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Diff for /loncom/lonnet/perl/lonnet.pm between versions 1.587.2.3 and 1.587.2.3.2.7

version 1.587.2.3, 2005/01/28 09:26:28 version 1.587.2.3.2.7, 2005/02/14 03:11:07
Line 36  use HTTP::Date; Line 36  use HTTP::Date;
 # use Date::Parse;  # use Date::Parse;
 use vars   use vars 
 qw(%perlvar %hostname %homecache %badServerCache %hostip %iphost %spareid %hostdom   qw(%perlvar %hostname %homecache %badServerCache %hostip %iphost %spareid %hostdom 
    %libserv %pr %prp %metacache %packagetab %titlecache %courseresversioncache %resversioncache     %libserv %pr %prp $memcache %packagetab 
    %courselogs %accesshash %userrolehash $processmarker $dumpcount      %courselogs %accesshash %userrolehash $processmarker $dumpcount 
    %coursedombuf %coursenumbuf %coursehombuf %coursedescrbuf %courseinstcodebuf %courseownerbuf %courseresdatacache      %coursedombuf %coursenumbuf %coursehombuf %coursedescrbuf %courseinstcodebuf %courseownerbuf %courseresdatacache 
    %userresdatacache %getsectioncache %domaindescription %domain_auth_def %domain_auth_arg_def      %userresdatacache %getsectioncache %domaindescription %domain_auth_def %domain_auth_arg_def 
Line 50  use Fcntl qw(:flock); Line 50  use Fcntl qw(:flock);
 use Apache::lonlocal;  use Apache::lonlocal;
 use Storable qw(lock_store lock_nstore lock_retrieve freeze thaw nfreeze);  use Storable qw(lock_store lock_nstore lock_retrieve freeze thaw nfreeze);
 use Time::HiRes qw( gettimeofday tv_interval );  use Time::HiRes qw( gettimeofday tv_interval );
   use Cache::Memcached;
 my $readit;  my $readit;
 my $max_connection_retries = 10;     # Or some such value.  my $max_connection_retries = 10;     # Or some such value.
   
Line 923  sub save_cache_item { Line 924  sub save_cache_item {
 }  }
   
 sub save_cache {  sub save_cache {
       &purge_remembered();
     if ($disk_caching_disabled) { return; }      if ($disk_caching_disabled) { return; }
     my ($cache,$name,$id);      my ($cache,$name,$id);
     foreach $name (keys(%do_save)) {      foreach $name (keys(%do_save)) {
Line 1020  EVALBLOCK Line 1022  EVALBLOCK
 #    &logthis("load_cache_item $name took ".(&Time::HiRes::time()-$starttime));  #    &logthis("load_cache_item $name took ".(&Time::HiRes::time()-$starttime));
 }  }
   
   my $to_remember=10;
   my %remembered;
   my %accessed;
   my $kicks=0;
   my $hits=0;
   sub devalidate_cache_new {
       my ($name,$id,$debug) = @_;
       if ($debug) { &Apache::lonnet::logthis("deleting $name:$id"); }
       $id=&escape($name.':'.$id);
       $memcache->delete($id);
       delete($remembered{$id});
       delete($accessed{$id});
   }
   
   sub is_cached_new {
       my ($name,$id,$debug) = @_;
       $id=&escape($name.':'.$id);
       if (exists($remembered{$id})) {
    if ($debug) { &Apache::lonnet::logthis("Earyl return $id of $remembered{$id} "); }
    $accessed{$id}=[&gettimeofday()];
    $hits++;
    return ($remembered{$id},1);
       }
       my $value = $memcache->get($id);
       if (!(defined($value))) {
    if ($debug) { &Apache::lonnet::logthis("getting $id is not defined"); }
    return (undef,undef);
       }
       &make_room($id,$value,$debug);
       if ($value eq '__undef__') {
    if ($debug) { &Apache::lonnet::logthis("getting $id is __undef__"); }
    return (undef,1);
       }
       if ($debug) { &Apache::lonnet::logthis("getting $id is $value"); }
       return ($value,1);
   }
   
   sub do_cache_new {
       my ($name,$id,$value,$time,$debug) = @_;
       $id=&escape($name.':'.$id);
       my $setvalue=$value;
       if (!defined($setvalue)) {
    $setvalue='__undef__';
       }
       if ($debug) { &Apache::lonnet::logthis("Setting $id to $value"); }
       $memcache->set($id,$setvalue,300);
       &make_room($id,$value,$debug);
       return $value;
   }
   
   sub make_room {
       my ($id,$value,$debug)=@_;
       $remembered{$id}=$value;
       $accessed{$id}=[&gettimeofday()];
       if (scalar(keys(%remembered)) <= $to_remember) { return; }
       my $to_kick;
       my $max_time=0;
       foreach my $other (keys(%accessed)) {
    if (&tv_interval($accessed{$other}) > $max_time) {
       $to_kick=$other;
       $max_time=&tv_interval($accessed{$other});
    }
       }
       delete($remembered{$to_kick});
       delete($accessed{$to_kick});
       $kicks++;
       if ($debug) { &logthis("kicking $max_time $kicks\n"); }
       return;
   }
   
   sub purge_remembered {
       &logthis("Tossing ".scalar(keys(%remembered)));
       undef(%remembered);
       undef(%accessed);
   }
 # ------------------------------------- Read an entry from a user's environment  # ------------------------------------- Read an entry from a user's environment
   
 sub userenvironment {  sub userenvironment {
Line 1057  sub getversion { Line 1134  sub getversion {
   
 sub currentversion {  sub currentversion {
     my $fname=shift;      my $fname=shift;
     my ($result,$cached)=&is_cached(\%resversioncache,$fname,'resversion',600);      my ($result,$cached)=&is_cached_new('resversion',$fname);
     if (defined($cached)) { return $result; }      if (defined($cached)) { return $result; }
     my $author=$fname;      my $author=$fname;
     $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;      $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
Line 1070  sub currentversion { Line 1147  sub currentversion {
     if (($answer eq 'con_lost') || ($answer eq 'rejected')) {      if (($answer eq 'con_lost') || ($answer eq 'rejected')) {
  return -1;   return -1;
     }      }
     return &do_cache(\%resversioncache,$fname,$answer,'resversion');      return &do_cache_new('resversion',$fname,$answer,600);
 }  }
   
 # ----------------------------- Subscribe to a resource, return URL if possible  # ----------------------------- Subscribe to a resource, return URL if possible
Line 4464  sub add_prefix_and_part { Line 4541  sub add_prefix_and_part {
   
 # ---------------------------------------------------------------- Get metadata  # ---------------------------------------------------------------- Get metadata
   
   my %metaentry;
 sub metadata {  sub metadata {
     my ($uri,$what,$liburi,$prefix,$depthcount)=@_;      my ($uri,$what,$liburi,$prefix,$depthcount)=@_;
     $uri=&declutter($uri);      $uri=&declutter($uri);
Line 4483  sub metadata { Line 4561  sub metadata {
 # Everything is cached by the main uri, libraries are never directly cached  # Everything is cached by the main uri, libraries are never directly cached
 #  #
     if (!defined($liburi)) {      if (!defined($liburi)) {
  my ($result,$cached)=&is_cached(\%metacache,$uri,'meta');   my ($result,$cached)=&is_cached_new('meta',$uri);
  if (defined($cached)) { return $result->{':'.$what}; }   if (defined($cached)) { return $result->{':'.$what}; }
     }      }
     {      {
 #  #
 # Is this a recursive call for a library?  # Is this a recursive call for a library?
 #  #
  if (! exists($metacache{$uri})) {  # if (! exists($metacache{$uri})) {
     $metacache{$uri}={};  #    $metacache{$uri}={};
  }  # }
         if ($liburi) {          if ($liburi) {
     $liburi=&declutter($liburi);      $liburi=&declutter($liburi);
             $filename=$liburi;              $filename=$liburi;
         } else {          } else {
     &devalidate_cache(\%metacache,$uri,'meta');      &devalidate_cache_new('meta',$uri);
       undef(%metaentry);
  }   }
         my %metathesekeys=();          my %metathesekeys=();
         unless ($filename=~/\.meta$/) { $filename.='.meta'; }          unless ($filename=~/\.meta$/) { $filename.='.meta'; }
  my $metastring;   my $metastring;
  if ($uri !~ m|^uploaded/|) {   if ($uri !~ m|^uploaded/|) {
     my $file=&filelocation('',&clutter($filename));      my $file=&filelocation('',&clutter($filename));
     push(@{$metacache{$uri.'.file'}},$file);      #push(@{$metaentry{$uri.'.file'}},$file);
     $metastring=&getfile($file);      $metastring=&getfile($file);
  }   }
         my $parser=HTML::LCParser->new(\$metastring);          my $parser=HTML::LCParser->new(\$metastring);
Line 4521  sub metadata { Line 4600  sub metadata {
     if (defined($token->[2]->{'id'})) {       if (defined($token->[2]->{'id'})) { 
  $keyroot.='_'.$token->[2]->{'id'};    $keyroot.='_'.$token->[2]->{'id'}; 
     }      }
     if ($metacache{$uri}->{':packages'}) {      if ($metaentry{':packages'}) {
  $metacache{$uri}->{':packages'}.=','.$package.$keyroot;   $metaentry{':packages'}.=','.$package.$keyroot;
     } else {      } else {
  $metacache{$uri}->{':packages'}=$package.$keyroot;   $metaentry{':packages'}=$package.$keyroot;
     }      }
     foreach (keys %packagetab) {      foreach (keys %packagetab) {
  my $part=$keyroot;   my $part=$keyroot;
Line 4546  sub metadata { Line 4625  sub metadata {
     if ($subp eq 'display') {      if ($subp eq 'display') {
  $value.=' [Part: '.$part.']';   $value.=' [Part: '.$part.']';
     }      }
     $metacache{$uri}->{':'.$unikey.'.part'}=$part;      $metaentry{':'.$unikey.'.part'}=$part;
     $metathesekeys{$unikey}=1;      $metathesekeys{$unikey}=1;
     unless (defined($metacache{$uri}->{':'.$unikey.'.'.$subp})) {      unless (defined($metaentry{':'.$unikey.'.'.$subp})) {
  $metacache{$uri}->{':'.$unikey.'.'.$subp}=$value;   $metaentry{':'.$unikey.'.'.$subp}=$value;
     }      }
     if (defined($metacache{$uri}->{':'.$unikey.'.default'})) {      if (defined($metaentry{':'.$unikey.'.default'})) {
  $metacache{$uri}->{':'.$unikey}=   $metaentry{':'.$unikey}=
     $metacache{$uri}->{':'.$unikey.'.default'};      $metaentry{':'.$unikey.'.default'};
     }      }
  }   }
     }      }
Line 4586  sub metadata { Line 4665  sub metadata {
     foreach (sort(split(/\,/,&metadata($uri,'keys',      foreach (sort(split(/\,/,&metadata($uri,'keys',
        $location,$unikey,         $location,$unikey,
        $depthcount+1)))) {         $depthcount+1)))) {
  $metacache{$uri}->{':'.$_}=$metacache{$uri}->{':'.$_};   $metaentry{':'.$_}=$metaentry{':'.$_};
  $metathesekeys{$_}=1;   $metathesekeys{$_}=1;
     }      }
  }   }
Line 4597  sub metadata { Line 4676  sub metadata {
  }   }
  $metathesekeys{$unikey}=1;   $metathesekeys{$unikey}=1;
  foreach (@{$token->[3]}) {   foreach (@{$token->[3]}) {
     $metacache{$uri}->{':'.$unikey.'.'.$_}=$token->[2]->{$_};      $metaentry{':'.$unikey.'.'.$_}=$token->[2]->{$_};
  }   }
  my $internaltext=&HTML::Entities::decode($parser->get_text('/'.$entry));   my $internaltext=&HTML::Entities::decode($parser->get_text('/'.$entry));
  my $default=$metacache{$uri}->{':'.$unikey.'.default'};   my $default=$metaentry{':'.$unikey.'.default'};
  if ( $internaltext =~ /^\s*$/ && $default !~ /^\s*$/) {   if ( $internaltext =~ /^\s*$/ && $default !~ /^\s*$/) {
  # only ws inside the tag, and not in default, so use default   # only ws inside the tag, and not in default, so use default
  # as value   # as value
     $metacache{$uri}->{':'.$unikey}=$default;      $metaentry{':'.$unikey}=$default;
  } else {   } else {
   # either something interesting inside the tag or default    # either something interesting inside the tag or default
                   # uninteresting                    # uninteresting
     $metacache{$uri}->{':'.$unikey}=$internaltext;      $metaentry{':'.$unikey}=$internaltext;
  }   }
 # end of not-a-package not-a-library import  # end of not-a-package not-a-library import
     }      }
Line 4625  sub metadata { Line 4704  sub metadata {
     &metadata_create_package_def($uri,$key,'extension_'.$extension,      &metadata_create_package_def($uri,$key,'extension_'.$extension,
  \%metathesekeys);   \%metathesekeys);
  }   }
  if (!exists($metacache{$uri}->{':packages'})) {   if (!exists($metaentry{':packages'})) {
     foreach my $key (sort(keys(%packagetab))) {      foreach my $key (sort(keys(%packagetab))) {
  #no specific packages well let's get default then   #no specific packages well let's get default then
  if ($key!~/^default&/) { next; }   if ($key!~/^default&/) { next; }
Line 4634  sub metadata { Line 4713  sub metadata {
     }      }
  }   }
 # are there custom rights to evaluate  # are there custom rights to evaluate
  if ($metacache{$uri}->{':copyright'} eq 'custom') {   if ($metaentry{':copyright'} eq 'custom') {
   
     #      #
     # Importing a rights file here      # Importing a rights file here
     #      #
     unless ($depthcount) {      unless ($depthcount) {
  my $location=$metacache{$uri}->{':customdistributionfile'};   my $location=$metaentry{':customdistributionfile'};
  my $dir=$filename;   my $dir=$filename;
  $dir=~s|[^/]*$||;   $dir=~s|[^/]*$||;
  $location=&filelocation($dir,$location);   $location=&filelocation($dir,$location);
  foreach (sort(split(/\,/,&metadata($uri,'keys',   foreach (sort(split(/\,/,&metadata($uri,'keys',
    $location,'_rights',     $location,'_rights',
    $depthcount+1)))) {     $depthcount+1)))) {
     $metacache{$uri}->{':'.$_}=$metacache{$uri}->{':'.$_};      #$metaentry{':'.$_}=$metacache{$uri}->{':'.$_};
     $metathesekeys{$_}=1;      $metathesekeys{$_}=1;
  }   }
     }      }
  }   }
  $metacache{$uri}->{':keys'}=join(',',keys %metathesekeys);   $metaentry{':keys'}=join(',',keys %metathesekeys);
  &metadata_generate_part0(\%metathesekeys,$metacache{$uri},$uri);   &metadata_generate_part0(\%metathesekeys,\%metaentry,$uri);
  $metacache{$uri}->{':allpossiblekeys'}=join(',',keys %metathesekeys);   $metaentry{':allpossiblekeys'}=join(',',keys %metathesekeys);
  &do_cache(\%metacache,$uri,$metacache{$uri},'meta');   &do_cache_new('meta',$uri,\%metaentry);
 # this is the end of "was not already recently cached  # this is the end of "was not already recently cached
     }      }
     return $metacache{$uri}->{':'.$what};      return $metaentry{':'.$what};
 }  }
   
 sub metadata_create_package_def {  sub metadata_create_package_def {
Line 4666  sub metadata_create_package_def { Line 4745  sub metadata_create_package_def {
     my ($pack,$name,$subp)=split(/\&/,$key);      my ($pack,$name,$subp)=split(/\&/,$key);
     if ($subp eq 'default') { next; }      if ($subp eq 'default') { next; }
           
     if (defined($metacache{$uri}->{':packages'})) {      if (defined($metaentry{':packages'})) {
  $metacache{$uri}->{':packages'}.=','.$package;   $metaentry{':packages'}.=','.$package;
     } else {      } else {
  $metacache{$uri}->{':packages'}=$package;   $metaentry{':packages'}=$package;
     }      }
     my $value=$packagetab{$key};      my $value=$packagetab{$key};
     my $unikey;      my $unikey;
     $unikey='parameter_0_'.$name;      $unikey='parameter_0_'.$name;
     $metacache{$uri}->{':'.$unikey.'.part'}=0;      $metaentry{':'.$unikey.'.part'}=0;
     $$metathesekeys{$unikey}=1;      $$metathesekeys{$unikey}=1;
     unless (defined($metacache{$uri}->{':'.$unikey.'.'.$subp})) {      unless (defined($metaentry{':'.$unikey.'.'.$subp})) {
  $metacache{$uri}->{':'.$unikey.'.'.$subp}=$value;   $metaentry{':'.$unikey.'.'.$subp}=$value;
     }      }
     if (defined($metacache{$uri}->{':'.$unikey.'.default'})) {      if (defined($metaentry{':'.$unikey.'.default'})) {
  $metacache{$uri}->{':'.$unikey}=   $metaentry{':'.$unikey}=
     $metacache{$uri}->{':'.$unikey.'.default'};      $metaentry{':'.$unikey.'.default'};
     }      }
 }  }
   
Line 4719  sub gettitle { Line 4798  sub gettitle {
     my $urlsymb=shift;      my $urlsymb=shift;
     my $symb=&symbread($urlsymb);      my $symb=&symbread($urlsymb);
     if ($symb) {      if ($symb) {
  my ($result,$cached)=&is_cached(\%titlecache,$symb,'title',600);   my $key=$ENV{'request.course.id'}."\0".$symb;
    my ($result,$cached)=&is_cached_new('title',$key);
  if (defined($cached)) {    if (defined($cached)) { 
     return $result;      return $result;
  }   }
Line 4734  sub gettitle { Line 4814  sub gettitle {
  }   }
  $title=~s/\&colon\;/\:/gs;   $title=~s/\&colon\;/\:/gs;
  if ($title) {   if ($title) {
     return &do_cache(\%titlecache,$symb,$title,'title');      return &do_cache_new('title',$key,$title,600);
  }   }
  $urlsymb=$url;   $urlsymb=$url;
     }      }
Line 4848  sub fixversion { Line 4928  sub fixversion {
     my $uri=&clutter($fn);      my $uri=&clutter($fn);
     my $key=$ENV{'request.course.id'}.'_'.$uri;      my $key=$ENV{'request.course.id'}.'_'.$uri;
 # is this cached?  # is this cached?
     my ($result,$cached)=&is_cached(\%courseresversioncache,$key,      my ($result,$cached)=&is_cached_new('courseresversion',$key);
     'courseresversion',600);  
     if (defined($cached)) { return $result; }      if (defined($cached)) { return $result; }
 # unfortunately not cached, or expired  # unfortunately not cached, or expired
     if (tie(%bighash,'GDBM_File',$ENV{'request.course.fn'}.'.db',      if (tie(%bighash,'GDBM_File',$ENV{'request.course.fn'}.'.db',
Line 4863  sub fixversion { Line 4942  sub fixversion {
   }    }
   untie %bighash;    untie %bighash;
     }      }
     return &do_cache      return &do_cache_new('courseresversion',$key,&declutter($uri),600);
  (\%courseresversioncache,$key,&declutter($uri),'courseresversion');  
 }  }
   
 sub deversion {  sub deversion {
Line 5573  sub correct_line_ends { Line 5651  sub correct_line_ends {
 sub goodbye {  sub goodbye {
    &logthis("Starting Shut down");     &logthis("Starting Shut down");
 #not converted to using infrastruture and probably shouldn't be  #not converted to using infrastruture and probably shouldn't be
    &logthis(sprintf("%-20s is %s",'%badServerCache',scalar(%badServerCache)));     &logthis(sprintf("%-20s is %s",'%badServerCache',length(&freeze(\%badServerCache))));
 #converted  #converted
    &logthis(sprintf("%-20s is %s",'%metacache',scalar(%metacache)));  #   &logthis(sprintf("%-20s is %s",'%metacache',scalar(%metacache)));
    &logthis(sprintf("%-20s is %s",'%homecache',scalar(%homecache)));     &logthis(sprintf("%-20s is %s",'%homecache',length(&freeze(\%homecache))));
    &logthis(sprintf("%-20s is %s",'%titlecache',scalar(%titlecache)));  #   &logthis(sprintf("%-20s is %s",'%titlecache',length(&freeze(\%titlecache))));
    &logthis(sprintf("%-20s is %s",'%courseresdatacache',scalar(%courseresdatacache)));     &logthis(sprintf("%-20s is %s",'%courseresdatacache',length(&freeze(\%courseresdatacache))));
 #1.1 only  #1.1 only
    &logthis(sprintf("%-20s is %s",'%userresdatacache',scalar(%userresdatacache)));     &logthis(sprintf("%-20s is %s",'%userresdatacache',length(&freeze(\%userresdatacache))));
    &logthis(sprintf("%-20s is %s",'%getsectioncache',scalar(%getsectioncache)));     &logthis(sprintf("%-20s is %s",'%getsectioncache',length(&freeze(\%getsectioncache))));
    &logthis(sprintf("%-20s is %s",'%courseresversioncache',scalar(%courseresversioncache)));  #   &logthis(sprintf("%-20s is %s",'%courseresversioncache',length(&freeze(\%courseresversioncache))));
    &logthis(sprintf("%-20s is %s",'%resversioncache',scalar(%resversioncache)));  #   &logthis(sprintf("%-20s is %s",'%resversioncache',length(&freeze(\%resversioncache))));
      &logthis(sprintf("%-20s is %s",'%remembered',length(&freeze(\%remembered))));
      &logthis(sprintf("%-20s is %s",'kicks',$kicks));
      &logthis(sprintf("%-20s is %s",'hits',$hits));
    &flushcourselogs();     &flushcourselogs();
    &logthis("Shutting down");     &logthis("Shutting down");
    return DONE;     return DONE;
Line 5729  BEGIN { Line 5810  BEGIN {
   
 }  }
   
 %metacache=();  $memcache=new Cache::Memcached({'servers'=>['127.0.0.1:11211']});
   
 $processmarker='_'.time.'_'.$perlvar{'lonHostID'};  $processmarker='_'.time.'_'.$perlvar{'lonHostID'};
 $dumpcount=0;  $dumpcount=0;
Removed from v.1.587.2.3  
changed lines
  Added in v.1.587.2.3.2.7

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