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_002';
   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 JSON qw/decode_json encode_json/;
  16 use Sys::Hostname qw/hostname/;
  17 use Time::HiRes qw/time/;
  18 use Try::Tiny;
  19 use Log::Log4perl qw/get_logger/;
  20 use LWP::UserAgent;
  21
  22 use constant PAGE_SIZE => 10;
  23
  24 ##################################################
  25
  26 my $db = Gruntmaster::Data->connect('dbi:Pg:');
  27 my $ua = LWP::UserAgent->new;
  28 my @purge_hosts = exists $ENV{PURGE_HOSTS} ? split ' ', $ENV{PURGE_HOSTS} : ();
  29
  30 sub safe_can_nodie {
  31         my ($type, $sub, $name) = @_;
  32
  33         return unless $name =~ /^\w+$/;
  34         no strict 'refs';
  35         my $pkg = __PACKAGE__ . "::${type}::${name}";
  36         eval "require $pkg" or get_logger->warn("Error while requiring $pkg: $@");
  37         $pkg->can($sub);
  38 }
  39
  40 sub safe_can {
  41         my ($type, $sub, $name) = @_;
  42
  43         safe_can_nodie @_ or get_logger->logdie("No such \l$type: '$name'");
  44 }
  45
  46 sub purge {
  47         for my $host (@purge_hosts) {
  48                 my $req = HTTP::Request->new(PURGE => "http://$host$_[0]");
  49                 $ua->request($req)
  50         }
  51 }
  52
  53 sub process{
  54         my ($job, $jobr) = @_;
  55
  56         my @results;
  57         my @full_results = ();
  58         my $meta;
  59         our $errors = '';
  60         try {
  61                 $meta = {
  62                         problem => $jobr->problem->id,
  63                         files => {
  64                                 prog => {
  65                                         name => 'prog.' . $jobr->extension,
  66                                         format => $jobr->format,
  67                                         content => $jobr->source,
  68                                 },
  69                         },
  70                         map { $_ => $jobr->problem->get_column($_) } qw/generator runner judge testcnt timeout olimit/
  71                 };
  72                 $meta->{tests} = decode_json $jobr->problem->tests if $meta->{runner} eq 'File';
  73
  74                 $meta->{ver} = {
  75                         name => 'ver.cpp',
  76                         format => $jobr->problem->verformat,
  77                         content => $jobr->problem->versource,
  78                 } if $jobr->problem->verformat;
  79
  80                 prepare_files $meta;
  81                 chomp $errors;
  82
  83                 my ($files, $generator, $runner, $judge, $testcnt) = map { $meta->{$_} or die "Required parameter missing: $_"} qw/files generator runner judge testcnt/;
  84
  85                 $generator = safe_can Generator => generate => $generator;
  86                 $runner = safe_can Runner => run => $runner;
  87                 $judge = safe_can Judge => judge => $judge;
  88
  89                 for my $test (1 .. $testcnt) {
  90                         my $start_time = time;
  91                         my $result;
  92                         try {
  93                                 $generator->($test, $meta);
  94                                 $result = $runner->($test, $meta);
  95                         } catch {
  96                                 $result = $_;
  97                                 unless (ref $result) {
  98                                         chomp $result;
  99                                         $result = [ERR, $result];
 100                                 }
 101                         };
 102
 103                         if (ref $result) {
 104                                 get_logger->trace("Test $test result is " . $result->[1]);
 105                                 push @full_results, {id => $test, result => $result->[0], result_text => $result->[1], time => time - $start_time}
 106                         } else {
 107                                 get_logger->trace("Test $test result is $result");
 108                                 push @full_results, {id => $test, result => 0, result_text => $result, time => time - $start_time}
 109                         }
 110                         push @results, $result;
 111                         last if $meta->{judge} eq 'Absolute' && ref $result
 112                 }
 113
 114                 my %results = $judge->(@results);
 115                 $meta->{$_} = $results{$_} for keys %results;
 116         } catch {
 117                 s,(.*) at .*,$1,;
 118                 chomp;
 119                 $meta->{result} = -1;
 120                 $meta->{result_text} = $_;
 121         };
 122
 123         get_logger->info("Job result: " . $meta->{result_text});
 124         $jobr->update({
 125                 result => $meta->{result},
 126                 result_text => $meta->{result_text},
 127                 results => encode_json \@full_results,
 128                 $errors ? (errors => $errors) : ()
 129         });
 130
 131         my $log = $jobr->contest ? 'ct/' . $jobr->contest . '/log' : 'log';
 132         my $page = ($job + PAGE_SIZE - 1) / PAGE_SIZE;
 133
 134         purge "/$log/$job";
 135         purge "/$log/";
 136         purge "/$log/st";
 137         purge "/$log/page/$_" for $page - 1, $page, $page + 1;
 138 }
 139
 140 sub got_job{
 141         my $job = $_[0];
 142         my $id = $job->id;
 143         get_logger->debug("Taking job $id...");
 144         my $daemon = hostname . ":$$";
 145         $job->update({daemon => $daemon});
 146         #if (set_job_daemon $job, hostname . ":$$") {
 147         if (1) {
 148                 get_logger->debug("Succesfully taken job $id");
 149                 process $id, $job;
 150                 get_logger->debug("Job $id done");
 151         } else {
 152                 get_logger->debug("Job $id already taken");
 153         }
 154 }
 155
 156 sub run{
 157         Log::Log4perl->init('/etc/gruntmasterd/gruntmasterd-log.conf');
 158         get_logger->info("gruntmasterd $VERSION started");
 159         chdir tempdir 'gruntmasterd.XXXX', CLEANUP => 1, TMPDIR => 1;
 160         while (1) {
 161                 my $job = $db->jobs->search({daemon => undef}, {rows => 1})->first;
 162                 got_job $job if defined $job;
 163                 sleep 2 unless defined $job;
 164         }
 165 }
 166
 167 1;
 168 __END__
 169
 170 =head1 NAME
 171
 172 Gruntmaster::Daemon - Gruntmaster 6000 Online Judge -- daemon
 173
 174 =head1 SYNOPSIS
 175
 176   use Gruntmaster::Daemon;
 177   Gruntmaster::Daemon->run;
 178
 179 =head1 DESCRIPTION
 180
 181 Gruntmaster::Daemon is the daemon component of the Gruntmaster 6000 online judge.
 182
 183 =head1 AUTHOR
 184
 185 Marius Gavrilescu E<lt>marius@ieval.roE<gt>
 186
 187 =head1 COPYRIGHT AND LICENSE
 188
 189 Copyright (C) 2014 by Marius Gavrilescu
 190
 191 This library is free software: you can redistribute it and/or modify
 192 it under the terms of the GNU Affero General Public License as published by
 193 the Free Software Foundation, either version 3 of the License, or
 194 (at your option) any later version.
 195
 196
 197 =cut