--- loncom/metadata_database/searchcat.pl 2002/10/08 18:45:33 1.23 +++ loncom/metadata_database/searchcat.pl 2003/06/25 14:42:00 1.35 @@ -2,7 +2,7 @@ # The LearningOnline Network # searchcat.pl "Search Catalog" batch script # -# $Id: searchcat.pl,v 1.23 2002/10/08 18:45:33 albertel Exp $ +# $Id: searchcat.pl,v 1.35 2003/06/25 14:42:00 www Exp $ # # Copyright Michigan State University Board of Trustees # @@ -26,17 +26,44 @@ # # http://www.lon-capa.org/ # -# YEAR=2001 -# 04/14/2001, 04/16/2001 Scott Harrison -# -# YEAR=2002 -# 05/11/2002 Scott Harrison -# ### -# This script goes through a LON-CAPA resource -# directory and gathers metadata. -# The metadata is entered into a SQL database. +=pod + +=head1 NAME + +B - put authoritative filesystem data into sql database. + +=head1 SYNOPSIS + +Ordinarily this script is to be called from a loncapa cron job +(CVS source location: F; typical +filesystem installation location: F). + +Here is the cron job entry. + +C<# Repopulate and refresh the metadata database used for the search catalog.> +C<10 1 * * 7 www /home/httpd/perl/searchcat.pl> + +This script only allows itself to be run as the user C. + +=head1 DESCRIPTION + +This script goes through a loncapa resource directory and gathers metadata. +The metadata is entered into a SQL database. + +This script also does general database maintenance such as reformatting +the C table if it is deprecated. + +This script evaluates dynamic metadata from the authors' +F database file in order to store it in MySQL, as +well as to compress the filesize (add up all "count"-type metadata). + +This script is playing an increasingly important role for a loncapa +library server. The proper operation of this script is critical for a smooth +and correct user experience. + +=cut use lib '/home/httpd/lib/perl/'; use LONCAPA::Configuration; @@ -45,6 +72,7 @@ use IO::File; use HTML::TokeParser; use DBI; use GDBM_File; +use POSIX qw(strftime mktime); my @metalist; @@ -69,22 +97,16 @@ sub escape { # ------------------------------------------- Code to evaluate dynamic metadata sub dynamicmeta { -# -# -# Do nothing for now ... -# -# - return; -# -# ..., but stuff below already works -# + my $url=&declutter(shift); $url=~s/\.meta$//; my %returnhash=(); my ($adomain,$aauthor)=($url=~/^(\w+)\/(\w+)\//); my $prodir=&propath($adomain,$aauthor); - if (tie(%evaldata,'GDBM_File', - $prodir.'/nohist_resevaldata.db',&GDBM_WRCREAT(),0640)) { + if ((tie(%evaldata,'GDBM_File', + $prodir.'/nohist_resevaldata.db',&GDBM_READER(),0640)) && + (tie(%newevaldata,'GDBM_File', + $prodir.'/nohist_new_resevaldata.db',&GDBM_WRCREAT(),0640))) { my %sum=(); my %cnt=(); my %listitems=('count' => 'add', @@ -127,9 +149,9 @@ sub dynamicmeta { $sum{$ctype}=''.$evaldata{$_}; } } - if ($ctype eq 'count') { - delete($evaldata{$_}); - } + if ($ctype ne 'count') { + $newevaldata{$_}=$evaldata{$_}; + } } } foreach (keys %cnt) { @@ -143,9 +165,10 @@ sub dynamicmeta { } if ($returnhash{'count'}) { my $newkey=$$.'_'.time.'_searchcat___'.&escape($url).'___count'; - $evaldata{$newkey}=$returnhash{'count'}; + $newevaldata{$newkey}=$returnhash{'count'}; } untie(%evaldata); + untie(%newevaldata); } return %returnhash; } @@ -154,9 +177,9 @@ sub dynamicmeta { require "find.pl"; sub wanted { (($dev,$ino,$mode,$nlink,$uid,$gid) = lstat($_)) && - -f _ && - /^.*\.meta$/ && !/^.+\.\d+\.[^\.]+\.meta$/ && - push(@metalist,"$dir/$_"); + -f _ && + /^.*\.meta$/ && !/^.+\.\d+\.[^\.]+\.meta$/ && + push(@metalist,"$dir/$_"); } # --------------- Read loncapa_apache.conf and loncapa.conf and get variables @@ -168,13 +191,29 @@ delete $perlvar{'lonReceipt'}; # remove # ------------------------------------- Only run if machine is a library server exit unless $perlvar{'lonRole'} eq 'library'; +# ----------------------------- Make sure this process is running from user=www + +my $wwwid=getpwnam('www'); +if ($wwwid!=$<) { + $emailto="$perlvar{'lonAdmEMail'},$perlvar{'lonSysEMail'}"; + $subj="LON: $perlvar{'lonHostID'} User ID mismatch"; + system("echo 'User ID mismatch. searchcat.pl must be run as user www.' |\ + mailto $emailto -s '$subj' > /dev/null"); + exit 1; +} + + +# ---------------------------------------------------------- We are in business + +open(LOG,'>'.$perlvar{'lonDaemons'}.'/logs/searchcat.log'); +print LOG '==== Searchcat Run '.localtime()."====\n\n"; my $dbh; # ------------------------------------- Make sure that database can be accessed { unless ( $dbh = DBI->connect("DBI:mysql:loncapa","www",$perlvar{'lonSqlAccess'},{ RaiseError =>0,PrintError=>0}) ) { - print "Cannot connect to database!\n"; + print LOG "Cannot connect to database!\n"; exit; } my $make_metadata_table = "CREATE TABLE IF NOT EXISTS metadata (". @@ -194,54 +233,90 @@ my $dbh; # ------------------------------------------------------------- get .meta files opendir(RESOURCES,"$perlvar{'lonDocRoot'}/res/$perlvar{'lonDefDomain'}"); -my @homeusers=grep - {&ishome("$perlvar{'lonDocRoot'}/res/$perlvar{'lonDefDomain'}/$_")} - grep {!/^\.\.?$/} readdir(RESOURCES); +my @homeusers = grep { + &ishome("$perlvar{'lonDocRoot'}/res/$perlvar{'lonDefDomain'}/$_") + } grep {!/^\.\.?$/} readdir(RESOURCES); closedir RESOURCES; + +# +# Create the statement handlers we need +my $delete_sth = $dbh->prepare + ("DELETE FROM metadata WHERE url LIKE BINARY ?"); + +my $insert_sth = $dbh->prepare + ("INSERT INTO metadata VALUES (". + "?,". # title + "?,". # author + "?,". # subject + "?,". # m2??? + "?,". # version + "?,". # current + "?,". # notes + "?,". # abstract + "?,". # mime + "?,". # language + "?,". # creationdate + "?,". # revisiondate + "?,". # owner + "?)" # copyright + ); + foreach my $user (@homeusers) { + print LOG "\n=== User: ".$user."\n\n"; + # Remove left-over db-files from potentially crashed searchcat run + my $prodir=&propath($perlvar{'lonDefDomain'},$user); + unlink($prodir.'/nohist_new_resevaldata.db'); + # Use find.pl + undef @metalist; + @metalist=(); &find("$perlvar{'lonDocRoot'}/res/$perlvar{'lonDefDomain'}/$user"); -} - -# -- process each file to get metadata and put into search catalog SQL database -# Also, check to see if already there. -# I could just delete (without searching first), but this works for now. -foreach my $m (@metalist) { - my $ref=&metadata($m); - my $m2='/res/'.&declutter($m); - $m2=~s/\.meta$//; - &dynamicmeta($m2); - my $q2="select * from metadata where url like binary '$m2'"; - my $sth = $dbh->prepare($q2); - $sth->execute(); - my $r1=$sth->fetchall_arrayref; - if (@$r1) { - $sth=$dbh->prepare("delete from metadata where url like binary '$m2'"); - $sth->execute(); + # -- process each file to get metadata and put into search catalog SQL + # database. Also, check to see if already there. + # I could just delete (without searching first), but this works for now. + foreach my $m (@metalist) { + print LOG "- ".$m."\n"; + my $ref=&metadata($m); + my $m2='/res/'.&declutter($m); + $m2=~s/\.meta$//; + &dynamicmeta($m2); + $delete_sth->execute($m2); + $insert_sth->execute($ref->{'title'}, + $ref->{'author'}, + $ref->{'subject'}, + $m2, + $ref->{'keywords'}, + 'current', + $ref->{'notes'}, + $ref->{'abstract'}, + $ref->{'mime'}, + $ref->{'language'}, + sqltime($ref->{'creationdate'}), + sqltime($ref->{'lastrevisiondate'}), + $ref->{'owner'}, + $ref->{'copyright'}); +# if ($dbh->err()) { +# print STDERR "Error:".$dbh->errstr()."\n"; +# } + $ref = undef; } - $sth=$dbh->prepare('insert into metadata values ('. - '"'.delete($ref->{'title'}).'"'.','. - '"'.delete($ref->{'author'}).'"'.','. - '"'.delete($ref->{'subject'}).'"'.','. - '"'.$m2.'"'.','. - '"'.delete($ref->{'keywords'}).'"'.','. - '"'.'current'.'"'.','. - '"'.delete($ref->{'notes'}).'"'.','. - '"'.delete($ref->{'abstract'}).'"'.','. - '"'.delete($ref->{'mime'}).'"'.','. - '"'.delete($ref->{'language'}).'"'.','. - '"'.sqltime(delete($ref->{'creationdate'})).'"'.','. - '"'.sqltime(delete($ref->{'lastrevisiondate'})).'"'.','. - '"'.delete($ref->{'owner'}).'"'.','. - '"'.delete($ref->{'copyright'}).'"'.')'); - $sth->execute(); -} - -# ----------------------------------------------------------- Clean up database -# Need to, perhaps, remove stale SQL database records. -# ... not yet implemented - + + # --------------------------------------------------- Clean up database + # Need to, perhaps, remove stale SQL database records. + # ... not yet implemented + + # ------------------------------------------- Copy over the new db-files + system('mv '.$prodir.'/nohist_new_resevaldata.db '. + $prodir.'/nohist_resevaldata.db'); +} # --------------------------------------------------- Close database connection $dbh->disconnect; +print LOG "\n==== Searchcat completed ".localtime()." ====\n"; +close(LOG); +exit 0; + + + +# ============================================================================= # ---------------------------------------------------------------- Get metadata # significantly altered from subroutine present in lonnet @@ -258,30 +333,30 @@ sub metadata { my $parser=HTML::TokeParser->new(\$metastring); my $token; while ($token=$parser->get_token) { - if ($token->[0] eq 'S') { - my $entry=$token->[1]; - my $unikey=$entry; - if (defined($token->[2]->{'part'})) { - $unikey.='_'.$token->[2]->{'part'}; - } - if (defined($token->[2]->{'name'})) { - $unikey.='_'.$token->[2]->{'name'}; - } - if ($metacache{$uri.'keys'}) { - $metacache{$uri.'keys'}.=','.$unikey; - } else { - $metacache{$uri.'keys'}=$unikey; - } - map { - $metacache{$uri.''.$unikey.'.'.$_}=$token->[2]->{$_}; - } @{$token->[3]}; - unless ( - $metacache{$uri.''.$unikey}=$parser->get_text('/'.$entry) - ) { $metacache{$uri.''.$unikey}= - $metacache{$uri.''.$unikey.'.default'}; - } - } - } + if ($token->[0] eq 'S') { + my $entry=$token->[1]; + my $unikey=$entry; + if (defined($token->[2]->{'part'})) { + $unikey.='_'.$token->[2]->{'part'}; + } + if (defined($token->[2]->{'name'})) { + $unikey.='_'.$token->[2]->{'name'}; + } + if ($metacache{$uri.'keys'}) { + $metacache{$uri.'keys'}.=','.$unikey; + } else { + $metacache{$uri.'keys'}=$unikey; + } + map { + $metacache{$uri.''.$unikey.'.'.$_}=$token->[2]->{$_}; + } @{$token->[3]}; + unless ( + $metacache{$uri.''.$unikey}=$parser->get_text('/'.$entry) + ) { $metacache{$uri.''.$unikey}= + $metacache{$uri.''.$unikey.'.default'}; + } + } + } } return \%metacache; } @@ -289,12 +364,12 @@ sub metadata { # ------------------------------------------------------------ Serves up a file # returns either the contents of the file or a -1 sub getfile { - my $file=shift; - if (! -e $file ) { return -1; }; - my $fh=IO::File->new($file); - my $a=''; - while (<$fh>) { $a .=$_; } - return $a + my $file=shift; + if (! -e $file ) { return -1; }; + my $fh=IO::File->new($file); + my $a=''; + while (<$fh>) { $a .=$_; } + return $a; } # ------------------------------------------------------------- Declutters URLs @@ -335,7 +410,29 @@ sub propath { # ---------------------------- convert 'time' format into a datetime sql format sub sqltime { my ($sec,$min,$hour,$mday,$mon,$year,$wday,$yday,$isdst) = - localtime(@_[0]); + localtime(&unsqltime(@_[0])); $mon++; $year+=1900; return "$year-$mon-$mday $hour:$min:$sec"; } + +sub maketime { + my %th=@_; + return POSIX::mktime(($th{'seconds'},$th{'minutes'},$th{'hours'}, + $th{'day'},$th{'month'}-1, + $th{'year'}-1900,0,0,$th{'dlsav'})); +} + + +######################################### +# +# Retro-fixing of un-backward-compatible time format + +sub unsqltime { + my $timestamp=shift; + if ($timestamp=~/^(\d+)\-(\d+)\-(\d+)\s+(\d+)\:(\d+)\:(\d+)$/) { + $timestamp=&maketime('year'=>$1,'month'=>$2,'day'=>$3, + 'hours'=>$4,'minutes'=>$5,'seconds'=>$6); + } + return $timestamp; +} +