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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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