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root/i-scream/projects/cms/source/host/ihost-perl/ihost.pl
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Comparing projects/cms/source/host/ihost-perl/ihost.pl (file contents):
Revision 1.27 by pjm2, Wed Mar 14 18:00:16 2001 UTC vs.
Revision 1.46 by tdb, Mon Mar 11 13:34:24 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 34 | Line 32 | use vars qw (
32               $file_list
33               $fqdn
34               $pidfile
35 +             $retry_wait
36 +             $ostype
37 +             @data
38              );
39  
40   if (@ARGV != 2) {
# Line 44 | Line 45 | $filter_manager_addr = $ARGV[0];
45   $filter_manager_port = $ARGV[1];
46  
47   $seq_no = 1;
48 + $retry_wait = 60;
49  
50 + # work out our platform, if we can.
51 + $ostype = `uname -s`;
52 + chomp $ostype;
53 + $ostype = "unknown" if not defined $ostype;
54 +
55   # write our PID to a file
56 < $pidfile = "/var/tmp/ihost.pid";
56 > # use home dir by default
57 > #$pidfile = $ENV{"HOME"};
58 > # or drop it in /var/tmp if we can't find HOME
59 > $pidfile = "/var/tmp" if not defined $pidfile;
60 > $pidfile .= "/.ihost.pid";
61   &write_pid();
62  
63   &tcp_configure();
# Line 73 | Line 84 | while (1) {
84      else {
85          $delay = $next_tcp;
86      }
87 <    `sleep $delay`;
87 >    sleep $delay;
88   }
89  
90   # we'll probably never get here...
# Line 82 | Line 93 | exit(0);
93  
94  
95   #-----------------------------------------------------------------------
96 + # wait_then_retry
97 + # Waits for the period of time specified in $retry_wait, then attempts
98 + # to reconfigure with the server.
99 + #-----------------------------------------------------------------------
100 + sub wait_then_retry() {
101 +    print "Will retry configuration with filter manager in $retry_wait seconds.\n";
102 +    sleep $retry_wait;
103 + }
104 +
105 +
106 + #-----------------------------------------------------------------------
107   # tcp_configure
108   # Establishes a TCP connection to the specified i-scream filter manager.
109   # The host then requests details from the server, such as the intervals
# Line 89 | Line 111 | exit(0);
111   #-----------------------------------------------------------------------
112   sub tcp_configure() {
113      
114 <    my($sock) = new IO::Socket::INET(
115 <                                     PeerAddr => $filter_manager_addr,
116 <                                     PeerPort => $filter_manager_port,
117 <                                     Proto => 'tcp'
118 <                                    ) or die "Cannot connect!";
119 <    if (!defined $sock) {
120 <        print "IHOST ERROR: Could not connect to $filter_manager_addr:$filter_manager_port.\n";
121 <        print "Please check that there is an i-scream server at this address.\n";
122 <        print "Program ended.\n";
123 <        exit(1);
124 <    }
114 >    while (1) {
115 >        my($sock) = new IO::Socket::INET(
116 >                                         PeerAddr => $filter_manager_addr,
117 >                                         PeerPort => $filter_manager_port,
118 >                                         Proto => 'tcp'
119 >                                        ) or die "Cannot connect!";
120 >        if (!defined $sock) {
121 >            print "IHOST ERROR: Could not connect to $filter_manager_addr:$filter_manager_port.\n";
122 >            print "Please check that there is an i-scream server at this address.\n";
123 >            wait_then_retry();
124 >            next;
125 >        }
126  
127 <    # Now run through the configuration process...
128 <    my($response);
127 >        # Now run through the configuration process...
128 >        my($response);
129      
130 <    print $sock "STARTCONFIG\n";
131 <    $response = <$sock>;
132 <    if (!chop $response eq "OK") {
133 <        print "The i-scream server rejected the STARTCONFIG command.  Terminated.";
134 <        exit(1);
135 <    }
130 >        print $sock "STARTCONFIG\n";
131 >        $response = <$sock>;
132 >        if ($response && !($response eq "OK\n")) {
133 >            print "The i-scream server rejected the STARTCONFIG command.\n";
134 >            close($sock);
135 >            wait_then_retry();
136 >            next;
137 >        }
138  
139 <    print "Config started okay.\n";
139 >        print "Config started okay.\n";
140      
141 <    print $sock "LASTMODIFIED\n";
142 <    $response = <$sock>;
143 <    chop $response;
144 <    $last_modified = $response;
141 >        print $sock "LASTMODIFIED\n";
142 >        $response = <$sock>;
143 >        if (!$response) {
144 >            print "The i-scream server did not return anything for the LASTMODIFIED command.\n";
145 >            close($sock);
146 >            wait_then_retry();
147 >            next;
148 >        }
149 >        chop $response;
150 >        $last_modified = $response;
151      
152 <    print "Config last modified: ". (scalar localtime $last_modified/1000) . "\n";
152 >        print "Config last modified: ". (scalar localtime $last_modified/1000) . "\n";
153  
154 <    print $sock "FILELIST\n";
155 <    $response = <$sock>;
156 <    chop $response;
157 <    $file_list = $response;
154 >        print $sock "FILELIST\n";
155 >        $response = <$sock>;
156 >        if (!$response) {
157 >            print "The i-scream server did not provide a configuration file list.\n";
158 >            close($sock);
159 >            wait_then_retry();
160 >            next;
161 >        }
162 >        chop $response;
163 >        $file_list = $response;
164  
165 <    print "File list obtained: $file_list\n";
165 >        print "File list obtained: $file_list\n";
166  
167 <    print $sock "FQDN\n";
168 <    $response = <$sock>;
169 <    chop $response;
170 <    $fqdn = $response;
167 >        print $sock "FQDN\n";
168 >        $response = <$sock>;
169 >        if (!$response) {
170 >            print "The i-scream server did not tell us our FQDN.\n";
171 >            close($sock);
172 >            wait_then_retry();
173 >            next;
174 >        }
175 >        chop $response;
176 >        $fqdn = $response;
177  
178 <    print "FQDN returned: $fqdn\n";
178 >        print "FQDN returned: $fqdn\n";
179  
180 <    print $sock "UDPUpdateTime\n";
181 <    $response = <$sock>;
182 <    chop $response;
183 <    $udp_update_time = $response;
180 >        print $sock "UDPUpdateTime\n";
181 >        $response = <$sock>;
182 >        if (!$response) {
183 >            print "The i-scream server did not give us a UDPUpdateTime.\n";
184 >            close($sock);
185 >            wait_then_retry();
186 >            next;
187 >        }
188 >        chop $response;
189 >        $udp_update_time = $response;
190  
191 <    print $sock "TCPUpdateTime\n";
192 <    $response = <$sock>;
193 <    chop $response;
194 <    $tcp_update_time = $response;
191 >        print $sock "TCPUpdateTime\n";
192 >        $response = <$sock>;
193 >        if (!$response) {
194 >            print "The i-scream server did not give us a TCPUpdateTime.\n";
195 >            close($sock);
196 >            wait_then_retry();
197 >            next;
198 >        }
199 >        chop $response;
200 >        $tcp_update_time = $response;
201      
202 <    print "UDP packet period: $udp_update_time seconds.\nTCP heartbeat period: $tcp_update_time seconds.\n";
202 >        print "UDP packet period: $udp_update_time seconds.\nTCP heartbeat period: $tcp_update_time seconds.\n";
203  
204 <    print $sock "ENDCONFIG\n";
205 <    $response = <$sock>;
206 <    chomp $response;
207 <    if (!$response eq "OK") {
208 <        print "ENDCONFIG command to server failed.  Terminated.\n";
209 <        exit(1);
210 <    }
204 >        print $sock "ENDCONFIG\n";
205 >        $response = <$sock>;
206 >        if ($response && !($response eq "OK\n")) {
207 >            print "ENDCONFIG command to server failed.  Terminated.\n";
208 >            close($sock);
209 >            wait_then_retry();
210 >            next;
211 >        }
212  
213 <    print "Config ended.\n";
213 >        print "Config ended.\n";
214      
215 <    print $sock "FILTER\n";
216 <    $response = <$sock>;
217 <    unless (defined($response)) {
218 <        print "Failed: Could not get a filter address from the filter manager.\n";
219 <        exit(1);
220 <    }
221 <    chop $response;
222 <    $response =~ /(.*);(.*);(.*)/;
223 <    ($filter_addr, $udp_port, $tcp_port) = ($1, $2, $3);
224 <    unless (defined($filter_addr) && defined($udp_port) && defined($tcp_port)) {
225 <        print "Failed: Filter address response from server did not make sense: $response\n";
226 <        exit(1);
227 <    }
215 >        print $sock "FILTER\n";
216 >        $response = <$sock>;
217 >        if (!$response) {
218 >            print "Failed: Could not get a filter address from the filter manager.\n";
219 >            close($sock);
220 >            wait_then_retry();
221 >            next;
222 >        }
223 >        chop $response;
224 >        $response =~ /^(.*);(.*);(.*)/;
225 >        if ($response eq "ERROR") {
226 >            print "There are no active configured filters for your host.\n";
227 >            close($sock);
228 >            wait_then_retry();
229 >            next;
230 >        }
231 >        ($filter_addr, $udp_port, $tcp_port) = ($1, $2, $3);
232 >        unless (defined($filter_addr) && defined($udp_port) && defined($tcp_port)) {
233 >            print "Failed: Filter address response from server did not make sense: $response\n";
234 >            close($sock);
235 >            wait_then_retry();
236 >            next;
237 >        }
238      
239 <    print "Got filter data ($filter_addr, $udp_port, $tcp_port)\n";
239 >        print "Got filter data ($filter_addr, $udp_port, $tcp_port)\n";
240  
241 <    print $sock "END\n";
242 <    $response = <$sock>;
243 <    chop $response;
244 <    if ($response eq "OK") {
245 <        print "Host successfully configured via TCP.\n"
246 <    }
247 <    else {
248 <        print "The server failed the host configuration on the END command.";
249 <        exit(1);
250 <    }
241 >        print $sock "END\n";
242 >        $response = <$sock>;
243 >        if ($response && ($response eq "OK\n")) {
244 >            print "Host successfully configured via TCP.\n"
245 >        }
246 >        else {
247 >            print "The server failed the host configuration on the END command.\n";
248 >            close($sock);
249 >            wait_then_retry();
250 >            next;
251 >        }
252      
253 <    close($sock);
253 >        close($sock);
254  
255 <    print "Configuration finished sucessfully!\n";
256 <    
255 >        print "Configuration finished sucessfully!\n";
256 >        last;
257 >    }
258      return;
259   }
260  
261  
194
195
262   #-----------------------------------------------------------------------
263   # send_udp_packet
264   # Sends a UDP packet to an i-scream filter.
# Line 201 | Line 267 | sub tcp_configure() {
267   #-----------------------------------------------------------------------
268   sub send_udp_packet() {
269  
270 <    my(@statgrab) = `./statgrab.pl`;
271 <    my(%packet);
272 <    for (my($i) = 0; $i <= $#statgrab; $i++) {
273 <        $statgrab[$i] =~ /^([^\s]*) (.*)$/;
274 <        $packet{$1} = $2;
270 >    my($plugins_dir) = "plugins";
271 >    
272 >    opendir PLUGINS, $plugins_dir;
273 >    my(@plugins) = readdir PLUGINS;
274 >    foreach my $plugin (@plugins) {
275 >        push @data, `$plugins_dir/$plugin $ostype` if -x "$plugins_dir/$plugin" && -f "$plugins_dir/$plugin";
276      }
277      
278 +    # get some extra data
279      my($date) = time;
280 +    my($ip);
281 +    $ip = inet_ntoa(scalar(gethostbyname(hostname())) || 'localhost') or $ip = 'localhost';
282      
283 <    my($disk_info) = "<disk>";
284 <    my($i) = 0;
285 <    while (defined $packet{"packet.disk.p$i.attributes.mount"}) {
286 <        $disk_info .= "<p$i";
287 <        $disk_info .= " name=\"" . $packet{"packet.disk.p$i.attributes.name"} . "\"";
288 <        $disk_info .= " kbytes=\"" . $packet{"packet.disk.p$i.attributes.kbytes"} . "\"";
219 <        $disk_info .= " used=\"" . $packet{"packet.disk.p$i.attributes.used"} . "\"";
220 <        $disk_info .= " avail=\"" . $packet{"packet.disk.p$i.attributes.avail"} . "\"";
221 <        $disk_info .= " mount=\"" . $packet{"packet.disk.p$i.attributes.mount"} . "\"";
222 <        $disk_info .= "></p$i>";
223 <        ++$i;
224 <    }
225 <    $disk_info .= "</disk>";
226 <
227 <    my($ip) = inet_ntoa(scalar(gethostbyname(hostname())) || 'localhost');
228 <
229 <    # Build the XML packet this way, as we can clearly
230 <    # see the structure and contents... I like this ;-)
231 <    # [Note that the server rejects UDP packets that are
232 <    # larger than 8196 bytes]
233 <    my($xml) = <<EOF;
283 >    # add some extra data to the array
284 >    push(@data, "packet.attributes.seq_no $seq_no");
285 >    push(@data, "packet.attributes.machine_name $fqdn");
286 >    push(@data, "packet.attributes.date $date");
287 >    push(@data, "packet.attributes.type data");
288 >    push(@data, "packet.attributes.ip $ip");
289      
290 < <packet seq_no="$seq_no" machine_name="$fqdn" date="$date" type="data" ip="$ip">
291 <    <load>
237 <        <load1>$packet{"packet.load.load1"}</load1>
238 <        <load5>$packet{"packet.load.load5"}</load5>
239 <        <load15>$packet{"packet.load.load15"}</load15>
240 <    </load>
241 <    <os>
242 <        <name>$packet{"packet.os.name"}</name>
243 <        <release>$packet{"packet.os.release"}</release>
244 <        <platform>$packet{"packet.os.platform"}</platform>
245 <        <sysname>$packet{"packet.os.sysname"}</sysname>
246 <        <version>$packet{"packet.os.version"}</version>
247 <        <uptime>$packet{"packet.os.uptime"}</uptime>
248 <    </os>
249 <    <users>
250 <        <count>$packet{"packet.users.count"}</count>
251 <        <list>$packet{"packet.users.list"}</list>
252 <    </users>
253 <    <processes>
254 <        <total>$packet{"packet.processes.total"}</total>
255 <        <sleeping>$packet{"packet.processes.sleeping"}</sleeping>
256 <        <zombie>$packet{"packet.processes.zombie"}</zombie>
257 <        <stopped>$packet{"packet.processes.stopped"}</stopped>
258 <        <cpu>$packet{"packet.processes.cpu"}</cpu>
259 <    </processes>
260 <    <cpu>
261 <        <idle>$packet{"packet.cpu.idle"}</idle>
262 <        <user>$packet{"packet.cpu.user"}</user>
263 <        <kernel>$packet{"packet.cpu.kernel"}</kernel>
264 <        <iowait>$packet{"packet.cpu.iowait"}</iowait>
265 <        <swap>$packet{"packet.cpu.swap"}</swap>
266 <    </cpu>
267 <    <memory>
268 <        <total>$packet{"packet.memory.total"}</total>
269 <        <free>$packet{"packet.memory.free"}</free>
270 <    </memory>
271 <    <swap>
272 <        <total>$packet{"packet.swap.total"}</total>
273 <        <free>$packet{"packet.swap.free"}</free>
274 <    </swap>
275 <    $disk_info
276 < </packet>
290 >    # sort the data
291 >    @data = sort(grep(!/^$/, grep(/^packet\./, @data)));
292  
293 < EOF
293 >    # turn the array into some nice XML
294 >    my($xml) = &make_xml("", "");
295  
280    # Make the packet smaller by stripping out newlines and leading spaces.
281    $xml =~ s/\n\s*//g;
282
296      my($sock) = new IO::Socket::INET (
297                                        PeerPort => $udp_port,
298                                        PeerAddr => $filter_addr,
299                                        Proto => 'udp'
300                                       ) or die "Could not send UDP: $!\n";
301 <
301 >    
302      print $sock $xml or die "Could not send UDP packet: $!\n";
303      close($sock);
304      $seq_no++;
# Line 295 | Line 308 | EOF
308   }
309  
310  
298
299
311   #-----------------------------------------------------------------------
312   # send_tcp_heartbeat
313   # Establishes a TCP connection to an i-scream filter.
314   # The heartbeat is used as a guaranteed "I'm alive" delivery mechanism.
315 + # If we need to reconfigure, then we complete the heartbeat before
316 + # doing so.
317   #-----------------------------------------------------------------------
318   sub send_tcp_heartbeat() {
319  
320 +    my ($doReconfigure) = 0;
321 +
322      my($sock) = new IO::Socket::INET(
323                                       PeerAddr => $filter_addr,
324                                       PeerPort => $tcp_port,
# Line 320 | Line 335 | sub send_tcp_heartbeat() {
335  
336      print $sock "HEARTBEAT\n";
337      $response = <$sock>;
338 <    return if (!defined $response);
324 <    chop $response;
325 <    if (!$response eq "OK") {
338 >    if (!$response eq "OK\n") {
339          close($sock);
340          print "Server gave wrong response to HEARTBEAT: $response\n";
341          &tcp_configure();
# Line 331 | Line 344 | sub send_tcp_heartbeat() {
344      
345      print $sock "CONFIG\n";
346      $response = <$sock>;
347 <    return if (!defined $response);
335 <    chop $response;
336 <    if (!$response eq "OK") {
347 >    if (!$response eq "OK\n") {
348          close($sock);
349          print "Server gave wrong response to CONFIG: $response\n";
350          &tcp_configure();
# Line 342 | Line 353 | sub send_tcp_heartbeat() {
353  
354      print $sock "$file_list\n";
355      $response = <$sock>;
356 <    return if (!defined $response);
346 <    chop $response;
347 <    if (!$response eq "OK") {
356 >    if (!$response eq "OK\n") {
357          close($sock);
358          print "Server gave wrong response to file list: $response\n";
359          &tcp_configure();
# Line 353 | Line 362 | sub send_tcp_heartbeat() {
362      
363      print $sock "$last_modified\n";
364      $response = <$sock>;
365 <    return if (!defined $response);
357 <    chop $response;
358 <    if ($response eq "ERROR") {
365 >    if ($response eq "ERROR\n") {
366          close($sock);
367          print "Server configuration changed.  Reconfiguring with filter manager.\n";
368 <        &tcp_configure();
362 <        return;
368 >        $doReconfigure = 1;
369      }
370 <    if (!$response eq "OK") {
370 >    if (!$response eq "OK\n") {
371          close($sock);
372          print "Server gave wrong response to HEARTBEAT: $response\n";
373          &tcp_configure();
# Line 370 | Line 376 | sub send_tcp_heartbeat() {
376      
377      print $sock "ENDHEARTBEAT\n";
378      $response = <$sock>;
379 <    return if (!defined $response);
374 <    chop $response;
375 <    if (!$response eq "OK") {
379 >    if (!$response eq "OK\n") {
380          close($sock);
381          print "Server gave wrong response to ENDHEARTBEAT: $response\n";
382          &tcp_configure();
# Line 382 | Line 386 | sub send_tcp_heartbeat() {
386      close($sock);
387      print "^";
388      
389 +    &tcp_configure() if $doReconfigure;
390 +    
391      return;
392   }
393  
394 +
395   #-----------------------------------------------------------------------
396   # write_pid
397   # Writes the PID (process ID) of this instance to $pidfile.
# Line 396 | Line 403 | sub write_pid() {
403      close PID;
404      
405      return;
406 + }
407 +
408 + #-----------------------------------------------------------------------
409 + # make_xml
410 + # Turns an array of plugins data into an XML string.
411 + #-----------------------------------------------------------------------
412 + sub make_xml() {
413 +    my($curlevel, $curline) = @_;
414 +    my($xmltemp) = ""; my($curtag) = ""; my($attributes) = "";
415 +    while(1) {
416 +        $curline = shift(@data) if $curline eq "";
417 +        return $xmltemp if not defined $curline;
418 +        chomp $curline;
419 +        # dealing with nest (or attributes)
420 +        if($curline =~ /^$curlevel([^\.\s]+\.)/) {
421 +            $curtag=$1;
422 +            if($curline =~ /^$curlevel$curtag([^\.\s]+)\s+(.*)$/) {
423 +                $xmltemp .= &make_xml("$curlevel$curtag", $curline);
424 +            }
425 +            elsif($curline =~ /^$curlevel$curtag(attributes)\.([^\.\s]+)\s+(.*)$/) {
426 +                $attributes .= " $2=\"$3\"";
427 +            }
428 +            else {
429 +                $xmltemp .= &make_xml("$curlevel$curtag", $curline);
430 +            }
431 +            my($nextline) = $data[0]; chomp $nextline if defined $nextline;
432 +            $curtag =~ s/(.*)\./$1/;
433 +            if((defined $nextline) && ($nextline =~ /^$curlevel$curtag\./)) {
434 +                $curline = "";
435 +            }
436 +            else {
437 +                $xmltemp = "<$curtag$attributes>$xmltemp</$curtag>" unless $curtag eq "";
438 +                return $xmltemp;
439 +            }
440 +        }
441 +        # dealing with value
442 +        elsif($curline =~ /^$curlevel([^\.\s]+)\s+(.*)$/) {
443 +            $curtag=$1;
444 +            $xmltemp=$2;          
445 +            my($nextline) = $data[0]; chomp $nextline if defined $nextline;
446 +            if(defined $nextline && ($nextline =~ /^$curlevel$curtag\./ || $nextline =~ /^$curlevel$curtag\s+/)) {
447 +                $curline = "";
448 +            }
449 +            else {
450 +                $xmltemp = "<$curtag$attributes>$xmltemp</$curtag>" unless $curtag eq "";
451 +                return $xmltemp;
452 +            }
453 +        }
454 +        # dealing with a null value
455 +        elsif($curline =~ /^$curlevel([^\.\s]+)$/) {
456 +            # simply adding a space makes the above elsif deal with it :)
457 +            # just level with an empty tag in the XML
458 +            $curline .= " ";
459 +        }
460 +        # failing all that, skip the line
461 +        else {
462 +            $curline = "";
463 +        }
464 +    }
465   }

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