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_004';
   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         MONO => 'cs',
  28         JAVA => 'java',
  29         PASCAL => 'pas',
  30         PERL => 'pl',
  31         PYTHON => 'py',
  32         RUBY => 'rb',
  33         SBCL => 'l',
  34 };
  35
  36 ##################################################
  37
  38 my $db;
  39
  40 sub safe_can {
  41         my ($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 $meta = {
 111                 problem => $job->problem->id,
 112                 files => {
 113                         prog => {
 114                                 name => 'prog.' . $job->extension,
 115                                 format => $job->format,
 116                                 content => $job->source,
 117                         },
 118                 },
 119                 map { $_ => $job->problem->get_column($_) } qw/generator runner judge precnt testcnt timeout olimit/
 120         };
 121         my $limit_override = $job->result_source->schema->limits->find($meta->{problem}, $job->format);
 122         $meta->{timeout} = $limit_override->timeout if $limit_override;
 123         $meta->{tests} = decode_json $job->problem->tests if $meta->{runner} eq 'File';
 124         delete $meta->{precnt} unless $job->contest;
 125         $meta->{testcnt} = $meta->{precnt} if $meta->{precnt};
 126
 127         $meta->{files}{ver} = {
 128                 name => 'ver.' . FORMAT_EXTENSION->{$job->problem->verformat},
 129                 format => $job->problem->verformat,
 130                 content => $job->problem->versource,
 131         } if $job->problem->verformat;
 132
 133         process $meta;
 134
 135         $meta->{result_text} .= ' (pretests)' if $meta->{precnt};
 136         $job->update({
 137                 result => $meta->{result},
 138                 result_text => $meta->{result_text},
 139                 ($meta->{results} ? (results => encode_json $meta->{results}) : ()),
 140                 $meta->{errors} ? (errors => $meta->{errors}) : ()
 141         });
 142
 143         my $solved = $meta->{result} ? 0 : 1;
 144         my $status = $db->problem_statuses->find($job->owner, $job->problem);
 145         $db->problem_statuses->update_or_create({
 146                 problem => $job->problem,
 147                 owner   => $job->owner,
 148                 job     => $job->id,
 149                 solved  => $solved}) if !$job->problem->private;
 150 }
 151
 152 sub got_job{
 153         my $job = $_[0];
 154         my $id = $job->id;
 155         get_logger->debug("Taking job $id...");
 156         my $daemon = hostname . ":$$";
 157         $job->update({daemon => $daemon}, {where => {daemon => undef}})->discard_changes;
 158         if ($job->daemon eq $daemon) {
 159                 get_logger->debug("Succesfully taken job $id");
 160                 process_job $job;
 161                 get_logger->debug("Job $id done");
 162         } else {
 163                 get_logger->debug("Job $id already taken by " . $job->daemon);
 164         }
 165 }
 166
 167 sub run{
 168         require Gruntmaster::Data;
 169         $db = Gruntmaster::Data->connect($ENV{GRUNTMASTER_DSN} // 'dbi:Pg:');
 170         Log::Log4perl->init('/etc/gruntmasterd/gruntmasterd-log.conf');
 171         get_logger->info("gruntmasterd $VERSION started");
 172         my $dir = tempdir 'gruntmasterd.XXXX', CLEANUP => 1, TMPDIR => 1;
 173         chmod 0711, $dir;
 174         chdir $dir;
 175         while (1) {
 176                 my $job = $db->jobs->search({daemon => undef}, {rows => 1})->first;
 177                 got_job $job if defined $job;
 178                 sleep 2 unless defined $job;
 179         }
 180 }
 181
 182 1;
 183 __END__
 184
 185 =head1 NAME
 186
 187 Gruntmaster::Daemon - Gruntmaster 6000 Online Judge -- daemon
 188
 189 =head1 SYNOPSIS
 190
 191   use Gruntmaster::Daemon;
 192   Gruntmaster::Daemon->run;
 193
 194 =head1 DESCRIPTION
 195
 196 Gruntmaster::Daemon is the daemon component of the Gruntmaster 6000 online judge.
 197
 198 =head1 AUTHOR
 199
 200 Marius Gavrilescu E<lt>marius@ieval.roE<gt>
 201
 202 =head1 COPYRIGHT AND LICENSE
 203
 204 Copyright (C) 2014 by Marius Gavrilescu
 205
 206 This library is free software: you can redistribute it and/or modify
 207 it under the terms of the GNU Affero General Public License as published by
 208 the Free Software Foundation, either version 3 of the License, or
 209 (at your option) any later version.
 210
 211
 212 =cut