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Diff for /loncom/lonsql between versions 1.5 and 1.33

version 1.5, 2001/03/14 14:19:44 version 1.33, 2001/04/16 18:36:22
Line 1 Line 1
 #!/usr/bin/perl  #!/usr/bin/perl
 # lonsql-based on the preforker:harsha jagasia:date:5/10/00  # lonsql-based on the preforker:harsha jagasia:date:5/10/00
 # 7/25 Gerd Kortemeyer  # 7/25 Gerd Kortemeyer
   # many different dates Scott Harrison
   # 03/22/2001 Scott Harrison
 use IO::Socket;  use IO::Socket;
 use Symbol;  use Symbol;
 use POSIX;  use POSIX;
Line 12  use Fcntl; Line 13  use Fcntl;
 use Tie::RefHash;  use Tie::RefHash;
 use DBI;  use DBI;
   
   my @metalist;
   # ----------------- Code to enable 'find' subroutine listing of the .meta files
   require "find.pl";
   sub wanted {
       (($dev,$ino,$mode,$nlink,$uid,$gid) = lstat($_)) &&
       -f _ &&
       /^.*\.meta$/ &&
       push(@metalist,"$dir/$_");
   }
   
 $childmaxattempts=10;  $childmaxattempts=10;
 $run =0;#running counter to generate the query-id  $run =0;#running counter to generate the query-id
Line 28  while ($configline=<CONFIG>) { Line 38  while ($configline=<CONFIG>) {
 }  }
 close(CONFIG);  close(CONFIG);
   
   # ------------------------------------- Make sure that database can be accessed
   {
       my $dbh;
       unless (
       $dbh = DBI->connect("DBI:mysql:loncapa","www",$perlvar{'lonSqlAccess'},{ RaiseError =>0,PrintError=>0})
       ) { 
    print "Cannot connect to database!\n";
    exit;
       }
       else {
    $dbh->disconnect;
       }
   }
   
 # --------------------------------------------- Check if other instance running  # --------------------------------------------- Check if other instance running
   
 my $pidfile="$perlvar{'lonDaemons'}/logs/lonsql.pid";  my $pidfile="$perlvar{'lonDaemons'}/logs/lonsql.pid";
Line 49  while ($configline=<CONFIG>) { Line 73  while ($configline=<CONFIG>) {
     chomp($ip);      chomp($ip);
   
     $hostip{$ip}=$id;      $hostip{$ip}=$id;
   
     if ($id eq $perlvar{'lonHostID'}) { $thisserver=$name; }      if ($id eq $perlvar{'lonHostID'}) { $thisserver=$name; }
   
     $PREFORK++;      $PREFORK++;
Line 180  sub make_new_child { Line 203  sub make_new_child {
         #open database handle          #open database handle
  # making dbh global to avoid garbage collector   # making dbh global to avoid garbage collector
  unless (   unless (
  $dbh = DBI->connect("DBI:mysql:loncapa","www","123",{ RaiseError =>0,PrintError=>0})   $dbh = DBI->connect("DBI:mysql:loncapa","www",$perlvar{'lonSqlAccess'},{ RaiseError =>0,PrintError=>0})
  ) {    ) { 
             my $st=120+int(rand(240));               sleep(10+int(rand(20)));
     &logthis("<font color=blue>WARNING: Couldn't connect to database  ($st secs): $@</font>");      &logthis("<font color=blue>WARNING: Couldn't connect to database  ($st secs): $@</font>");
     print "database handle error\n";      print "database handle error\n";
     sleep($st);  
     exit;      exit;
   
   };    };
Line 201  sub make_new_child { Line 223  sub make_new_child {
     my $userinput = <$client>;      my $userinput = <$client>;
     chomp($userinput);      chomp($userinput);
                   
     my ($conserver,$querytmp)=split(/&/,$userinput);      my ($conserver,$querytmp,
    $customtmp,$customshowtmp)=split(/&/,$userinput);
     my $query=unescape($querytmp);      my $query=unescape($querytmp);
       my $custom=unescape($customtmp);
       my $customshow=unescape($customshowtmp);
   
             #send query id which is pid_unixdatetime_runningcounter              #send query id which is pid_unixdatetime_runningcounter
     $queryid = $thisserver;      $queryid = $thisserver;
Line 211  sub make_new_child { Line 236  sub make_new_child {
     $queryid .= $run;      $queryid .= $run;
     print $client "$queryid\n";      print $client "$queryid\n";
           
       &logthis("QUERY: $query");
       &logthis("QUERY: $query");
       sleep 1;
             #prepare and execute the query              #prepare and execute the query
     my $sth = $dbh->prepare($query);      my $sth = $dbh->prepare($query);
     my $result;      my $result;
     unless ($sth->execute())      my @files;
     {      my $subsetflag=0;
  &logthis("<font color=blue>WARNING: Could not retrieve from database: $@</font>");      if ($query) {
  $result="";   unless ($sth->execute())
    {
       &logthis("<font color=blue>WARNING: Could not retrieve from database: $@</font>");
       $result="";
    }
    else {
       my $r1=$sth->fetchall_arrayref;
       my @r2;
       map {my $a=$_; 
    my @b=map {escape($_)} @$a;
    push @files,@{$a}[3];
    push @r2,join(",", @b)
    } (@$r1);
       $result=join("&",@r2);
    }
     }      }
     else {      # do custom metadata searching here and build into result
  my $r1=$sth->fetchall_arrayref;      if ($custom or $customshow) {
  my @r2; map {my $a=$_; my @b=map {escape($_)} @$a; push @r2,join(",", @b)} (@$r1);   &logthis("am going to do custom query for $custom");
  $result=join("&",@r2) . "\n";   if ($query) {
       @metalist=map {$perlvar{'lonDocRoot'}.$_.'.meta'} @files;
    }
    else {
       @metalist=(); pop @metalist;
       &find("$perlvar{'lonDocRoot'}/res");
    }
   # &logthis("FILELIST:" . join(":::",@metalist));
    # if file is indicated in sql database and
    # not part of sql-relevant query, do not pattern match.
    # if file is not in sql database, output error.
    # if file is indicated in sql database and is
    # part of query result list, then do the pattern match.
    my $customresult='';
    my @r2;
    foreach my $m (@metalist) {
       my $fh=IO::File->new($m);
       my @lines=<$fh>;
       my $stuff=join('',@lines);
       if ($stuff=~/$custom/s) {
    foreach my $f ('abstract','author','copyright',
          'creationdate','keywords','language',
          'lastrevisiondate','mime','notes',
          'owner','subject','title') {
       $stuff=~s/\n?\<$f[^\>]*\>.*?<\/$f[^\>]*\>\n?//;
    }
    my $m2=$m; my $docroot=$perlvar{'lonDocRoot'};
    $m2=~s/^$docroot//;
    $m2=~s/\.meta$//;
    unless ($query) {
       my $q2="select * from metadata where url like '$m2'";
       my $sth = $dbh->prepare($q2);
       $sth->execute();
       my $r1=$sth->fetchall_arrayref;
       map {my $a=$_; 
    my @b=map {escape($_)} @$a;
    push @files,@{$a}[3];
    push @r2,join(",", @b)
    } (@$r1);
    }
   # &logthis("found: $stuff");
    $customresult.='&custom='.escape($m2).','.escape($stuff);
       }
    }
    $result=join("&",@r2) unless $query;
    $result.=$customresult;
     }      }
       # reply with result
       $result.="\n" if $result;
             &reply("queryreply:$queryid:$result",$conserver);              &reply("queryreply:$queryid:$result",$conserver);
   
         }          }
Line 274  sub reply { Line 363  sub reply {
     }      }
   } else {    } else {
     $answer='self_reply';      $answer='self_reply';
       $answer=subreply($cmd,$server);
   }     } 
   return $answer;    return $answer;
 }  }
Removed from v.1.5  
changed lines
  Added in v.1.33

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