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Diff for /loncom/homework/bridgetask.pm between versions 1.30 and 1.33

version 1.30, 2005/05/24 19:33:28 version 1.33, 2005/05/27 21:13:46
Line 144  sub add_grading_button { Line 144  sub add_grading_button {
     my $result=' <input type="submit" name="gradeasubmission" value="'.      my $result=' <input type="submit" name="gradeasubmission" value="'.
  &mt("Get a submission to grade").'" />';   &mt("Get a submission to grade").'" />';
     $result.='<input type="hidden" name="grade_target" value="webgrade" />';      $result.='<input type="hidden" name="grade_target" value="webgrade" />';
       if ( 1) {
    #need a permissions for limitng this to 'powerful users'
    #check if review queue has items
    $result.=' <input type="submit" name="reviewasubmission" value="'.
       &mt("Select an entry from the review queue").'" />'."\n";
    $result.=' <input type="submit" name="reviewagrading" value="'.
       &mt("Select an entry from the grading queue").'" />'."\n";
       }
     return $result;      return $result;
 }  }
   
Line 266  sub start_Task { Line 274  sub start_Task {
  }   }
     } elsif ( ($target eq 'grade' && $env{'form.webgrade'}) ||      } elsif ( ($target eq 'grade' && $env{'form.webgrade'}) ||
       $target eq 'webgrade') {        $target eq 'webgrade') {
    my $webgrade='yes';
  if ($target eq 'webgrade') {   if ($target eq 'webgrade') {
     $result.=$head_tag_start.$body_tag_start.$form_tag_start;      $result.=$head_tag_start.$body_tag_start;
     $result.='<input type="hidden" name="webgrade" value="yes" />';      $result.='<br />Review'.&show_queue('reviewqueue');
     $result.='<br />Before'.&show_queue('gradingqueue');      $result.='<br />Grade'.&show_queue('gradingqueue');
  }   }
  my $todo;   # FIXME Blast! still need to reorg this, need to reshow the
  # don't get something new from the queue if they hit the stop button          #       queue being reviewed once done with the grade pass...
  if (!($env{'form.stop'} && $target eq 'webgrade')) {          #       Hrrm, vaildation pass should perhaps say 'not_locked'
     $todo=&get_from_queue('gradingqueue');          #       perhaps do a search if there is a key that is mine and if
  }          #       there isn't reshow the queue....
    my ($todo,$status_code)=&get_key_todo($target);
   
    &Apache::lonnet::logthis("got todo -$todo- stat -$status_code-");
  if ($todo) {   if ($todo) {
     &setup_env_for_other_user($todo,$safeeval);      &setup_env_for_other_user($todo,$safeeval);
     my ($symb,$uname,$udom)=&decode_queue_key($todo);      my ($symb,$uname,$udom)=&decode_queue_key($todo);
     $result.="\n".'<table><tr><td>Found '.      $result.="\n".'<table><tr><td>Found '.
  &Apache::lonnet::gettitle($symb).' for '.$uname.' at '.$udom.'</td></tr></table>';   &Apache::lonnet::gettitle($symb).' for '.$uname.' at '.$udom.'</td></tr></table>';
     $result.='<input type="hidden" name="gradingkey" value="'.      $form_tag_start.=
    '<input type="hidden" name="gradingkey" value="'.
  &Apache::lonnet::escape($todo).'" />';   &Apache::lonnet::escape($todo).'" />';
     $Apache::bridgetask::queue_key=$todo;      $Apache::bridgetask::queue_key=$todo;
     &Apache::structuretags::initialize_storage();      &Apache::structuretags::initialize_storage();
     &Apache::lonhomework::showhash(%Apache::lonhomework::history);      &Apache::lonhomework::showhash(%Apache::lonhomework::history);
     if ($target eq 'webgrade') {      if ($target eq 'webgrade') {
  $result.='<br />After'.&show_queue('gradingqueue');   $result.='<br />After -'.&show_queue($env{'form.queue'});
  $result.="\n".'<table width="100%" style="width:100%" border="1">';   $result.="\n".'<table width="100%" style="width:100%" border="1">';
    if ($status_code eq 'selected') {
       $form_tag_start.=
    '<input type="hidden" name="queuemode" value="selected" />';
    }
     }      }
  } else {   } else {
     if ($target eq 'webgrade') {      if ($target eq 'webgrade') {
  $result.="\n".'<table><tr><td><b>';   $result.="\n";
  if ($env{'form.stop'}) {   if      ($status_code eq 'stop') {
     $result.=&mt("Stopped grading.");      $result.='<b>'.&mt("Stopped grading.").'</b>';
    } elsif ($status_code eq 'lock_failed') {
       $result.='<b>'.&mt("Failed to lock the request record.").'</b>';
    } elsif ($status_code eq 'unlock') {
       $result.='<b>'.&mt("Unlocked the requested record.").'</b>';
       $result.=&show_queue($env{'form.queue'},1);
    } elsif ($status_code eq 'show_list') {
       $result.=&show_queue($env{'form.queue'},1);
  } else {   } else {
     $result.=&mt("No user to be graded.");      $result.='<b>'.&mt("No user to be graded.").'</b>';
  }   }
  $result.='</b></td></tr></table>';  
     }      }
       $webgrade='no';
     my $bodytext=&Apache::lonxml::get_all_text("/task",$parser);      my $bodytext=&Apache::lonxml::get_all_text("/task",$parser);
  }   }
    if ($target eq 'webgrade' && defined($env{'form.queue'})) {
       $result.=$form_tag_start;
       $result.='<input type="hidden" name="webgrade" value="'.
    $webgrade.'" />';
       $result.='<input type="hidden" name="queue" value="'.
    $env{'form.queue'}.'" />';
    }
     } else {      } else {
  # page_start returned a starting result, delete it if we don't need it   # page_start returned a starting result, delete it if we don't need it
  $result = '';   $result = '';
Line 309  sub start_Task { Line 340  sub start_Task {
     return $result;      return $result;
 }  }
   
   sub get_key_todo {
       my ($target)=@_;
       my $todo;
   
       if (defined($env{'form.reviewasubmission'})) {
    &Apache::lonnet::logthis("review a submission....");
    $env{'form.queue'}='reviewqueue';
    return (undef,'show_list');
       }
   
       if (defined($env{'form.reviewagrading'})) {
    &Apache::lonxml::debug("review a grading....");
    $env{'form.queue'}='gradingqueue';
    return (undef,'show_list');
       }
   
       my $queue=$env{'form.queue'};
   
       if (!defined($queue)) {
    $env{'form.queue'}=$queue='gradingqueue';
       }
   
       my $gradingkey=&Apache::lonnet::unescape($env{'form.gradingkey'});
   
       if (defined($env{'form.queue'}) && defined($env{'form.gradingkey'})
    && !defined($env{'form.gradingaction'}) 
    && $env{'form.queuemode'} eq 'selected') {
   
    my $who=&queue_key_locked($queue,$gradingkey);
    my $me=$env{'user.name'}.'@'.$env{'user.domain'};
    if ($who eq $me) {
       &Apache::lonxml::debug("Found a key was given to me");
       return ($gradingkey,'selected');
    } else {
       return (undef,'show_list');
    }
   
       }
   
       if ($target eq 'webgrade' && $env{'form.queuemode'} eq 'selected') {
    if ($env{'form.gradingaction'} eq 'resume') {
       delete($env{'form.gradingaction'});
       &Apache::lonxml::debug("Resuming a key");
       return ($gradingkey);
    } elsif ($env{'form.gradingaction'} eq 'unlock') {
       &Apache::lonxml::debug("Unlocking a key ".
        &check_queue_unlock($queue,$gradingkey,1));
       return (undef,'unlock');
    } elsif ($env{'form.gradingaction'} eq 'select') {
       &Apache::lonxml::debug("Locking a key");
       if (&lock_key($queue,$gradingkey)) {
    &Apache::lonxml::debug("Success $queue");
    return ($gradingkey);
       }
       &Apache::lonxml::debug("Failed $queue");
       return (undef,'lock_failed');
    }
       }
   
       if ($env{'form.queuemode'} ne 'selected') {
    # don't get something new from the queue if they hit the stop button
       if (!($env{'form.stop'} && $target eq 'webgrade') 
       && !$env{'form.gradingaction'}) {
       &Apache::lonxml::debug("Getting anew $queue");
       return (&get_from_queue($queue));
    } else {
       return (undef,'stop');
    }
       }
       return (undef,undef)
   }
   
 sub end_Task {  sub end_Task {
     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;      my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
     my $result='';      my $result='';
Line 351  sub end_Task { Line 454  sub end_Task {
     &Apache::lonhomework::showhash(%Apache::lonhomework::results);      &Apache::lonhomework::showhash(%Apache::lonhomework::results);
     &Apache::structuretags::finalize_storage();      &Apache::structuretags::finalize_storage();
     if ($award eq 'SUBMITTED') {      if ($award eq 'SUBMITTED') {
  &add_to_queue('gradingqueue');   &add_to_queue('gradingqueue',$Apache::inputtags::slot_name);
     }      }
  }   }
  if ($target eq 'grade' && $env{'form.webgrade'}) {   if ($target eq 'grade' && $env{'form.webgrade'} eq 'yes') {
     my $optional_required=      my $optional_required=
  &Apache::lonxml::get_param('OptionalRequired',$parstack,   &Apache::lonxml::get_param('OptionalRequired',$parstack,
    $safeeval);     $safeeval);
Line 386  sub end_Task { Line 489  sub end_Task {
  $env{'user.name'}.'@'.$env{'user.domain'};   $env{'user.name'}.'@'.$env{'user.domain'};
     if ($review) {      if ($review) {
  $Apache::lonhomework::results{"resource.$version.status"}='review';   $Apache::lonhomework::results{"resource.$version.status"}='review';
  &move_to_review_queue();   if ($env{'form.queue'} eq 'reviewqueue') {
       &check_queue_unlock($env{'form.queue'});
       &Apache::lonxml::debug(" still needs review not changing status.");
    } else {
       &move_between_queues('gradingqueue','reviewqueue');
    }
     } elsif ($ungraded) {      } elsif ($ungraded) {
  $Apache::lonhomework::results{"resource.$version.status"}='ungraded';   $Apache::lonhomework::results{"resource.$version.status"}='ungraded';
  &check_queue_unlock('gradingqueue');   # FIXME if in review queue need to move back to grading queue
    if ($env{'form.queue'} eq 'reviewqueue') {
       &Apache::lonxml::debug("moving back.");
       &move_between_queues('reviewqueue','gradingqueue');
    } else {
       &check_queue_unlock($env{'form.queue'});
    }
     } elsif ($mandatory_failed) {      } elsif ($mandatory_failed) {
  $Apache::lonhomework::results{"resource.$version.status"}='fail';   $Apache::lonhomework::results{"resource.$version.status"}='fail';
  $Apache::lonhomework::results{"resource.$version.0.solved"}='incorrect_by_override';   $Apache::lonhomework::results{"resource.$version.0.solved"}='incorrect_by_override';
  $Apache::lonhomework::results{"resource.$version.0.award"}='INCORRECT';   $Apache::lonhomework::results{"resource.$version.0.award"}='INCORRECT';
  $Apache::lonhomework::results{"resource.$version.0.awarded"}='0';   $Apache::lonhomework::results{"resource.$version.0.awarded"}='0';
  &remove_from_queue('gradingqueue');   &remove_from_queue($env{'form.queue'});
     } else {      } else {
  $Apache::lonhomework::results{"resource.$version.status"}='pass';   $Apache::lonhomework::results{"resource.$version.status"}='pass';
  $Apache::lonhomework::results{"resource.$version.0.solved"}='correct_by_override';   $Apache::lonhomework::results{"resource.$version.0.solved"}='correct_by_override';
  $Apache::lonhomework::results{"resource.$version.0.award"}='EXACT_ANS';   $Apache::lonhomework::results{"resource.$version.0.award"}='EXACT_ANS';
  $Apache::lonhomework::results{"resource.$version.0.awarded"}='1';   $Apache::lonhomework::results{"resource.$version.0.awarded"}='1';
  &remove_from_queue();   &remove_from_queue($env{'form.queue'});
     }      }
     $Apache::lonhomework::results{"resource.status"}=      $Apache::lonhomework::results{"resource.status"}=
  $Apache::lonhomework::results{"resource.$version.status"};   $Apache::lonhomework::results{"resource.$version.status"};
Line 435  sub end_Task { Line 549  sub end_Task {
     return $result;      return $result;
 }  }
   
 sub move_to_review_queue {  sub move_between_queues {
       my ($src_queue,$dest_queue)=@_;
     &Apache::lonxml::debug("Want to move");      my $cur_data=&get_queue_data($src_queue);
       if (!$cur_data) { return 'not_exist'; }
       my $result=&add_to_queue($dest_queue,$cur_data->[0]);
       if ($result ne 'ok') {
    return $result;
       }
       &check_queue_unlock($src_queue);
       return &remove_from_queue($src_queue);
 }  }
   
 sub check_queue_unlock {  sub check_queue_unlock {
     my ($queue)=@_;      my ($queue,$key,$allow_not_me)=@_;
     my ($symb,$cid,$udom,$uname)=&Apache::lonxml::whichuser();      my ($symb,$cid,$udom,$uname)=&Apache::lonxml::whichuser();
       if (!defined($key)) {
    $key="$symb\0queue\0$uname\@$udom";
       }
     my $cnum=$env{'course.'.$cid.'.num'};      my $cnum=$env{'course.'.$cid.'.num'};
     my $cdom=$env{'course.'.$cid.'.domain'};      my $cdom=$env{'course.'.$cid.'.domain'};
     my $key="$symb\0queue\0$uname\@$udom";  
     my $me=$env{'user.name'}.'@'.$env{'user.domain'};      my $me=$env{'user.name'}.'@'.$env{'user.domain'};
     my $who=&queue_key_locked($queue,$key,$cdom,$cnum);      my $who=&queue_key_locked($queue,$key,$cdom,$cnum);
     if  ($who eq $me) {      if  ($who eq $me) {
  &Apache::lonnet::del($queue,["$key\0locked"],$cdom,$cnum);   return &Apache::lonnet::del($queue,["$key\0locked"],$cdom,$cnum);
       } elsif ($allow_not_me) {
    &Apache::lonxml::debug("unlocking $who by $me");
    return &Apache::lonnet::del($queue,["$key\0locked"],$cdom,$cnum);
     }      }
       return 'not_owner';
 }  }
   
 sub remove_from_queue {  sub remove_from_queue {
Line 460  sub remove_from_queue { Line 587  sub remove_from_queue {
     my $cdom=$env{'course.'.$cid.'.domain'};      my $cdom=$env{'course.'.$cid.'.domain'};
     my $key="$symb\0queue\0$uname\@$udom";      my $key="$symb\0queue\0$uname\@$udom";
     my @keys=($key,"$key\0locked");      my @keys=($key,"$key\0locked");
     &Apache::lonnet::del($queue,\@keys,$cdom,$cnum);      return &Apache::lonnet::del($queue,\@keys,$cdom,$cnum);
 }  }
   
 sub setup_env_for_other_user {  sub setup_env_for_other_user {
Line 474  sub setup_env_for_other_user { Line 601  sub setup_env_for_other_user {
     &Apache::lonxml::initialize_rndseed($safeeval);      &Apache::lonxml::initialize_rndseed($safeeval);
 }  }
   
 sub add_to_queue {  sub get_queue_data {
     my ($queue)=@_;      my ($queue)=@_;
     my ($symb,$cid,$udom,$uname)=&Apache::lonxml::whichuser();      my ($symb,$cid,$udom,$uname)=&Apache::lonxml::whichuser();
     my $cnum=$env{'course.'.$cid.'.num'};      my $cnum=$env{'course.'.$cid.'.num'};
     my $cdom=$env{'course.'.$cid.'.domain'};      my $cdom=$env{'course.'.$cid.'.domain'};
       my $todo="$symb\0queue\0$uname\@$udom";
       my ($key,$value)=&Apache::lonnet::get($queue,[$todo],$cdom,$cnum);
       if ($key eq $todo && ref($value)) {
    return $value;
       }
       return undef;
   }
   
   sub add_to_queue {
       my ($queue,$slot_name)=@_;
       my ($symb,$cid,$udom,$uname)=&Apache::lonxml::whichuser();
       my $cnum=$env{'course.'.$cid.'.num'};
       my $cdom=$env{'course.'.$cid.'.domain'};
     my %data;      my %data;
     $data{"$symb\0queue\0$uname\@$udom"}=[$Apache::inputtags::slot_name];      $data{"$symb\0queue\0$uname\@$udom"}=[$slot_name];
     &Apache::lonnet::put($queue,\%data,$cdom,$cnum);      return &Apache::lonnet::put($queue,\%data,$cdom,$cnum);
 }  }
   
 sub show_queue {  sub show_queue {
     my ($queue)=@_;      my ($queue,$with_selects)=@_;
     my $result;      my $result;
     my ($symb,$cid,$udom,$uname)=&Apache::lonxml::whichuser();      my ($symb,$cid,$udom,$uname)=&Apache::lonxml::whichuser();
     my $cnum=$env{'course.'.$cid.'.num'};      my $cnum=$env{'course.'.$cid.'.num'};
     my $cdom=$env{'course.'.$cid.'.domain'};      my $cdom=$env{'course.'.$cid.'.domain'};
     my $regexp="^$symb\0";      my $regexp="^$symb\0";
     my %queue=&Apache::lonnet::dump($queue,$cdom,$cnum,$regexp);      my %queue=&Apache::lonnet::dump($queue,$cdom,$cnum,$regexp);
     $result.="\n<h3>Current Queue</h3><table border='1'><tr><th>resource</th>".      my ($tmp)=%queue;
  "<th>user</th><th>type</th><th>data</th></tr>";      if ($tmp=~/^error: 2 /) {
    return "\n<h3>Current Queue - $queue</h3><table border='1'><tr><td>Empty</td></tr></table>";
       }
       $result.="\n<h3>Current Queue - $queue </h3><table border='1'><tr>";
       if ($with_selects) { $result.="<th></th>"; }
       $result.="<th>resource</th><th>user</th><th>type</th><th>data</th></tr>";
     foreach my $key (sort(keys(%queue))) {      foreach my $key (sort(keys(%queue))) {
  if ($key=~/locked$/) {   if ($key=~/locked$/ && !$with_selects) {
     my ($symb,$uname,$udom) = &decode_queue_key($key);      my ($symb,$uname,$udom) = &decode_queue_key($key);
     my $title=&Apache::lonnet::gettitle($symb);      my $title=&Apache::lonnet::gettitle($symb);
     $result.="<tr><td>$title</td><td>$uname</td>";      $result.="<tr><td>$title</td><td>$uname</td>";
     $result.='<td>lock</td><td>'.$queue{$key}.'</td></tr>';      $result.='<td>lock</td><td>'.$queue{$key}.'</td></tr>';
  } elsif ($key=~/timestamp$/) {   } elsif ($key=~/timestamp$/ && !$with_selects) {
     my ($symb,undef) = split("\0",$key);      my ($symb,undef) = split("\0",$key);
     my $title=&Apache::lonnet::gettitle($symb);      my $title=&Apache::lonnet::gettitle($symb);
     $result.="<tr><td>$title</td><td></td>";      $result.="<tr><td>$title</td><td></td>";
     $result.='<td>last queue modification time</td><td>'.      $result.='<td>last queue modification time</td><td>'.
  &Apache::lonlocal::locallocaltime($queue{$key})."</td></tr>";   &Apache::lonlocal::locallocaltime($queue{$key})."</td></tr>";
  } else {   } elsif ($key!~/(timestamp|locked)$/) {
     my ($symb,$uname,$udom) = &decode_queue_key($key);      my ($symb,$uname,$udom) = &decode_queue_key($key);
     my $title=&Apache::lonnet::gettitle($symb);      my $title=&Apache::lonnet::gettitle($symb);
     $result.="<tr><td>$title</td><td>$uname</td>";      $result.="<tr>";
       if ($with_selects) {
    my $ekey=&Apache::lonnet::escape($key);
    my ($action,$description)=('select',&mt('Select'));
    if (exists($queue{"$key\0locked"})) {
       my $me=$env{'user.name'}.'@'.$env{'user.domain'};
       if ($me eq $queue{"$key\0locked"}) {
    ($action,$description)=('resume',&mt('Resume'));
       } else {
    ($action,$description)=('unlock',&mt('Unlock'));
       }
    }
    $result.=(<<FORM);
   <td>
   <form method="POST">
    <input type="hidden" name="gradingkey" value="$ekey" />
    <input type="hidden" name="queue" value="$queue" />
    <input type="hidden" name="gradingaction" value="$action" />
    <input type="hidden" name="webgrade" value="no" />
    <input type="hidden" name="queuemode" value="selected" />
    <input type="submit" name="submit" value="$description" />
   </form>
   </td>
   FORM
       }
       $result.="<td>$title</td><td>$uname</td>";
     my $slot=$queue{$key}->[0];      my $slot=$queue{$key}->[0];
     my %slot_data=&Apache::lonnet::get_slot($slot);      my %slot_data=&Apache::lonnet::get_slot($slot);
     $result.='<td>queue entry</td><td>Slot: '.$slot.' End time: '.      $result.='<td>queue entry</td><td>Slot: '.$slot.' End time: '.
Line 530  sub decode_queue_key { Line 700  sub decode_queue_key {
   
 sub queue_key_locked {  sub queue_key_locked {
     my ($queue,$key,$cdom,$cnum)=@_;      my ($queue,$key,$cdom,$cnum)=@_;
       if (!defined($cdom) || !defined($cnum)) {
    my (undef,$cid)=&Apache::lonxml::whichuser();
    $cnum=$env{'course.'.$cid.'.num'};
    $cdom=$env{'course.'.$cid.'.domain'};
       }
     my ($key_locked,$value)=      my ($key_locked,$value)=
  &Apache::lonnet::get($queue,["$key\0locked"],$cdom,$cnum);   &Apache::lonnet::get($queue,["$key\0locked"],$cdom,$cnum);
     if ($key_locked eq "$key\0locked") {      if ($key_locked eq "$key\0locked") {
Line 545  sub pick_from_queue_data { Line 720  sub pick_from_queue_data {
  if ($check_section) {   if ($check_section) {
     my $section=&Apache::lonnet::getsection($uname,$udom);      my $section=&Apache::lonnet::getsection($uname,$udom);
     if ($section eq $check_section) {      if ($section eq $check_section) {
  &Apache::lonnet::logthis("my sec");   &Apache::lonxml::debug("my sec");
  next;   next;
     }      }
  }   }
  my $slot=$queuedata->{$key}[0];   my $slot=$queuedata->{$key}[0];
  my %slot_data=&Apache::lonnet::get_slot($slot);   my %slot_data=&Apache::lonnet::get_slot($slot);
  if ($slot_data{'endtime'} > time) {    if ($slot_data{'endtime'} > time) { 
     &Apache::lonnet::logthis("not time");      &Apache::lonxml::debug("not time");
     next;      next;
  }   }
  if (&queue_key_locked($queue,$key,$cdom,$cnum)) {   if (&queue_key_locked($queue,$key,$cdom,$cnum)) {
     &Apache::lonnet::logthis("someone already has um.");      &Apache::lonxml::debug("someone already has um.");
     next;      next;
  }   }
  return $key;   return $key;
Line 585  sub find_mid_grade { Line 760  sub find_mid_grade {
     return undef;      return undef;
 }  }
   
   sub lock_key {
       my ($queue,$todo)=@_;
       my $me=$env{'user.name'}.'@'.$env{'user.domain'};
       my (undef,$cid)=&Apache::lonxml::whichuser();
       my $cnum=$env{'course.'.$cid.'.num'};
       my $cdom=$env{'course.'.$cid.'.domain'};
       my $success=&Apache::lonnet::newput($queue,{"$todo\0locked"=> $me},
    $cdom,$cnum);
       &Apache::lonxml::debug("success $success $todo");
       if ($success eq 'ok') {
    return 1;
       }
       return 0;
   }
   
 sub get_from_queue {  sub get_from_queue {
     my ($queue)=@_;      my ($queue)=@_;
     my $result;      my $result;
     my ($symb,$cid,$udom,$uname)=&Apache::lonxml::whichuser();      my ($symb,$cid,$udom,$uname)=&Apache::lonxml::whichuser();
     my $cnum=$env{'course.'.$cid.'.num'};      my $cnum=$env{'course.'.$cid.'.num'};
     my $cdom=$env{'course.'.$cid.'.domain'};      my $cdom=$env{'course.'.$cid.'.domain'};
     my $todo;      my $todo=&find_mid_grade($queue,$symb,$cdom,$cnum);
     # FIXME need to find if I am 'mid grading'      &Apache::lonxml::debug("found ".join(':',&decode_queue_key($todo)));
     $todo=&find_mid_grade($queue,$symb,$cdom,$cnum);  
     &Apache::lonnet::logthis("found ".join(':',&decode_queue_key($todo)));  
     if ($todo) { return $todo; }      if ($todo) { return $todo; }
     while (1) {      while (1) {
  my $starttime=time;   my $starttime=time;
  &Apache::lonnet::put($queue,{"$symb\0timestamp"=>$starttime},   &Apache::lonnet::put($queue,{"$symb\0timestamp"=>$starttime},
      $cdom,$cnum);       $cdom,$cnum);
  &Apache::lonnet::logthis("$starttime");   &Apache::lonxml::debug("$starttime");
  my $regexp="^$symb\0queue\0";   my $regexp="^$symb\0queue\0";
  my %queue=&Apache::lonnet::dump($queue,$cdom,$cnum,$regexp);   my %queue=&Apache::lonnet::dump($queue,$cdom,$cnum,$regexp);
  #make a pass looking for a user in my section   #make a pass looking for a user _not_ in my section
  if ($env{'request.course.sec'}) {   if ($env{'request.course.sec'}) {
     &Apache::lonnet::logthis("sce");      &Apache::lonxml::debug("sce");
     $todo=&pick_from_queue_data($queue,$env{'request.course.sec'},      $todo=&pick_from_queue_data($queue,$env{'request.course.sec'},
  \%queue,$cdom,$cnum);   \%queue,$cdom,$cnum);
     &Apache::lonnet::logthis("sce $todo");      &Apache::lonxml::debug("sce $todo");
  }   }
  # no one in our section so look for any user that is ready for grading   # no one _not_ in our section so look for any user that is
    # ready for grading
  if (!$todo) {   if (!$todo) {
     &Apache::lonnet::logthis("no sce");      &Apache::lonxml::debug("no sce");
     $todo=&pick_from_queue_data($env{'request.course.sec'},\%queue,      $todo=&pick_from_queue_data($queue,$env{'request.course.sec'},
  $cdom,$cnum);   \%queue,$cdom,$cnum);
     &Apache::lonnet::logthis("no sce $todo");      &Apache::lonxml::debug("no sce $todo");
  }   }
  # no user to grade    # no user to grade 
  if (!$todo) { last; }   if (!$todo) { last; }
  &Apache::lonnet::logthis("got $todo");   &Apache::lonxml::debug("got $todo");
  # otherwise found someone so lets try to lock them   # otherwise found someone so lets try to lock them
  my $success=&Apache::lonnet::newput($queue,   # unless someone else already picked them
     {"$todo\0locked"=>   if (!&lock_key($queue,$todo)) { next; }
  $env{'user.name'}.'@'.$env{'user.domain'}},  
    $cdom,$cnum);  
  # someone else already picked them  
  &Apache::lonnet::logthis("success $todo");  
  if ($success ne 'ok') { next; }  
  my (undef,$endtime)=   my (undef,$endtime)=
     &Apache::lonnet::get($queue,["$symb\0timestamp"],      &Apache::lonnet::get($queue,["$symb\0timestamp"],
  $cdom,$cnum);   $cdom,$cnum);
  &Apache::lonnet::logthis("emd  $endtime");   &Apache::lonxml::debug("emd  $endtime");
  # someone else already modified the queue,    # someone else already modified the queue, 
  # perhaps our picked user wass already fully graded between   # perhaps our picked user wass already fully graded between
  # when we picked him and when we locked his record? so lets   # when we picked him and when we locked his record? so lets
Line 640  sub get_from_queue { Line 824  sub get_from_queue {
     my ($key,$value)=      my ($key,$value)=
  &Apache::lonnet::get($queue,["$todo"],   &Apache::lonnet::get($queue,["$todo"],
      $cdom,$cnum);       $cdom,$cnum);
     &Apache::lonnet::logthis("check  $key .. $value");      &Apache::lonxml::debug("check  $key .. $value");
     if ($key eq $todo && ref($value)) {      if ($key eq $todo && ref($value)) {
     } else {      } else {
  &Apache::lonnet::del($queue,["$todo\0locked"],   &Apache::lonnet::del($queue,["$todo\0locked"],
      $cdom,$cnum);       $cdom,$cnum);
  &Apache::lonnet::logthis("del");   &Apache::lonxml::debug("del");
  next;   next;
     }      }
  }   }
  &Apache::lonnet::logthis("last $todo");   &Apache::lonxml::debug("last $todo");
  last;   last;
     }      }
     return $todo;      return $todo;
Line 696  sub start_Dimension { Line 880  sub start_Dimension {
 }  }
   
 sub get_instance {  sub get_instance {
     #FIXME just grabbing the first one for now, need  
     #to randomly pick one until all have been seen  
     #then start repicking  
     &Apache::response::pushrandomnumber();      &Apache::response::pushrandomnumber();
     my @order=&Math::Random::random_permutation(@{$dimension{'instances'}});      my @order=&Math::Random::random_permutation(@{$dimension{'instances'}});
     my $num=@order;      my $num=@order;
Removed from v.1.30  
changed lines
  Added in v.1.33

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