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Diff for /loncom/lonnet/perl/lonnet.pm between versions 1.523 and 1.523.2.4

version 1.523, 2004/07/22 22:12:06 version 1.523.2.4, 2004/09/17 02:41:21
Line 50  use Fcntl qw(:flock); Line 50  use Fcntl qw(:flock);
 use Apache::loncoursedata;  use Apache::loncoursedata;
 use Apache::lonlocal;  use Apache::lonlocal;
 use Storable qw(lock_store lock_nstore lock_retrieve freeze thaw);  use Storable qw(lock_store lock_nstore lock_retrieve freeze thaw);
 use Time::HiRes();  use Time::HiRes qw( gettimeofday tv_interval );
 my $readit;  my $readit;
   
 =pod  =pod
Line 827  sub devalidate_cache { Line 827  sub devalidate_cache {
     my ($cache,$id,$name) = @_;      my ($cache,$id,$name) = @_;
     delete $$cache{$id.'.time'};      delete $$cache{$id.'.time'};
     delete $$cache{$id};      delete $$cache{$id};
     if ($disk_caching_disabled) { return; }      if (1 || $disk_caching_disabled) { return; }
     my $filename=$perlvar{'lonDaemons'}.'/tmp/lonnet_internal_cache_'.$name.".db";      my $filename=$perlvar{'lonDaemons'}.'/tmp/lonnet_internal_cache_'.$name.".db";
     open(DB,"$filename.lock");      if (!-e $filename) { return; }
       open(DB,">$filename.lock");
     flock(DB,LOCK_EX);      flock(DB,LOCK_EX);
     my %hash;      my %hash;
     if (tie(%hash,'GDBM_File',$filename,&GDBM_WRCREAT(),0640)) {      if (tie(%hash,'GDBM_File',$filename,&GDBM_WRCREAT(),0640)) {
Line 856  sub is_cached { Line 857  sub is_cached {
     my ($cache,$id,$name,$time) = @_;      my ($cache,$id,$name,$time) = @_;
     if (!$time) { $time=300; }      if (!$time) { $time=300; }
     if (!exists($$cache{$id.'.time'})) {      if (!exists($$cache{$id.'.time'})) {
  &load_cache_item($cache,$name,$id);   &load_cache_item($cache,$name,$id,$time);
     }      }
     if (!exists($$cache{$id.'.time'})) {      if (!exists($$cache{$id.'.time'})) {
 # &logthis("Didn't find $id");  # &logthis("Didn't find $id");
Line 881  sub do_cache { Line 882  sub do_cache {
     $$cache{$id};      $$cache{$id};
 }  }
   
   my %do_save_item;
   my %do_save;
 sub save_cache_item {  sub save_cache_item {
     my ($cache,$name,$id)=@_;      my ($cache,$name,$id)=@_;
     if ($disk_caching_disabled) { return; }      if ($disk_caching_disabled) { return; }
     my $starttime=&Time::HiRes::time();      $do_save{$name}=$cache;
 #    &logthis("Saving :$name:$id");      if (!exists($do_save_item{$name})) { $do_save_item{$name}={} }
     my %hash;      $do_save_item{$name}->{$id}=1;
     my $filename=$perlvar{'lonDaemons'}.'/tmp/lonnet_internal_cache_'.$name.".db";      return;
     open(DB,"$filename.lock");  }
     flock(DB,LOCK_EX);  
     if (tie(%hash,'GDBM_File',$filename,&GDBM_WRCREAT(),0640)) {  sub save_cache {
  eval <<'EVALBLOCK';      if ($disk_caching_disabled) { return; }
     $hash{$id.'.time'}=$$cache{$id.'.time'};      my ($cache,$name,$id);
     $hash{$id}=freeze({'item'=>$$cache{$id}});      foreach $name (keys(%do_save)) {
    $cache=$do_save{$name};
   
    my $starttime=&Time::HiRes::time();
    &logthis("Saving :$name:");
    my %hash;
    my $filename=$perlvar{'lonDaemons'}.'/tmp/lonnet_internal_cache_'.$name.".db";
    open(DB,">$filename.lock");
    flock(DB,LOCK_EX);
    if (tie(%hash,'GDBM_File',$filename,&GDBM_WRCREAT(),0640)) {
       foreach $id (keys(%{ $do_save_item{$name} })) {
    eval <<'EVALBLOCK';
    $hash{$id.'.time'}=$$cache{$id.'.time'};
    $hash{$id}=freeze({'item'=>$$cache{$id}});
 EVALBLOCK  EVALBLOCK
         if ($@) {                  if ($@) {
     &logthis("<font color='red'>save_cache blew up :$@:$name</font>");      &logthis("<font color='red'>save_cache blew up :$@:$name</font>");
     unlink($filename);      unlink($filename);
  }      last;
     } else {   }
  if (-e $filename) {      }
     &logthis("Unable to tie hash (save cache item): $name ($!)");   } else {
     unlink($filename);      if (-e $filename) {
    &logthis("Unable to tie hash (save cache): $name ($!)");
    unlink($filename);
       }
  }   }
    untie(%hash);
    flock(DB,LOCK_UN);
    close(DB);
    &logthis("save_cache $name took ".(&Time::HiRes::time()-$starttime));
     }      }
     untie(%hash);      undef(%do_save);
     flock(DB,LOCK_UN);      undef(%do_save_item);
     close(DB);  
 #    &logthis("save_cache_item $name took ".(&Time::HiRes::time()-$starttime));  
 }  }
   
 sub load_cache_item {  sub load_cache_item {
     my ($cache,$name,$id)=@_;      my ($cache,$name,$id,$time)=@_;
     if ($disk_caching_disabled) { return; }      if ($disk_caching_disabled) { return; }
     my $starttime=&Time::HiRes::time();      my $starttime=&Time::HiRes::time();
 #    &logthis("Before Loading $name  for $id size is ".scalar(%$cache));  #    &logthis("Before Loading $name  for $id size is ".scalar(%$cache));
     my %hash;      my %hash;
     my $filename=$perlvar{'lonDaemons'}.'/tmp/lonnet_internal_cache_'.$name.".db";      my $filename=$perlvar{'lonDaemons'}.'/tmp/lonnet_internal_cache_'.$name.".db";
     open(DB,"$filename.lock");      if (!-e $filename) { return; }
       open(DB,">$filename.lock");
     flock(DB,LOCK_SH);      flock(DB,LOCK_SH);
     if (tie(%hash,'GDBM_File',$filename,&GDBM_READER(),0640)) {      if (tie(%hash,'GDBM_File',$filename,&GDBM_READER(),0640)) {
  eval <<'EVALBLOCK';   eval <<'EVALBLOCK';
Line 935  sub load_cache_item { Line 958  sub load_cache_item {
  }   }
 #    &logthis("Initial load: $count");  #    &logthis("Initial load: $count");
     } else {      } else {
  my $hashref=thaw($hash{$id});   if (($$cache{$id.'.time'}+$time) < time) {
  $$cache{$id}=$hashref->{'item'};      $$cache{$id.'.time'}=$hash{$id.'.time'};
  $$cache{$id.'.time'}=$hash{$id.'.time'};      my $hashref=thaw($hash{$id});
       $$cache{$id}=$hashref->{'item'};
    }
     }      }
 EVALBLOCK  EVALBLOCK
         if ($@) {          if ($@) {
Line 1047  sub currentversion { Line 1072  sub currentversion {
 sub subscribe {  sub subscribe {
     my $fname=shift;      my $fname=shift;
     if ($fname=~/\/(aboutme|syllabus|bulletinboard|smppg)$/) { return ''; }      if ($fname=~/\/(aboutme|syllabus|bulletinboard|smppg)$/) { return ''; }
       $fname=~s/[\n\r]//g;
     my $author=$fname;      my $author=$fname;
     $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;      $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
     my ($udom,$uname)=split(/\//,$author);      my ($udom,$uname)=split(/\//,$author);
Line 1067  sub repcopy { Line 1093  sub repcopy {
     my $filename=shift;      my $filename=shift;
     $filename=~s/\/+/\//g;      $filename=~s/\/+/\//g;
     if ($filename=~/^\/home\/httpd\/html\/adm\//) { return OK; }      if ($filename=~/^\/home\/httpd\/html\/adm\//) { return OK; }
       $filename=~s/[\n\r]//g;
     my $transname="$filename.in.transfer";      my $transname="$filename.in.transfer";
     if ((-e $filename) || (-e $transname)) { return OK; }      if ((-e $filename) || (-e $transname)) { return OK; }
     my $remoteurl=subscribe($filename);      my $remoteurl=subscribe($filename);
Line 3994  sub EXT { Line 4021  sub EXT {
   
  my $section;   my $section;
  if (defined($courseid) && $courseid eq $ENV{'request.course.id'}) {   if (defined($courseid) && $courseid eq $ENV{'request.course.id'}) {
       if (!$symbparm) { $symbparm=&symbread(); }
    }
    if ($symbparm && defined($courseid) && 
       $courseid eq $ENV{'request.course.id'}) {
   
     #print '<br>'.$space.' - '.$qualifier.' - '.$spacequalifierrest;      #print '<br>'.$space.' - '.$qualifier.' - '.$spacequalifierrest;
   
 # ----------------------------------------------------- Cascading lookup scheme  # ----------------------------------------------------- Cascading lookup scheme
     if (!$symbparm) { $symbparm=&symbread(); }  
     my $symbp=$symbparm;      my $symbp=$symbparm;
     my $mapp=(&decode_symb($symbp))[0];      my $mapp=(&decode_symb($symbp))[0];
   
Line 4009  sub EXT { Line 4039  sub EXT {
  ($ENV{'user.domain'} eq $udom)) {   ($ENV{'user.domain'} eq $udom)) {
  $section=$ENV{'request.course.sec'};   $section=$ENV{'request.course.sec'};
     } else {      } else {
                 if (! defined($usection)) {   if (! defined($usection)) {
                     $section=&usection($udom,$uname,$courseid);      $section=&usection($udom,$uname,$courseid);
                 } else {   } else {
                     $section = $usection;      $section = $usection;
                 }   }
     }      }
   
     my $seclevel=$courseid.'.['.$section.'].'.$spacequalifierrest;      my $seclevel=$courseid.'.['.$section.'].'.$spacequalifierrest;
Line 4051  sub EXT { Line 4081  sub EXT {
  $uname." at ".$udom.": ".   $uname." at ".$udom.": ".
  $tmp."</font>");   $tmp."</font>");
     } elsif ($tmp=~/error: 2 /) {      } elsif ($tmp=~/error: 2 /) {
                         &EXT_cache_set($udom,$uname);   &EXT_cache_set($udom,$uname);
     } elsif ($tmp =~ /^(con_lost|no_such_host)/) {      } elsif ($tmp =~ /^(con_lost|no_such_host)/) {
  return $tmp;   return $tmp;
     }      }
Line 4061  sub EXT { Line 4091  sub EXT {
 # -------------------------------------------------------- second, check course  # -------------------------------------------------------- second, check course
   
     my $coursereply=&courseresdata($ENV{'course.'.$courseid.'.num'},      my $coursereply=&courseresdata($ENV{'course.'.$courseid.'.num'},
   $ENV{'course.'.$courseid.'.domain'},     $ENV{'course.'.$courseid.'.domain'},
   ($seclevelr,$seclevelm,$seclevel,     ($seclevelr,$seclevelm,$seclevel,
    $courselevelr,$courselevelm,      $courselevelr,$courselevelm,
    $courselevel));      $courselevel));
     if (defined($coursereply)) { return $coursereply; }      if (defined($coursereply)) { return $coursereply; }
   
 # ------------------------------------------------------ third, check map parms  # ------------------------------------------------------ third, check map parms
Line 4562  sub deversion { Line 4592  sub deversion {
   
 sub symbread {  sub symbread {
     my ($thisfn,$donotrecurse)=@_;      my ($thisfn,$donotrecurse)=@_;
       my $cache_str='request.symbread.cached.'.$thisfn;
       if (defined($ENV{$cache_str})) { return $ENV{$cache_str}; }
 # no filename provided? try from environment  # no filename provided? try from environment
     unless ($thisfn) {      unless ($thisfn) {
         if ($ENV{'request.symb'}) { return &symbclean($ENV{'request.symb'}); }          if ($ENV{'request.symb'}) {
       return $ENV{$cache_str}=&symbclean($ENV{'request.symb'});
    }
  $thisfn=$ENV{'request.filename'};   $thisfn=$ENV{'request.filename'};
     }      }
 # is that filename actually a symb? Verify, clean, and return  # is that filename actually a symb? Verify, clean, and return
     if ($thisfn=~/\_\_\_\d+\_\_\_(.*)$/) {      if ($thisfn=~/\_\_\_\d+\_\_\_(.*)$/) {
  if (&symbverify($thisfn,$1)) { return &symbclean($thisfn); }   if (&symbverify($thisfn,$1)) {
       return $ENV{$cache_str}=&symbclean($thisfn);
    }
     }      }
     $thisfn=declutter($thisfn);      $thisfn=declutter($thisfn);
     my %hash;      my %hash;
Line 4590  sub symbread { Line 4626  sub symbread {
            unless ($syval=~/\_\d+$/) {             unless ($syval=~/\_\d+$/) {
        unless ($ENV{'form.request.prefix'}=~/\.(\d+)\_$/) {         unless ($ENV{'form.request.prefix'}=~/\.(\d+)\_$/) {
                   &appenv('request.ambiguous' => $thisfn);                    &appenv('request.ambiguous' => $thisfn);
                   return '';    return $ENV{$cache_str}='';
                }                     }    
                $syval.=$1;                 $syval.=$1;
    }     }
Line 4637  sub symbread { Line 4673  sub symbread {
            }             }
         }          }
         if ($syval) {          if ($syval) {
            return &symbclean($syval.'___'.$thisfn);       return $ENV{$cache_str}=&symbclean($syval.'___'.$thisfn);
         }          }
     }      }
     &appenv('request.ambiguous' => $thisfn);      &appenv('request.ambiguous' => $thisfn);
     return '';      return $ENV{$cache_str}='';
 }  }
   
 # ---------------------------------------------------------- Return random seed  # ---------------------------------------------------------- Return random seed
Removed from v.1.523  
changed lines
  Added in v.1.523.2.4

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