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 use LWP::UserAgent;
  20
  21 use constant PAGE_SIZE => 10;
  22
  23 ##################################################
  24
  25 my $ua = LWP::UserAgent->new;
  26
  27 sub safe_can_nodie {
  28   my ($type, $sub, $name) = @_;
  29
  30   return unless $name =~ /^\w+$/;
  31   no strict 'refs';
  32   my $pkg = __PACKAGE__ . "::${type}::${name}";
  33   eval "require $pkg" or get_logger->warn("Error while requiring $pkg: $@");
  34   $pkg->can($sub);
  35 }
  36
  37 sub safe_can {
  38   my ($type, $sub, $name) = @_;
  39
  40   safe_can_nodie @_ or get_logger->logdie("No such \l$type: '$name'");
  41 }
  42
  43 sub purge {
  44         return unless $ENV{PURGE_HOST};
  45         my $req = HTTP::Request->new(PURGE => "http://$ENV{PURGE_HOST}$_[0]");
  46         $ua->request($req)
  47 }
  48
  49 sub process{
  50   my $job = shift;
  51
  52   my @results;
  53   my @full_results = ();
  54   my $meta = {};
  55   our $errors = '';
  56   try {
  57         $meta = job_inmeta $job;
  58         if (job_problem $job) {
  59           my $pbmeta = problem_meta job_problem $job;
  60           my %files = exists $meta->{files} ? %{$meta->{files}} : ();
  61           $meta = {%$meta, %$pbmeta};
  62           $meta->{files} = {%files, %{$pbmeta->{files}}} if exists $pbmeta->{files};
  63         }
  64
  65         prepare_files $meta;
  66         chomp $errors;
  67
  68         my ($files, $generator, $runner, $judge, $testcnt) = map { $meta->{$_} or die "Required parameter missing: $_"} qw/files generator runner judge testcnt/;
  69
  70         $generator = safe_can Generator => generate => $generator;
  71         $runner = safe_can Runner => run => $runner;
  72         $judge = safe_can Judge => judge => $judge;
  73
  74         for my $test (1 .. $testcnt) {
  75           my $start_time = time;
  76           my $result;
  77           try {
  78                 $generator->($test, $meta);
  79                 $result = $runner->($test, $meta);
  80           } catch {
  81                 $result = $_;
  82                 unless (ref $result) {
  83                   chomp $result;
  84                   $result = [ERR, $result];
  85                 }
  86           };
  87
  88           if (ref $result) {
  89                 get_logger->trace("Test $test result is " . $result->[1]);
  90                 push @full_results, {id => $test, result => $result->[0], result_text => $result->[1], time => time - $start_time}
  91           } else {
  92                 get_logger->trace("Test $test result is $result");
  93                 push @full_results, {id => $test, result => 0, result_text => $result, time => time - $start_time}
  94           }
  95           push @results, $result;
  96           last if $meta->{judge} eq 'Absolute' && ref $result
  97         }
  98
  99         my %results = $judge->(@results);
 100         $meta->{$_} = $results{$_} for keys %results;
 101   } catch {
 102         s,(.*) at .*,$1,;
 103         chomp;
 104         $meta->{result} = -1;
 105         $meta->{result_text} = $_;
 106   };
 107
 108   get_logger->info("Job result: " . $meta->{result_text});
 109   set_job_result $job, $meta->{result};
 110   set_job_result_text $job, $meta->{result_text};
 111   set_job_results $job, \@full_results if scalar @full_results;
 112   set_job_errors $job, $errors;
 113
 114   my $log = $Gruntmaster::Data::contest ? "ct/$Gruntmaster::Data::contest/log" : 'log';
 115
 116   PUBLISH gensrc => ($Gruntmaster::Data::contest // '') . ".$job";
 117   PUBLISH genpage => "$log/job/$job.html";
 118   PUBLISH genpage => "$log/index.html";
 119   PUBLISH genpage => "$log/st.html";
 120   my $page = ($job + PAGE_SIZE - 1) / PAGE_SIZE;
 121   PUBLISH genpage => "$log/@{[$page - 1]}.html";
 122   PUBLISH genpage => "$log/$page.html";
 123   PUBLISH genpage => "$log/@{[$page + 1]}.html";
 124
 125   purge "/$log/job/$job";
 126   purge "/$log/";
 127   purge "/$log/st";
 128   purge "/$log/$_" for $page - 1, $page, $page + 1;
 129 }
 130
 131 sub got_job{
 132         $_[0] =~ /^(\w*)\.(\d+)$/;
 133         my $job = $2;
 134         local $Gruntmaster::Data::contest = $1 if $1;
 135         get_logger->debug("Taking job $job@{[defined $1 ? \" of contest $1\" : '']}...");
 136         if (set_job_daemon $job, hostname . ":$$") {
 137                 get_logger->debug("Succesfully taken job $job");
 138                 process $job;
 139                 get_logger->debug("Job $job done");
 140         } else {
 141                 get_logger->debug("Job $job already taken");
 142         }
 143 }
 144
 145 sub run{
 146   Log::Log4perl->init('/etc/gruntmasterd/gruntmasterd-log.conf');
 147   get_logger->info("gruntmasterd $VERSION started");
 148   chdir tempdir 'gruntmasterd.XXXX', CLEANUP => 1, TMPDIR => 1;
 149   SUBSCRIBE jobs => \&got_job;
 150   WAIT_FOR_MESSAGES 86400 while 1
 151 }
 152
 153 1;
 154 __END__
 155
 156 =head1 NAME
 157
 158 Gruntmaster::Daemon - Gruntmaster 6000 Online Judge -- daemon
 159
 160 =head1 SYNOPSIS
 161
 162   use Gruntmaster::Daemon;
 163   Gruntmaster::Daemon->run;
 164
 165 =head1 DESCRIPTION
 166
 167 Gruntmaster::Daemon is the daemon component of the Gruntmaster 6000 online judge.
 168
 169 =head1 AUTHOR
 170
 171 Marius Gavrilescu E<lt>marius@ieval.roE<gt>
 172
 173 =head1 COPYRIGHT AND LICENSE
 174
 175 Copyright (C) 2014 by Marius Gavrilescu
 176
 177 This library is free software: you can redistribute it and/or modify
 178 it under the terms of the GNU Affero General Public License as published by
 179 the Free Software Foundation, either version 3 of the License, or
 180 (at your option) any later version.
 181
 182
 183 =cut