cgi

   1 #!/usr/bin/perl -w
   2
   3 use strict qw(vars);
   4 use CGI qw/:standard -no_xhtml/;
   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, %section_groups, %group_elems, %graphs);
  21
  22 our @timeranges= (3600, map { $_*86400 } qw(1 7 28), 13*7+1, 366);
  23
  24 sub graph_of_group ($$$$$) {
  25     my ($section, $group, $elem, $basis, $args) = @_;
  26     $basis->{Args}= $args;
  27     $basis->{Slower}= 0 unless exists $basis->{Slower};
  28     $basis->{TimeRanges} ||= \@timeranges;
  29     $graphs{$section,$group,$elem}= $basis;
  30     if (!exists $group_elems{$section,$group}) {
  31         # new group then
  32         if (!exists $section_groups{$section}) {
  33             # new section even
  34             push @sections, $section;
  35         }
  36         push @{ $section_groups{$section} }, $group;
  37     }
  38     push @{ $group_elems{$section,$group} }, $elem;
  39 }
  40
  41 sub graph ($$$$) {
  42     my ($section, $gname, $basis, $args) = @_;
  43     graph_of_group($section, $gname,'', $basis, $args);
  44 }
  45
  46 graph('General', 'Load and processes', { },
  47       [
  48        "DEF:load=$R/load/load.rrd:shortterm:AVERAGE",
  49        (map { "DEF:$_=$R/processes/ps_state-$_.rrd:value:AVERAGE" }
  50             qw(blocked running stopped paging sleeping zombies)),
  51        "AREA:running#88f:running:STACK",
  52        "AREA:blocked#8f8:disk wait:STACK",
  53        "AREA:paging#f88:paging:STACK",
  54        "LINE:load#000:load",
  55        ]);
  56
  57 graph('General', 'Processes', { },
  58       [
  59        (map { "DEF:$_=$R/processes/ps_state-$_.rrd:value:AVERAGE" }
  60             qw(blocked running stopped paging sleeping zombies)),
  61        "CDEF:busy=0".(join '', map { ",$_,+" } qw(running blocked paging)),
  62        "AREA:sleeping#ccc:sleeping:STACK",
  63        "AREA:stopped#00f:stopped:STACK",
  64        "AREA:zombies#ff0:zombie:STACK",
  65        "AREA:busy#000:busy:STACK",
  66        ]);
  67
  68 graph('General', 'CPU', { Units => '[%]' },
  69       [
  70        (map {
  71            my $thing= $_;
  72            (map { "DEF:$thing$_=$R/cpu-$_/cpu-$thing.rrd:value:AVERAGE" }
  73                 (0..7)),
  74            "CDEF:$thing=0".join('', map { ",$thing$_,+" } (0..7)).",8.0,/";
  75        } qw(idle interrupt nice softirq steal system user wait)),
  76        "CDEF:allintr=softirq,steal,+,interrupt,+",
  77        "AREA:system#88f:system:STACK",
  78        "AREA:allintr#ff0:interrupt:STACK",
  79        "AREA:user#00f:user:STACK",
  80        "AREA:nice#ccc:nice:STACK",
  81        "AREA:wait#f00:wait:STACK",
  82        ]);
  83
  84 graph('General', 'Memory', { },
  85       [ '-b',1024,
  86        (map { "DEF:swap_$_=$R/swap/swap-$_.rrd:value:AVERAGE" }
  87             qw(free used cached)),
  88        (map { "DEF:mem_$_=$R/memory/memory-$_.rrd:value:AVERAGE" }
  89             qw(buffered free used cached)),
  90        "CDEF:c_swap_used=0,swap_used,-",
  91        "CDEF:c_swap_cached=0,swap_cached,-",
  92        "CDEF:c_swap_free=0,swap_free,-",
  93        "AREA:c_swap_used#000:used swap",
  94        "AREA:c_swap_cached#888:\"cached\" swap:STACK",
  95 #       "AREA:c_swap_free#88f:free swap:STACK",
  96        "AREA:mem_used#ff0:used memory",
  97        "AREA:mem_buffered#00f:page cache:STACK",
  98        "AREA:mem_cached#008:buffer cache:STACK",
  99        "AREA:mem_free#ccc:unused memory:STACK",
 100        ]);
 101
 102 graph('General', 'Network', { Units => '[/sec; tx +ve; errs x1000]' },
 103       [
 104        (map {
 105            ("DEF:tx_$_=$R/interface/if_$_-eth0.rrd:tx:AVERAGE",
 106             "DEF:rx_$_=$R/interface/if_$_-eth0.rrd:rx:AVERAGE",
 107             "CDEF:mrx_$_=0,rx_$_,-")
 108            } qw(octets packets errors)),
 109        (map {
 110            ("CDEF:${_}_kb=${_}_octets,1024,/",
 111             "CDEF:${_}_errsx=${_}_errors,1000,*")
 112            } qw(mrx tx)),
 113        "AREA:tx_kb#080:kby",
 114        "LINE:tx_packets#0f0:pkts",
 115        "LINE:tx_errsx#000:errs",
 116        "AREA:mrx_kb#008:kby",
 117        "LINE:mrx_packets#00f:pkts",
 118        "LINE:mrx_errsx#444:errs",
 119       ]);
 120
 121 graph('General', 'Users', {  },
 122       [
 123        "DEF:users=$R/users/users.rrd:users:AVERAGE",
 124        "LINE:users#008:users"
 125        ]);
 126
 127 foreach my $src (<$R/df/df-*.rrd>) {
 128     my $vol= $src;
 129     $vol =~ s,\.rrd$,, or next;
 130     $vol =~ s,.*/,,;
 131     $vol =~ s,^df-,,;
 132     graph('Disk space', $vol, {
 133              Slower => 1,
 134           },
 135           [ '-A','-l',0,'-r',
 136            qw(-b 1024 -l 0),
 137            (map { "DEF:$_=$src:$_:AVERAGE" } qw(free used)),
 138            "AREA:used#000:used:STACK",
 139            "AREA:free#88f:free:STACK",
 140            ]);
 141 }
 142
 143 our %news_name_map;
 144
 145 if (!open NM, '<', "$SELF/data/news/name-map") {
 146     die unless $!==&ENOENT;
 147 } else {
 148     while (<NM>) {
 149         s/^\s*//; s/\s+$//;
 150         next unless m/^[^\#]/;
 151         m/^(\S+)\s+(in|out|\*)\s+(\S+)$/ or die;
 152         if ($2 eq '*') {
 153             $news_name_map{$1,$_}= $3 foreach qw(in out);
 154         } else {
 155             $news_name_map{$1,$2}= $3;
 156         }
 157     }
 158 }
 159
 160 sub news_name_sortkey {
 161     return join '.', reverse split /\./, $_[0];
 162 }
 163
 164 foreach my $src (sort { news_name_sortkey($a) cmp news_name_sortkey($b) }
 165                  <$SELF/data/news/*.rrd>) {
 166     my $site= $src;
 167     $site =~ s,\.rrd$,, or next;
 168     $site =~ s,.*/,,;
 169     $site =~ s,_(in|out)$,,;
 170     my $inout= $1;
 171     $site =~ s/^([-.0-9a-z]+)_//;
 172     my $us= $1; # all very well but we ignore it
 173     my $newsite= $news_name_map{$site,$inout};
 174     $site= $newsite if defined $newsite;
 175     next if $site eq '-';
 176     graph_of_group("News", $site, $inout,
 177           {
 178                 Units => '[art/s]',
 179                 TimeRanges => [ map { $_*86400 } qw(1 7 31), 366, 366*3 ]
 180             }, $inout eq 'out' ?
 181           [
 182            (map { "DEF:$_=$src:$_:AVERAGE" }
 183                 qw(missing deferred unwanted accepted rejected body_missing)),
 184            "AREA:accepted#00f:ok",
 185            "AREA:body_missing#ff0:miss:STACK",
 186            "AREA:rejected#f00:rej:STACK",
 187            "AREA:unwanted#aaa:unw:STACK",
 188            "AREA:deferred#ddd:defer:STACK",
 189            ] :
 190           [
 191            (map { "DEF:$_=$src:$_:AVERAGE" }
 192                 qw(accepted refused rejected duplicate)),
 193            (map { ("DEF:bytes_$_=$src:${_}_size:AVERAGE",
 194                    "CDEF:kb_$_=bytes_$_,1024,/")
 195               } qw(accepted duplicate)),
 196            "AREA:accepted#00f:ok:STACK",
 197            "AREA:rejected#f00:rej:STACK",
 198            "AREA:duplicate#000:dupe:STACK",
 199            "AREA:refused#aaa:unw:STACK",
 200            "CDEF:kb_accepted_smooth=kb_accepted,<interval/60>,TREND",
 201            "LINE:kb_duplicate#ff0:kb dupe",
 202            "LINE:kb_accepted_smooth#008:~kb",
 203            ]);
 204 }
 205
 206 if (param('debug')) {
 207     print "Content-Type: text/plain\n\n";
 208 }
 209
 210 our @navsettings;
 211
 212 sub navsetting ($) {
 213     my ($nav) = @_;
 214     my $var= $nav->{Variable};
 215     $$var= param($nav->{Param});
 216     $$var= $nav->{Default} if !defined $$var;
 217     die $nav->{Param} unless grep { $_ eq $$var } @{ $nav->{Values} };
 218     push @navsettings, $nav;
 219 }
 220
 221 our $section;
 222
 223 navsetting({
 224     Desc => 'Section',
 225     Param => 'section',
 226     Variable => \$section,
 227     Default => $sections[0],
 228     Values => [@sections],
 229     Show => sub { return $_[0]; }
 230 });
 231
 232
 233 sub num_param ($$$$) {
 234     my ($param,$def,$min,$max) = @_;
 235     my $v= param($param);
 236     return $def if !defined $v;
 237     $v =~ m/^([1-9]\d{0,8})$/ or die;
 238     $v= $1;
 239     die unless $v >= $min && $v <= $max;
 240     return $v + 0;
 241 }
 242
 243 my $group= param('graph');
 244
 245 my $elem= param('elem');
 246 if (defined $elem) {
 247     my $g= $graphs{$section,$group,$elem};
 248     die unless $g;
 249
 250     my $width= num_param('w',370,100,1600);
 251     my $height= num_param('h',200,100,1600);
 252
 253     my $sloth= param('sloth');
 254     die unless defined $sloth;
 255     $sloth =~ m/^(\d+)$/ or die;
 256     $sloth= $1+0;
 257     my $end= $g->{TimeRanges}[$sloth];
 258
 259     my $cacheid= "$section!$group!$elem!$sloth!$width!$height";
 260     my $cachepath= "cache/$cacheid.png";
 261
 262     my @args= @{ $g->{Args} };
 263     s,\<interval/(\d+)\>, $end/$1 ,ge foreach @args;
 264     unshift @args, qw(--end now --start), "end-${end}s";
 265
 266     my $title= $group;
 267     if (length $elem) { $title.= " $elem"; }
 268
 269     $title .= " $g->{Units}" if $g->{Units};
 270     unshift @args, '-t', $title, '-w',$width, '-h',$height;
 271     unshift @args, qw(-a PNG --full-size-mode);
 272
 273     if (param('debug')) {
 274         print((join "\n",@args),"\n"); exit 0;
 275     }
 276
 277 #print STDERR "||| ",(join ' ', map { "'$_'" } @args)." |||\n";
 278     exec(qw(sh -ec), <<'END', 'x', $cachepath, @args);
 279         p="$1"; shift
 280         rrdtool graph "$p" --lazy "$@" >/dev/null
 281         printf "Content-Type: image/png\n\n"
 282         exec cat "$p"
 283 END
 284     die $!;
 285 }
 286
 287 sub start_page ($) {
 288     my ($title) = @_;
 289     print header(), start_html($title);
 290     my $outerdelim= '';
 291     foreach my $nav (@navsettings) {
 292         print $outerdelim;
 293         print $nav->{Desc}, ": ";
 294         my $delim= '';
 295         my $current= $nav->{Variable};  $current= $$current;
 296         foreach my $couldbe (@{ $nav->{Values} }) {
 297             print $delim;
 298             my $show= $nav->{Show}($couldbe);
 299             if ($couldbe eq $current) {
 300                 print "<b>$show</b>";
 301             } else {
 302                 my $u= $self;
 303                 my $delim2= '?';
 304                 foreach my $nav2 (@navsettings) {
 305                     my $current2= $nav2->{Variable};  $current2= $$current2;
 306                     $current2= $couldbe if $nav2->{Param} eq $nav->{Param};
 307                     next if $current2 eq $nav2->{Default};
 308                     $u .= $delim2;  $u .= "$nav2->{Param}=$current2";
 309                     $delim2= '&';
 310                 }
 311                 print a({href=>$u}, $show);
 312             }
 313             $delim= ' | ';
 314         }
 315         $outerdelim= "<br>\n";
 316     }
 317     print "\n";
 318
 319     print h1("$title");
 320 }
 321
 322 my $detail= param('detail');
 323 if ($detail) {
 324     my $elems= $group_elems{$section,$detail};
 325     die unless $elems;
 326     start_page("$detail graphs");
 327     foreach my $xsloth (0..5) {
 328         foreach my $elem (@$elems) {
 329             my $g= $graphs{$section,$detail,$elem};
 330             die unless $g;
 331             my $tsloth= $xsloth + $g->{Slower};
 332             my $imgurl= "$self?graph=$detail&section=$section".
 333                 "&sloth=$tsloth&elem=$elem";
 334             print a({href=>"$imgurl&w=780&h=800"},
 335                     img({src=>$imgurl, alt=>''}));
 336         }
 337     }
 338     print end_html();
 339     exit 0;
 340 }
 341
 342 our $sloth;
 343
 344 navsetting({
 345     Desc => 'Time interval',
 346     Param => 'sloth',
 347     Variable => \$sloth,
 348     Default => 1,
 349     Values => [0..3],
 350     Show => sub {
 351         my ($sl) = @_;
 352         return ('Narrower', 'Normal', 'Wider', 'Extra wide')[$sl];
 353     }
 354 });
 355
 356 if (param('debug')) {
 357     use Data::Dumper;
 358     print Dumper(\%graphs);
 359     exit 0;
 360 }
 361
 362 start_page("$section graphs");
 363
 364 foreach my $group (@{ $section_groups{$section} }) {
 365     print a({href=>"$self?detail=$group&section=$section"});
 366     my $imgurl= "$self?graph=$group&section=$section";
 367     print "<span style=\"white-space:nowrap\">";
 368     my $elems= $group_elems{$section,$group};
 369     foreach my $elem (@$elems) {
 370         my $g= $graphs{$section,$group,$elem};
 371         print img({src=>"$imgurl&elem=$elem&sloth=".($sloth + $g->{Slower}),
 372                    alt=>''});
 373     }
 374     print "</span>";
 375     print "</a>\n";
 376 }
 377