp_configure() {
257		#-----------------------------------------------------------------------
258		sub send_udp_packet() {
259
260	<	my(@statgrab) = `./statgrab.pl`;
190	<	my(%packet);
191	<	for (my($i) = 0; $i <= $#statgrab; $i++) {
192	<	$statgrab[$i] =~ /^([^\s]*) (.*)$/;
193	<	$packet{$1} = $2;
194	<	}
260	>	@statgrab = `./statgrab.pl`;
261
262	+	# get some extra data
263		my($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"} . "\"";
204	<	$disk_info .= " used=\"" . $packet{"packet.disk.p$i.attributes.used"} . "\"";
205	<	$disk_info .= " avail=\"" . $packet{"packet.disk.p$i.attributes.avail"} . "\"";
206	<	$disk_info .= " mount=\"" . $packet{"packet.disk.p$i.attributes.mount"} . "\"";
207	<	$disk_info .= "></p$i>";
208	<	++$i;
209	<	}
210	<	$disk_info .= "</disk>";
211	<
212	<	my($ip) = inet_ntoa(scalar(gethostbyname(hostname())) || 'localhost');
213	<
214	<	# Build the XML packet this way, as we can clearly
215	<	# see the structure and contents... I like this ;-)
216	<	# [Note that the server rejects UDP packets that are
217	<	# larger than 8196 bytes]
218	<	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="$ip">
275	<	<load>
222	<	<load1>$packet{"packet.load.load1"}</load1>
223	<	<load5>$packet{"packet.load.load5"}</load5>
224	<	<load15>$packet{"packet.load.load15"}</load15>
225	<	</load>
226	<	<os>
227	<	<name>$packet{"packet.os.name"}</name>
228	<	<release>$packet{"packet.os.release"}</release>
229	<	<platform>$packet{"packet.os.platform"}</platform>
230	<	<sysname>$packet{"packet.os.sysname"}</sysname>
231	<	<version>$packet{"packet.os.version"}</version>
232	<	<uptime>$packet{"packet.os.uptime"}</uptime>
233	<	</os>
234	<	<users>
235	<	<count>$packet{"packet.users.count"}</count>
236	<	<list>$packet{"packet.users.list"}</list>
237	<	</users>
238	<	<processes>
239	<	<total>$packet{"packet.processes.total"}</total>
240	<	<sleeping>$packet{"packet.processes.sleeping"}</sleeping>
241	<	<zombie>$packet{"packet.processes.zombie"}</zombie>
242	<	<stopped>$packet{"packet.processes.stopped"}</stopped>
243	<	<cpu>$packet{"packet.processes.cpu"}</cpu>
244	<	</processes>
245	<	<cpu>
246	<	<idle>$packet{"packet.cpu.idle"}</idle>
247	<	<user>$packet{"packet.cpu.user"}</user>
248	<	<kernel>$packet{"packet.cpu.kernel"}</kernel>
249	<	<iowait>$packet{"packet.cpu.iowait"}</iowait>
250	<	<swap>$packet{"packet.cpu.swap"}</swap>
251	<	</cpu>
252	<	<memory>
253	<	<total>$packet{"packet.memory.total"}</total>
254	<	<free>$packet{"packet.memory.free"}</free>
255	<	</memory>
256	<	<swap>
257	<	<total>$packet{"packet.swap.total"}</total>
258	<	<free>$packet{"packet.swap.free"}</free>
259	<	</swap>
260	<	$disk_info
261	<	</packet>
262	<
263	<	EOF
264	<
265	<	# Make the packet smaller by stripping out newlines and leading spaces.
266	<	$xml =~ s/\n\s*//g;
267	<
268	<	print $xml;
274	>	# turn the array into some nice XML
275	>	my($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 "Socket: $!\n";
282	<
281	>	) or die "Could not send UDP: $!\n";
282	>
283		print $sock $xml or die "Could not send UDP packet: $!\n";
284		close($sock);
285		$seq_no++;
#	Line 282 | Line 289 | print $xml;
289		}
290
291
285	–
286	–
292		#-----------------------------------------------------------------------
293		# send_tcp_heartbeat
294		# Establishes a TCP connection to an i-scream filter.
295		# The heartbeat is used as a guaranteed "I'm alive" delivery mechanism.
296	+	# If we need to reconfigure, then we complete the heartbeat before
297	+	# doing so.
298		#-----------------------------------------------------------------------
299		sub send_tcp_heartbeat() {
300
301	+	my ($doReconfigure) = 0;
302	+
303		my($sock) = new IO::Socket::INET(
304		PeerAddr => $filter_addr,
305		PeerPort => $tcp_port,
306		Proto => 'tcp'
307	<	);
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 306 | Line 316 | sub send_tcp_heartbeat() {
316
317		print $sock "HEARTBEAT\n";
318		$response = <$sock>;
319	<	chop $response;
310	<	if (!$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	<	chop $response;
319	<	if (!$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	<	chop $response;
328	<	if (!$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	<	chop $response;
337	<	if ($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	<	chop $response;
351	<	if (!$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 $pidfile.
379	+	# This is then used by a seperate script to check (and restart) ihost.
380	+	#-----------------------------------------------------------------------
381	+	sub write_pid() {
382	+	open PID, ">$pidfile";
383	+	print 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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