--- loncom/interface/loncoursedata.pm 2002/07/09 15:43:49 1.1 +++ loncom/interface/loncoursedata.pm 2002/08/03 18:47:24 1.11 @@ -1,7 +1,7 @@ # The LearningOnline Network with CAPA # (Publication Handler # -# $Id: loncoursedata.pm,v 1.1 2002/07/09 15:43:49 stredwic Exp $ +# $Id: loncoursedata.pm,v 1.11 2002/08/03 18:47:24 stredwic Exp $ # # Copyright Michigan State University Board of Trustees # @@ -70,7 +70,7 @@ here in the future. =pod -=item &DownloadNamePIDSection() +=item &DownloadClasslist() Collects lastname, generation, middlename, firstname, PID, and section for each student from their environment database. The list of students is built from @@ -101,12 +101,23 @@ middlename, and PID : Key is $name.'stud =cut -sub DownloadStudentNamePIDSection { - my ($courseID, $c)=@_; +sub DownloadClasslist { + my ($courseID, $lastDownloadTime, $c)=@_; my ($courseDomain,$courseNumber)=split(/\_/,$courseID); + my %classlist; - my %classlist=&Apache::lonnet::dump('classlist',$courseDomain, - $courseNumber); + my $modifiedTime = &GetFileTimestamp($courseDomain, $courseNumber, + 'classlist.db', + $Apache::lonnet::perlvar{'lonUsersDir'}); + + if($lastDownloadTime ne 'Not downloaded' && + $lastDownloadTime >= $modifiedTime && $modifiedTime >= 0) { + $classlist{'lastDownloadTime'}=time; + $classlist{'UpToDate'} = 'true'; + return \%classlist; + } + + %classlist=&Apache::lonnet::dump('classlist',$courseDomain, $courseNumber); my ($checkForError)=keys (%classlist); if($checkForError =~ /^(con_lost|error|no_such_host)/i) { return \%classlist; @@ -135,18 +146,23 @@ sub DownloadStudentNamePIDSection { #Section my %section=&Apache::lonnet::dump('roles',$studentDomain,$studentName); - $classlist{$name.':section'}=\%section; + $classlist{$name.':sections'}=\%section; } + $classlist{'UpToDate'} = 'false'; + $classlist{'lastDownloadTime'}=time; + return \%classlist; } =pod -=item &DownloadStudentCourseInformation() +=item &DownloadCourseInformation() Dump of all the course information for a single student. There is no -pruning of data, it is all stored in a hash and returned. +pruning of data, it is all stored in a hash and returned. It also +checks the timestamp of the students course database file and only downloads +if it has been modified since the last download. =over 4 @@ -165,13 +181,31 @@ database. =cut -sub DownloadStudentCourseInformation { - my ($name,$courseID)=@_; - my ($studentName,$studentDomain) = split(/\:/,$name); - - # Download student course data - my %courseData=&Apache::lonnet::dump($courseID,$studentDomain, - $studentName); +sub DownloadCourseInformation { + my ($namedata,$courseID,$lastDownloadTime)=@_; + my %courseData; + my ($name,$domain) = split(/\:/,$namedata); + + my $modifiedTime = &GetFileTimestamp($domain, $name, + $courseID.'.db', + $Apache::lonnet::perlvar{'lonUsersDir'}); + + if($lastDownloadTime >= $modifiedTime) { + $courseData{'lastDownloadTime'}=time; + $courseData{'UpToDate'} = 'true'; + return \%courseData; + } + + # Download course data + my $WhatIWant = '(version:(\w|\/|\.)+?$|'; + $WhatIWant .= '\d+?:(\w|\/|\.)+?:(resource\.\d+\.'; + $WhatIWant .= '(solved|tries|previous|awarded|(\d+\.submission))'; + $WhatIWant .= '|timestamp)'; + $WhatIWant .= ')'; +# %courseData=&Apache::lonnet::dump($courseID, $domain, $name, $WhatIWant); + %courseData=&Apache::lonnet::dump($courseID, $domain, $name); + $courseData{'UpToDate'} = 'false'; + $courseData{'lastDownloadTime'}=time; return \%courseData; } @@ -227,7 +261,7 @@ sub ProcessTopResourceMap { if($c->aborted()) { return; } - if(tie(%hash,'GDBM_File',"$fn.db",&GDBM_READER,0640)) { + if(tie(%hash,'GDBM_File',"$fn.db",&GDBM_READER(),0640)) { last; } $tieTries++; @@ -250,13 +284,16 @@ sub ProcessTopResourceMap { $currentSequence=-1; my $topLevelSequenceNumber = $currentSequence; + my %sequenceRecord; while(1) { if($c->aborted()) { last; } # HANDLE NEW SEQUENCE! #if page || sequence - if(defined($hash{'map_pc_'.$hash{'src_'.$currentResourceID}})) { + if(defined($hash{'map_pc_'.$hash{'src_'.$currentResourceID}}) && + !defined($sequenceRecord{$currentResourceID})) { + $sequenceRecord{$currentResourceID}++; push(@sequences, $currentSequence); push(@currentResource, $currentResourceID); push(@finishResource, $lastResourceID); @@ -294,7 +331,10 @@ sub ProcessTopResourceMap { my $partB=$2; if($hash{'src_'.$currentResourceID}=~ /\.(problem|exam|quiz|assess|survey|form)$/ && - $partA eq $currentSequence) { + $partA eq $currentSequence && + !defined($sequenceRecord{$currentSequence.':'. + $currentResourceID})) { + $sequenceRecord{$currentSequence.':'.$currentResourceID}++; my $Problem = &Apache::lonnet::symbclean( &Apache::lonnet::declutter($hash{'map_id_'.$partA}). '___'.$partB.'___'. @@ -309,22 +349,58 @@ sub ProcessTopResourceMap { ':'.$currentResourceID; } - # Get Parts for problem my $meta=$hash{'src_'.$currentResourceID}; - foreach (split(/\,/,&Apache::lonnet::metadata($meta,'keys'))) { - if($_=~/^stores\_(\d+)\_tries$/) { - my $Part=&Apache::lonnet::metadata($meta,$_.'.part'); - if(!defined($cache->{$currentSequence.':'. - $currentResourceID.':parts'})) { - $cache->{$currentSequence.':'.$currentResourceID. - ':parts'}=$Part; - } else { - $cache->{$currentSequence.':'.$currentResourceID. - ':parts'}.=':'.$Part; +# $cache->{$currentResourceID.':title'}= +# &Apache::lonnet::metdata($meta,'title'); + $cache->{$currentResourceID.':title'}= + $hash{'title_'.$currentResourceID}; + $cache->{$currentResourceID.':source'}= + $hash{'src_'.$currentResourceID}; + + # Get Parts for problem + my %beenHere; + foreach (split(/\,/,&Apache::lonnet::metadata($meta,'packages'))) { + if(/^\w+response_\d+.*/) { + my (undef, $partId, $responseId) = split(/_/,$_); + if($beenHere{'p:'.$partId} == 0) { + $beenHere{'p:'.$partId}++; + if(!defined($cache->{$currentSequence.':'. + $currentResourceID.':parts'})) { + $cache->{$currentSequence.':'.$currentResourceID. + ':parts'}=$partId; + } else { + $cache->{$currentSequence.':'.$currentResourceID. + ':parts'}.=':'.$partId; + } } - } - } - } + if($beenHere{'r:'.$partId.':'.$responseId} == 0) { + $beenHere{'r:'.$partId.':'.$responseId}++; + if(!defined($cache->{$currentSequence.':'. + $currentResourceID.':'.$partId. + ':responseIDs'})) { + $cache->{$currentSequence.':'.$currentResourceID. + ':'.$partId.':responseIDs'}=$responseId; + } else { + $cache->{$currentSequence.':'.$currentResourceID. + ':'.$partId.':responseIDs'}.=':'. + $responseId; + } + } + if(/^optionresponse/ && + $beenHere{'o:'.$partId.':'.$currentResourceID} == 0) { + $beenHere{'o:'.$partId.$currentResourceID}++; + if(defined($cache->{'OptionResponses'})) { + $cache->{'OptionResponses'}.= ':::'. + $currentResourceID.':'. + $partId.':'.$responseId; + } else { + $cache->{'OptionResponses'}= $currentResourceID. + ':'.$partId.':'.$responseId; + } + } + } + } + } # if resource == finish resource, then it is the end of a sequence/page if($currentResourceID eq $lastResourceID) { @@ -336,6 +412,8 @@ sub ProcessTopResourceMap { # Capture sequence information here $cache->{$currentSequence.':title'}= $hash{'title_'.$currentResourceID}; + $cache->{$currentSequence.':source'}= + $hash{'src_'.$currentResourceID}; my $totalProblems=0; foreach my $currentProblem (split(/\:/, @@ -371,17 +449,24 @@ sub ProcessTopResourceMap { if($currentSequence eq $topLevelSequenceNumber) { last; } - } + } # MOVE!!! # move to next resource unless(defined($hash{'to_'.$currentResourceID})) { # big problem, need to handle. Next is probably wrong + my $errorMessage = 'Big problem in '; + $errorMessage .= 'loncoursedata::ProcessTopLevelMap.'; + $errorMessage .= ' bighash to_$currentResourceID not defined!'; + &Apache::lonnet::logthis($errorMessage); last; } my @nextResources=(); foreach (split(/\,/,$hash{'to_'.$currentResourceID})) { - push(@nextResources, $hash{'goesto_'.$_}); + if(!defined($sequenceRecord{$currentSequence.':'. + $hash{'goesto_'.$_}})) { + push(@nextResources, $hash{'goesto_'.$_}); + } } push(@currentResource, @nextResources); # Set the next resource to be processed @@ -399,165 +484,17 @@ sub ProcessTopResourceMap { =pod -=item &ProcessSection() - -Determine the section number for a student for the class. A student can have -multiple sections for the same class. The correct one is chosen. - -=over 4 - -Input: $sectionData, $courseid, $ActiveFlag - -$sectionData: A pointer to a hash containing all section data for this -student for the class - -$courseid: The course ID. - -$ActiveFlag: The student's active status (Active/Expired) - -Output: $oldsection, $cursection, or -1 - -$oldsection and $cursection and sections number that will be displayed in the -chart. - --1 is returned if an error occurs. - -=back - -=cut - -sub ProcessSection { - my ($sectionData,$courseid,$ActiveFlag)=@_; - $courseid=~s/\_/\//g; - $courseid=~s/^(\w)/\/$1/; - - my $cursection='-1'; - my $oldsection='-1'; - my $status='Expired'; - my $section=''; - foreach my $key (keys (%$sectionData)) { - my $value = $sectionData->{$key}; - if ($key=~/^$courseid(?:\/)*(\w+)*\_st$/) { - $section=$1; - if($key eq $courseid.'_st') { - $section=''; - } - my ($dummy,$end,$start)=split(/\_/,$value); - my $now=time; - my $notactive=0; - if ($start) { - if($now<$start) { - $notactive=1; - } - } - if($end) { - if ($now>$end) { - $notactive=1; - } - } - if($notactive == 0) { - $status='Active'; - $cursection=$section; - last; - } - if($notactive == 1) { - $oldsection=$section; - } - } - } - if($status eq $ActiveFlag) { - if($cursection eq '-1') { - return $oldsection; - } - return $cursection; - } - if($ActiveFlag eq 'Any') { - if($cursection eq '-1') { - return $oldsection; - } - return $cursection; - } - return '-1'; -} - -=pod +=item &ProcessClasslist() -=item &ProcessNamePIDSection() +Taking the class list dumped from &DownloadClasslist(), all the +students and their non-class information is processed using the +&ProcessStudentInformation() function. A date stamp is also recorded for +when the data was processed. Takes data downloaded for a student and breaks it up into managable pieces and stored in cache data. The username, domain, class related date, PID, full name, and section are all processed here. -=over 4 - -Input: $cache, $studentInformation, $section, $date, $name, $courseID - -$cache: A hash pointer to store the data - -$studentInformation: Student information is what was requested in -&DownloadPrerequistedData(). See that function for what data is requested. - -$section: A hash pointer to class section related information. - -$date: A composite of the start and end date for this class for this -student. Format: end:start - -$name: the username:domain information - -$courseID: The course ID - -Output: None - -*NOTE: There is no return value, but if an error occurs a key is added to -the cache data with the value being the error message. The key is -username:domain:error. It will only exist if an error occurs. - -=back - -=cut - -sub ProcessStudentNamePIDSection { - my ($cache,$studentInformation,$section,$date,$name,$courseID,$status)=@_; - my ($studentName,$studentDomain) = split(/\:/,$name); - - $cache->{$name.':username'}=$studentName; - $cache->{$name.':domain'}=$studentDomain; - $cache->{$name.':date'}=$date; - - my ($checkForError)=keys(%$studentInformation); - if($checkForError =~ /^(con_lost|error|no_such_host)/i) { - $cache->{$name.':error'}= - 'Could not download student environment data.'; - $cache->{$name.':fullname'}=''; - $cache->{$name.':id'}=''; - } else { - $cache->{$name.':fullname'}=&ProcessFullName( - $studentInformation->{'lastname'}, - $studentInformation->{'generation'}, - $studentInformation->{'firstname'}, - $studentInformation->{'middlename'}); - $cache->{$name.':id'}=$studentInformation->{'id'}; - } - - # Get student's section number - my $sec=&ProcessSection($section, $courseID, $status); - if($sec != -1) { - $cache->{$name.':section'}=$sec; - } else { - $cache->{$name.':section'}=''; - } - - return; -} - -=pod - -=item &ProcessClassList() - -Taking the class list dumped from &DownloadPrerequisiteData(), all the -students and their non-class information is processed using the -&ProcessStudentInformation() function. A date stamp is also recorded for -when the data was processed. =over 4 @@ -566,7 +503,7 @@ Input: $cache, $classlist, $courseID, $C $cache: A hash pointer to store the data $classlist: The hash of data collected about a student from -&DownloadPrerequisteData(). The hash contains a list of students, a pointer +&DownloadClasslist(). The hash contains a list of students, a pointer to a hash of student information for each student, and each student's section number. @@ -586,28 +523,93 @@ be considered in an arbitrary order. =cut -sub ProcessClassList { - my ($cache,$classlist,$courseID,$status,$c)=@_; +sub ProcessClasslist { + my ($cache,$classlist,$courseID,$c)=@_; my @names=(); + $cache->{'ClasslistTimeStamp'}=$classlist->{'lastDownloadTime'}; + if($classlist->{'UpToDate'} eq 'true') { + return split(/:::/,$cache->{'NamesOfStudents'});; + } + foreach my $name (keys(%$classlist)) { if($name =~ /\:section/ || $name =~ /\:studentInformation/ || - $name eq '') { + $name eq '' || $name eq 'UpToDate' || $name eq 'lastDownloadTime') { next; } if($c->aborted()) { - last; + return (); } push(@names,$name); - &ProcessStudentNamePIDSection($cache, - $classlist->{$name.':studentInformation'}, - $classlist->{$name.':section'}, - $classlist->{$name}, - $name,$courseID,$status); + my $studentInformation = $classlist->{$name.':studentInformation'}, + my $sectionData = $classlist->{$name.':sections'}, + my $date = $classlist->{$name}, + my ($studentName,$studentDomain) = split(/\:/,$name); + + $cache->{$name.':username'}=$studentName; + $cache->{$name.':domain'}=$studentDomain; + # Initialize timestamp for student + if(!defined($cache->{$name.':lastDownloadTime'})) { + $cache->{$name.':lastDownloadTime'}='Not downloaded'; + $cache->{$name.':updateTime'}=' Not updated'; + } + + my ($checkForError)=keys(%$studentInformation); + if($checkForError =~ /^(con_lost|error|no_such_host)/i) { + $cache->{$name.':error'}= + 'Could not download student environment data.'; + $cache->{$name.':fullname'}=''; + $cache->{$name.':id'}=''; + } else { + $cache->{$name.':fullname'}=&ProcessFullName( + $studentInformation->{'lastname'}, + $studentInformation->{'generation'}, + $studentInformation->{'firstname'}, + $studentInformation->{'middlename'}); + $cache->{$name.':id'}=$studentInformation->{'id'}; + } + + my ($end, $start)=split(':',$date); + $courseID=~s/\_/\//g; + $courseID=~s/^(\w)/\/$1/; + + my $sec=''; + foreach my $key (keys (%$sectionData)) { + my $value = $sectionData->{$key}; + if ($key=~/^$courseID(?:\/)*(\w+)*\_st$/) { + my $tempsection=$1; + if($key eq $courseID.'_st') { + $tempsection=''; + } + my ($dummy,$roleend,$rolestart)=split(/\_/,$value); + if($roleend eq $end && $rolestart eq $start) { + $sec = $tempsection; + last; + } + } + } + + my $status='Expired'; + if(((!$end) || time < $end) && ((!$start) || (time > $start))) { + $status='Active'; + } + $cache->{$name.':Status'}=$status; + $cache->{$name.':section'}=$sec; + + if($sec eq '' || !defined($sec) || $sec eq ' ') { + $sec = 'none'; + } + if(defined($cache->{'sectionList'})) { + if($cache->{'sectionList'} !~ /(^$sec:|^$sec$|:$sec$|:$sec:)/) { + $cache->{'sectionList'} .= ':'.$sec; + } + } else { + $cache->{'sectionList'} = $sec; + } } - # Time of download - $cache->{'time'}=localtime(); + $cache->{'ClasslistTimestamp'}=time; + $cache->{'NamesOfStudents'}=join(':::',@names); return @names; } @@ -617,7 +619,7 @@ sub ProcessClassList { =item &ProcessStudentData() Takes the course data downloaded for a student in -&DownloadStudentCourseInformation() and breaks it up into key value pairs +&DownloadCourseInformation() and breaks it up into key value pairs to be stored in the cached data. The keys are comprised of the $username:$domain:$keyFromCourseDatabase. The student username:domain is stored away signifying that the student's information has been downloaded and @@ -639,7 +641,7 @@ Output: None *NOTE: There is no output, but an error message is stored away in the cache data. This is checked in &FormatStudentData(). The key username:domain:error will only exist if an error occured. The error is an error from -&DownloadStudentCourseInformation(). +&DownloadCourseInformation(). =back @@ -648,23 +650,64 @@ will only exist if an error occured. Th sub ProcessStudentData { my ($cache,$courseData,$name)=@_; - my ($checkForError) = keys(%$courseData); - if($checkForError =~ /^(con_lost|error|no_such_host)/i) { - $cache->{$name.':error'}='Could not download course data.'; - } else { - foreach my $key (keys (%$courseData)) { - $cache->{$name.':'.$key}=$courseData->{$key}; - } - if(defined($cache->{'NamesOfStudents'})) { - $cache->{'NamesOfStudents'}.=':::'.$name; + if($courseData->{'UpToDate'} eq 'true') { + $cache->{$name.':lastDownloadTime'}=$courseData->{'lastDownloadTime'}; + if($courseData->{'lastDownloadTime'} eq 'Not downloaded') { + $cache->{$name.':updateTime'} = ' Not updated'; } else { - $cache->{'NamesOfStudents'}=$name; + $cache->{$name.':updateTime'}= + localtime($courseData->{'lastDownloadTime'}); } + return; + } + + my @courseKeys = keys(%$courseData); + + foreach (@courseKeys) { + if(/^(con_lost|error|no_such_host)/i) { + $cache->{$name.':error'}='Could not download course data.'; + return; + } + } + + $cache->{$name.':lastDownloadTime'}=$courseData->{'lastDownloadTime'}; + if($courseData->{'lastDownloadTime'} eq 'Not downloaded') { + $cache->{$name.':updateTime'} = ' Not updated'; + } else { + $cache->{$name.':updateTime'}= + localtime($courseData->{'lastDownloadTime'}); + } + foreach (@courseKeys) { + $cache->{$name.':'.$_}=$courseData->{$_}; } return; } +sub LoadDiscussion { + my ( $courseID)=@_; + my %Discuss=(); + my %contrib=&Apache::lonnet::dump( + $courseID, + $ENV{'course.'.$courseID.'.domain'}, + $ENV{'course.'.$courseID.'.num'}); + + #my %contrib=&DownloadCourseInformation($name, $courseID, 0); + + foreach my $temp(keys %contrib) { + if ($temp=~/^version/) { + my $ver=$contrib{$temp}; + my ($dummy,$prb)=split(':',$temp); + for (my $idx=1; $idx<=$ver; $idx++ ) { + my $name=$contrib{"$idx:$prb:sendername"}; + $Discuss{"$name:$prb"}=$idx; + } + } + } + + return \%Discuss; +} + # ----- END PROCESSING FUNCTIONS --------------------------------------- =pod @@ -773,9 +816,9 @@ sub TestCacheData { while($tieTries < $totalDelay) { my $result=0; if($isCached) { - $result=tie(%testData,'GDBM_File',$ChartDB,&GDBM_READER,0640); + $result=tie(%testData,'GDBM_File',$ChartDB,&GDBM_READER(),0640); } else { - $result=tie(%testData,'GDBM_File',$ChartDB,&GDBM_NEWDB,0640); + $result=tie(%testData,'GDBM_File',$ChartDB,&GDBM_NEWDB(),0640); } if($result) { last; @@ -792,6 +835,25 @@ sub TestCacheData { return $isCached; } +sub GetFileTimestamp { + my ($studentDomain,$studentName,$filename,$root)=@_; + $studentDomain=~s/\W//g; + $studentName=~s/\W//g; + my $subdir=$studentName.'__'; + $subdir =~ s/(.)(.)(.).*/$1\/$2\/$3/; + my $proname="$studentDomain/$subdir/$studentName"; + $proname .= '/'.$filename; + my @dir = &Apache::lonnet::dirlist($proname, $studentDomain, $studentName, + $root); + my $fileStat = $dir[0]; + my @stats = split('&', $fileStat); + if(@stats) { + return $stats[9]; + } else { + return -1; + } +} + # ----- END HELPER FUNCTIONS -------------------------------------------- 1;