lib/Gruntmaster/Daemon.pm

   1 package Gruntmaster::Daemon;
   2
   3 use 5.014000;
   4 use strict;
   5 use warnings;
   6
   7 our $VERSION = '5999.000_005';
   8
   9 use Gruntmaster::Daemon::Constants qw/ERR/;
  10 use Gruntmaster::Daemon::Format qw/prepare_files stopvms/;
  11
  12 use File::Slurp qw/read_file/;
  13 use File::Temp qw/tempdir/;
  14 use JSON qw/decode_json encode_json/;
  15 use Sys::Hostname qw/hostname/;
  16 use Time::HiRes qw/time/;
  17 use Try::Tiny;
  18 use Log::Log4perl qw/get_logger/;
  19
  20 use constant FORMAT_EXTENSION => {
  21         BRAINFUCK => 'bf',
  22         C => 'c',
  23         CPP => 'cpp',
  24         GCCGO => 'go',
  25         GOLANG => 'go',
  26         GOLFSCRIPT => 'gs',
  27         HASKELL => 'hs',
  28         JAVA => 'java',
  29         JULIA => 'jl',
  30         MONO => 'cs',
  31         PASCAL => 'pas',
  32         PERL => 'pl',
  33         PYTHON => 'py',
  34         RUBY => 'rb',
  35         RUST => 'rs',
  36         SBCL => 'l',
  37 };
  38
  39 ##################################################
  40
  41 sub safe_can {
  42         my ($type, $sub, $name) = @_;
  43
  44         get_logger->logdie("Invalid \l$type: '$name'") unless $name =~ /^\w+$/s;
  45         my $pkg = __PACKAGE__ . "::${type}::${name}";
  46         eval "require $pkg" or get_logger->warn("Error while requiring $pkg: $@");
  47         $pkg->can($sub) or get_logger->logdie("No such \l$type: '$name'");
  48 }
  49
  50 sub process{
  51         my ($meta) = @_;
  52
  53         my @results;
  54         my @full_results = ();
  55         our $errors = '';
  56         try {
  57                 prepare_files $meta;
  58                 chomp $errors;
  59
  60                 my ($files, $generator, $runner, $judge, $testcnt) = map { $meta->{$_} or die "Required parameter missing: $_\n"} qw/files generator runner judge testcnt/;
  61
  62                 $generator = safe_can Generator => generate => $generator;
  63                 $runner = safe_can Runner => run => $runner;
  64                 $judge = safe_can Judge => judge => $judge;
  65
  66                 for my $test (1 .. $testcnt) {
  67                         my $start_time = time;
  68                         my $result;
  69                         unlink 'result';
  70                         try {
  71                                 $generator->($test, $meta);
  72                                 $result = $runner->($test, $meta);
  73                         } catch {
  74                                 $result = $_;
  75                                 unless (ref $result) {
  76                                         chomp $result;
  77                                         $result = [ERR, $result];
  78                                 }
  79                         };
  80
  81                         if (ref $result) {
  82                                 my $result_text = $result->[1];
  83                                 $result_text .= ': ' . read_file 'result' if -s 'result';
  84                                 get_logger->trace("Test $test result is " . $result_text);
  85                                 push @full_results, {id => $test, result => $result->[0], result_text => $result_text, time => time - $start_time}
  86                         } else {
  87                                 get_logger->trace("Test $test result is $result");
  88                                 push @full_results, {id => $test, result => 0, result_text => $result, time => time - $start_time}
  89                         }
  90                         push @results, $result;
  91                         last if $meta->{judge} eq 'Absolute' && ref $result
  92                 }
  93
  94                 my %results = $judge->(@results);
  95                 $meta->{$_} = $results{$_} for keys %results;
  96                 $meta->{results} = \@full_results
  97         } catch {
  98                 s/(.*) at .*/$1/s;
  99                 chomp;
 100                 $meta->{result} = -1;
 101                 $meta->{result_text} = $_;
 102         };
 103         stopvms;
 104         $meta->{errors} = $errors;
 105
 106         get_logger->info('Job result: ' . $meta->{result_text});
 107 }
 108
 109 sub process_job {
 110         my ($job) = @_;
 111         my $pb = db()->select('problems', '*', {id => $job->{problem}})->hash;
 112         my $meta = {
 113                 problem => $job->{problem},
 114                 files => {
 115                         prog => {
 116                                 name => 'prog.' . $job->{extension},
 117                                 format => $job->{format},
 118                                 content => $job->{source},
 119                         },
 120                 },
 121                 map { $_ => $pb->{$_} } qw/generator runner judge precnt testcnt timeout olimit/
 122         };
 123         my $timeout_override = db()->query('SELECT timeout FROM limits WHERE problem=? AND format=?', $job->{problem}, $job->{format})->list;
 124         $meta->{timeout} = $timeout_override if defined $timeout_override;
 125         $meta->{tests} = decode_json $pb->{tests} if $meta->{runner} eq 'File';
 126         $job->{contest} &&= contest_entry($job->{contest});
 127         delete $meta->{precnt} unless $job->{contest} && $job->{contest}{started} && !$job->{contest}{finished}; ## no critic (ProhibitNegativeExpressionsInUnlessAndUntilConditions)
 128         $meta->{testcnt} = $meta->{precnt} if $meta->{precnt};
 129
 130         $meta->{files}{ver} = {
 131                 name => 'ver.' . FORMAT_EXTENSION->{$pb->{verformat}},
 132                 format => $pb->{verformat},
 133                 content => $pb->{versource},
 134         } if $pb->{verformat};
 135
 136         process $meta;
 137
 138         $meta->{result_text} .= ' (pretests)' if $meta->{precnt};
 139         finish_job($job, $job->{private} || $pb->{private},
 140           result => $meta->{result},
 141           result_text => $meta->{result_text},
 142           ($meta->{results} ? (results => encode_json $meta->{results}) : ()),
 143           $meta->{errors} ? (errors => $meta->{errors}) : ());
 144 }
 145
 146 sub got_job{
 147         my $job = $_[0];
 148         my $id = $job->{id};
 149         get_logger->debug("Processing job $id...");
 150         process_job $job;
 151         get_logger->debug("Job $id done");
 152 }
 153
 154 my $daemon = hostname . ":$$";
 155
 156 sub run{
 157         require Gruntmaster::Data;
 158         Gruntmaster::Data->import;
 159         dbinit($ENV{GRUNTMASTER_DSN} // 'dbi:Pg:');
 160         Log::Log4perl->init('/etc/gruntmasterd/gruntmasterd-log.conf');
 161         get_logger->info("gruntmasterd $VERSION started ($daemon)");
 162         my $dir = tempdir 'gruntmasterd.XXXX', CLEANUP => 1, TMPDIR => 1;
 163         chmod 0711, $dir;
 164         chdir $dir;
 165         while (1) {
 166                 my $job = take_job($daemon);
 167                 got_job $job if defined $job;
 168                 sleep 2 unless defined $job;
 169         }
 170 }
 171
 172 1;
 173 __END__
 174
 175 =head1 NAME
 176
 177 Gruntmaster::Daemon - Gruntmaster 6000 Online Judge -- daemon
 178
 179 =head1 SYNOPSIS
 180
 181   use Gruntmaster::Daemon;
 182   Gruntmaster::Daemon->run;
 183
 184 =head1 DESCRIPTION
 185
 186 Gruntmaster::Daemon is the daemon component of the Gruntmaster 6000 online judge.
 187
 188 =head1 AUTHOR
 189
 190 Marius Gavrilescu E<lt>marius@ieval.roE<gt>
 191
 192 =head1 COPYRIGHT AND LICENSE
 193
 194 Copyright (C) 2014 by Marius Gavrilescu
 195
 196 This library is free software: you can redistribute it and/or modify
 197 it under the terms of the GNU Affero General Public License as published by
 198 the Free Software Foundation, either version 3 of the License, or
 199 (at your option) any later version.
 200
 201
 202 =cut