cgi

   1 #!/usr/bin/perl -w
   2
   3 use strict qw(vars);
   4 use CGI qw/:standard/;
   5
   6 sub fail ($) {
   7     print(header(-status=>500),
   8           start_html('Error'),
   9           h1('Error'),
  10           escapeHTML($_[0]),
  11           end_html());
  12     exit 0;
  13 }
  14
  15 our $R= '/var/lib/collectd/rrd/chiark.greenend.org.uk';
  16 our $SELF= '/home/ijackson/things/rrd-graphs';
  17
  18 my $self= url(-relative=>1);
  19
  20 our (@sections, %sections, %graphs);
  21
  22 our @timeranges= (3600, map { $_*86400 } qw(1 7 28), 13*7+1);
  23
  24 sub graph ($$$$) {
  25     my ($section, $gname, $basis, $args) = @_;
  26     $basis->{Args}= $args;
  27     $basis->{Slower}= 0 unless exists $basis->{Slower};
  28     $graphs{$section,$gname}= $basis;
  29     if (!exists $sections{$section}) {
  30         push @sections, $section;
  31     }
  32     push @{ $sections{$section} }, $gname;
  33 }
  34
  35 graph('General', 'Load', { },
  36       [
  37        "DEF:load=$R/load/load.rrd:shortterm:AVERAGE",
  38        (map { "DEF:$_=$R/processes/ps_state-$_.rrd:value:AVERAGE" }
  39             qw(blocked running stopped paging sleeping zombies)),
  40        "AREA:running#88f:running processes:STACK",
  41        "AREA:blocked#8f8:blocked processes:STACK",
  42        "AREA:paging#f88:paging processes:STACK",
  43        "LINE:load#000:load",
  44        ]);
  45
  46 graph('General', 'Processes', { },
  47       [
  48        (map { "DEF:$_=$R/processes/ps_state-$_.rrd:value:AVERAGE" }
  49             qw(blocked running stopped paging sleeping zombies)),
  50        "CDEF:busy=0".(join '', map { ",$_,+" } qw(running blocked paging)),
  51        "AREA:sleeping#ccc:sleeping:STACK",
  52        "AREA:stopped#00f:stopped:STACK",
  53        "AREA:zombies#ff0:zombie:STACK",
  54        "AREA:busy#000:busy:STACK",
  55        ]);
  56
  57 graph('General', 'CPU', { Units => '[%]' },
  58       [
  59        (map {
  60            my $thing= $_;
  61            (map { "DEF:$thing$_=$R/cpu-$_/cpu-$thing.rrd:value:AVERAGE" }
  62                 (0..7)),
  63            "CDEF:$thing=0".join('', map { ",$thing$_,+" } (0..7)).",8.0,/";
  64        } qw(idle interrupt nice softirq steal system user wait)),
  65        "AREA:system#00f:system:STACK",
  66        "AREA:wait#f88:wait:STACK",
  67        "AREA:nice#ccc:nice:STACK",
  68        "AREA:user#080:user:STACK",
  69        "AREA:softirq#f0f:softirq:STACK",
  70        "AREA:interrupt#ff0:interrupt:STACK",
  71        "AREA:steal#0ff:steal:STACK",
  72        ]);
  73
  74 graph('General', 'Memory', { },
  75       [ '-b',1024,
  76        (map { "DEF:swap_$_=$R/swap/swap-$_.rrd:value:AVERAGE" }
  77             qw(free used cached)),
  78        (map { "DEF:mem_$_=$R/memory/memory-$_.rrd:value:AVERAGE" }
  79             qw(buffered free used cached)),
  80        "CDEF:c_swap_used=0,swap_used,-",
  81        "CDEF:c_swap_cached=0,swap_cached,-",
  82        "CDEF:c_swap_free=0,swap_free,-",
  83        "AREA:c_swap_used#000:used swap",
  84        "AREA:c_swap_cached#888:\"cached\" swap:STACK",
  85 #       "AREA:c_swap_free#88f:free swap:STACK",
  86        "AREA:mem_used#ff0:used memory",
  87        "AREA:mem_buffered#00f:page cache:STACK",
  88        "AREA:mem_cached#008:buffer cache:STACK",
  89        "AREA:mem_free#ccc:unused memory:STACK",
  90        ]);
  91
  92 graph('General', 'Network', { Units => '[/sec; tx +ve; errs x1000]' },
  93       [
  94        (map {
  95            ("DEF:tx_$_=$R/interface/if_$_-eth0.rrd:tx:AVERAGE",
  96             "DEF:rx_$_=$R/interface/if_$_-eth0.rrd:rx:AVERAGE",
  97             "CDEF:mrx_$_=0,rx_$_,-")
  98            } qw(octets packets errors)),
  99        (map {
 100            ("CDEF:${_}_kb=${_}_octets,1024,/",
 101             "CDEF:${_}_errsx=${_}_errors,1000,*")
 102            } qw(mrx tx)),
 103        "AREA:tx_kb#080:kby",
 104        "LINE:tx_packets#0f0:pkts",
 105        "LINE:tx_errsx#000:errs",
 106        "AREA:mrx_kb#008:kby",
 107        "LINE:mrx_packets#00f:pkts",
 108        "LINE:mrx_errsx#444:errs",
 109       ]);
 110
 111 graph('General', 'Users', {  },
 112       [
 113        "DEF:users=$R/users/users.rrd:users:AVERAGE",
 114        "LINE:users#008:users"
 115        ]);
 116
 117 foreach my $src (<$R/df/df-*.rrd>) {
 118     my $vol= $src;
 119     $vol =~ s,.*/,,;
 120     $vol =~ s,^df-,,;
 121     $vol =~ s,\.rrd$,,;
 122     graph('Disk space', $vol, {
 123              Slower => 1,
 124           },
 125           [ '-A','-l',0,'-r',
 126            qw(-b 1024 -l 0),
 127            (map { "DEF:$_=$src:$_:AVERAGE" } qw(free used)),
 128            "AREA:used#000:used:STACK",
 129            "AREA:free#88f:free:STACK",
 130            ]);
 131 }
 132
 133 foreach my $src (<$SELF/news-stats/*.rrd>) {
 134     my $site= $src;
 135     $site =~ s,.*/,,;
 136     $site =~ s,\.rrd$,,;
 137     $site =~ s,_(in|out)$,,;
 138     my $inout= $1;
 139     $site =~ s/^([-.0-9a-z]+)_//;
 140     my $us= $1;
 141     graph('News',
 142           $inout eq 'out' ? "$us -> $site" : "$site -> $us",
 143           {
 144                 Slower => 1,
 145             }, $inout eq 'out' ?
 146           [
 147            (map { "DEF:$_=$src:$_:AVERAGE" }
 148                 qw(missing offered deferred unwanted accepted
 149                    rejected body_missing)),
 150            "AREA:accepted#00f:ok",
 151            "AREA:body_missing#ff0:missing:STACK",
 152            "AREA:rejected#f00:rej:STACK",
 153            "AREA:unwanted#bbb:unw:STACK",
 154            "AREA:deferred#eee:deferred:STACK",
 155            "LINE:offered#080:",
 156            ] :
 157           [
 158            (map { "DEF:$_=$src:$_:AVERAGE" }
 159                 qw(accepted refused rejected duplicate)),
 160            (map { ("DEF:bytes_$_=$src:${_}_size:AVERAGE",
 161                    "CDEF:kb_$_=bytes_$_,1024,/")
 162               } qw(accepted duplicate)),
 163            "AREA:accepted#00f:ok:STACK",
 164            "AREA:rejected#f00:rej:STACK",
 165            "AREA:duplicate#000:dupe:STACK",
 166            "AREA:refused#bbb:unw:STACK",
 167            "LINE:kb_duplicate#ff0:kb dupe",
 168            "LINE:kb_accepted#008:kb",
 169            ]);
 170 }
 171
 172 if (param('debug')) {
 173     print "Content-Type: text/plain\n\n";
 174 }
 175
 176 our @navsettings;
 177
 178 sub navsetting ($) {
 179     my ($nav) = @_;
 180     my $var= $nav->{Variable};
 181     $$var= param($nav->{Param});
 182     $$var= $nav->{Default} if !defined $$var;
 183     die $nav->{Param} unless grep { $_ eq $$var } @{ $nav->{Values} };
 184     push @navsettings, $nav;
 185 }
 186
 187 our $section;
 188
 189 navsetting({
 190     Desc => 'Section',
 191     Param => 'section',
 192     Variable => \$section,
 193     Default => $sections[0],
 194     Values => [@sections],
 195     Show => sub { return $_[0]; }
 196 });
 197
 198
 199 my $gname= param('graph');
 200
 201 sub num_param ($$$$) {
 202     my ($param,$def,$min,$max) = @_;
 203     my $v= param($param);
 204     return $def if !defined $v;
 205     $v =~ m/^([1-9]\d{0,8})$/ or die;
 206     $v= $1;
 207     die unless $v >= $min && $v <= $max;
 208     return $v + 0;
 209 }
 210
 211 if ($gname) {
 212     my $g= $graphs{$section,$gname};
 213     die unless $g;
 214
 215     my @args= @{ $g->{Args} };
 216
 217     my $width= num_param('w',370,100,1600);
 218     my $height= num_param('h',200,100,1600);
 219
 220     my $end= param('end');
 221     if (defined $end) {
 222         $end =~ m/^(\d+)$/ or die;
 223         unshift @args, qw(--end now --start), "end-${end}s";
 224     }
 225     if (param('debug')) {
 226         print((join "\n",@args),"\n"); exit 0;
 227     }
 228     print "Content-Type: image/png\n\n";
 229
 230     my $title= $gname;
 231     $title .= " $g->{Units}" if $g->{Units};
 232     unshift @args, '-t', $title;
 233
 234     exec (qw(rrdtool graph - -a PNG --full-size-mode),
 235           '-w',$width, '-h',$height,
 236           @args);
 237     die $!;
 238 }
 239
 240 sub start_page ($) {
 241     my ($title) = @_;
 242     print header(), start_html($title);
 243     my $outerdelim= '';
 244     foreach my $nav (@navsettings) {
 245         print $outerdelim;
 246         print $nav->{Desc}, ": ";
 247         my $delim= '';
 248         my $current= $nav->{Variable};  $current= $$current;
 249         foreach my $couldbe (@{ $nav->{Values} }) {
 250             print $delim;
 251             my $show= $nav->{Show}($couldbe);
 252             if ($couldbe eq $current) {
 253                 print "<b>$show</b>";
 254             } else {
 255                 print "<a href=\"$self";
 256                 my $delim2= '?';
 257                 foreach my $nav2 (@navsettings) {
 258                     my $current2= $nav2->{Variable};  $current2= $$current2;
 259                     $current2= $couldbe if $nav2->{Param} eq $nav->{Param};
 260                     next if $current2 eq $nav2->{Default};
 261                     print $delim2, "$nav2->{Param}=$current2";
 262                     $delim2= '&';
 263                 }
 264                 print "\">$show</a>";
 265             }
 266             $delim= ' | ';
 267         }
 268         $outerdelim= "<br>\n";
 269     }
 270     print "\n";
 271
 272     print h1("$title");
 273 }
 274
 275 my $detail= param('detail');
 276 if ($detail) {
 277     my $g= $graphs{$section,$detail};
 278     die unless $g;
 279     start_page("$detail graphs");
 280     foreach my $end (@timeranges[$g->{Slower}..$g->{Slower}+3]) {
 281         my $imgurl= "$self?graph=$detail&section=$section&end=$end";
 282         print "<a href=\"$imgurl&w=780&h=800\"><img src=\"$imgurl\"></a>\n";
 283     }
 284     print end_html();
 285     exit 0;
 286 }
 287
 288 our $sloth;
 289
 290 navsetting({
 291     Desc => 'Time interval',
 292     Param => 'sloth',
 293     Variable => \$sloth,
 294     Default => 1,
 295     Values => [0..2],
 296     Show => sub {
 297         my ($sl) = @_;
 298         return ('Narrower', 'Normal', 'Wider')[$sl];
 299     }
 300 });
 301
 302 if (param('debug')) {
 303     use Data::Dumper;
 304     print Dumper(\%graphs);
 305     exit 0;
 306 }
 307
 308 start_page("$section graphs");
 309
 310 foreach my $gname (@{ $sections{$section} }) {
 311     my $g= $graphs{$section,$gname};
 312     print "<a href=\"$self?detail=$gname&section=$section\">";
 313     my $end= $timeranges[$g->{Slower}+$sloth];
 314     my $imgurl= "$self?graph=$gname&section=$section&end=$end";
 315     print "<img src=\"$imgurl\"></a>\n";
 316 }
 317