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Comparing projects/cms/source/host/ihost-perl/ihost.pl (file contents):
Revision 1.35 by tdb, Wed Nov 14 14:17:12 2001 UTC vs.
Revision 1.50 by tdb, Tue May 21 16:47:11 2002 UTC

# Line 1 | Line 1
1   #!/usr/bin/perl -w
2  
3 + #
4 + # i-scream central monitoring system
5 + # http://www.i-scream.org.uk
6 + # Copyright (C) 2000-2002 i-scream
7 + #
8 + # This program is free software; you can redistribute it and/or
9 + # modify it under the terms of the GNU General Public License
10 + # as published by the Free Software Foundation; either version 2
11 + # of the License, or (at your option) any later version.
12 + #
13 + # This program is distributed in the hope that it will be useful,
14 + # but WITHOUT ANY WARRANTY; without even the implied warranty of
15 + # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
16 + # GNU General Public License for more details.
17 + #
18 + # You should have received a copy of the GNU General Public License
19 + # along with this program; if not, write to the Free Software
20 + # Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
21 + #
22 +
23   # -----------------------------------------------------------
24   # Perl i-scream Host.
25   # http://www.i-scream.org.uk
26   #
27   # An all-in-one script to act as an i-scream host on
28 < # a typical Unix/Linux box.  You may adapt the data-gathering
9 < # methods as you see fit.
10 < #  - pjm2@ukc.ac.uk
28 > # a typical Unix/Linux box.
29   #
30   # $Author$
31   # $Id$
# Line 35 | Line 53 | use vars qw (
53               $fqdn
54               $pidfile
55               $retry_wait
56 +             $ostype
57 +             $key
58 +             @data
59              );
60  
61   if (@ARGV != 2) {
# Line 47 | Line 68 | $filter_manager_port = $ARGV[1];
68   $seq_no = 1;
69   $retry_wait = 60;
70  
71 + # work out our platform, if we can.
72 + $ostype = `uname -s`;
73 + chomp $ostype;
74 + $ostype = "unknown" if not defined $ostype;
75 +
76   # write our PID to a file
77 < $pidfile = "/var/tmp/ihost.pid";
77 > # use home dir by default
78 > #$pidfile = $ENV{"HOME"};
79 > # or drop it in /var/tmp if we can't find HOME
80 > $pidfile = "/var/tmp" if not defined $pidfile;
81 > $pidfile .= "/.ihost.pid";
82   &write_pid();
83  
84   &tcp_configure();
85 + &send_tcp_heartbeat();
86   &send_udp_packet();
87  
88   $last_udp_time = time;
# Line 131 | Line 162 | sub tcp_configure() {
162      
163          print $sock "LASTMODIFIED\n";
164          $response = <$sock>;
165 <        if (!$response) {
166 <            print "The i-scream server did not return anything for the LASTMODIFIED command.\n";
165 >        if (!$response || $response eq "ERROR\n") {
166 >            print "The i-scream server did not provide the LASTMODIFIED value.\n";
167              close($sock);
168              wait_then_retry();
169              next;
170          }
171 <        chop $response;
171 >        chomp $response;
172          $last_modified = $response;
173      
174          print "Config last modified: ". (scalar localtime $last_modified/1000) . "\n";
175  
176          print $sock "FILELIST\n";
177          $response = <$sock>;
178 <        if (!$response) {
178 >        if (!$response || $response eq "ERROR\n") {
179              print "The i-scream server did not provide a configuration file list.\n";
180              close($sock);
181              wait_then_retry();
182              next;
183          }
184 <        chop $response;
184 >        chomp $response;
185          $file_list = $response;
186  
187          print "File list obtained: $file_list\n";
188  
189          print $sock "FQDN\n";
190          $response = <$sock>;
191 <        if (!$response) {
191 >        if (!$response || $response eq "ERROR\n") {
192              print "The i-scream server did not tell us our FQDN.\n";
193              close($sock);
194              wait_then_retry();
195              next;
196          }
197 <        chop $response;
197 >        chomp $response;
198          $fqdn = $response;
199  
200          print "FQDN returned: $fqdn\n";
201  
202          print $sock "UDPUpdateTime\n";
203          $response = <$sock>;
204 <        if (!$response) {
204 >        if (!$response || $response eq "ERROR\n") {
205              print "The i-scream server did not give us a UDPUpdateTime.\n";
206              close($sock);
207              wait_then_retry();
208              next;
209          }
210 <        chop $response;
210 >        chomp $response;
211          $udp_update_time = $response;
212  
213          print $sock "TCPUpdateTime\n";
214          $response = <$sock>;
215 <        if (!$response) {
215 >        if (!$response || $response eq "ERROR\n") {
216              print "The i-scream server did not give us a TCPUpdateTime.\n";
217              close($sock);
218              wait_then_retry();
219              next;
220          }
221 <        chop $response;
221 >        chomp $response;
222          $tcp_update_time = $response;
223      
224          print "UDP packet period: $udp_update_time seconds.\nTCP heartbeat period: $tcp_update_time seconds.\n";
# Line 211 | Line 242 | sub tcp_configure() {
242              wait_then_retry();
243              next;
244          }
245 <        chop $response;
215 <        $response =~ /^(.*);(.*);(.*)/;
245 >        chomp $response;
246          if ($response eq "ERROR") {
247              print "There are no active configured filters for your host.\n";
248              close($sock);
249              wait_then_retry();
250              next;
251          }
252 +        $response =~ /^(.*);(.*);(.*)/;
253          ($filter_addr, $udp_port, $tcp_port) = ($1, $2, $3);
254          unless (defined($filter_addr) && defined($udp_port) && defined($tcp_port)) {
255              print "Failed: Filter address response from server did not make sense: $response\n";
# Line 250 | Line 281 | sub tcp_configure() {
281   }
282  
283  
253
254
284   #-----------------------------------------------------------------------
285   # send_udp_packet
286   # Sends a UDP packet to an i-scream filter.
# Line 260 | Line 289 | sub tcp_configure() {
289   #-----------------------------------------------------------------------
290   sub send_udp_packet() {
291  
292 <    my(@statgrab) = `./statgrab.pl`;
293 <    my(%packet);
294 <    for (my($i) = 0; $i <= $#statgrab; $i++) {
295 <        $statgrab[$i] =~ /^([^\s]*) (.*)$/;
296 <        $packet{$1} = $2;
292 >    my($plugins_dir) = "plugins";
293 >    
294 >    opendir PLUGINS, $plugins_dir;
295 >    my(@plugins) = readdir PLUGINS;
296 >    foreach my $plugin (@plugins) {
297 >        push @data, `$plugins_dir/$plugin $ostype` if -x "$plugins_dir/$plugin" && -f "$plugins_dir/$plugin";
298      }
299      
300 +    # get some extra data
301      my($date) = time;
271    
272    my($disk_info) = "<disk>";
273    my($i) = 0;
274    while (defined $packet{"packet.disk.p$i.attributes.mount"}) {
275        $disk_info .= "<p$i";
276        $disk_info .= " name=\"" . $packet{"packet.disk.p$i.attributes.name"} . "\"";
277        $disk_info .= " kbytes=\"" . $packet{"packet.disk.p$i.attributes.kbytes"} . "\"";
278        $disk_info .= " used=\"" . $packet{"packet.disk.p$i.attributes.used"} . "\"";
279        $disk_info .= " avail=\"" . $packet{"packet.disk.p$i.attributes.avail"} . "\"";
280        $disk_info .= " mount=\"" . $packet{"packet.disk.p$i.attributes.mount"} . "\"";
281        $disk_info .= "></p$i>";
282        ++$i;
283    }
284    $disk_info .= "</disk>";
285
302      my($ip);
303      $ip = inet_ntoa(scalar(gethostbyname(hostname())) || 'localhost') or $ip = 'localhost';
288
289    # Build the XML packet this way, as we can clearly
290    # see the structure and contents... I like this ;-)
291    # [Note that the server rejects UDP packets that are
292    # larger than 8196 bytes]
293    my($xml) = <<EOF;
304      
305 < <packet seq_no="$seq_no" machine_name="$fqdn" date="$date" type="data" ip="$ip">
306 <    <load>
307 <        <load1>$packet{"packet.load.load1"}</load1>
308 <        <load5>$packet{"packet.load.load5"}</load5>
309 <        <load15>$packet{"packet.load.load15"}</load15>
310 <    </load>
311 <    <os>
312 <        <name>$packet{"packet.os.name"}</name>
313 <        <release>$packet{"packet.os.release"}</release>
314 <        <platform>$packet{"packet.os.platform"}</platform>
305 <        <sysname>$packet{"packet.os.sysname"}</sysname>
306 <        <version>$packet{"packet.os.version"}</version>
307 <        <uptime>$packet{"packet.os.uptime"}</uptime>
308 <    </os>
309 <    <users>
310 <        <count>$packet{"packet.users.count"}</count>
311 <        <list>$packet{"packet.users.list"}</list>
312 <    </users>
313 <    <processes>
314 <        <total>$packet{"packet.processes.total"}</total>
315 <        <sleeping>$packet{"packet.processes.sleeping"}</sleeping>
316 <        <zombie>$packet{"packet.processes.zombie"}</zombie>
317 <        <stopped>$packet{"packet.processes.stopped"}</stopped>
318 <        <cpu>$packet{"packet.processes.cpu"}</cpu>
319 <    </processes>
320 <    <cpu>
321 <        <idle>$packet{"packet.cpu.idle"}</idle>
322 <        <user>$packet{"packet.cpu.user"}</user>
323 <        <kernel>$packet{"packet.cpu.kernel"}</kernel>
324 <        <iowait>$packet{"packet.cpu.iowait"}</iowait>
325 <        <swap>$packet{"packet.cpu.swap"}</swap>
326 <    </cpu>
327 <    <memory>
328 <        <total>$packet{"packet.memory.total"}</total>
329 <        <free>$packet{"packet.memory.free"}</free>
330 <    </memory>
331 <    <swap>
332 <        <total>$packet{"packet.swap.total"}</total>
333 <        <free>$packet{"packet.swap.free"}</free>
334 <    </swap>
335 <    $disk_info
336 < </packet>
305 >    # add some extra data to the array
306 >    push(@data, "packet.attributes.seq_no $seq_no");
307 >    push(@data, "packet.attributes.machine_name $fqdn");
308 >    push(@data, "packet.attributes.date $date");
309 >    push(@data, "packet.attributes.type data");
310 >    push(@data, "packet.attributes.ip $ip");
311 >    push(@data, "packet.attributes.key $key");
312 >    
313 >    # sort the data
314 >    @data = sort(grep(!/^$/, grep(/^packet\./, @data)));
315  
316 < EOF
316 >    # turn the array into some nice XML
317 >    my($xml) = &make_xml("", "");
318  
340    # Make the packet smaller by stripping out newlines and leading spaces.
341    $xml =~ s/\n\s*//g;
342
319      my($sock) = new IO::Socket::INET (
320                                        PeerPort => $udp_port,
321                                        PeerAddr => $filter_addr,
322                                        Proto => 'udp'
323                                       ) or die "Could not send UDP: $!\n";
324 <
324 >    
325      print $sock $xml or die "Could not send UDP packet: $!\n";
326      close($sock);
327      $seq_no++;
# Line 355 | Line 331 | EOF
331   }
332  
333  
358
359
334   #-----------------------------------------------------------------------
335   # send_tcp_heartbeat
336   # Establishes a TCP connection to an i-scream filter.
# Line 423 | Line 397 | sub send_tcp_heartbeat() {
397          return;
398      }
399      
400 +    print $sock "KEY\n";
401 +    $key = <$sock>;
402 +    
403      print $sock "ENDHEARTBEAT\n";
404      $response = <$sock>;
405      if (!$response eq "OK\n") {
# Line 440 | Line 417 | sub send_tcp_heartbeat() {
417      return;
418   }
419  
420 +
421   #-----------------------------------------------------------------------
422   # write_pid
423   # Writes the PID (process ID) of this instance to $pidfile.
# Line 451 | Line 429 | sub write_pid() {
429      close PID;
430      
431      return;
432 + }
433 +
434 + #-----------------------------------------------------------------------
435 + # make_xml
436 + # Turns an array of plugins data into an XML string.
437 + #-----------------------------------------------------------------------
438 + sub make_xml() {
439 +    my($curlevel, $curline) = @_;
440 +    my($xmltemp) = ""; my($curtag) = ""; my($attributes) = "";
441 +    while(1) {
442 +        $curline = shift(@data) if $curline eq "";
443 +        return $xmltemp if not defined $curline;
444 +        chomp $curline;
445 +        # dealing with nest (or attributes)
446 +        if($curline =~ /^$curlevel([^\.\s]+\.)/) {
447 +            $curtag=$1;
448 +            if($curline =~ /^$curlevel$curtag([^\.\s]+)\s+(.*)$/) {
449 +                $xmltemp .= &make_xml("$curlevel$curtag", $curline);
450 +            }
451 +            elsif($curline =~ /^$curlevel$curtag(attributes)\.([^\.\s]+)\s+(.*)$/) {
452 +                $attributes .= " $2=\"$3\"";
453 +            }
454 +            else {
455 +                $xmltemp .= &make_xml("$curlevel$curtag", $curline);
456 +            }
457 +            my($nextline) = $data[0]; chomp $nextline if defined $nextline;
458 +            $curtag =~ s/(.*)\./$1/;
459 +            if((defined $nextline) && ($nextline =~ /^$curlevel$curtag\./)) {
460 +                $curline = "";
461 +            }
462 +            else {
463 +                $xmltemp = "<$curtag$attributes>$xmltemp</$curtag>" unless $curtag eq "";
464 +                return $xmltemp;
465 +            }
466 +        }
467 +        # dealing with value
468 +        elsif($curline =~ /^$curlevel([^\.\s]+)\s+(.*)$/) {
469 +            $curtag=$1;
470 +            $xmltemp=$2;          
471 +            my($nextline) = $data[0]; chomp $nextline if defined $nextline;
472 +            if(defined $nextline && ($nextline =~ /^$curlevel$curtag\./ || $nextline =~ /^$curlevel$curtag\s+/)) {
473 +                $curline = "";
474 +            }
475 +            else {
476 +                $xmltemp = "<$curtag$attributes>$xmltemp</$curtag>" unless $curtag eq "";
477 +                return $xmltemp;
478 +            }
479 +        }
480 +        # dealing with a null value
481 +        elsif($curline =~ /^$curlevel([^\.\s]+)$/) {
482 +            # simply adding a space makes the above elsif deal with it :)
483 +            # just level with an empty tag in the XML
484 +            $curline .= " ";
485 +        }
486 +        # failing all that, skip the line
487 +        else {
488 +            $curline = "";
489 +        }
490 +    }
491   }

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