reports/rrdgraphing/watch.pl

#!/usr/bin/perl -w

# 
# i-scream central monitoring system
# http://www.i-scream.org
# Copyright (C) 2000-2002 i-scream
# 
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License
# as published by the Free Software Foundation; either version 2
# of the License, or (at your option) any later version.
# 
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
# 
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
#

# -----------------------------------------------------------
# i-scream graph generation scripts
# http://www.i-scream.org
#
# Generates rrd databases for i-scream data by connecting to
# the i-scream server and collecting data.
#
# $Author: tdb $
# $Id: watch.pl,v 1.10 2005/06/15 10:41:25 tdb Exp $
#------------------------------------------------------------

my($version) = '$Id: watch.pl,v 1.10 2005/06/15 10:41:25 tdb Exp $';

$| = 1;

use strict;
use Getopt::Std;
use IO::Socket;
use iscream::XMLParser;
use RRDs;

# define variables that will be read from the config
# nb. keep this insync with the config file!
use vars qw{
    $imgdir $rrddir
    $maxrrdage $maximgage $deleterrds $deleteimgs
    $hex_slash $hex_underscore $hex_space $hex_colon $hex_bslash $hex_rbracket
    $hex_lbracket $hex_plus
    $rrdstep $retry_wait
    $verbose $quiet
};

# default locate of the config file
my($configfile) = "rrdgraphing.conf";

# check for command line arguments
my(%opts);
my($ret) = getopts('hvqVc:', \%opts);

# if invalid argument given, $ret will not be 1
&usage() if $ret != 1;

# first process the arguments which might mean we exit now

# -h is usage
if($opts{h}) {
    &usage();
}
# -V is version
if($opts{V}) {
    print "watch.pl version: $version\n";
    exit(1);
}

# Then try getting the config

# -c specifies the config file location
if($opts{c}) {
    $configfile = $opts{c};
}
# suck in the config
&log("reading config from $configfile\n");
do $configfile;

# Then any options we might want to override the config with

# -v is verbose
if($opts{v}) {
    $verbose = $opts{v};
}
# -q is verbose
if($opts{q}) {
    $quiet = $opts{q};
    # if we're meant to be quiet, we can hardly be verbose!
#    $verbose = 0;
}

# Finally check for required arguments

# check we still have two arguments left
if (@ARGV != 2) {
    &usage();
}

# user supplied client interface server and port
my($addr) = $ARGV[0];
my($cport) = $ARGV[1];


# Main program loop
while(1) {
    
    &log("Connecting control channel to port $cport on $addr...\n");
    
    # attempt to connect the control channel
    my($csock) = new IO::Socket::INET(
        PeerAddr => $addr,
        PeerPort => $cport,
        Proto => 'tcp'
        );
    
    # if socket isn't defined connection failed
    if (!defined $csock) {
        &error("ERROR: Could not connect control channel to $addr:$cport.\n");
        &error("Please check that there is an i-scream server at this address.\n");
        &wait_then_retry();
        next;
    }
    
    my($response);
    
    # client interface should send it's protocol ID
    # we know about "PROTOCOL 1.1", and will only accept the same
    $response = <$csock>;
    &log("CLI sent: $response");
    if ($response && $response ne "PROTOCOL 1.1\n") {
        &error("The i-scream server sent an unexpected protocol ID: $response\n");
        close($csock);
        &wait_then_retry();
        next;
    }
    
    # send our identifier to the client interface
    print $csock "rrdgraphing\n";
    &log("we sent: rrdgraphing\n");
    $response = <$csock>;
    &log("CLI sent: $response");
    if ($response && $response ne "OK\n") {
        &error("Received unexpected response: $response\n");
        close($csock);
        &wait_then_retry();
        next;
    }
    
    # tell the client interface we'd like to start the data channel
    print $csock "STARTDATA\n";
    &log("we sent: STARTDATA\n");

    # the response should be the socket to connect the data channel to
    $response = <$csock>;
    &log("CLI sent: $response");
    chomp $response;
    
    my($dport) = $response;
    &log("Connecting data channel to port $dport on $addr...\n");
    
    # attempt to connect the data channel
    my($dsock) = new IO::Socket::INET(
        PeerAddr => $addr,
        PeerPort => $dport,
        Proto => 'tcp'
        ) or die "arse?";
    
    # if socket isn't defined connection failed
    if (!defined $dsock) {
        &error("ERROR: Could not connect data channel to $addr:$dport.\n");
        &error("Failure in communications.\n");
        close($csock);
        &wait_then_retry();
        next;
    }
    
    # the data channel should now be sending us data!
    
    # call sub to process data being received over the data channel
    &processdata($dsock);
    
    # data processing has stopped, close sockets
    close($csock);
    close($dsock);
    
    # wait before retrying
    &wait_then_retry();
}

# we'll never reach here... unless 1 becomes false for some reason ;)
exit 0;


#
# wait for a while before retrying
#
sub wait_then_retry() {
    &error("Will retry connection to i-scream server in $retry_wait seconds.\n\n");
    sleep $retry_wait;
}

#
# Given the socket of the data channel will process all
# the incoming XML data, creating and updating the appropriate
# database files.
#
# $dsock = socket connected to the data channel
#
sub processdata() {
    # the socket connected to the data channel
    my($dsock) = @_;
    # save us recreating this variable each time we loop
    my($xml);
    
    while(1) {
        # read data
        $xml = <$dsock>;
        
        # something odd has happened
        last if not defined $xml;
        
        # attempt to parse the data
        my($err, %xmlhash) = &iscream::XMLParser::parse($xml);
        if($err) {
            &error("Skipped, XML did not parse: $xml");
            next;
        }
        
        # standard data packet
        if($xmlhash{"packet.attributes.type"} eq "data") {
            my($machine) = $xmlhash{"packet.attributes.machine_name"};
            my($date) = $xmlhash{"packet.attributes.date"};
            
            # make directory for machine
            if(! -d "$rrddir/$machine") {
                # not sure on this umask, but it seems to work?
                mkdir "$rrddir/$machine", 0777;
                &log("created directory $rrddir/$machine\n");
            }
            
            my(@data);
            
            # cpu
            @data = ( "packet.cpu.idle:idle:GAUGE",
                      "packet.cpu.user:user:GAUGE",
                      "packet.cpu.kernel:kernel:GAUGE",
                      "packet.cpu.swap:swap:GAUGE",
                      "packet.cpu.iowait:iowait:GAUGE",
                     );
            &updaterrd($machine, "cpu", $date, $rrdstep, \%xmlhash, @data);
                   
            # uptime
            @data = ( "packet.os.uptime:uptime:GAUGE" );
            &updaterrd($machine, "uptime", $date, $rrdstep, \%xmlhash, @data);
                   
            # mem
            @data = ( "packet.memory.free:free:GAUGE",
                      "packet.memory.total:total:GAUGE",
                      "packet.memory.cache:cache:GAUGE",
                     );
            &updaterrd($machine, "mem", $date, $rrdstep, \%xmlhash, @data);
                    
            # load
            @data = ( "packet.load.load1:load1:GAUGE",
                      "packet.load.load5:load5:GAUGE",
                      "packet.load.load15:load15:GAUGE",
                     );
            &updaterrd($machine, "load", $date, $rrdstep, \%xmlhash, @data);
            
            # processes
            @data = ( "packet.processes.cpu:cpu:GAUGE",
                      "packet.processes.sleeping:sleeping:GAUGE",
                      "packet.processes.stopped:stopped:GAUGE",
                      "packet.processes.total:total:GAUGE",
                      "packet.processes.zombie:zombie:GAUGE",
                     );
            &updaterrd($machine, "proc", $date, $rrdstep, \%xmlhash, @data);
            
            # swap
            @data = ( "packet.swap.free:free:GAUGE",
                      "packet.swap.total:total:GAUGE",
                     );
            &updaterrd($machine, "swap", $date, $rrdstep, \%xmlhash, @data);
            
            # users
            @data = ( "packet.users.count:count:GAUGE",
                     );
            &updaterrd($machine, "users", $date, $rrdstep, \%xmlhash, @data);

            # paging
            @data = ( "packet.pages.pageins:pageins:GAUGE",
                      "packet.pages.pageouts:pageouts:GAUGE",
                     );
            &updaterrd($machine, "paging", $date, $rrdstep, \%xmlhash, @data);

            # disk
            my($i) = 0;
            while(defined $xmlhash{"packet.disk.p$i.attributes.mount"}) {
                my($mount) = $xmlhash{"packet.disk.p$i.attributes.mount"};
                $mount =~ s/_/$hex_underscore/g;
                $mount =~ s/\//$hex_slash/g;
                $mount =~ s/\\/$hex_bslash/g;
                $mount =~ s/ /$hex_space/g;
                $mount =~ s/:/$hex_colon/g;
                @data = ( "packet.disk.p$i.attributes.total:total:GAUGE",
                          "packet.disk.p$i.attributes.used:used:GAUGE",
                          "packet.disk.p$i.attributes.totalinodes:totalinodes:GAUGE",
                          "packet.disk.p$i.attributes.freeinodes:freeinodes:GAUGE",
                         );
                &updaterrd($machine, "disk-$mount", $date, $rrdstep, \%xmlhash, @data);
                ++$i;
            }

            # diskio
            $i = 0;
            while(defined $xmlhash{"packet.diskio.p$i.attributes.name"}) {
                my($name) = $xmlhash{"packet.diskio.p$i.attributes.name"};
                $name =~ s/_/$hex_underscore/g;
                $name =~ s/\//$hex_slash/g;
                $name =~ s/\\/$hex_bslash/g;
                $name =~ s/ /$hex_space/g;
                $name =~ s/:/$hex_colon/g;
                @data = ( "packet.diskio.p$i.attributes.rbytes:rbytes:GAUGE",
                          "packet.diskio.p$i.attributes.wbytes:wbytes:GAUGE",
                         );
                &updaterrd($machine, "diskio-$name", $date, $rrdstep, \%xmlhash, @data);
                ++$i
            }

            # net
            $i = 0;
            while(defined $xmlhash{"packet.net.p$i.attributes.name"}) {
                my($name) = $xmlhash{"packet.net.p$i.attributes.name"};
                $name =~ s/_/$hex_underscore/g;
                $name =~ s/\//$hex_slash/g;
                $name =~ s/\\/$hex_bslash/g;
                $name =~ s/ /$hex_space/g;
                $name =~ s/:/$hex_colon/g;
                $name =~ s/\(/$hex_lbracket/g;
                $name =~ s/\)/$hex_rbracket/g;
                $name =~ s/\+/$hex_plus/g;
                @data = ( "packet.net.p$i.attributes.rx:rx:GAUGE",
                          "packet.net.p$i.attributes.tx:tx:GAUGE",
                         );
                &updaterrd($machine, "net-$name", $date, $rrdstep, \%xmlhash, @data);
                ++$i
            }

            # mailq
            $i = 0;
            while(defined $xmlhash{"packet.mailq.p$i.attributes.name"}) {
                my($name) = $xmlhash{"packet.mailq.p$i.attributes.name"};
                $name =~ s/\s+//g;
                @data = ( "packet.mailq.p$i.attributes.size:size:GAUGE",
                         );
                &updaterrd($machine, "mailq-$name", $date, $rrdstep, \%xmlhash, @data);
                ++$i
            }
        }
        
        # queue statistics packet
        elsif($xmlhash{"packet.attributes.type"} eq "queueStat") {
            # psuedo machine for internal server stuff
            my($machine) = "i-scream-server";
            # make directory
            if(! -d "$rrddir/$machine") {
                # not sure on this umask, but it seems to work?
                mkdir "$rrddir/$machine", 0777;
                &log("created directory $rrddir/$machine\n");
            }
            my($hash) = $xmlhash{"packet.attributes.hashCode"};
            my($date) = $xmlhash{"packet.attributes.date"};
            my($name) = $xmlhash{"packet.attributes.name"};
            # take a look to see if we have a shutdown packet...
            if($xmlhash{"packet.attributes.shutdown"} && $xmlhash{"packet.attributes.shutdown"} eq "true") {
                unlink <$rrddir/$machine/$hash\_*.rrd>, "$rrddir/$machine/$hash.def", <$imgdir/$machine/$hash*.png>;
                &log("deleted $rrddir/$machine/$hash\_*.rrd $rrddir/$machine/$hash.def $imgdir/$machine/$hash*.png\n");
                next;
            }
            # look through to see how many internal queues we have
            my($i) = 0;
            while(defined $xmlhash{"packet.queue.attributes.queue$i"}) {
                # see if the queue has been removed
                if($xmlhash{"packet.queue.attributes.queue$i"} eq "[deleted]") {
                    # delete the queues rrd
                    unlink "$rrddir/$machine/$hash\_$i.rrd";
                    &log("deleted $rrddir/$machine/$hash\_$i.rrd\n");
                    # are there any other rrd's left on this queue? if not, cleanup.
                    # get a list of any that may be still there..
                    opendir(DIR, "$rrddir/$machine");
                    my(@rrdcountfiles) = grep { -f "$rrddir/$machine/$_" && /^$hash\_\d+.rrd$/ } readdir(DIR);
                    closedir DIR;
                    # count them (+1 because an empty array is size -1)
                    my($rrdcount) = $#rrdcountfiles + 1;
                    if($rrdcount == 0) {
                        # clean up the def file and any images
                        unlink "$rrddir/$machine/$hash.def", <$imgdir/$machine/$hash*.png>;
                        &log("deleted $rrddir/$machine/$hash.def $imgdir/$machine/$hash*.png\n");
                    }
                    ++$i;
                    next;
                }
                # the &updaterrd will also do this check, but we want
                # to write our def file out first
                if( ! -f "$rrddir/$machine/$hash\_$i.rrd" ) {
                    open(DEF, ">$rrddir/$machine/$hash.def");
                    print DEF $name;
                    close DEF;
                    &log("created $rrddir/$machine/$hash.def\n");
                }
                my(@data) = ( "packet.queue.attributes.queue$i:size:GAUGE",
                              "packet.queue.attributes.total:total:COUNTER",
                             );
                &updaterrd($machine, "$hash\_$i", $date, $rrdstep, \%xmlhash, @data);
                ++$i;
            }
        }
        else {
            #&error("SKIPPED: valid xml, but not a data or statistics packet\n");
        }
    }
    
    # we'll now return from this sub and reconnect
    &error("Data channel socket gave no data, bailing out...\n");
}

#
# sub to update an rrd file
#
# $machine   = name of the machine
#              (eg. kernow.ukc.ac.uk)
# $type      = the type of graph for the machine
#              (eg. cpu)
# $date      = the date of the item we want to add
#              (in seconds since the epoch)
# $step      = the interval at which the database steps
#              used when we create a new rrd
# $xmlref    = reference to the xml data packet
# @data      = array containing data items to add
#              (eg. "packet.cpu.user:user:GAUGE")
#
sub updaterrd() {
    my($machine, $type, $date, $step, $xmlref, @data) = @_;
    # get hold of the xmlhash we have a reference to
    my(%xmlhash) = %$xmlref;
    # check if we need to create a new rrd
    if( ! -f "$rrddir/$machine/$type.rrd") {
        my(@createdata);
        # pull the details out of the data we've been given
        foreach my $dataitem (@data) {
            if($dataitem =~ /^\S+:(\S+):(\S+)$/) {
                push @createdata, "$1:$2";
            }
        }
        # call the &makerrd to actually create the rrd
        &log("making new rrd for $rrddir/$machine/$type.rrd\n");
        &makerrd($machine, $type, $date, $step, @createdata);
    }
    # get the details out of the data we've been given
    my($updateparams) = "$date";
    foreach my $dataitem (@data) {
        if($dataitem =~ /^(\S+):\S+:\S+$/) {
            # pull the values straight out of the xmlhash
            my($value) = $xmlhash{$1};
            # if it's undefined we'll set it to 0
            # this probably shouldn't happen, but it'd be best to handle it "nicely" :)
            $value = "0" if not defined $value;
            $updateparams .= ":$value";
        }
    }
    # perform the update
    RRDs::update ("$rrddir/$machine/$type.rrd", $updateparams);
    &log("updating $rrddir/$machine/$type.rrd\n");
    my($err) = RRDs::error;
    &error("Error updating $rrddir/$machine/$type.rrd: $err\n") if $err;
}

#
# sub to create a new rrd file
#
# $machine = name of the machine
#            (eg. kernow.ukc.ac.uk)
# $type    = the type of graph for the machine
#            (eg. cpu)
# $start   = the date of the first item we want to add
#            (in seconds since the epoch)
# $step    = the interval at which the database steps
# @data    = the data items we want to put in the rrd
#            in the form: $dsname:dstype
#            (eg. "size:GAUGE")
#
sub makerrd() {
    my($machine, $type, $start, $step, @data) = @_;
    # check if directory exists for rrd
    if(! -d "$rrddir/$machine") {
        # not sure on this umask, but it seems to work?
        mkdir "$rrddir/$machine", 0777;
        &log("created directory $rrddir/$machine\n");
    }
    my(@rrdcmd);
    # we'll want to add our first data item at $start,
    # so we start our rrd $step before that.
    $start -= $step;
    push @rrdcmd, "$rrddir/$machine/$type.rrd";
    push @rrdcmd, "--start=$start";
    push @rrdcmd, "--step=$step";
    foreach my $dataitem (@data) {
        # dataitem should be: "dsname:dstype"
        if($dataitem =~ /^(\S+):(\S+)$/) {
            push @rrdcmd, "DS:$1:$2:600:U:U";
        }
    }
    push @rrdcmd, (
        # 3h in 15s samples
        "RRA:AVERAGE:0.5:1:720",
        "RRA:MAX:0.5:1:720",
        # 1d in 2m samples
        "RRA:AVERAGE:0.5:8:720",
        "RRA:MAX:0.5:8:720",
        # 1w in 15m samples
        "RRA:AVERAGE:0.5:60:672",
        "RRA:MAX:0.5:60:672",
        # 1m in 1hr samples
        "RRA:AVERAGE:0.5:240:744",
        "RRA:MAX:0.5:240:744",
        # 1y in 12hr samples
        "RRA:AVERAGE:0.5:2880:730",
        "RRA:MAX:0.5:2880:730",
    );
    RRDs::create (@rrdcmd);
    my($err) = RRDs::error;
    &error("Error creating rrd for $rrddir/$machine/$type: $err\n") if $err;
}

# prints out usage information then exits
sub usage() {
    print "Usage: watch.pl [options] i-scream_client_interface port\n";
    print "Options\n";
    print "  -c config        Specifies the configuration file\n";
    print "                    default: rrdgraphing.conf\n";
    print "  -v               Be verbose about what's happening\n";
    print "  -q               Be quiet, even supress errors\n";
    print "  -V               Print version number\n";
    print "  -h               Prints this help page\n";
    exit(1);
}

# prints a log message if verbose is turned on
sub log() {
    my($msg) = @_;
    print $msg if $verbose;
}

# prints an error message unless quiet is turned on
sub error() {
    my($msg) = @_;
    print STDERR $msg unless $quiet;
}
Revision:	1.11
Committed:	Wed Jun 15 15:39:25 2005 UTC (19 years, 6 months ago) by tdb
Content type:	text/plain
Branch:	MAIN
Changes since 1.10:	+4 -4 lines
Log Message:	Get the brackets the right way round. Skel spotted his own problem :) I should probably have checked a bit more closely ;)
#	User	Rev	Content
1	tdb	1.1	#!/usr/bin/perl -w
2
3	tdb	1.2	#
4			# i-scream central monitoring system
5	tdb	1.8	# http://www.i-scream.org
6	tdb	1.2	# 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	tdb	1.1	# -----------------------------------------------------------
24			# i-scream graph generation scripts
25	tdb	1.8	# http://www.i-scream.org
26	tdb	1.1	#
27			# Generates rrd databases for i-scream data by connecting to
28			# the i-scream server and collecting data.
29			#
30			# $Author: tdb $
31	tdb	1.11	# $Id: watch.pl,v 1.10 2005/06/15 10:41:25 tdb Exp $
32	tdb	1.1	#------------------------------------------------------------
33
34	tdb	1.11	my($version) = '$Id: watch.pl,v 1.10 2005/06/15 10:41:25 tdb Exp $';
35	tdb	1.1
36			$\| = 1;
37
38			use strict;
39	tdb	1.3	use Getopt::Std;
40			use IO::Socket;
41	tdb	1.1	use iscream::XMLParser;
42			use RRDs;
43
44	tdb	1.3	# define variables that will be read from the config
45			# nb. keep this insync with the config file!
46	tdb	1.9	use vars qw{
47			$imgdir $rrddir
48	tdb	1.3	$maxrrdage $maximgage $deleterrds $deleteimgs
49	tdb	1.10	$hex_slash $hex_underscore $hex_space $hex_colon $hex_bslash $hex_rbracket
50			$hex_lbracket $hex_plus
51	tdb	1.3	$rrdstep $retry_wait
52			$verbose $quiet
53			};
54
55			# default locate of the config file
56			my($configfile) = "rrdgraphing.conf";
57
58			# check for command line arguments
59			my(%opts);
60			my($ret) = getopts('hvqVc:', \%opts);
61
62			# if invalid argument given, $ret will not be 1
63			&usage() if $ret != 1;
64
65			# first process the arguments which might mean we exit now
66
67			# -h is usage
68			if($opts{h}) {
69			&usage();
70			}
71			# -V is version
72			if($opts{V}) {
73			print "watch.pl version: $version\n";
74			exit(1);
75			}
76	tdb	1.1
77	tdb	1.3	# Then try getting the config
78	tdb	1.1
79	tdb	1.3	# -c specifies the config file location
80			if($opts{c}) {
81			$configfile = $opts{c};
82			}
83			# suck in the config
84			&log("reading config from $configfile\n");
85			do $configfile;
86
87			# Then any options we might want to override the config with
88
89			# -v is verbose
90			if($opts{v}) {
91			$verbose = $opts{v};
92			}
93			# -q is verbose
94			if($opts{q}) {
95			$quiet = $opts{q};
96			# if we're meant to be quiet, we can hardly be verbose!
97			# $verbose = 0;
98			}
99	tdb	1.1
100	tdb	1.3	# Finally check for required arguments
101
102			# check we still have two arguments left
103	tdb	1.1	if (@ARGV != 2) {
104	tdb	1.3	&usage();
105	tdb	1.1	}
106
107			# user supplied client interface server and port
108			my($addr) = $ARGV[0];
109			my($cport) = $ARGV[1];
110
111	tdb	1.3
112			# Main program loop
113	tdb	1.1	while(1) {
114
115	tdb	1.3	&log("Connecting control channel to port $cport on $addr...\n");
116	tdb	1.1
117			# attempt to connect the control channel
118			my($csock) = new IO::Socket::INET(
119			PeerAddr => $addr,
120			PeerPort => $cport,
121			Proto => 'tcp'
122			);
123
124			# if socket isn't defined connection failed
125			if (!defined $csock) {
126	tdb	1.3	&error("ERROR: Could not connect control channel to $addr:$cport.\n");
127			&error("Please check that there is an i-scream server at this address.\n");
128	tdb	1.1	&wait_then_retry();
129			next;
130			}
131
132			my($response);
133
134			# client interface should send it's protocol ID
135			# we know about "PROTOCOL 1.1", and will only accept the same
136			$response = <$csock>;
137	tdb	1.3	&log("CLI sent: $response");
138	tdb	1.1	if ($response && $response ne "PROTOCOL 1.1\n") {
139	tdb	1.3	&error("The i-scream server sent an unexpected protocol ID: $response\n");
140	tdb	1.1	close($csock);
141			&wait_then_retry();
142			next;
143			}
144
145			# send our identifier to the client interface
146			print $csock "rrdgraphing\n";
147	tdb	1.3	&log("we sent: rrdgraphing\n");
148	tdb	1.1	$response = <$csock>;
149	tdb	1.3	&log("CLI sent: $response");
150	tdb	1.1	if ($response && $response ne "OK\n") {
151	tdb	1.3	&error("Received unexpected response: $response\n");
152	tdb	1.1	close($csock);
153			&wait_then_retry();
154			next;
155			}
156
157			# tell the client interface we'd like to start the data channel
158			print $csock "STARTDATA\n";
159	tdb	1.3	&log("we sent: STARTDATA\n");
160
161	tdb	1.1	# the response should be the socket to connect the data channel to
162			$response = <$csock>;
163	tdb	1.3	&log("CLI sent: $response");
164	tdb	1.1	chomp $response;
165
166			my($dport) = $response;
167	tdb	1.3	&log("Connecting data channel to port $dport on $addr...\n");
168	tdb	1.1
169			# attempt to connect the data channel
170			my($dsock) = new IO::Socket::INET(
171			PeerAddr => $addr,
172			PeerPort => $dport,
173			Proto => 'tcp'
174			) or die "arse?";
175
176			# if socket isn't defined connection failed
177			if (!defined $dsock) {
178	tdb	1.3	&error("ERROR: Could not connect data channel to $addr:$dport.\n");
179			&error("Failure in communications.\n");
180	tdb	1.1	close($csock);
181			&wait_then_retry();
182			next;
183			}
184
185			# the data channel should now be sending us data!
186
187			# call sub to process data being received over the data channel
188			&processdata($dsock);
189
190			# data processing has stopped, close sockets
191			close($csock);
192			close($dsock);
193
194			# wait before retrying
195			&wait_then_retry();
196			}
197
198			# we'll never reach here... unless 1 becomes false for some reason ;)
199			exit 0;
200
201
202			#
203			# wait for a while before retrying
204			#
205			sub wait_then_retry() {
206	tdb	1.3	&error("Will retry connection to i-scream server in $retry_wait seconds.\n\n");
207	tdb	1.1	sleep $retry_wait;
208			}
209
210			#
211			# Given the socket of the data channel will process all
212			# the incoming XML data, creating and updating the appropriate
213			# database files.
214			#
215			# $dsock = socket connected to the data channel
216			#
217			sub processdata() {
218			# the socket connected to the data channel
219			my($dsock) = @_;
220			# save us recreating this variable each time we loop
221			my($xml);
222
223			while(1) {
224			# read data
225			$xml = <$dsock>;
226
227			# something odd has happened
228			last if not defined $xml;
229
230			# attempt to parse the data
231			my($err, %xmlhash) = &iscream::XMLParser::parse($xml);
232			if($err) {
233	tdb	1.3	&error("Skipped, XML did not parse: $xml");
234	tdb	1.1	next;
235			}
236
237			# standard data packet
238			if($xmlhash{"packet.attributes.type"} eq "data") {
239			my($machine) = $xmlhash{"packet.attributes.machine_name"};
240			my($date) = $xmlhash{"packet.attributes.date"};
241
242			# make directory for machine
243			if(! -d "$rrddir/$machine") {
244			# not sure on this umask, but it seems to work?
245			mkdir "$rrddir/$machine", 0777;
246	tdb	1.3	&log("created directory $rrddir/$machine\n");
247	tdb	1.1	}
248
249			my(@data);
250
251			# cpu
252			@data = ( "packet.cpu.idle:idle:GAUGE",
253			"packet.cpu.user:user:GAUGE",
254			"packet.cpu.kernel:kernel:GAUGE",
255			"packet.cpu.swap:swap:GAUGE",
256			"packet.cpu.iowait:iowait:GAUGE",
257			);
258			&updaterrd($machine, "cpu", $date, $rrdstep, \%xmlhash, @data);
259
260	tdb	1.9	# uptime
261			@data = ( "packet.os.uptime:uptime:GAUGE" );
262			&updaterrd($machine, "uptime", $date, $rrdstep, \%xmlhash, @data);
263
264	tdb	1.1	# mem
265			@data = ( "packet.memory.free:free:GAUGE",
266			"packet.memory.total:total:GAUGE",
267	tdb	1.7	"packet.memory.cache:cache:GAUGE",
268	tdb	1.1	);
269			&updaterrd($machine, "mem", $date, $rrdstep, \%xmlhash, @data);
270
271			# load
272			@data = ( "packet.load.load1:load1:GAUGE",
273			"packet.load.load5:load5:GAUGE",
274			"packet.load.load15:load15:GAUGE",
275			);
276			&updaterrd($machine, "load", $date, $rrdstep, \%xmlhash, @data);
277
278			# processes
279			@data = ( "packet.processes.cpu:cpu:GAUGE",
280			"packet.processes.sleeping:sleeping:GAUGE",
281			"packet.processes.stopped:stopped:GAUGE",
282			"packet.processes.total:total:GAUGE",
283			"packet.processes.zombie:zombie:GAUGE",
284			);
285			&updaterrd($machine, "proc", $date, $rrdstep, \%xmlhash, @data);
286
287			# swap
288			@data = ( "packet.swap.free:free:GAUGE",
289			"packet.swap.total:total:GAUGE",
290			);
291			&updaterrd($machine, "swap", $date, $rrdstep, \%xmlhash, @data);
292
293			# users
294			@data = ( "packet.users.count:count:GAUGE",
295			);
296			&updaterrd($machine, "users", $date, $rrdstep, \%xmlhash, @data);
297	tdb	1.5
298			# paging
299	tdb	1.6	@data = ( "packet.pages.pageins:pageins:GAUGE",
300			"packet.pages.pageouts:pageouts:GAUGE",
301	tdb	1.5	);
302			&updaterrd($machine, "paging", $date, $rrdstep, \%xmlhash, @data);
303
304	tdb	1.1	# disk
305			my($i) = 0;
306			while(defined $xmlhash{"packet.disk.p$i.attributes.mount"}) {
307			my($mount) = $xmlhash{"packet.disk.p$i.attributes.mount"};
308			$mount =~ s/_/$hex_underscore/g;
309			$mount =~ s/\//$hex_slash/g;
310	tdb	1.9	$mount =~ s/\\/$hex_bslash/g;
311			$mount =~ s/ /$hex_space/g;
312			$mount =~ s/:/$hex_colon/g;
313	tdb	1.6	@data = ( "packet.disk.p$i.attributes.total:total:GAUGE",
314	tdb	1.1	"packet.disk.p$i.attributes.used:used:GAUGE",
315	tdb	1.5	"packet.disk.p$i.attributes.totalinodes:totalinodes:GAUGE",
316			"packet.disk.p$i.attributes.freeinodes:freeinodes:GAUGE",
317	tdb	1.1	);
318			&updaterrd($machine, "disk-$mount", $date, $rrdstep, \%xmlhash, @data);
319			++$i;
320	tdb	1.6	}
321
322			# diskio
323			$i = 0;
324			while(defined $xmlhash{"packet.diskio.p$i.attributes.name"}) {
325			my($name) = $xmlhash{"packet.diskio.p$i.attributes.name"};
326	tdb	1.9	$name =~ s/_/$hex_underscore/g;
327			$name =~ s/\//$hex_slash/g;
328			$name =~ s/\\/$hex_bslash/g;
329			$name =~ s/ /$hex_space/g;
330			$name =~ s/:/$hex_colon/g;
331	tdb	1.6	@data = ( "packet.diskio.p$i.attributes.rbytes:rbytes:GAUGE",
332			"packet.diskio.p$i.attributes.wbytes:wbytes:GAUGE",
333			);
334			&updaterrd($machine, "diskio-$name", $date, $rrdstep, \%xmlhash, @data);
335			++$i
336			}
337
338			# net
339			$i = 0;
340			while(defined $xmlhash{"packet.net.p$i.attributes.name"}) {
341			my($name) = $xmlhash{"packet.net.p$i.attributes.name"};
342	tdb	1.9	$name =~ s/_/$hex_underscore/g;
343			$name =~ s/\//$hex_slash/g;
344			$name =~ s/\\/$hex_bslash/g;
345			$name =~ s/ /$hex_space/g;
346			$name =~ s/:/$hex_colon/g;
347	tdb	1.11	$name =~ s/\(/$hex_lbracket/g;
348			$name =~ s/\)/$hex_rbracket/g;
349	tdb	1.10	$name =~ s/\+/$hex_plus/g;
350	tdb	1.6	@data = ( "packet.net.p$i.attributes.rx:rx:GAUGE",
351			"packet.net.p$i.attributes.tx:tx:GAUGE",
352			);
353	tdb	1.7	&updaterrd($machine, "net-$name", $date, $rrdstep, \%xmlhash, @data);
354			++$i
355			}
356
357			# mailq
358			$i = 0;
359			while(defined $xmlhash{"packet.mailq.p$i.attributes.name"}) {
360			my($name) = $xmlhash{"packet.mailq.p$i.attributes.name"};
361	tdb	1.9	$name =~ s/\s+//g;
362	tdb	1.7	@data = ( "packet.mailq.p$i.attributes.size:size:GAUGE",
363			);
364			&updaterrd($machine, "mailq-$name", $date, $rrdstep, \%xmlhash, @data);
365	tdb	1.6	++$i
366	tdb	1.1	}
367			}
368
369			# queue statistics packet
370			elsif($xmlhash{"packet.attributes.type"} eq "queueStat") {
371			# psuedo machine for internal server stuff
372			my($machine) = "i-scream-server";
373			# make directory
374			if(! -d "$rrddir/$machine") {
375			# not sure on this umask, but it seems to work?
376			mkdir "$rrddir/$machine", 0777;
377	tdb	1.3	&log("created directory $rrddir/$machine\n");
378	tdb	1.1	}
379			my($hash) = $xmlhash{"packet.attributes.hashCode"};
380			my($date) = $xmlhash{"packet.attributes.date"};
381			my($name) = $xmlhash{"packet.attributes.name"};
382			# take a look to see if we have a shutdown packet...
383			if($xmlhash{"packet.attributes.shutdown"} && $xmlhash{"packet.attributes.shutdown"} eq "true") {
384			unlink <$rrddir/$machine/$hash\_.rrd>, "$rrddir/$machine/$hash.def", <$imgdir/$machine/$hash.png>;
385	tdb	1.3	&log("deleted $rrddir/$machine/$hash\_.rrd $rrddir/$machine/$hash.def $imgdir/$machine/$hash.png\n");
386	tdb	1.1	next;
387			}
388			# look through to see how many internal queues we have
389			my($i) = 0;
390			while(defined $xmlhash{"packet.queue.attributes.queue$i"}) {
391			# see if the queue has been removed
392			if($xmlhash{"packet.queue.attributes.queue$i"} eq "[deleted]") {
393			# delete the queues rrd
394			unlink "$rrddir/$machine/$hash\_$i.rrd";
395	tdb	1.3	&log("deleted $rrddir/$machine/$hash\_$i.rrd\n");
396	tdb	1.1	# are there any other rrd's left on this queue? if not, cleanup.
397			# get a list of any that may be still there..
398			opendir(DIR, "$rrddir/$machine");
399			my(@rrdcountfiles) = grep { -f "$rrddir/$machine/$_" && /^$hash\_\d+.rrd$/ } readdir(DIR);
400			closedir DIR;
401			# count them (+1 because an empty array is size -1)
402			my($rrdcount) = $#rrdcountfiles + 1;
403			if($rrdcount == 0) {
404			# clean up the def file and any images
405			unlink "$rrddir/$machine/$hash.def", <$imgdir/$machine/$hash*.png>;
406	tdb	1.3	&log("deleted $rrddir/$machine/$hash.def $imgdir/$machine/$hash*.png\n");
407	tdb	1.1	}
408			++$i;
409			next;
410			}
411			# the &updaterrd will also do this check, but we want
412			# to write our def file out first
413			if( ! -f "$rrddir/$machine/$hash\_$i.rrd" ) {
414			open(DEF, ">$rrddir/$machine/$hash.def");
415			print DEF $name;
416			close DEF;
417	tdb	1.3	&log("created $rrddir/$machine/$hash.def\n");
418	tdb	1.1	}
419			my(@data) = ( "packet.queue.attributes.queue$i:size:GAUGE",
420			"packet.queue.attributes.total:total:COUNTER",
421			);
422			&updaterrd($machine, "$hash\_$i", $date, $rrdstep, \%xmlhash, @data);
423			++$i;
424			}
425			}
426			else {
427	tdb	1.3	#&error("SKIPPED: valid xml, but not a data or statistics packet\n");
428	tdb	1.1	}
429			}
430
431			# we'll now return from this sub and reconnect
432	tdb	1.3	&error("Data channel socket gave no data, bailing out...\n");
433	tdb	1.1	}
434
435			#
436			# sub to update an rrd file
437			#
438			# $machine = name of the machine
439			# (eg. kernow.ukc.ac.uk)
440			# $type = the type of graph for the machine
441			# (eg. cpu)
442			# $date = the date of the item we want to add
443			# (in seconds since the epoch)
444			# $step = the interval at which the database steps
445			# used when we create a new rrd
446			# $xmlref = reference to the xml data packet
447			# @data = array containing data items to add
448			# (eg. "packet.cpu.user:user:GAUGE")
449			#
450			sub updaterrd() {
451			my($machine, $type, $date, $step, $xmlref, @data) = @_;
452			# get hold of the xmlhash we have a reference to
453			my(%xmlhash) = %$xmlref;
454			# check if we need to create a new rrd
455			if( ! -f "$rrddir/$machine/$type.rrd") {
456			my(@createdata);
457			# pull the details out of the data we've been given
458			foreach my $dataitem (@data) {
459			if($dataitem =~ /^\S+:(\S+):(\S+)$/) {
460			push @createdata, "$1:$2";
461			}
462			}
463			# call the &makerrd to actually create the rrd
464	tdb	1.3	&log("making new rrd for $rrddir/$machine/$type.rrd\n");
465	tdb	1.1	&makerrd($machine, $type, $date, $step, @createdata);
466			}
467			# get the details out of the data we've been given
468			my($updateparams) = "$date";
469			foreach my $dataitem (@data) {
470			if($dataitem =~ /^(\S+):\S+:\S+$/) {
471			# pull the values straight out of the xmlhash
472			my($value) = $xmlhash{$1};
473			# if it's undefined we'll set it to 0
474			# this probably shouldn't happen, but it'd be best to handle it "nicely" :)
475			$value = "0" if not defined $value;
476			$updateparams .= ":$value";
477			}
478			}
479			# perform the update
480			RRDs::update ("$rrddir/$machine/$type.rrd", $updateparams);
481	tdb	1.3	&log("updating $rrddir/$machine/$type.rrd\n");
482	tdb	1.1	my($err) = RRDs::error;
483	tdb	1.3	&error("Error updating $rrddir/$machine/$type.rrd: $err\n") if $err;
484	tdb	1.1	}
485
486			#
487			# sub to create a new rrd file
488			#
489			# $machine = name of the machine
490			# (eg. kernow.ukc.ac.uk)
491			# $type = the type of graph for the machine
492			# (eg. cpu)
493			# $start = the date of the first item we want to add
494			# (in seconds since the epoch)
495			# $step = the interval at which the database steps
496			# @data = the data items we want to put in the rrd
497			# in the form: $dsname:dstype
498			# (eg. "size:GAUGE")
499			#
500			sub makerrd() {
501			my($machine, $type, $start, $step, @data) = @_;
502			# check if directory exists for rrd
503			if(! -d "$rrddir/$machine") {
504			# not sure on this umask, but it seems to work?
505			mkdir "$rrddir/$machine", 0777;
506	tdb	1.3	&log("created directory $rrddir/$machine\n");
507	tdb	1.1	}
508			my(@rrdcmd);
509			# we'll want to add our first data item at $start,
510			# so we start our rrd $step before that.
511			$start -= $step;
512			push @rrdcmd, "$rrddir/$machine/$type.rrd";
513			push @rrdcmd, "--start=$start";
514			push @rrdcmd, "--step=$step";
515			foreach my $dataitem (@data) {
516			# dataitem should be: "dsname:dstype"
517			if($dataitem =~ /^(\S+):(\S+)$/) {
518			push @rrdcmd, "DS:$1:$2:600:U:U";
519			}
520			}
521			push @rrdcmd, (
522			# 3h in 15s samples
523			"RRA:AVERAGE:0.5:1:720",
524			"RRA:MAX:0.5:1:720",
525			# 1d in 2m samples
526			"RRA:AVERAGE:0.5:8:720",
527			"RRA:MAX:0.5:8:720",
528			# 1w in 15m samples
529			"RRA:AVERAGE:0.5:60:672",
530			"RRA:MAX:0.5:60:672",
531			# 1m in 1hr samples
532			"RRA:AVERAGE:0.5:240:744",
533			"RRA:MAX:0.5:240:744",
534			# 1y in 12hr samples
535			"RRA:AVERAGE:0.5:2880:730",
536			"RRA:MAX:0.5:2880:730",
537			);
538			RRDs::create (@rrdcmd);
539			my($err) = RRDs::error;
540	tdb	1.3	&error("Error creating rrd for $rrddir/$machine/$type: $err\n") if $err;
541			}
542
543			# prints out usage information then exits
544			sub usage() {
545			print "Usage: watch.pl [options] i-scream_client_interface port\n";
546			print "Options\n";
547			print " -c config Specifies the configuration file\n";
548			print " default: rrdgraphing.conf\n";
549			print " -v Be verbose about what's happening\n";
550			print " -q Be quiet, even supress errors\n";
551			print " -V Print version number\n";
552			print " -h Prints this help page\n";
553			exit(1);
554			}
555
556			# prints a log message if verbose is turned on
557			sub log() {
558			my($msg) = @_;
559			print $msg if $verbose;
560			}
561
562			# prints an error message unless quiet is turned on
563			sub error() {
564			my($msg) = @_;
565			print STDERR $msg unless $quiet;
566	tdb	1.1	}