lib/Gruntmaster/Daemon.pm

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