1: # The LearningOnline Network with CAPA
2: #
3: # $Id: lontrackstudent.pm,v 1.8 2004/12/02 19:01:55 matthew Exp $
4: #
5: # Copyright Michigan State University Board of Trustees
6: #
7: # This file is part of the LearningOnline Network with CAPA (LON-CAPA).
8: #
9: # LON-CAPA is free software; you can redistribute it and/or modify
10: # it under the terms of the GNU General Public License as published by
11: # the Free Software Foundation; either version 2 of the License, or
12: # (at your option) any later version.
13: #
14: # LON-CAPA is distributed in the hope that it will be useful,
15: # but WITHOUT ANY WARRANTY; without even the implied warranty of
16: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17: # GNU General Public License for more details.
18: #
19: # You should have received a copy of the GNU General Public License
20: # along with LON-CAPA; if not, write to the Free Software
21: # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
22: #
23: # /home/httpd/html/adm/gpl.txt
24: #
25: # http://www.lon-capa.org/
26: #
27: ###
28:
29: =pod
30:
31: =head1 NAME
32:
33: lontrackstudent
34:
35: =head1 SYNOPSIS
36:
37: Track student progress through course materials
38:
39: =over 4
40:
41: =cut
42:
43: package Apache::lontrackstudent;
44:
45: use strict;
46: use Apache::Constants qw(:common :http);
47: use Apache::lonnet();
48: use Apache::lonlocal;
49: use Time::HiRes;
50:
51: sub get_data {
52: my ($r,$prog_state,$navmap,$mode) = @_;
53: ##
54: ## Compose the query
55: &Apache::lonhtmlcommon::Update_PrgWin
56: ($r,$prog_state,&mt('Composing Query'));
57: #
58: my $query = &build_query($mode);
59: &Apache::lonnet::logthis('sending query '.$query);
60: ##
61: ## Send it along
62: my $home = $ENV{'course.'.$ENV{'request.course.id'}.'.home'};
63: my $reply=&Apache::lonnet::metadata_query($query,undef,undef,[$home]);
64: if (ref($reply) ne 'HASH') {
65: $r->print('<h2>'.
66: &mt('Error contacting home server for course: [_1]',
67: $reply).
68: '</h2>');
69: return;
70: }
71: my $results_file = $r->dir_config('lonDaemons').'/tmp/'.$reply->{$home};
72: my $endfile = $results_file.'.end';
73: ##
74: ## Check for the results
75: &Apache::lonhtmlcommon::Update_PrgWin
76: ($r,$prog_state,&mt('Waiting for results'));
77: my $maxtime = 500;
78: my $starttime = time;
79: while (! -e $endfile && (time-$starttime < $maxtime)) {
80: &Apache::lonhtmlcommon::Update_PrgWin
81: ($r,$prog_state,&mt('Waiting up to [_1] seconds for results',
82: $starttime+$maxtime-time));
83: sleep(1);
84: }
85: if (! -e $endfile) {
86: $r->print('<h2>'.
87: &mt('Unable to retrieve data.').'</h2>');
88: $r->print(&mt('Please try again in a few minutes.'));
89: return;
90: }
91: # $r->print('<h2>'.&mt('Elapsed Time = [_1] seconds',
92: # time-$starttime).'</h2>');
93: $r->rflush();
94: &Apache::lonhtmlcommon::Update_PrgWin
95: ($r,$prog_state,&mt('Parsing results'));
96: # $r->print('<h2>'.
97: # &mt('Reloading this page may result in newer data').
98: # '</h2>');
99: &output_results($r,$results_file,$navmap,$mode);
100: &Apache::lonhtmlcommon::Update_PrgWin($r,$prog_state,&mt('Finished!'));
101: return;
102: }
103:
104: sub build_query {
105: my ($mode) = @_;
106: my $cid = $ENV{'request.course.id'};
107: my $domain = $ENV{'course.'.$cid.'.domain'};
108: my $home = $ENV{'course.'.$cid.'.home'};
109: my $course = $ENV{'course.'.$cid.'.num'};
110: my $prefix = $course.'_'.$domain.'_';
111: #
112: my $student_table = $prefix.'students';
113: my $res_table = $prefix.'resource';
114: my $action_table = $prefix.'actions';
115: my $machine_table = $prefix.'machine_table';
116: my $activity_table = $prefix.'activity';
117: #
118: my $query;
119: if ($mode eq 'full_class') {
120: $query = qq{
121: SELECT B.resource,A.time,C.student,A.action,E.machine,A.action_values
122: FROM $activity_table AS A
123: LEFT JOIN $res_table AS B ON B.res_id=A.res_id
124: LEFT JOIN $student_table AS C ON C.student_id=A.student_id
125: LEFT JOIN $machine_table AS E ON E.machine_id=A.machine_id
126: WHERE A.student_id>10
127: ORDER BY A.time DESC
128: LIMIT 500
129: };
130: } elsif ($mode =~ /^student:(.*):(.*)$/) {
131: my $student = $1.':'.$2;
132: $query = qq{
133: SELECT B.resource,A.time,A.action,E.machine,A.action_values
134: FROM $activity_table AS A
135: LEFT JOIN $res_table AS B ON B.res_id=A.res_id
136: LEFT JOIN $student_table AS C ON C.student_id=A.student_id
137: LEFT JOIN $machine_table AS E ON E.machine_id=A.machine_id
138: WHERE C.student='$student'
139: ORDER BY A.time DESC
140: LIMIT 500
141: };
142: }
143: $query =~ s|$/||g;
144: return $query;
145: }
146:
147: ###################################################################
148: ###################################################################
149: sub output_results {
150: my ($r,$results_file,$navmap,$mode) = @_;
151: ##
152: ##
153: if (! open(ACTIVITYDATA,$results_file)) {
154: $r->print('<h2>'.&mt('Unable to read results file.').'</h2>'.
155: '<p>'.
156: &mt('This is a serious error and has been logged. '.
157: 'You should contact your system administrator '.
158: 'to resolve this issue.').
159: '</p>');
160: return;
161: }
162: ##
163: ##
164: my $tableheader;
165: if ($mode eq 'full_class') {
166: $tableheader =
167: '<table><tr>'.
168: '<th>'.&mt('Resource').'</th>'.
169: '<th>'.&mt('Time').'</th>'.
170: '<th>'.&mt('Student').'</th>'.
171: '<th>'.&mt('Action').'</th>'.
172: # '<th>'.&mt('Originating Server').'</th>'.
173: '<th align="left">'.&mt('Data').'</th>'.
174: '</tr>'.$/;
175: } elsif ($mode =~ /^student:(.*):(.*)$/) {
176: $tableheader =
177: '<table><tr>'.
178: '<th>'.&mt('Resource').'</th>'.
179: '<th>'.&mt('Time').'</th>'.
180: '<th>'.&mt('Action').'</th>'.
181: # '<th>'.&mt('Originating Server').'</th>'.
182: '<th align="left">'.&mt('Data').'</th>'.
183: '</tr>'.$/;
184: }
185: my $count = -1;
186: $r->rflush();
187: ##
188: ##
189: while (my $line = <ACTIVITYDATA>) {
190: chomp($line);
191: $line = &Apache::lonnet::unescape($line);
192: if (++$count % 50 == 0) {
193: if ($count != 0) {
194: $r->print('</table>'.$/);
195: $r->rflush();
196: }
197: $r->print($tableheader);
198: }
199: my ($symb,$timestamp,$student,$action,$machine,$values);
200: if ($mode eq 'full_class') {
201: ($symb,$timestamp,$student,$action,$machine,$values) =
202: map { &Apache::lonnet::unescape($_); } split(',',$line,6);
203: } else {
204: ($symb,$timestamp,$action,$machine,$values) =
205: map { &Apache::lonnet::unescape($_); } split(',',$line,5);
206: }
207: my ($title,$src);
208: if ($symb =~ m:^/adm/:) {
209: $title = $symb;
210: $src = $symb;
211: } else {
212: my $nav_res = $navmap->getBySymb($symb);
213: if (defined($nav_res)) {
214: $title = $nav_res->title();
215: $src = $nav_res->src();
216: } else {
217: if ($src =~ m|^/res|) {
218: $title = $src;
219: } elsif ($values =~ /^\s*$/ &&
220: (! defined($src) || $src =~ /^\s*$/)) {
221: next;
222: } elsif ($values =~ /^\s*$/) {
223: $values = $src;
224: } else {
225: $title = 'unable to retrieve title';
226: $src = '/dev/null';
227: }
228: }
229: }
230: my %classes;
231: my $class_count=0;
232: if (! exists($classes{$symb})) {
233: $classes{$symb} = $class_count++;
234: }
235: my $class = 'a';#.$classes{$symb};
236: #
237: if ($symb eq '/prtspool/') {
238: $class = 'print';
239: $title = 'retrieve printout';
240: } elsif ($symb =~ m|^/adm/([^/]+)|) {
241: $class = $1;
242: } elsif ($symb =~ m|^/adm/|) {
243: $class = 'adm';
244: }
245: if ($title eq 'unable to retrieve title') {
246: $title =~ s/ /\ /g;
247: $class = 'warning';
248: }
249: if (! defined($title) || $title eq '') {
250: $title = 'untitled';
251: $class = 'warning';
252: }
253: # Clean up the values
254: $values =~ s/counter=\d+$//;
255: #
256: # Build the row for output
257: my $tablerow = qq{<tr class="$class">};
258: if ($src =~ m|^/adm/|) {
259: $tablerow .=
260: '<td><nobr>'.$title.'</td>';
261: } else {
262: $tablerow .=
263: '<td><nobr>'.
264: '<a href="'.$src.'">'.$title.'</a>'.
265: '</nobr></td>';
266: }
267: $tablerow .= '<td><nobr>'.$timestamp.'</nobr></td>';
268: if ($mode eq 'full_class') {
269: $tablerow.='<td>'.$student.'</td>';
270: }
271: $tablerow .=
272: '<td>'.$action.'</td>'.
273: # '<td>'.$machine.'</td>'.
274: '<td>'.$values.'</td>'.
275: '</tr>';
276: $r->print($tablerow.$/);
277: }
278: $r->print('</table>'.$/) if (! $count % 50);
279: close(ACTIVITYDATA);
280: return;
281: }
282:
283: ###################################################################
284: ###################################################################
285: sub request_data_update {
286: my $command = 'prepare activity log';
287: my $cid = $ENV{'request.course.id'};
288: my $domain = $ENV{'course.'.$cid.'.domain'};
289: my $home = $ENV{'course.'.$cid.'.home'};
290: my $course = $ENV{'course.'.$cid.'.num'};
291: # &Apache::lonnet::logthis($command.' '.$course.' '.$domain.' '.$home);
292: my $result = &Apache::lonnet::metadata_query($command,$course,$domain,
293: [$home]);
294: return $result;
295: }
296:
297: ###################################################################
298: ###################################################################
299: sub pick_student {
300: my ($r) = @_;
301: $r->print("Sorry, cannot display classlist at this time. Come back another time.");
302: return;
303: }
304:
305: ###################################################################
306: ###################################################################
307: sub styles {
308: return <<END;
309: <style type="text/css">
310: tr.warning { background-color: \#CCCCCC; }
311: tr.chat { background-color: \#CCCCCC; }
312: tr.chatfetch { background-color: \#CCCCCC; }
313: tr.navmaps { background-color: \#CCCCCC; }
314: tr.roles { background-color: \#CCCCCC; }
315: tr.flip { background-color: \#CCCCCC; }
316: tr.adm { background-color: \#CCCCCC; }
317: tr.print { background-color: \#CCCCCC; }
318: tr.printout { background-color: \#CCCCCC; }
319: tr.parmset { background-color: \#CCCCCC; }
320: tr.grades { background-color: \#CCCCCC; }
321: </style>
322: END
323: }
324:
325: sub developer_centric_styles {
326: return <<END;
327: <style type="text/css">
328: tr.warning { background-color: red; }
329: tr.chat { background-color: yellow; }
330: tr.chatfetch { background-color: yellow; }
331: tr.evaluate { background-color: red; }
332: tr.navmaps { background-color: \#777777; }
333: tr.roles { background-color: \#999999; }
334: tr.flip { background-color: \#BBBBBB; }
335: tr.adm { background-color: green; }
336: tr.print { background-color: blue; }
337: tr.parmset { background-color: \#000088; }
338: tr.printout { background-color: blue; }
339: tr.grades { background-color: \#CCCCCC; }
340: </style>
341: END
342: }
343:
344: ###################################################################
345: ###################################################################
346: sub handler {
347: my $r=shift;
348: my $c = $r->connection();
349: #
350: # Check for overloading here and on the course home server
351: my $loaderror=&Apache::lonnet::overloaderror($r);
352: if ($loaderror) { return $loaderror; }
353: $loaderror=
354: &Apache::lonnet::overloaderror
355: ($r,
356: $ENV{'course.'.$ENV{'request.course.id'}.'.home'});
357: if ($loaderror) { return $loaderror; }
358: #
359: # Check for access
360: if (! &Apache::lonnet::allowed('vsa',$ENV{'request.course.id'})) {
361: $ENV{'user.error.msg'}=
362: $r->uri.":vsa:0:0:Cannot student activity for complete course";
363: if (!
364: &Apache::lonnet::allowed('vsa',
365: $ENV{'request.course.id'}.'/'.
366: $ENV{'request.course.sec'})) {
367: $ENV{'user.error.msg'}=
368: $r->uri.":vsa:0:0:Cannot view student activity with given role";
369: return HTTP_NOT_ACCEPTABLE;
370: }
371: }
372: #
373: # Send the header
374: &Apache::loncommon::no_cache($r);
375: &Apache::loncommon::content_type($r,'text/html');
376: $r->send_http_header;
377: if ($r->header_only) { return OK; }
378: #
379: # Extract form elements from query string
380: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
381: ['selected_student']);
382: #
383: # We will almost always need this...
384: my $navmap = Apache::lonnavmaps::navmap->new();
385: #
386: &Apache::lonhtmlcommon::clear_breadcrumbs();
387: &Apache::lonhtmlcommon::add_breadcrumb({href=>'/adm/studentactivity',
388: title=>'Student Activity',
389: text =>'Student Activity',
390: faq=>139,
391: bug=>'instructor interface'});
392: #
393: # Give the LON-CAPA page header
394: $r->print('<html><head>'.&styles.'<title>'.
395: &mt('Student Activity').
396: "</title></head>\n".
397: &Apache::loncommon::bodytag('Student Activity').
398: &Apache::lonhtmlcommon::breadcrumbs(undef,'Student Activity'));
399: $r->rflush();
400: #
401: # Begin form output
402: $r->print('<form name="trackstudent" method="post" action="/adm/trackstudent">');
403: $r->print('<br />');
404: $r->print('<div name="statusline">'.
405: &mt('Status:[_1]',
406: '<input type="text" name="status" size="60" value="" />').
407: '</div>');
408: $r->rflush();
409: my %prog_state=&Apache::lonhtmlcommon::Create_PrgWin
410: ($r,&mt('Student Activity Retrieval'),
411: &mt('Student Activity Retrieval'),undef,'inline',undef,
412: 'trackstudent','status');
413: &Apache::lonhtmlcommon::Update_PrgWin
414: ($r,\%prog_state,&mt('Contacting course home server'));
415: #
416: my $result = &request_data_update();
417: if (ref($result) eq 'HASH') {
418: $result = join(' ',map { $_.'=>'.$result->{$_}; } keys(%$result));
419: }
420: #
421: if (exists($ENV{'form.selected_student'})) {
422: # For now, just show all the data, in the future allow selection of
423: # a student
424: my ($sname,$sdom) = split(':',$ENV{'form.selected_student'});
425: if ($sname =~ /^\w*$/ && $sdom =~ /^\w*$/) {
426: $r->print('<h2>'.
427: &mt('Recent activity of [_1]@[_2]',$sname,$sdom).
428: '</h2>');
429: $r->print('<p>'.&mt(<<END).'</p>');
430: Compiling student activity data can take a long time.
431: It may be necessary to reload this page to get the most current information.
432: END
433: &get_data($r,\%prog_state,$navmap,
434: 'student:'.$ENV{'form.selected_student'});
435: } else {
436: $r->print('<h2>'.&mt('Unable to process for [_1]@[_2]',
437: $sname,$sdom).'</h2>');
438: }
439: } else {
440: # For now, just show all the data instead of limiting it to one student
441: &get_data($r,\%prog_state,$navmap,'full_class');
442: }
443: #
444: &Apache::lonhtmlcommon::Update_PrgWin($r,\%prog_state,&mt('Done'));
445: &Apache::lonhtmlcommon::Close_PrgWin($r,\%prog_state);
446: #
447: $r->print("</form>\n");
448: $r->print("</body>\n</html>\n");
449: $r->rflush();
450: #
451: return OK;
452: }
453:
454: 1;
455:
456: #######################################################
457: #######################################################
458:
459: =pod
460:
461: =back
462:
463: =cut
464:
465: #######################################################
466: #######################################################
467:
468: __END__
469:
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