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Comparing projects/cms/source/host/ihost-perl/ihost.pl (file contents):
Revision 1.10 by tdb, Thu Feb 1 03:17:32 2001 UTC vs.
Revision 1.40 by tdb, Mon Nov 19 22:31:18 2001 UTC

#	Line 2 | Line 2
2
3		# -----------------------------------------------------------
4		# Perl i-scream Host.
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
8	<	# methods as you see fit.
9	<	#  - pjm2@ukc.ac.uk
8	>	# a typical Unix/Linux box.
9		#
10		# $Author$
11		# $Id$
#	Line 31 | Line 30 | use vars qw (
30		$tcp_port
31		$filter_addr
32		$file_list
33	+	$fqdn
34	+	$pidfile
35	+	$retry_wait
36	+	@data
37		);
38
39		if (@ARGV != 2) {
#	Line 41 | 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 66 | 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 $retry_wait;
93	+	}
94	+
95	+
96	+	#-----------------------------------------------------------------------
97	+	# tcp_configure
98	+	# Establishes a TCP connection to the specified i-scream filter manager.
99	+	# The host then requests details from the server, such as the intervals
100	+	# at which to send UDP packets.
101	+	#-----------------------------------------------------------------------
102		sub tcp_configure() {
103
104	<	my($sock) = new IO::Socket::INET(
105	<	PeerAddr => $filter_manager_addr,
106	<	PeerPort => $filter_manager_port,
107	<	Proto => 'tcp'
108	<	) or die "Could not perform configuration via TCP: $!\n";
104	>	while (1) {
105	>	my($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	<	die "Could not connect to the i-scream filter manager: $!\n" unless $sock;
118	<
84	<	# Now run through the configuration process.
85	<	my($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 "UDPUpdateTime\n";
158	<	$response = <$sock>;
159	<	chop $response;
160	<	$udp_update_time = $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 $sock "TCPUpdateTime\n";
169	<	$response = <$sock>;
170	<	chop $response;
171	<	$tcp_update_time = $response;
168	>	print "FQDN returned: $fqdn\n";
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
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($sock);
244
245	<	print "Configuration finished sucessfully!\n";
245	>	print "Configuration finished sucessfully!\n";
246	>	last;
247	>	}
248	>	return;
249		}
250
251	+
252	+	#-----------------------------------------------------------------------
253	+	# send_udp_packet
254	+	# Sends a UDP packet to an i-scream filter.
255	+	# The packet contains XML markup describing some of the machine's state.
256	+	# Receipt of UDP packets is not guaranteed.
257	+	#-----------------------------------------------------------------------
258		sub send_udp_packet() {
259
260	<	my(@statgrab) = `./statgrab.pl`;
261	<	my(%packet);
262	<	for (my($i) = 0; $i < $#statgrab; $i++) {
263	<	$statgrab[$i] =~ /^([^\s]*) (.*)$/;
264	<	$packet{$1} = $2;
260	>	my($plugins_dir) = "plugins";
261	>
262	>	opendir PLUGINS, $plugins_dir;
263	>	my(@plugins) = readdir PLUGINS;
264	>	foreach my $plugin (@plugins) {
265	>	push @data, `$plugins_dir/$plugin` if -x "$plugins_dir/$plugin" && -f "$plugins_dir/$plugin";
266		}
267
268	+	# get some extra data
269		my($date) = time;
270	+	my($ip);
271	+	$ip = inet_ntoa(scalar(gethostbyname(hostname())) || 'localhost') or $ip = 'localhost';
272
273	<	my($disk_info) = "<disk>";
274	<	my($i) = 0;
275	<	while (defined $packet{"packet.disk.p$i.attributes.mount"}) {
276	<	$disk_info .= "<p$i>";
277	<	$disk_info .= qq/<name>$packet{"packet.disk.p$i.attributes.name"}<\/name>/;
278	<	$disk_info .= qq/<kbytes>$packet{"packet.disk.p$i.attributes.kbytes"}<\/kbytes>/;
173	<	$disk_info .= qq/<used>$packet{"packet.disk.p$i.attributes.used"}<\/used>/;
174	<	$disk_info .= qq/<avail>$packet{"packet.disk.p$i.attributes.avail"}<\/avail>/;
175	<	$disk_info .= qq/<mount>$packet{"packet.disk.p$i.attributes.mount"}<\/mount>/;
176	<	$disk_info .= "</p$i>";
177	<	++$i;
178	<	}
179	<	$disk_info .= "</disk>";
180	<
181	<	my($hostname) = hostname();
182	<	$hostname =~ s/\..*$//g;
183	<	`cat /etc/resolv.conf` =~ /domain\s+([^\s]+)/;
184	<	my($domainname) = $1;
185	<	my($machine_name) = "$hostname.$domainname";
186	<	my($ip) = inet_ntoa(scalar(gethostbyname($hostname)) || 'localhost');
187	<
188	<	# Build the XML packet this way, as we can clearly
189	<	# see the structure and contents... I like this ;-)
190	<	my($xml) = <<EOF;
273	>	# add some extra data to the array
274	>	push(@data, "packet.attributes.seq_no=$seq_no");
275	>	push(@data, "packet.attributes.machine_name=$fqdn");
276	>	push(@data, "packet.attributes.date=$date");
277	>	push(@data, "packet.attributes.type=data");
278	>	push(@data, "packet.attributes.ip=$ip");
279
280	<	<packet seq_no="$seq_no" machine_name="$machine_name" date="$date" type="data" ip="$ip">
281	<	<load>
194	<	<load1>$packet{"packet.load.load1"}</load1>
195	<	<load5>$packet{"packet.load.load5"}</load5>
196	<	<load15>$packet{"packet.load.load15"}</load15>
197	<	</load>
198	<	<os>
199	<	<name>$packet{"packet.os.name"}</name>
200	<	<release>$packet{"packet.os.release"}</release>
201	<	<platform>$packet{"packet.os.platform"}</platform>
202	<	<sysname>$packet{"packet.os.sysname"}</sysname>
203	<	<version>$packet{"packet.os.version"}</version>
204	<	<uptime>$packet{"packet.os.uptime"}</uptime>
205	<	</os>
206	<	<users>
207	<	<count>$packet{"packet.users.count"}</count>
208	<	<list>$packet{"packet.users.list"}</list>
209	<	</users>
210	<	<processes>
211	<	<total>$packet{"packet.processes.total"}</total>
212	<	<sleeping>$packet{"packet.processes.sleeping"}</sleeping>
213	<	<zombie>$packet{"packet.processes.zombie"}</zombie>
214	<	<stopped>$packet{"packet.processes.stopped"}</stopped>
215	<	<cpu>$packet{"packet.processes.cpu"}</cpu>
216	<	</processes>
217	<	<cpu>
218	<	<idle>$packet{"packet.cpu.idle"}</idle>
219	<	<user>$packet{"packet.cpu.user"}</user>
220	<	<kernel>$packet{"packet.cpu.kernel"}</kernel>
221	<	<iowait>$packet{"packet.cpu.iowait"}</iowait>
222	<	<swap>$packet{"packet.cpu.swap"}</swap>
223	<	</cpu>
224	<	<memory>
225	<	<total>$packet{"packet.memory.real"}</total>
226	<	<free>$packet{"packet.memory.free"}</free>
227	<	</memory>
228	<	<swap>
229	<	<total>$packet{"packet.memory.swap_total"}</total>
230	<	<free>$packet{"packet.memory.swap_free"}</free>
231	<	</swap>
232	<	$disk_info
233	<	</packet>
234	<
235	<	EOF
236	<
237	<	$xml =~ s/\n\s*//g;
280	>	# sort the data
281	>	@data = sort(@data);
282
283	+	# turn the array into some nice XML
284	+	my($xml) = &make_xml("", "");
285	+
286		my($sock) = new IO::Socket::INET (
287		PeerPort => $udp_port,
288		PeerAddr => $filter_addr,
289		Proto => 'udp'
290	<	) or die "Socket: $!\n";
291	<
290	>	) or die "Could not send UDP: $!\n";
291	>
292		print $sock $xml or die "Could not send UDP packet: $!\n";
293		close($sock);
294		$seq_no++;
295		print "-";
296	+
297	+	return;
298		}
299
300	+
301	+	#-----------------------------------------------------------------------
302	+	# send_tcp_heartbeat
303	+	# Establishes a TCP connection to an i-scream filter.
304	+	# The heartbeat is used as a guaranteed "I'm alive" delivery mechanism.
305	+	# If we need to reconfigure, then we complete the heartbeat before
306	+	# doing so.
307	+	#-----------------------------------------------------------------------
308		sub send_tcp_heartbeat() {
309
310	+	my ($doReconfigure) = 0;
311	+
312		my($sock) = new IO::Socket::INET(
313		PeerAddr => $filter_addr,
314		PeerPort => $tcp_port,
315		Proto => 'tcp'
316	<	) or die "Could not perform heartbeat via TCP: $!\n";
316	>	) or return;
317	>	if (!defined $sock) {
318	>	print "IHOST WARNING: Failed to deliver a heartbeat to the i-scream filter.\n";
319	>	&tcp_configure();
320	>	return;
321	>	}
322
259	–	die "Could not connect to the i-scream filter: $!\n" unless $sock;
260	–
323		# Now run through the configuration process.
324		my($response);
325
326		print $sock "HEARTBEAT\n";
327		$response = <$sock>;
328	<	chop $response;
267	<	if (!$response eq "OK") {
328	>	if (!$response eq "OK\n") {
329		close($sock);
330		print "Server gave wrong response to HEARTBEAT: $response\n";
331	+	&tcp_configure();
332		return;
333		}
334
335		print $sock "CONFIG\n";
336		$response = <$sock>;
337	<	chop $response;
276	<	if (!$response eq "OK") {
337	>	if (!$response eq "OK\n") {
338		close($sock);
339		print "Server gave wrong response to CONFIG: $response\n";
340	+	&tcp_configure();
341		return;
342		}
343
344		print $sock "$file_list\n";
345		$response = <$sock>;
346	<	chop $response;
285	<	if (!$response eq "OK") {
346	>	if (!$response eq "OK\n") {
347		close($sock);
348		print "Server gave wrong response to file list: $response\n";
349	+	&tcp_configure();
350		return;
351		}
352
353		print $sock "$last_modified\n";
354		$response = <$sock>;
355	<	chop $response;
294	<	if ($response eq "ERROR") {
355	>	if ($response eq "ERROR\n") {
356		close($sock);
357	<	&tcp_configure();
358	<	return;
357	>	print "Server configuration changed.  Reconfiguring with filter manager.\n";
358	>	$doReconfigure = 1;
359		}
360	<	if (!$response eq "OK") {
360	>	if (!$response eq "OK\n") {
361		close($sock);
362		print "Server gave wrong response to HEARTBEAT: $response\n";
363	+	&tcp_configure();
364		return;
365		}
366
367		print $sock "ENDHEARTBEAT\n";
368		$response = <$sock>;
369	<	chop $response;
308	<	if (!$response eq "OK") {
369	>	if (!$response eq "OK\n") {
370		close($sock);
371		print "Server gave wrong response to ENDHEARTBEAT: $response\n";
372	+	&tcp_configure();
373		return;
374		}
375
376		close($sock);
377		print "^";
378	+
379	+	&tcp_configure() if $doReconfigure;
380	+
381	+	return;
382	+	}
383	+
384	+
385	+	#-----------------------------------------------------------------------
386	+	# write_pid
387	+	# Writes the PID (process ID) of this instance to $pidfile.
388	+	# This is then used by a seperate script to check (and restart) ihost.
389	+	#-----------------------------------------------------------------------
390	+	sub write_pid() {
391	+	open PID, ">$pidfile";
392	+	print PID $$;
393	+	close PID;
394	+
395	+	return;
396	+	}
397	+
398	+	#-----------------------------------------------------------------------
399	+	# make_xml
400	+	# Turns an array of plugins data into an XML string.
401	+	#-----------------------------------------------------------------------
402	+	sub make_xml() {
403	+	my($curlevel, $curline) = @_;
404	+	my($xmltemp) = ""; my($curtag) = ""; my($attributes) = "";
405	+	while(1) {
406	+	$curline = shift(@data) if $curline eq ""; chomp $curline;
407	+	if($curline =~ /^$curlevel([^\.\s]+\.)/) {
408	+	$curtag=$1;
409	+	}
410	+	if($curline =~ /^$curlevel$curtag([^\.\s]+)\s+(.*)$/) {
411	+	$xmltemp .= "<$1$attributes>$2</$1>";
412	+	}
413	+	elsif($curline =~ /^$curlevel$curtag(attributes)\.([^\.=]+)=(.*)$/) {
414	+	$attributes .= " $2=\"$3\"";
415	+	}
416	+	else {
417	+	$xmltemp .= &make_xml("$curlevel$curtag", $curline);
418	+	}
419	+	my($nextline) = $data[0]; chomp $nextline if defined $nextline;
420	+	$curtag =~ s/(.*)\./$1/;
421	+	if((defined $nextline) && ($nextline =~ /^$curlevel$curtag\./)) {
422	+	$curline = "";
423	+	}
424	+	else {
425	+	$xmltemp = "<$curtag$attributes>$xmltemp</$curtag>" unless $curtag eq "";
426	+	return $xmltemp;
427	+	}
428	+	}
429		}

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