lib/Gruntmaster/Daemon.pm

   1 package Gruntmaster::Daemon;
   2
   3 use 5.014000;
   4 use strict;
   5 use warnings;
   6
   7 our $VERSION = '5999.000_001';
   8
   9 use Gruntmaster::Daemon::Constants qw/ERR/;
  10 use Gruntmaster::Daemon::Format qw/prepare_files/;
  11 use Gruntmaster::Data;
  12
  13 use File::Basename qw/fileparse/;
  14 use File::Temp qw/tempdir/;
  15 use Sys::Hostname qw/hostname/;
  16 use Time::HiRes qw/time/;
  17 use Try::Tiny;
  18 use Log::Log4perl qw/get_logger/;
  19 use LWP::UserAgent;
  20
  21 use constant PAGE_SIZE => 10;
  22
  23 ##################################################
  24
  25 my $ua = LWP::UserAgent->new;
  26 my @purge_hosts = exists $ENV{PURGE_HOSTS} ? split ' ', $ENV{PURGE_HOSTS} : ();
  27
  28 sub safe_can_nodie {
  29   my ($type, $sub, $name) = @_;
  30
  31   return unless $name =~ /^\w+$/;
  32   no strict 'refs';
  33   my $pkg = __PACKAGE__ . "::${type}::${name}";
  34   eval "require $pkg" or get_logger->warn("Error while requiring $pkg: $@");
  35   $pkg->can($sub);
  36 }
  37
  38 sub safe_can {
  39   my ($type, $sub, $name) = @_;
  40
  41   safe_can_nodie @_ or get_logger->logdie("No such \l$type: '$name'");
  42 }
  43
  44 sub purge {
  45         for my $host (@purge_hosts) {
  46                 my $req = HTTP::Request->new(PURGE => "http://$host$_[0]");
  47                 $ua->request($req)
  48         }
  49 }
  50
  51 sub process{
  52   my $job = shift;
  53
  54   my @results;
  55   my @full_results = ();
  56   my $meta = {};
  57   our $errors = '';
  58   try {
  59         $meta = job_inmeta $job;
  60         if (job_problem $job) {
  61           local $_ = job_problem $job;
  62           my $pbmeta = problem_meta;
  63           my %files = exists $meta->{files} ? %{$meta->{files}} : ();
  64           $meta = {
  65                   %$meta,
  66                   (defined problem_generator() ? (generator => problem_generator) : ()),
  67                   (defined problem_runner()    ? (runner    => problem_runner)    : ()),
  68                   (defined problem_judge()     ? (judge     => problem_judge)     : ()),
  69                   (defined problem_testcnt()   ? (testcnt   => problem_testcnt)   : ()),
  70                   (defined problem_timeout()   ? (timeout   => problem_timeout)   : ()),
  71                   (defined problem_olimit()    ? (olimit    => problem_olimit)    : ()),
  72                   %$pbmeta
  73           };
  74           $meta->{files} = {%files, %{$pbmeta->{files}}} if exists $pbmeta->{files};
  75         }
  76
  77         prepare_files $meta;
  78         chomp $errors;
  79
  80         my ($files, $generator, $runner, $judge, $testcnt) = map { $meta->{$_} or die "Required parameter missing: $_"} qw/files generator runner judge testcnt/;
  81
  82         $generator = safe_can Generator => generate => $generator;
  83         $runner = safe_can Runner => run => $runner;
  84         $judge = safe_can Judge => judge => $judge;
  85
  86         for my $test (1 .. $testcnt) {
  87           my $start_time = time;
  88           my $result;
  89           try {
  90                 $generator->($test, $meta);
  91                 $result = $runner->($test, $meta);
  92           } catch {
  93                 $result = $_;
  94                 unless (ref $result) {
  95                   chomp $result;
  96                   $result = [ERR, $result];
  97                 }
  98           };
  99
 100           if (ref $result) {
 101                 get_logger->trace("Test $test result is " . $result->[1]);
 102                 push @full_results, {id => $test, result => $result->[0], result_text => $result->[1], time => time - $start_time}
 103           } else {
 104                 get_logger->trace("Test $test result is $result");
 105                 push @full_results, {id => $test, result => 0, result_text => $result, time => time - $start_time}
 106           }
 107           push @results, $result;
 108           last if $meta->{judge} eq 'Absolute' && ref $result
 109         }
 110
 111         my %results = $judge->(@results);
 112         $meta->{$_} = $results{$_} for keys %results;
 113   } catch {
 114         s,(.*) at .*,$1,;
 115         chomp;
 116         $meta->{result} = -1;
 117         $meta->{result_text} = $_;
 118   };
 119
 120   get_logger->info("Job result: " . $meta->{result_text});
 121   set_job_result $job, $meta->{result};
 122   set_job_result_text $job, $meta->{result_text};
 123   set_job_results $job, \@full_results if scalar @full_results;
 124   set_job_errors $job, $errors;
 125
 126   my $log = $Gruntmaster::Data::contest ? "ct/$Gruntmaster::Data::contest/log" : 'log';
 127
 128   PUBLISH gensrc => ($Gruntmaster::Data::contest // '') . ".$job";
 129   PUBLISH genpage => "$log/job/$job.html";
 130   PUBLISH genpage => "$log/index.html";
 131   PUBLISH genpage => "$log/st.html";
 132   my $page = ($job + PAGE_SIZE - 1) / PAGE_SIZE;
 133   PUBLISH genpage => "$log/@{[$page - 1]}.html";
 134   PUBLISH genpage => "$log/$page.html";
 135   PUBLISH genpage => "$log/@{[$page + 1]}.html";
 136
 137   purge "/$log/job/$job";
 138   purge "/$log/";
 139   purge "/$log/st";
 140   purge "/$log/$_" for $page - 1, $page, $page + 1;
 141 }
 142
 143 sub got_job{
 144         $_[0] =~ /^(\w*)\.(\d+)$/;
 145         my $job = $2;
 146         local $Gruntmaster::Data::contest = $1 if $1;
 147         get_logger->debug("Taking job $job@{[defined $1 ? \" of contest $1\" : '']}...");
 148         if (set_job_daemon $job, hostname . ":$$") {
 149                 get_logger->debug("Succesfully taken job $job");
 150                 process $job;
 151                 get_logger->debug("Job $job done");
 152         } else {
 153                 get_logger->debug("Job $job already taken");
 154         }
 155 }
 156
 157 sub run{
 158   Log::Log4perl->init('/etc/gruntmasterd/gruntmasterd-log.conf');
 159   get_logger->info("gruntmasterd $VERSION started");
 160   chdir tempdir 'gruntmasterd.XXXX', CLEANUP => 1, TMPDIR => 1;
 161   SUBSCRIBE jobs => \&got_job;
 162   WAIT_FOR_MESSAGES 86400 while 1
 163 }
 164
 165 1;
 166 __END__
 167
 168 =head1 NAME
 169
 170 Gruntmaster::Daemon - Gruntmaster 6000 Online Judge -- daemon
 171
 172 =head1 SYNOPSIS
 173
 174   use Gruntmaster::Daemon;
 175   Gruntmaster::Daemon->run;
 176
 177 =head1 DESCRIPTION
 178
 179 Gruntmaster::Daemon is the daemon component of the Gruntmaster 6000 online judge.
 180
 181 =head1 AUTHOR
 182
 183 Marius Gavrilescu E<lt>marius@ieval.roE<gt>
 184
 185 =head1 COPYRIGHT AND LICENSE
 186
 187 Copyright (C) 2014 by Marius Gavrilescu
 188
 189 This library is free software: you can redistribute it and/or modify
 190 it under the terms of the GNU Affero General Public License as published by
 191 the Free Software Foundation, either version 3 of the License, or
 192 (at your option) any later version.
 193
 194
 195 =cut