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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 1.36 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 35 | Line 33 | use vars qw (
33               $fqdn
34               $pidfile
35               $retry_wait
36 +             @statgrab
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";
# Line 75 | 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...
# Line 90 | Line 89 | exit(0);
89   #-----------------------------------------------------------------------
90   sub wait_then_retry() {
91      print "Will retry configuration with filter manager in $retry_wait seconds.\n";
92 <    `sleep $retry_wait`;
92 >    sleep $retry_wait;
93   }
94  
95  
# Line 102 | Line 101 | sub wait_then_retry() {
101   #-----------------------------------------------------------------------
102   sub tcp_configure() {
103      
104 <    while (1 == 1) {
104 >    while (1) {
105          my($sock) = new IO::Socket::INET(
106                                           PeerAddr => $filter_manager_addr,
107                                           PeerPort => $filter_manager_port,
# Line 120 | Line 119 | sub tcp_configure() {
119      
120          print $sock "STARTCONFIG\n";
121          $response = <$sock>;
122 <        if (!chop $response eq "OK") {
123 <            print "The i-scream server rejected the STARTCONFIG command.  Terminated.";
122 >        if ($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;
# Line 131 | Line 130 | sub tcp_configure() {
130      
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      
# Line 138 | Line 143 | sub tcp_configure() {
143  
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  
# Line 145 | Line 156 | sub tcp_configure() {
156  
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  
# Line 152 | Line 169 | sub tcp_configure() {
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      
# Line 164 | Line 193 | sub tcp_configure() {
193  
194          print $sock "ENDCONFIG\n";
195          $response = <$sock>;
196 <        chomp $response;
168 <        if (!$response eq "OK") {
196 >        if ($response && !($response eq "OK\n")) {
197              print "ENDCONFIG command to server failed.  Terminated.\n";
198              close($sock);
199              wait_then_retry();
# Line 176 | Line 204 | sub tcp_configure() {
204      
205          print $sock "FILTER\n";
206          $response = <$sock>;
207 <        unless (defined($response)) {
207 >        if (!$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 =~ /(.*);(.*);(.*)/;
214 >        $response =~ /^(.*);(.*);(.*)/;
215          if ($response eq "ERROR") {
216              print "There are no active configured filters for your host.\n";
217              close($sock);
# Line 202 | Line 230 | sub tcp_configure() {
230  
231          print $sock "END\n";
232          $response = <$sock>;
233 <        chop $response;
206 <        if ($response eq "OK") {
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.";
237 >            print "The server failed the host configuration on the END command.\n";
238              close($sock);
239              wait_then_retry();
240              next;
# Line 222 | Line 249 | sub tcp_configure() {
249   }
250  
251  
225
226
252   #-----------------------------------------------------------------------
253   # send_udp_packet
254   # Sends a UDP packet to an i-scream filter.
# Line 232 | Line 257 | sub tcp_configure() {
257   #-----------------------------------------------------------------------
258   sub send_udp_packet() {
259  
260 <    my(@statgrab) = `./statgrab.pl`;
236 <    my(%packet);
237 <    for (my($i) = 0; $i <= $#statgrab; $i++) {
238 <        $statgrab[$i] =~ /^([^\s]*) (.*)$/;
239 <        $packet{$1} = $2;
240 <    }
260 >    @statgrab = `./statgrab.pl`;
261      
262 +    # get some extra data
263      my($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"} . "\"";
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($xml) = <<EOF;
267 >    # add some extra data to the array
268 >    push(@statgrab, "packet.attributes.seq_no=$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="$ip">
275 <    <load>
276 <        <load1>$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>
308 <
309 < EOF
310 <
311 <    # Make the packet smaller by stripping out newlines and leading spaces.
312 <    $xml =~ s/\n\s*//g;
313 <
274 >    # turn the array into some nice XML
275 >    my($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 "Could not send UDP: $!\n";
282 <
282 >    
283      print $sock $xml or die "Could not send UDP packet: $!\n";
284      close($sock);
285      $seq_no++;
# Line 326 | Line 289 | EOF
289   }
290  
291  
329
330
292   #-----------------------------------------------------------------------
293   # send_tcp_heartbeat
294   # Establishes a TCP connection to an i-scream filter.
295   # The heartbeat is used as a guaranteed "I'm alive" delivery mechanism.
296 + # If we need to reconfigure, then we complete the heartbeat before
297 + # doing so.
298   #-----------------------------------------------------------------------
299   sub send_tcp_heartbeat() {
300  
301 +    my ($doReconfigure) = 0;
302 +
303      my($sock) = new IO::Socket::INET(
304                                       PeerAddr => $filter_addr,
305                                       PeerPort => $tcp_port,
# Line 351 | Line 316 | sub send_tcp_heartbeat() {
316  
317      print $sock "HEARTBEAT\n";
318      $response = <$sock>;
319 <    return if (!defined $response);
355 <    chop $response;
356 <    if (!$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();
# Line 362 | Line 325 | sub send_tcp_heartbeat() {
325      
326      print $sock "CONFIG\n";
327      $response = <$sock>;
328 <    return if (!defined $response);
366 <    chop $response;
367 <    if (!$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();
# Line 373 | Line 334 | sub send_tcp_heartbeat() {
334  
335      print $sock "$file_list\n";
336      $response = <$sock>;
337 <    return if (!defined $response);
377 <    chop $response;
378 <    if (!$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();
# Line 384 | Line 343 | sub send_tcp_heartbeat() {
343      
344      print $sock "$last_modified\n";
345      $response = <$sock>;
346 <    return if (!defined $response);
388 <    chop $response;
389 <    if ($response eq "ERROR") {
346 >    if ($response eq "ERROR\n") {
347          close($sock);
348          print "Server configuration changed.  Reconfiguring with filter manager.\n";
349 <        &tcp_configure();
393 <        return;
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();
# Line 401 | Line 357 | sub send_tcp_heartbeat() {
357      
358      print $sock "ENDHEARTBEAT\n";
359      $response = <$sock>;
360 <    return if (!defined $response);
405 <    chop $response;
406 <    if (!$response eq "OK") {
360 >    if (!$response eq "OK\n") {
361          close($sock);
362          print "Server gave wrong response to ENDHEARTBEAT: $response\n";
363          &tcp_configure();
# Line 413 | Line 367 | sub send_tcp_heartbeat() {
367      close($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 $pidfile.
# Line 427 | Line 384 | sub write_pid() {
384      close PID;
385      
386      return;
387 + }
388 +
389 + #-----------------------------------------------------------------------
390 + # make_xml
391 + # Turns an array of statgrab data into an XML string.
392 + #-----------------------------------------------------------------------
393 + sub make_xml() {
394 +    my($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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