lib/Gruntmaster/Daemon.pm

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