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Comparing projects/cms/source/host/ihost-perl/ihost.pl (file contents):
Revision 1.30 by pjm2, Thu Mar 15 09:44:08 2001 UTC vs.
Revision 1.43 by tdb, Tue Dec 18 03:51:11 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 35 | Line 33 | use vars qw (
33               $fqdn
34               $pidfile
35               $retry_wait
36 +             @data
37              );
38  
39   if (@ARGV != 2) {
# Line 45 | Line 44 | $filter_manager_addr = $ARGV[0];
44   $filter_manager_port = $ARGV[1];
45  
46   $seq_no = 1;
47 < $retry_wait = 600;
47 > $retry_wait = 60;
48  
49   # write our PID to a file
50 < $pidfile = "/var/tmp/ihost.pid";
50 > # use home dir by default
51 > #$pidfile = $ENV{"HOME"};
52 > # or drop it in /var/tmp if we can't find HOME
53 > $pidfile = "/var/tmp" if not defined $pidfile;
54 > $pidfile .= "/.ihost.pid";
55   &write_pid();
56  
57   &tcp_configure();
# Line 75 | Line 78 | while (1) {
78      else {
79          $delay = $next_tcp;
80      }
81 <    `sleep $delay`;
81 >    sleep $delay;
82   }
83  
84   # we'll probably never get here...
# Line 90 | Line 93 | exit(0);
93   #-----------------------------------------------------------------------
94   sub wait_then_retry() {
95      print "Will retry configuration with filter manager in $retry_wait seconds.\n";
96 <    `sleep $retry_wait`;
96 >    sleep $retry_wait;
97   }
98  
99  
# Line 102 | Line 105 | sub wait_then_retry() {
105   #-----------------------------------------------------------------------
106   sub tcp_configure() {
107      
108 <    while (1 == 1) {
108 >    while (1) {
109          my($sock) = new IO::Socket::INET(
110                                           PeerAddr => $filter_manager_addr,
111                                           PeerPort => $filter_manager_port,
# Line 120 | Line 123 | sub tcp_configure() {
123      
124          print $sock "STARTCONFIG\n";
125          $response = <$sock>;
126 <        if (!chop $response eq "OK") {
127 <            print "The i-scream server rejected the STARTCONFIG command.  Terminated.";
126 >        if ($response && !($response eq "OK\n")) {
127 >            print "The i-scream server rejected the STARTCONFIG command.\n";
128              close($sock);
129              wait_then_retry();
130              next;
# Line 131 | Line 134 | sub tcp_configure() {
134      
135          print $sock "LASTMODIFIED\n";
136          $response = <$sock>;
137 +        if (!$response) {
138 +            print "The i-scream server did not return anything for the LASTMODIFIED command.\n";
139 +            close($sock);
140 +            wait_then_retry();
141 +            next;
142 +        }
143          chop $response;
144          $last_modified = $response;
145      
# Line 138 | Line 147 | sub tcp_configure() {
147  
148          print $sock "FILELIST\n";
149          $response = <$sock>;
150 +        if (!$response) {
151 +            print "The i-scream server did not provide a configuration file list.\n";
152 +            close($sock);
153 +            wait_then_retry();
154 +            next;
155 +        }
156          chop $response;
157          $file_list = $response;
158  
# Line 145 | Line 160 | sub tcp_configure() {
160  
161          print $sock "FQDN\n";
162          $response = <$sock>;
163 +        if (!$response) {
164 +            print "The i-scream server did not tell us our FQDN.\n";
165 +            close($sock);
166 +            wait_then_retry();
167 +            next;
168 +        }
169          chop $response;
170          $fqdn = $response;
171  
# Line 152 | Line 173 | sub tcp_configure() {
173  
174          print $sock "UDPUpdateTime\n";
175          $response = <$sock>;
176 +        if (!$response) {
177 +            print "The i-scream server did not give us a UDPUpdateTime.\n";
178 +            close($sock);
179 +            wait_then_retry();
180 +            next;
181 +        }
182          chop $response;
183          $udp_update_time = $response;
184  
185          print $sock "TCPUpdateTime\n";
186          $response = <$sock>;
187 +        if (!$response) {
188 +            print "The i-scream server did not give us a TCPUpdateTime.\n";
189 +            close($sock);
190 +            wait_then_retry();
191 +            next;
192 +        }
193          chop $response;
194          $tcp_update_time = $response;
195      
# Line 164 | Line 197 | sub tcp_configure() {
197  
198          print $sock "ENDCONFIG\n";
199          $response = <$sock>;
200 <        chomp $response;
168 <        if (!$response eq "OK") {
200 >        if ($response && !($response eq "OK\n")) {
201              print "ENDCONFIG command to server failed.  Terminated.\n";
202              close($sock);
203              wait_then_retry();
# Line 176 | Line 208 | sub tcp_configure() {
208      
209          print $sock "FILTER\n";
210          $response = <$sock>;
211 <        unless (defined($response)) {
211 >        if (!$response) {
212              print "Failed: Could not get a filter address from the filter manager.\n";
213              close($sock);
214              wait_then_retry();
215              next;
216          }
217          chop $response;
218 <        $response =~ /(.*);(.*);(.*)/;
218 >        $response =~ /^(.*);(.*);(.*)/;
219          if ($response eq "ERROR") {
220              print "There are no active configured filters for your host.\n";
221              close($sock);
# Line 202 | Line 234 | sub tcp_configure() {
234  
235          print $sock "END\n";
236          $response = <$sock>;
237 <        chop $response;
206 <        if ($response eq "OK") {
237 >        if ($response && ($response eq "OK\n")) {
238              print "Host successfully configured via TCP.\n"
239          }
240          else {
241 <            print "The server failed the host configuration on the END command.";
241 >            print "The server failed the host configuration on the END command.\n";
242              close($sock);
243              wait_then_retry();
244              next;
# Line 222 | Line 253 | sub tcp_configure() {
253   }
254  
255  
225
226
256   #-----------------------------------------------------------------------
257   # send_udp_packet
258   # Sends a UDP packet to an i-scream filter.
# Line 232 | Line 261 | sub tcp_configure() {
261   #-----------------------------------------------------------------------
262   sub send_udp_packet() {
263  
264 <    my(@statgrab) = `./statgrab.pl`;
265 <    my(%packet);
266 <    for (my($i) = 0; $i <= $#statgrab; $i++) {
267 <        $statgrab[$i] =~ /^([^\s]*) (.*)$/;
268 <        $packet{$1} = $2;
264 >    my($plugins_dir) = "plugins";
265 >    
266 >    opendir PLUGINS, $plugins_dir;
267 >    my(@plugins) = readdir PLUGINS;
268 >    foreach my $plugin (@plugins) {
269 >        push @data, `$plugins_dir/$plugin` if -x "$plugins_dir/$plugin" && -f "$plugins_dir/$plugin";
270      }
271      
272 +    # get some extra data
273      my($date) = time;
274 +    my($ip);
275 +    $ip = inet_ntoa(scalar(gethostbyname(hostname())) || 'localhost') or $ip = 'localhost';
276      
277 <    my($disk_info) = "<disk>";
278 <    my($i) = 0;
279 <    while (defined $packet{"packet.disk.p$i.attributes.mount"}) {
280 <        $disk_info .= "<p$i";
281 <        $disk_info .= " name=\"" . $packet{"packet.disk.p$i.attributes.name"} . "\"";
282 <        $disk_info .= " kbytes=\"" . $packet{"packet.disk.p$i.attributes.kbytes"} . "\"";
250 <        $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;
277 >    # add some extra data to the array
278 >    push(@data, "packet.attributes.seq_no $seq_no");
279 >    push(@data, "packet.attributes.machine_name $fqdn");
280 >    push(@data, "packet.attributes.date $date");
281 >    push(@data, "packet.attributes.type data");
282 >    push(@data, "packet.attributes.ip $ip");
283      
284 < <packet seq_no="$seq_no" machine_name="$fqdn" date="$date" type="data" ip="$ip">
285 <    <load>
268 <        <load1>$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 <    $disk_info
307 < </packet>
284 >    # sort the data
285 >    @data = sort(grep(!/^$/, grep(/^packet\./, @data)));
286  
287 < EOF
287 >    # turn the array into some nice XML
288 >    my($xml) = &make_xml("", "");
289  
311    # Make the packet smaller by stripping out newlines and leading spaces.
312    $xml =~ s/\n\s*//g;
313
290      my($sock) = new IO::Socket::INET (
291                                        PeerPort => $udp_port,
292                                        PeerAddr => $filter_addr,
293                                        Proto => 'udp'
294                                       ) or die "Could not send UDP: $!\n";
295 <
295 >    
296      print $sock $xml or die "Could not send UDP packet: $!\n";
297      close($sock);
298      $seq_no++;
# Line 326 | Line 302 | EOF
302   }
303  
304  
329
330
305   #-----------------------------------------------------------------------
306   # send_tcp_heartbeat
307   # Establishes a TCP connection to an i-scream filter.
308   # The heartbeat is used as a guaranteed "I'm alive" delivery mechanism.
309 + # If we need to reconfigure, then we complete the heartbeat before
310 + # doing so.
311   #-----------------------------------------------------------------------
312   sub send_tcp_heartbeat() {
313  
314 +    my ($doReconfigure) = 0;
315 +
316      my($sock) = new IO::Socket::INET(
317                                       PeerAddr => $filter_addr,
318                                       PeerPort => $tcp_port,
# Line 351 | Line 329 | sub send_tcp_heartbeat() {
329  
330      print $sock "HEARTBEAT\n";
331      $response = <$sock>;
332 <    return if (!defined $response);
355 <    chop $response;
356 <    if (!$response eq "OK") {
332 >    if (!$response eq "OK\n") {
333          close($sock);
334          print "Server gave wrong response to HEARTBEAT: $response\n";
335          &tcp_configure();
# Line 362 | Line 338 | sub send_tcp_heartbeat() {
338      
339      print $sock "CONFIG\n";
340      $response = <$sock>;
341 <    return if (!defined $response);
366 <    chop $response;
367 <    if (!$response eq "OK") {
341 >    if (!$response eq "OK\n") {
342          close($sock);
343          print "Server gave wrong response to CONFIG: $response\n";
344          &tcp_configure();
# Line 373 | Line 347 | sub send_tcp_heartbeat() {
347  
348      print $sock "$file_list\n";
349      $response = <$sock>;
350 <    return if (!defined $response);
377 <    chop $response;
378 <    if (!$response eq "OK") {
350 >    if (!$response eq "OK\n") {
351          close($sock);
352          print "Server gave wrong response to file list: $response\n";
353          &tcp_configure();
# Line 384 | Line 356 | sub send_tcp_heartbeat() {
356      
357      print $sock "$last_modified\n";
358      $response = <$sock>;
359 <    return if (!defined $response);
388 <    chop $response;
389 <    if ($response eq "ERROR") {
359 >    if ($response eq "ERROR\n") {
360          close($sock);
361          print "Server configuration changed.  Reconfiguring with filter manager.\n";
362 <        &tcp_configure();
393 <        return;
362 >        $doReconfigure = 1;
363      }
364 <    if (!$response eq "OK") {
364 >    if (!$response eq "OK\n") {
365          close($sock);
366          print "Server gave wrong response to HEARTBEAT: $response\n";
367          &tcp_configure();
# Line 401 | Line 370 | sub send_tcp_heartbeat() {
370      
371      print $sock "ENDHEARTBEAT\n";
372      $response = <$sock>;
373 <    return if (!defined $response);
405 <    chop $response;
406 <    if (!$response eq "OK") {
373 >    if (!$response eq "OK\n") {
374          close($sock);
375          print "Server gave wrong response to ENDHEARTBEAT: $response\n";
376          &tcp_configure();
# Line 413 | Line 380 | sub send_tcp_heartbeat() {
380      close($sock);
381      print "^";
382      
383 +    &tcp_configure() if $doReconfigure;
384 +    
385      return;
386   }
387  
388 +
389   #-----------------------------------------------------------------------
390   # write_pid
391   # Writes the PID (process ID) of this instance to $pidfile.
# Line 427 | Line 397 | sub write_pid() {
397      close PID;
398      
399      return;
400 + }
401 +
402 + #-----------------------------------------------------------------------
403 + # make_xml
404 + # Turns an array of plugins data into an XML string.
405 + #-----------------------------------------------------------------------
406 + sub make_xml() {
407 +    my($curlevel, $curline) = @_;
408 +    my($xmltemp) = ""; my($curtag) = ""; my($attributes) = "";
409 +    while(1) {
410 +        $curline = shift(@data) if $curline eq "";
411 +        return $xmltemp if not defined $curline;
412 +        chomp $curline;
413 +        # dealing with nest (or attributes)
414 +        if($curline =~ /^$curlevel([^\.\s]+\.)/) {
415 +            $curtag=$1;
416 +            if($curline =~ /^$curlevel$curtag([^\.\s]+)\s+(.*)$/) {
417 +                $xmltemp .= &make_xml("$curlevel$curtag", $curline);
418 +            }
419 +            elsif($curline =~ /^$curlevel$curtag(attributes)\.([^\.\s]+)\s+(.*)$/) {
420 +                $attributes .= " $2=\"$3\"";
421 +            }
422 +            else {
423 +                $xmltemp .= &make_xml("$curlevel$curtag", $curline);
424 +            }
425 +            my($nextline) = $data[0]; chomp $nextline if defined $nextline;
426 +            if((defined $nextline) && ($nextline =~ /^$curlevel$curtag/)) {
427 +                $curline = "";
428 +            }
429 +            else {
430 +                $curtag =~ s/(.*)\./$1/;
431 +                $xmltemp = "<$curtag$attributes>$xmltemp</$curtag>" unless $curtag eq "";
432 +                return $xmltemp;
433 +            }
434 +        }
435 +        # dealing with value
436 +        elsif($curline =~ /^$curlevel([^\.\s]+)\s+(.*)$/) {
437 +            $curtag=$1;
438 +            $xmltemp=$2;          
439 +            my($nextline) = $data[0]; chomp $nextline if defined $nextline;
440 +            if(defined $nextline && ($nextline =~ /^$curlevel$curtag\./ || $nextline =~ /^$curlevel$curtag\s+/)) {
441 +                $curline = "";
442 +            }
443 +            else {
444 +                $xmltemp = "<$curtag$attributes>$xmltemp</$curtag>" unless $curtag eq "";
445 +                return $xmltemp;
446 +            }
447 +        }
448 +    }
449   }

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