cgi

   1 #!/usr/bin/speedy -w -- -t100 -M1
   2
   3 use strict qw(vars);
   4 use CGI::SpeedyCGI qw/:standard -no_xhtml/;
   5 use CGI qw/:standard -no_xhtml/;
   6
   7 sub fail ($) {
   8     print(header(-status=>500),
   9           start_html('Error'),
  10           h1('Error'),
  11           escapeHTML($_[0]),
  12           end_html());
  13     exit 0;
  14 }
  15
  16 our (@sections, %section_groups, %group_elems, %graphs);
  17
  18 #---------- initialisation code, run once - graphs setup ----------
  19
  20 BEGIN {
  21
  22 our $R= '/var/lib/collectd/rrd/chiark.greenend.org.uk';
  23 our $SELF= '/home/ijackson/things/rrd-graphs';
  24
  25 our @timeranges= (3600, map { $_*86400 } qw(1 7 28), 13*7+1, 366);
  26
  27 sub graph_of_group ($$$$$) {
  28     my ($section, $group, $elem, $basis, $args) = @_;
  29     $basis->{Args}= $args;
  30     $basis->{Slower}= 0 unless exists $basis->{Slower};
  31     $basis->{TimeRanges} ||= \@timeranges;
  32     $graphs{$section,$group,$elem}= $basis;
  33     if (!exists $group_elems{$section,$group}) {
  34         # new group then
  35         if (!exists $section_groups{$section}) {
  36             # new section even
  37             push @sections, $section;
  38         }
  39         push @{ $section_groups{$section} }, $group;
  40     }
  41     push @{ $group_elems{$section,$group} }, $elem;
  42 }
  43
  44 sub graph ($$$$) {
  45     my ($section, $gname, $basis, $args) = @_;
  46     graph_of_group($section, $gname,'', $basis, $args);
  47 }
  48
  49 graph('General', 'Load and processes', { },
  50       [
  51        "DEF:load=$R/load/load.rrd:shortterm:AVERAGE",
  52        (map { "DEF:$_=$R/processes/ps_state-$_.rrd:value:AVERAGE" }
  53             qw(blocked running stopped paging sleeping zombies)),
  54        "AREA:running#88f:running:STACK",
  55        "AREA:blocked#8f8:disk wait:STACK",
  56        "AREA:paging#f88:paging:STACK",
  57        "LINE:load#000:load",
  58        ]);
  59
  60 graph('General', 'Processes', { },
  61       [
  62        (map { "DEF:$_=$R/processes/ps_state-$_.rrd:value:AVERAGE" }
  63             qw(blocked running stopped paging sleeping zombies)),
  64        "CDEF:busy=0".(join '', map { ",$_,+" } qw(running blocked paging)),
  65        "AREA:sleeping#ccc:sleeping:STACK",
  66        "AREA:stopped#00f:stopped:STACK",
  67        "AREA:zombies#ff0:zombie:STACK",
  68        "AREA:busy#000:busy:STACK",
  69        ]);
  70
  71 graph('General', 'CPU', { Units => '[%]' },
  72       [
  73        (map {
  74            my $thing= $_;
  75            (map { "DEF:$thing$_=$R/cpu-$_/cpu-$thing.rrd:value:AVERAGE" }
  76                 (0..7)),
  77            "CDEF:$thing=0".join('', map { ",$thing$_,+" } (0..7)).",8.0,/";
  78        } qw(idle interrupt nice softirq steal system user wait)),
  79        "CDEF:allintr=softirq,steal,+,interrupt,+",
  80        "AREA:allintr#ff0:interrupt:STACK",
  81        "AREA:system#88f:system:STACK",
  82        "AREA:user#00f:user:STACK",
  83        "AREA:nice#ccc:nice:STACK",
  84        "AREA:wait#f00:wait:STACK",
  85        ]);
  86
  87 graph('General', 'Memory', { },
  88       [ '-b',1024,
  89        (map { "DEF:swap_$_=$R/swap/swap-$_.rrd:value:AVERAGE" }
  90             qw(free used cached)),
  91        (map { "DEF:mem_$_=$R/memory/memory-$_.rrd:value:AVERAGE" }
  92             qw(buffered free used cached)),
  93        "CDEF:c_swap_used=0,swap_used,-",
  94        "CDEF:c_swap_cached=0,swap_cached,-",
  95        "CDEF:c_swap_free=0,swap_free,-",
  96        "AREA:c_swap_used#000:used swap",
  97        "AREA:c_swap_cached#888:\"cached\" swap:STACK",
  98 #       "AREA:c_swap_free#88f:free swap:STACK",
  99        "AREA:mem_used#ff0:used memory",
 100        "AREA:mem_buffered#00f:page cache:STACK",
 101        "AREA:mem_cached#008:buffer cache:STACK",
 102        "AREA:mem_free#ccc:unused memory:STACK",
 103        ]);
 104
 105 graph('General', 'Network', { Units => '[/sec; tx +ve; errs x1000]' },
 106       [
 107        (map {
 108            ("DEF:tx_$_=$R/interface/if_$_-eth0.rrd:tx:AVERAGE",
 109             "DEF:rx_$_=$R/interface/if_$_-eth0.rrd:rx:AVERAGE",
 110             "CDEF:mrx_$_=0,rx_$_,-")
 111            } qw(octets packets errors)),
 112        (map {
 113            ("CDEF:${_}_kb=${_}_octets,1024,/",
 114             "CDEF:${_}_errsx=${_}_errors,1000,*")
 115            } qw(mrx tx)),
 116        "AREA:tx_kb#080:kby",
 117        "LINE:tx_packets#0f0:pkts",
 118        "LINE:tx_errsx#000:errs",
 119        "AREA:mrx_kb#008:kby",
 120        "LINE:mrx_packets#00f:pkts",
 121        "LINE:mrx_errsx#444:errs",
 122       ]);
 123
 124 graph('General', 'Users', {  },
 125       [
 126        "DEF:users=$R/users/users.rrd:users:AVERAGE",
 127        "LINE:users#008:users"
 128        ]);
 129
 130 foreach my $src (<$R/df/df-*.rrd>) {
 131     my $vol= $src;
 132     $vol =~ s,\.rrd$,, or next;
 133     $vol =~ s,.*/,,;
 134     $vol =~ s,^df-,,;
 135     graph('Disk space', $vol, {
 136              Slower => 1,
 137           },
 138           [ '-A','-l',0,'-r',
 139            qw(-b 1024 -l 0),
 140            (map { "DEF:$_=$src:$_:AVERAGE" } qw(free used)),
 141            "AREA:used#000:used:STACK",
 142            "AREA:free#88f:free:STACK",
 143            ]);
 144 }
 145
 146 our %news_name_map;
 147
 148 if (!open NM, '<', "$SELF/data/news/name-map") {
 149     die unless $!==&ENOENT;
 150 } else {
 151     while (<NM>) {
 152         s/^\s*//; s/\s+$//;
 153         next unless m/^[^\#]/;
 154         m/^(\S+)\s+(in|out|\*)\s+(\S+)$/ or die;
 155         if ($2 eq '*') {
 156             $news_name_map{$1,$_}= $3 foreach qw(in out);
 157         } else {
 158             $news_name_map{$1,$2}= $3;
 159         }
 160     }
 161 }
 162
 163 sub news_name_sortkey {
 164     return join '.', reverse split /\./, $_[0];
 165 }
 166
 167 foreach my $src (sort { news_name_sortkey($a) cmp news_name_sortkey($b) }
 168                  <$SELF/data/news/*.rrd>) {
 169     my $site= $src;
 170     $site =~ s,\.rrd$,, or next;
 171     $site =~ s,.*/,,;
 172     $site =~ s,_(in|out)$,,;
 173     my $inout= $1;
 174     $site =~ s/^([-.0-9a-z]+)_//;
 175     my $us= $1; # all very well but we ignore it
 176     my $newsite= $news_name_map{$site,$inout};
 177     $site= $newsite if defined $newsite;
 178     next if $site eq '-';
 179     graph_of_group("News", $site, $inout,
 180           {
 181                 Units => '[art/s]',
 182                 TimeRanges => [ map { $_*86400 } qw(1 7 31), 366, 366*3 ]
 183             }, $inout eq 'out' ?
 184           [
 185            (map { "DEF:$_=$src:$_:AVERAGE" }
 186                 qw(missing deferred unwanted accepted rejected body_missing)),
 187            "AREA:accepted#00f:ok",
 188            "AREA:body_missing#ff0:miss:STACK",
 189            "AREA:rejected#f00:rej:STACK",
 190            "AREA:unwanted#aaa:unw:STACK",
 191            "AREA:deferred#ddd:defer:STACK",
 192            ] :
 193           [
 194            (map { "DEF:$_=$src:$_:AVERAGE" }
 195                 qw(accepted refused rejected duplicate)),
 196            (map { ("DEF:bytes_$_=$src:${_}_size:AVERAGE",
 197                    "CDEF:kb_$_=bytes_$_,1024,/")
 198               } qw(accepted duplicate)),
 199            "AREA:accepted#00f:ok:STACK",
 200            "AREA:rejected#f00:rej:STACK",
 201            "AREA:duplicate#000:dupe:STACK",
 202            "AREA:refused#aaa:unw:STACK",
 203            "CDEF:kb_accepted_smooth=kb_accepted,<interval/60>,TREND",
 204            "LINE:kb_duplicate#ff0:kb dupe",
 205            "LINE:kb_accepted_smooth#008:~kb",
 206            ]);
 207 }
 208
 209 }
 210
 211 #---------- right, that was the initialisation ----------
 212
 213 our $self= url(-relative=>1);
 214
 215 if (param('debug')) {
 216     print "Content-Type: text/plain\n\n";
 217 }
 218
 219 our @navsettings;
 220
 221 sub navsetting ($) {
 222     my ($nav) = @_;
 223     my $var= $nav->{Variable};
 224     $$var= param($nav->{Param});
 225     $$var= $nav->{Default} if !defined $$var;
 226     die $nav->{Param} unless grep { $_ eq $$var } @{ $nav->{Values} };
 227     push @navsettings, $nav;
 228 }
 229
 230 our $section;
 231
 232 navsetting({
 233     Desc => 'Section',
 234     Param => 'section',
 235     Variable => \$section,
 236     Default => $sections[0],
 237     Values => [@sections],
 238     Show => sub { return $_[0]; }
 239 });
 240
 241
 242 sub num_param ($$$$) {
 243     my ($param,$def,$min,$max) = @_;
 244     my $v= param($param);
 245     return $def if !defined $v;
 246     $v =~ m/^([1-9]\d{0,8})$/ or die;
 247     $v= $1;
 248     die unless $v >= $min && $v <= $max;
 249     return $v + 0;
 250 }
 251
 252 our $group= param('graph');
 253
 254 our $elem= param('elem');
 255 if (defined $elem) {
 256     my $g= $graphs{$section,$group,$elem};
 257     die unless $g;
 258
 259     my $width= num_param('w',370,100,1600);
 260     my $height= num_param('h',200,100,1600);
 261
 262     my $sloth= param('sloth');
 263     die unless defined $sloth;
 264     $sloth =~ m/^(\d+)$/ or die;
 265     $sloth= $1+0;
 266     my $end= $g->{TimeRanges}[$sloth];
 267     die unless defined $end;
 268
 269     my $cacheid= "$section!$group!$elem!$sloth!$width!$height";
 270     my $cachepath= "cache/$cacheid.png";
 271
 272     my @args= @{ $g->{Args} };
 273     s,\<interval/(\d+)\>, $end/$1 ,ge foreach @args;
 274     unshift @args, qw(--end now --start), "end-${end}s";
 275
 276     my $title= $group;
 277     if (length $elem) { $title.= " $elem"; }
 278
 279     $title .= " $g->{Units}" if $g->{Units};
 280     unshift @args, '-t', $title, '-w',$width, '-h',$height;
 281     unshift @args, qw(-a PNG --full-size-mode);
 282
 283     if (param('debug')) {
 284         print((join "\n",@args),"\n"); exit 0;
 285     }
 286
 287 #print STDERR "||| ",(join ' ', map { "'$_'" } @args)." |||\n";
 288     exec(qw(sh -ec), <<'END', 'x', $cachepath, @args);
 289         p="$1"; shift
 290         rrdtool graph "$p" --lazy "$@" >/dev/null
 291         printf "Content-Type: image/png\n\n"
 292         exec cat "$p"
 293 END
 294     die $!;
 295 }
 296
 297 sub start_page ($) {
 298     my ($title) = @_;
 299     print header(), start_html($title);
 300     my $outerdelim= '';
 301     foreach my $nav (@navsettings) {
 302         print $outerdelim;
 303         print $nav->{Desc}, ": ";
 304         my $delim= '';
 305         my $current= $nav->{Variable};  $current= $$current;
 306         foreach my $couldbe (@{ $nav->{Values} }) {
 307             print $delim;
 308             my $show= $nav->{Show}($couldbe);
 309             if ($couldbe eq $current) {
 310                 print "<b>$show</b>";
 311             } else {
 312                 my $u= $self;
 313                 my $delim2= '?';
 314                 foreach my $nav2 (@navsettings) {
 315                     my $current2= $nav2->{Variable};  $current2= $$current2;
 316                     $current2= $couldbe if $nav2->{Param} eq $nav->{Param};
 317                     next if $current2 eq $nav2->{Default};
 318                     $u .= $delim2;  $u .= "$nav2->{Param}=$current2";
 319                     $delim2= '&';
 320                 }
 321                 print a({href=>$u}, $show);
 322             }
 323             $delim= ' | ';
 324         }
 325         $outerdelim= "<br>\n";
 326     }
 327     print "\n";
 328
 329     print h1("$title");
 330 }
 331
 332 our $detail= param('detail');
 333 if ($detail) {
 334     my $elems= $group_elems{$section,$detail};
 335     die unless $elems;
 336     start_page("$detail graphs");
 337     foreach my $xsloth (0..5) {
 338         foreach my $elem (@$elems) {
 339             my $g= $graphs{$section,$detail,$elem};
 340             die unless $g;
 341             my $tsloth= $xsloth + $g->{Slower};
 342             my $imgurl= "$self?graph=$detail&section=$section".
 343                 "&sloth=$tsloth&elem=$elem";
 344             print a({href=>"$imgurl&w=780&h=800"},
 345                     img({src=>$imgurl, alt=>''}));
 346         }
 347     }
 348     print end_html();
 349     exit 0;
 350 }
 351
 352 our $sloth;
 353
 354 navsetting({
 355     Desc => 'Time interval',
 356     Param => 'sloth',
 357     Variable => \$sloth,
 358     Default => 1,
 359     Values => [0..3],
 360     Show => sub {
 361         my ($sl) = @_;
 362         return ('Narrower', 'Normal', 'Wider', 'Extra wide')[$sl];
 363     }
 364 });
 365
 366 if (param('debug')) {
 367     use Data::Dumper;
 368     print Dumper(\%graphs);
 369     exit 0;
 370 }
 371
 372 start_page("$section graphs");
 373
 374 foreach my $group (@{ $section_groups{$section} }) {
 375     print a({href=>"$self?detail=$group&section=$section"});
 376     my $imgurl= "$self?graph=$group&section=$section";
 377     print "<span style=\"white-space:nowrap\">";
 378     my $elems= $group_elems{$section,$group};
 379     foreach my $elem (@$elems) {
 380         my $g= $graphs{$section,$group,$elem};
 381         print img({src=>"$imgurl&elem=$elem&sloth=".($sloth + $g->{Slower}),
 382                    alt=>''});
 383     }
 384     print "</span>";
 385     print "</a>\n";
 386 }
 387