3 // This file is part of Moodle - http://moodle.org/
5 // Moodle is free software: you can redistribute it and/or modify
6 // it under the terms of the GNU General Public License as published by
7 // the Free Software Foundation, either version 3 of the License, or
8 // (at your option) any later version.
10 // Moodle is distributed in the hope that it will be useful,
11 // but WITHOUT ANY WARRANTY; without even the implied warranty of
12 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 // GNU General Public License for more details.
15 // You should have received a copy of the GNU General Public License
16 // along with Moodle. If not, see <http://www.gnu.org/licenses/>.
21 * @copyright 1999 onwards Martin Dougiamas {@link http://moodle.com}
22 * @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
25 defined('MOODLE_INTERNAL') || die();
27 /** THESE CONSTANTS ARE USED FOR THE REPORTING PAGE. */
29 define('STATS_REPORT_LOGINS',1); // double impose logins and unique logins on a line graph. site course only.
30 define('STATS_REPORT_READS',2); // double impose student reads and teacher reads on a line graph.
31 define('STATS_REPORT_WRITES',3); // double impose student writes and teacher writes on a line graph.
32 define('STATS_REPORT_ACTIVITY',4); // 2+3 added up, teacher vs student.
33 define('STATS_REPORT_ACTIVITYBYROLE',5); // all activity, reads vs writes, selected by role.
35 // user level stats reports.
36 define('STATS_REPORT_USER_ACTIVITY',7);
37 define('STATS_REPORT_USER_ALLACTIVITY',8);
38 define('STATS_REPORT_USER_LOGINS',9);
39 define('STATS_REPORT_USER_VIEW',10); // this is the report you see on the user profile.
41 // admin only ranking stats reports
42 define('STATS_REPORT_ACTIVE_COURSES',11);
43 define('STATS_REPORT_ACTIVE_COURSES_WEIGHTED',12);
44 define('STATS_REPORT_PARTICIPATORY_COURSES',13);
45 define('STATS_REPORT_PARTICIPATORY_COURSES_RW',14);
47 // start after 0 = show dailies.
48 define('STATS_TIME_LASTWEEK',1);
49 define('STATS_TIME_LAST2WEEKS',2);
50 define('STATS_TIME_LAST3WEEKS',3);
51 define('STATS_TIME_LAST4WEEKS',4);
53 // start after 10 = show weeklies
54 define('STATS_TIME_LAST2MONTHS',12);
56 define('STATS_TIME_LAST3MONTHS',13);
57 define('STATS_TIME_LAST4MONTHS',14);
58 define('STATS_TIME_LAST5MONTHS',15);
59 define('STATS_TIME_LAST6MONTHS',16);
61 // start after 20 = show monthlies
62 define('STATS_TIME_LAST7MONTHS',27);
63 define('STATS_TIME_LAST8MONTHS',28);
64 define('STATS_TIME_LAST9MONTHS',29);
65 define('STATS_TIME_LAST10MONTHS',30);
66 define('STATS_TIME_LAST11MONTHS',31);
67 define('STATS_TIME_LASTYEAR',32);
69 // different modes for what reports to offer
70 define('STATS_MODE_GENERAL',1);
71 define('STATS_MODE_DETAILED',2);
72 define('STATS_MODE_RANKED',3); // admins only - ranks courses
74 // Output string when nodebug is on
75 define('STATS_PLACEHOLDER_OUTPUT', '.');
78 * Print daily cron progress
79 * @param string $ident
81 function stats_progress($ident) {
85 if ($ident == 'init') {
86 $init = $start = microtime(true);
90 $elapsed = round(microtime(true) - $start);
91 $start = microtime(true);
93 if (debugging('', DEBUG_ALL)) {
94 mtrace("$ident:$elapsed ", '');
96 mtrace(STATS_PLACEHOLDER_OUTPUT, '');
101 * Execute individual daily statistics queries
103 * @param string $sql The query to run
104 * @return boolean success
106 function stats_run_query($sql, $parameters = array()) {
110 $DB->execute($sql, $parameters);
111 } catch (dml_exception $e) {
113 if (debugging('', DEBUG_ALL)) {
114 mtrace($e->getMessage());
122 * Execute daily statistics gathering
124 * @param int $maxdays maximum number of days to be processed
125 * @return boolean success
127 function stats_cron_daily($maxdays=1) {
129 require_once($CFG->libdir.'/adminlib.php');
133 $fpcontext = context_course::instance(SITEID, MUST_EXIST);
135 // read last execution date from db
136 if (!$timestart = get_config(NULL, 'statslastdaily')) {
137 $timestart = stats_get_base_daily(stats_get_start_from('daily'));
138 set_config('statslastdaily', $timestart);
141 $nextmidnight = stats_get_next_day_start($timestart);
143 // are there any days that need to be processed?
144 if ($now < $nextmidnight) {
145 return true; // everything ok and up-to-date
148 $timeout = empty($CFG->statsmaxruntime) ? 60*60*24 : $CFG->statsmaxruntime;
150 if (!set_cron_lock('statsrunning', $now + $timeout)) {
154 // first delete entries that should not be there yet
155 $DB->delete_records_select('stats_daily', "timeend > $timestart");
156 $DB->delete_records_select('stats_user_daily', "timeend > $timestart");
158 // Read in a few things we'll use later
159 $viewactions = stats_get_action_names('view');
160 $postactions = stats_get_action_names('post');
162 $guest = (int)$CFG->siteguest;
163 $guestrole = (int)$CFG->guestroleid;
164 $defaultfproleid = (int)$CFG->defaultfrontpageroleid;
166 mtrace("Running daily statistics gathering, starting at $timestart:");
167 cron_trace_time_and_memory();
171 $failed = false; // failed stats flag
174 if (!stats_temp_table_create()) {
178 mtrace('Temporary tables created');
180 if(!stats_temp_table_setup()) {
184 mtrace('Enrolments calculated');
186 $totalactiveusers = $DB->count_records('user', array('deleted' => '0'));
188 while (!$failed && ($now > $nextmidnight)) {
189 if ($days >= $maxdays) {
195 core_php_time_limit::raise($timeout - 200);
199 set_cron_lock('statsrunning', time() + $timeout, true);
204 stats_progress('init');
206 if (!stats_temp_table_fill($timestart, $nextmidnight)) {
211 // Find out if any logs available for this day
212 $sql = "SELECT 'x' FROM {temp_log1} l";
213 $logspresent = $DB->get_records_sql($sql, null, 0, 1);
216 // Insert blank record to force Query 10 to generate additional row when no logs for
217 // the site with userid 0 exist. Added for backwards compatibility.
218 $DB->insert_record('temp_log1', array('userid' => 0, 'course' => SITEID, 'action' => ''));
221 // Calculate the number of active users today
222 $sql = 'SELECT COUNT(DISTINCT u.id)
224 JOIN {temp_log1} l ON l.userid = u.id
225 WHERE u.deleted = 0';
226 $dailyactiveusers = $DB->count_records_sql($sql);
230 // Process login info first
231 // Note: PostgreSQL doesn't like aliases in HAVING clauses
232 $sql = "INSERT INTO {temp_stats_user_daily}
233 (stattype, timeend, courseid, userid, statsreads)
235 SELECT 'logins', $nextmidnight AS timeend, ".SITEID." AS courseid,
236 userid, COUNT(id) AS statsreads
238 WHERE action = 'login'
240 HAVING COUNT(id) > 0";
242 if ($logspresent && !stats_run_query($sql)) {
246 $DB->update_temp_table_stats();
250 $sql = "INSERT INTO {temp_stats_daily} (stattype, timeend, courseid, roleid, stat1, stat2)
252 SELECT 'logins' AS stattype, $nextmidnight AS timeend, ".SITEID." AS courseid, 0,
253 COALESCE(SUM(statsreads), 0) as stat1, COUNT('x') as stat2
254 FROM {temp_stats_user_daily}
255 WHERE stattype = 'logins' AND timeend = $nextmidnight";
257 if ($logspresent && !stats_run_query($sql)) {
264 // Enrolments and active enrolled users
266 // Unfortunately, we do not know how many users were registered
267 // at given times in history :-(
268 // - stat1: enrolled users
269 // - stat2: enrolled users active in this period
270 // - SITEID is special case here, because it's all about default enrolment
271 // in that case, we'll count non-deleted users.
274 $sql = "INSERT INTO {temp_stats_daily} (stattype, timeend, courseid, roleid, stat1, stat2)
276 SELECT 'enrolments' as stattype, $nextmidnight as timeend, courseid, roleid,
277 COUNT(DISTINCT userid) as stat1, 0 as stat2
279 GROUP BY courseid, roleid";
281 if (!stats_run_query($sql)) {
287 // Set stat2 to the number distinct users with role assignments in the course that were active
288 // using table alias in UPDATE does not work in pg < 8.2
289 $sql = "UPDATE {temp_stats_daily}
292 SELECT COUNT(DISTINCT userid)
293 FROM {temp_enroled} te
294 WHERE roleid = {temp_stats_daily}.roleid
295 AND courseid = {temp_stats_daily}.courseid
300 WHERE l.course = {temp_stats_daily}.courseid
301 AND l.userid = te.userid
304 WHERE {temp_stats_daily}.stattype = 'enrolments'
305 AND {temp_stats_daily}.timeend = $nextmidnight
306 AND {temp_stats_daily}.courseid IN (
308 SELECT DISTINCT course FROM {temp_log2})";
310 if ($logspresent && !stats_run_query($sql, array('courselevel'=>CONTEXT_COURSE))) {
316 // Now get course total enrolments (roleid==0) - except frontpage
317 $sql = "INSERT INTO {temp_stats_daily} (stattype, timeend, courseid, roleid, stat1, stat2)
319 SELECT 'enrolments', $nextmidnight AS timeend, te.courseid AS courseid, 0 AS roleid,
320 COUNT(DISTINCT userid) AS stat1, 0 AS stat2
321 FROM {temp_enroled} te
323 HAVING COUNT(DISTINCT userid) > 0";
325 if ($logspresent && !stats_run_query($sql)) {
331 // Set stat 2 to the number of enrolled users who were active in the course
332 $sql = "UPDATE {temp_stats_daily}
335 SELECT COUNT(DISTINCT te.userid)
336 FROM {temp_enroled} te
337 WHERE te.courseid = {temp_stats_daily}.courseid
342 WHERE l.course = {temp_stats_daily}.courseid
343 AND l.userid = te.userid
347 WHERE {temp_stats_daily}.stattype = 'enrolments'
348 AND {temp_stats_daily}.timeend = $nextmidnight
349 AND {temp_stats_daily}.roleid = 0
350 AND {temp_stats_daily}.courseid IN (
354 WHERE l.course <> ".SITEID.")";
356 if ($logspresent && !stats_run_query($sql, array())) {
362 // Frontpage(==site) enrolments total
363 $sql = "INSERT INTO {temp_stats_daily} (stattype, timeend, courseid, roleid, stat1, stat2)
365 SELECT 'enrolments', $nextmidnight, ".SITEID.", 0, $totalactiveusers AS stat1,
366 $dailyactiveusers AS stat2" .
367 $DB->sql_null_from_clause();
369 if ($logspresent && !stats_run_query($sql)) {
373 // The steps up until this point, all add to {temp_stats_daily} and don't use new tables.
374 // There is no point updating statistics as they won't be used until the DELETE below.
375 $DB->update_temp_table_stats();
379 // Default frontpage role enrolments are all site users (not deleted)
380 if ($defaultfproleid) {
381 // first remove default frontpage role counts if created by previous query
383 FROM {temp_stats_daily}
384 WHERE stattype = 'enrolments'
385 AND courseid = ".SITEID."
386 AND roleid = $defaultfproleid
387 AND timeend = $nextmidnight";
389 if ($logspresent && !stats_run_query($sql)) {
395 $sql = "INSERT INTO {temp_stats_daily} (stattype, timeend, courseid, roleid, stat1, stat2)
397 SELECT 'enrolments', $nextmidnight, ".SITEID.", $defaultfproleid,
398 $totalactiveusers AS stat1, $dailyactiveusers AS stat2" .
399 $DB->sql_null_from_clause();
401 if ($logspresent && !stats_run_query($sql)) {
413 /// individual user stats (including not-logged-in) in each course, this is slow - reuse this data if possible
414 list($viewactionssql, $params1) = $DB->get_in_or_equal($viewactions, SQL_PARAMS_NAMED, 'view');
415 list($postactionssql, $params2) = $DB->get_in_or_equal($postactions, SQL_PARAMS_NAMED, 'post');
416 $sql = "INSERT INTO {temp_stats_user_daily} (stattype, timeend, courseid, userid, statsreads, statswrites)
418 SELECT 'activity' AS stattype, $nextmidnight AS timeend, course AS courseid, userid,
419 SUM(CASE WHEN action $viewactionssql THEN 1 ELSE 0 END) AS statsreads,
420 SUM(CASE WHEN action $postactionssql THEN 1 ELSE 0 END) AS statswrites
422 GROUP BY userid, course";
424 if ($logspresent && !stats_run_query($sql, array_merge($params1, $params2))) {
428 stats_progress('10');
431 /// How many view/post actions in each course total
432 $sql = "INSERT INTO {temp_stats_daily} (stattype, timeend, courseid, roleid, stat1, stat2)
434 SELECT 'activity' AS stattype, $nextmidnight AS timeend, c.id AS courseid, 0,
435 SUM(CASE WHEN l.action $viewactionssql THEN 1 ELSE 0 END) AS stat1,
436 SUM(CASE WHEN l.action $postactionssql THEN 1 ELSE 0 END) AS stat2
437 FROM {course} c, {temp_log1} l
438 WHERE l.course = c.id
441 if ($logspresent && !stats_run_query($sql, array_merge($params1, $params2))) {
445 stats_progress('11');
448 /// how many view actions for each course+role - excluding guests and frontpage
450 $sql = "INSERT INTO {temp_stats_daily} (stattype, timeend, courseid, roleid, stat1, stat2)
452 SELECT 'activity', $nextmidnight AS timeend, courseid, roleid, SUM(statsreads), SUM(statswrites)
455 SELECT pl.courseid, pl.roleid, sud.statsreads, sud.statswrites
456 FROM {temp_stats_user_daily} sud, (
458 SELECT DISTINCT te.userid, te.roleid, te.courseid
459 FROM {temp_enroled} te
460 WHERE te.roleid <> $guestrole
461 AND te.userid <> $guest
464 WHERE sud.userid = pl.userid
465 AND sud.courseid = pl.courseid
466 AND sud.timeend = $nextmidnight
467 AND sud.stattype='activity'
470 GROUP BY courseid, roleid
471 HAVING SUM(statsreads) > 0 OR SUM(statswrites) > 0";
473 if ($logspresent && !stats_run_query($sql, array('courselevel'=>CONTEXT_COURSE))) {
477 stats_progress('12');
479 /// how many view actions from guests only in each course - excluding frontpage
480 /// normal users may enter course with temporary guest access too
482 $sql = "INSERT INTO {temp_stats_daily} (stattype, timeend, courseid, roleid, stat1, stat2)
484 SELECT 'activity', $nextmidnight AS timeend, courseid, $guestrole AS roleid,
485 SUM(statsreads), SUM(statswrites)
488 SELECT sud.courseid, sud.statsreads, sud.statswrites
489 FROM {temp_stats_user_daily} sud
490 WHERE sud.timeend = $nextmidnight
491 AND sud.courseid <> ".SITEID."
492 AND sud.stattype='activity'
493 AND (sud.userid = $guest OR sud.userid NOT IN (
496 FROM {temp_enroled} te
497 WHERE te.courseid = sud.courseid
502 HAVING SUM(statsreads) > 0 OR SUM(statswrites) > 0";
504 if ($logspresent && !stats_run_query($sql, array())) {
508 stats_progress('13');
511 /// How many view actions for each role on frontpage - excluding guests, not-logged-in and default frontpage role
512 $sql = "INSERT INTO {temp_stats_daily} (stattype, timeend, courseid, roleid, stat1, stat2)
514 SELECT 'activity', $nextmidnight AS timeend, courseid, roleid,
515 SUM(statsreads), SUM(statswrites)
517 SELECT pl.courseid, pl.roleid, sud.statsreads, sud.statswrites
518 FROM {temp_stats_user_daily} sud, (
520 SELECT DISTINCT ra.userid, ra.roleid, c.instanceid AS courseid
521 FROM {role_assignments} ra
522 JOIN {context} c ON c.id = ra.contextid
523 WHERE ra.contextid = :fpcontext
524 AND ra.roleid <> $defaultfproleid
525 AND ra.roleid <> $guestrole
526 AND ra.userid <> $guest
528 WHERE sud.userid = pl.userid
529 AND sud.courseid = pl.courseid
530 AND sud.timeend = $nextmidnight
531 AND sud.stattype='activity'
534 GROUP BY courseid, roleid
535 HAVING SUM(statsreads) > 0 OR SUM(statswrites) > 0";
537 if ($logspresent && !stats_run_query($sql, array('fpcontext'=>$fpcontext->id))) {
541 stats_progress('14');
544 // How many view actions for default frontpage role on frontpage only
545 $sql = "INSERT INTO {temp_stats_daily} (stattype, timeend, courseid, roleid, stat1, stat2)
547 SELECT 'activity', timeend, courseid, $defaultfproleid AS roleid,
548 SUM(statsreads), SUM(statswrites)
550 SELECT sud.timeend AS timeend, sud.courseid, sud.statsreads, sud.statswrites
551 FROM {temp_stats_user_daily} sud
552 WHERE sud.timeend = :nextm
553 AND sud.courseid = :siteid
554 AND sud.stattype='activity'
555 AND sud.userid <> $guest
557 AND sud.userid NOT IN (
560 FROM {role_assignments} ra
561 WHERE ra.roleid <> $guestrole
562 AND ra.roleid <> $defaultfproleid
563 AND ra.contextid = :fpcontext)
566 GROUP BY timeend, courseid
567 HAVING SUM(statsreads) > 0 OR SUM(statswrites) > 0";
569 if ($logspresent && !stats_run_query($sql, array('fpcontext'=>$fpcontext->id, 'siteid'=>SITEID, 'nextm'=>$nextmidnight))) {
573 $DB->update_temp_table_stats();
574 stats_progress('15');
576 // How many view actions for guests or not-logged-in on frontpage
577 $sql = "INSERT INTO {temp_stats_daily} (stattype, timeend, courseid, roleid, stat1, stat2)
579 SELECT stattype, timeend, courseid, $guestrole AS roleid,
580 SUM(statsreads) AS stat1, SUM(statswrites) AS stat2
582 SELECT sud.stattype, sud.timeend, sud.courseid,
583 sud.statsreads, sud.statswrites
584 FROM {temp_stats_user_daily} sud
585 WHERE (sud.userid = $guest OR sud.userid = 0)
586 AND sud.timeend = $nextmidnight
587 AND sud.courseid = ".SITEID."
588 AND sud.stattype='activity'
590 GROUP BY stattype, timeend, courseid
591 HAVING SUM(statsreads) > 0 OR SUM(statswrites) > 0";
593 if ($logspresent && !stats_run_query($sql)) {
597 stats_progress('16');
599 stats_temp_table_clean();
601 stats_progress('out');
603 // remember processed days
604 set_config('statslastdaily', $nextmidnight);
605 $elapsed = time()-$daystart;
606 mtrace(" finished until $nextmidnight: ".userdate($nextmidnight)." (in $elapsed s)");
609 $timestart = $nextmidnight;
610 $nextmidnight = stats_get_next_day_start($nextmidnight);
613 stats_temp_table_drop();
615 set_cron_lock('statsrunning', null);
619 mtrace("...error occurred, completed $days days of statistics in {$total} s.");
622 } else if ($timeout) {
623 mtrace("...stopping early, reached maximum number of $maxdays days ({$total} s) - will continue next time.");
627 mtrace("...completed $days days of statistics in {$total} s.");
634 * Execute weekly statistics gathering
635 * @return boolean success
637 function stats_cron_weekly() {
639 require_once($CFG->libdir.'/adminlib.php');
643 // read last execution date from db
644 if (!$timestart = get_config(NULL, 'statslastweekly')) {
645 $timestart = stats_get_base_daily(stats_get_start_from('weekly'));
646 set_config('statslastweekly', $timestart);
649 $nextstartweek = stats_get_next_week_start($timestart);
651 // are there any weeks that need to be processed?
652 if ($now < $nextstartweek) {
653 return true; // everything ok and up-to-date
656 $timeout = empty($CFG->statsmaxruntime) ? 60*60*24 : $CFG->statsmaxruntime;
658 if (!set_cron_lock('statsrunning', $now + $timeout)) {
662 // fisrt delete entries that should not be there yet
663 $DB->delete_records_select('stats_weekly', "timeend > $timestart");
664 $DB->delete_records_select('stats_user_weekly', "timeend > $timestart");
666 mtrace("Running weekly statistics gathering, starting at $timestart:");
667 cron_trace_time_and_memory();
670 while ($now > $nextstartweek) {
671 core_php_time_limit::raise($timeout - 200);
676 set_cron_lock('statsrunning', time() + $timeout, true);
679 $stattimesql = "timeend > $timestart AND timeend <= $nextstartweek";
682 stats_progress('init');
684 /// process login info first
685 $sql = "INSERT INTO {stats_user_weekly} (stattype, timeend, courseid, userid, statsreads)
687 SELECT 'logins', timeend, courseid, userid, SUM(statsreads)
689 SELECT $nextstartweek AS timeend, courseid, userid, statsreads
690 FROM {stats_user_daily} sd
691 WHERE stattype = 'logins' AND $stattimesql
693 GROUP BY timeend, courseid, userid
694 HAVING SUM(statsreads) > 0";
700 $sql = "INSERT INTO {stats_weekly} (stattype, timeend, courseid, roleid, stat1, stat2)
702 SELECT 'logins' AS stattype, $nextstartweek AS timeend, ".SITEID." as courseid, 0,
703 COALESCE((SELECT SUM(statsreads)
704 FROM {stats_user_weekly} s1
705 WHERE s1.stattype = 'logins' AND timeend = $nextstartweek), 0) AS nstat1,
707 FROM {stats_user_weekly} s2
708 WHERE s2.stattype = 'logins' AND timeend = $nextstartweek) AS nstat2" .
709 $DB->sql_null_from_clause();
715 /// now enrolments averages
716 $sql = "INSERT INTO {stats_weekly} (stattype, timeend, courseid, roleid, stat1, stat2)
718 SELECT 'enrolments', ntimeend, courseid, roleid, " . $DB->sql_ceil('AVG(stat1)') . ", " . $DB->sql_ceil('AVG(stat2)') . "
720 SELECT $nextstartweek AS ntimeend, courseid, roleid, stat1, stat2
721 FROM {stats_daily} sd
722 WHERE stattype = 'enrolments' AND $stattimesql
724 GROUP BY ntimeend, courseid, roleid";
730 /// activity read/write averages
731 $sql = "INSERT INTO {stats_weekly} (stattype, timeend, courseid, roleid, stat1, stat2)
733 SELECT 'activity', ntimeend, courseid, roleid, SUM(stat1), SUM(stat2)
735 SELECT $nextstartweek AS ntimeend, courseid, roleid, stat1, stat2
737 WHERE stattype = 'activity' AND $stattimesql
739 GROUP BY ntimeend, courseid, roleid";
745 /// user read/write averages
746 $sql = "INSERT INTO {stats_user_weekly} (stattype, timeend, courseid, userid, statsreads, statswrites)
748 SELECT 'activity', ntimeend, courseid, userid, SUM(statsreads), SUM(statswrites)
750 SELECT $nextstartweek AS ntimeend, courseid, userid, statsreads, statswrites
751 FROM {stats_user_daily}
752 WHERE stattype = 'activity' AND $stattimesql
754 GROUP BY ntimeend, courseid, userid";
760 set_config('statslastweekly', $nextstartweek);
761 $elapsed = time()-$weekstart;
762 mtrace(" finished until $nextstartweek: ".userdate($nextstartweek) ." (in $elapsed s)");
764 $timestart = $nextstartweek;
765 $nextstartweek = stats_get_next_week_start($nextstartweek);
768 set_cron_lock('statsrunning', null);
769 mtrace("...completed $weeks weeks of statistics.");
774 * Execute monthly statistics gathering
775 * @return boolean success
777 function stats_cron_monthly() {
779 require_once($CFG->libdir.'/adminlib.php');
783 // read last execution date from db
784 if (!$timestart = get_config(NULL, 'statslastmonthly')) {
785 $timestart = stats_get_base_monthly(stats_get_start_from('monthly'));
786 set_config('statslastmonthly', $timestart);
789 $nextstartmonth = stats_get_next_month_start($timestart);
791 // are there any months that need to be processed?
792 if ($now < $nextstartmonth) {
793 return true; // everything ok and up-to-date
796 $timeout = empty($CFG->statsmaxruntime) ? 60*60*24 : $CFG->statsmaxruntime;
798 if (!set_cron_lock('statsrunning', $now + $timeout)) {
802 // fisr delete entries that should not be there yet
803 $DB->delete_records_select('stats_monthly', "timeend > $timestart");
804 $DB->delete_records_select('stats_user_monthly', "timeend > $timestart");
806 $startmonth = stats_get_base_monthly($now);
809 mtrace("Running monthly statistics gathering, starting at $timestart:");
810 cron_trace_time_and_memory();
813 while ($now > $nextstartmonth) {
814 core_php_time_limit::raise($timeout - 200);
819 set_cron_lock('statsrunning', time() + $timeout, true);
822 $stattimesql = "timeend > $timestart AND timeend <= $nextstartmonth";
824 $monthstart = time();
825 stats_progress('init');
827 /// process login info first
828 $sql = "INSERT INTO {stats_user_monthly} (stattype, timeend, courseid, userid, statsreads)
830 SELECT 'logins', timeend, courseid, userid, SUM(statsreads)
832 SELECT $nextstartmonth AS timeend, courseid, userid, statsreads
833 FROM {stats_user_daily} sd
834 WHERE stattype = 'logins' AND $stattimesql
836 GROUP BY timeend, courseid, userid
837 HAVING SUM(statsreads) > 0";
843 $sql = "INSERT INTO {stats_monthly} (stattype, timeend, courseid, roleid, stat1, stat2)
845 SELECT 'logins' AS stattype, $nextstartmonth AS timeend, ".SITEID." as courseid, 0,
846 COALESCE((SELECT SUM(statsreads)
847 FROM {stats_user_monthly} s1
848 WHERE s1.stattype = 'logins' AND timeend = $nextstartmonth), 0) AS nstat1,
850 FROM {stats_user_monthly} s2
851 WHERE s2.stattype = 'logins' AND timeend = $nextstartmonth) AS nstat2" .
852 $DB->sql_null_from_clause();
858 /// now enrolments averages
859 $sql = "INSERT INTO {stats_monthly} (stattype, timeend, courseid, roleid, stat1, stat2)
861 SELECT 'enrolments', ntimeend, courseid, roleid, " . $DB->sql_ceil('AVG(stat1)') . ", " . $DB->sql_ceil('AVG(stat2)') . "
863 SELECT $nextstartmonth AS ntimeend, courseid, roleid, stat1, stat2
864 FROM {stats_daily} sd
865 WHERE stattype = 'enrolments' AND $stattimesql
867 GROUP BY ntimeend, courseid, roleid";
873 /// activity read/write averages
874 $sql = "INSERT INTO {stats_monthly} (stattype, timeend, courseid, roleid, stat1, stat2)
876 SELECT 'activity', ntimeend, courseid, roleid, SUM(stat1), SUM(stat2)
878 SELECT $nextstartmonth AS ntimeend, courseid, roleid, stat1, stat2
880 WHERE stattype = 'activity' AND $stattimesql
882 GROUP BY ntimeend, courseid, roleid";
888 /// user read/write averages
889 $sql = "INSERT INTO {stats_user_monthly} (stattype, timeend, courseid, userid, statsreads, statswrites)
891 SELECT 'activity', ntimeend, courseid, userid, SUM(statsreads), SUM(statswrites)
893 SELECT $nextstartmonth AS ntimeend, courseid, userid, statsreads, statswrites
894 FROM {stats_user_daily}
895 WHERE stattype = 'activity' AND $stattimesql
897 GROUP BY ntimeend, courseid, userid";
903 set_config('statslastmonthly', $nextstartmonth);
904 $elapsed = time() - $monthstart;
905 mtrace(" finished until $nextstartmonth: ".userdate($nextstartmonth) ." (in $elapsed s)");
907 $timestart = $nextstartmonth;
908 $nextstartmonth = stats_get_next_month_start($nextstartmonth);
911 set_cron_lock('statsrunning', null);
912 mtrace("...completed $months months of statistics.");
917 * Return starting date of stats processing
918 * @param string $str name of table - daily, weekly or monthly
919 * @return int timestamp
921 function stats_get_start_from($str) {
924 // are there any data in stats table? Should not be...
925 if ($timeend = $DB->get_field_sql('SELECT MAX(timeend) FROM {stats_'.$str.'}')) {
928 // decide what to do based on our config setting (either all or none or a timestamp)
929 switch ($CFG->statsfirstrun) {
931 $manager = get_log_manager();
932 $stores = $manager->get_readers();
934 foreach ($stores as $store) {
935 if ($store instanceof \core\log\sql_internal_table_reader) {
936 $logtable = $store->get_internal_log_table_name();
940 $first = $DB->get_field_sql("SELECT MIN(timecreated) FROM {{$logtable}}");
941 if ($first and (!$firstlog or $firstlog > $first)) {
947 $first = $DB->get_field_sql('SELECT MIN(time) FROM {log}');
948 if ($first and (!$firstlog or $firstlog > $first)) {
957 if (is_numeric($CFG->statsfirstrun)) {
958 return time() - $CFG->statsfirstrun;
960 // not a number? use next instead
962 return strtotime('-3 day', time());
968 * @param int $time timestamp
969 * @return int start of day
971 function stats_get_base_daily($time=0) {
976 core_date::set_default_server_timezone();
977 $time = strtotime(date('d-M-Y', $time));
984 * @param int $time timestamp
985 * @return int start of week
987 function stats_get_base_weekly($time=0) {
990 $time = stats_get_base_daily($time);
991 $startday = $CFG->calendar_startwday;
993 core_date::set_default_server_timezone();
994 $thisday = date('w', $time);
996 if ($thisday > $startday) {
997 $time = $time - (($thisday - $startday) * 60*60*24);
998 } else if ($thisday < $startday) {
999 $time = $time - ((7 + $thisday - $startday) * 60*60*24);
1006 * @param int $time timestamp
1007 * @return int start of month
1009 function stats_get_base_monthly($time=0) {
1014 core_date::set_default_server_timezone();
1015 $return = strtotime(date('1-M-Y', $time));
1022 * @param int $time timestamp
1023 * @return start of next day
1025 function stats_get_next_day_start($time) {
1026 $next = stats_get_base_daily($time);
1027 $nextdate = new DateTime();
1028 $nextdate->setTimestamp($next);
1029 $nextdate->add(new DateInterval('P1D'));
1030 return $nextdate->getTimestamp();
1034 * Start of next week
1035 * @param int $time timestamp
1036 * @return start of next week
1038 function stats_get_next_week_start($time) {
1039 $next = stats_get_base_weekly($time);
1040 $nextdate = new DateTime();
1041 $nextdate->setTimestamp($next);
1042 $nextdate->add(new DateInterval('P1W'));
1043 return $nextdate->getTimestamp();
1047 * Start of next month
1048 * @param int $time timestamp
1049 * @return start of next month
1051 function stats_get_next_month_start($time) {
1052 $next = stats_get_base_monthly($time);
1053 $nextdate = new DateTime();
1054 $nextdate->setTimestamp($next);
1055 $nextdate->add(new DateInterval('P1M'));
1056 return $nextdate->getTimestamp();
1060 * Remove old stats data
1062 function stats_clean_old() {
1064 mtrace("Running stats cleanup tasks...");
1065 cron_trace_time_and_memory();
1066 $deletebefore = stats_get_base_monthly();
1068 // delete dailies older than 3 months (to be safe)
1069 $deletebefore = strtotime('-3 months', $deletebefore);
1070 $DB->delete_records_select('stats_daily', "timeend < $deletebefore");
1071 $DB->delete_records_select('stats_user_daily', "timeend < $deletebefore");
1073 // delete weeklies older than 9 months (to be safe)
1074 $deletebefore = strtotime('-6 months', $deletebefore);
1075 $DB->delete_records_select('stats_weekly', "timeend < $deletebefore");
1076 $DB->delete_records_select('stats_user_weekly', "timeend < $deletebefore");
1078 // don't delete monthlies
1080 mtrace("...stats cleanup finished");
1083 function stats_get_parameters($time,$report,$courseid,$mode,$roleid=0) {
1086 $param = new stdClass();
1087 $param->params = array();
1089 if ($time < 10) { // dailies
1090 // number of days to go back = 7* time
1091 $param->table = 'daily';
1092 $param->timeafter = strtotime("-".($time*7)." days",stats_get_base_daily());
1093 } elseif ($time < 20) { // weeklies
1094 // number of weeks to go back = time - 10 * 4 (weeks) + base week
1095 $param->table = 'weekly';
1096 $param->timeafter = strtotime("-".(($time - 10)*4)." weeks",stats_get_base_weekly());
1097 } else { // monthlies.
1098 // number of months to go back = time - 20 * months + base month
1099 $param->table = 'monthly';
1100 $param->timeafter = strtotime("-".($time - 20)." months",stats_get_base_monthly());
1103 $param->extras = '';
1106 // ******************** STATS_MODE_GENERAL ******************** //
1107 case STATS_REPORT_LOGINS:
1108 $param->fields = 'timeend,sum(stat1) as line1,sum(stat2) as line2';
1109 $param->fieldscomplete = true;
1110 $param->stattype = 'logins';
1111 $param->line1 = get_string('statslogins');
1112 $param->line2 = get_string('statsuniquelogins');
1113 if ($courseid == SITEID) {
1114 $param->extras = 'GROUP BY timeend';
1118 case STATS_REPORT_READS:
1119 $param->fields = $DB->sql_concat('timeend','roleid').' AS uniqueid, timeend, roleid, stat1 as line1';
1120 $param->fieldscomplete = true; // set this to true to avoid anything adding stuff to the list and breaking complex queries.
1121 $param->aggregategroupby = 'roleid';
1122 $param->stattype = 'activity';
1123 $param->crosstab = true;
1124 $param->extras = 'GROUP BY timeend,roleid,stat1';
1125 if ($courseid == SITEID) {
1126 $param->fields = $DB->sql_concat('timeend','roleid').' AS uniqueid, timeend, roleid, sum(stat1) as line1';
1127 $param->extras = 'GROUP BY timeend,roleid';
1131 case STATS_REPORT_WRITES:
1132 $param->fields = $DB->sql_concat('timeend','roleid').' AS uniqueid, timeend, roleid, stat2 as line1';
1133 $param->fieldscomplete = true; // set this to true to avoid anything adding stuff to the list and breaking complex queries.
1134 $param->aggregategroupby = 'roleid';
1135 $param->stattype = 'activity';
1136 $param->crosstab = true;
1137 $param->extras = 'GROUP BY timeend,roleid,stat2';
1138 if ($courseid == SITEID) {
1139 $param->fields = $DB->sql_concat('timeend','roleid').' AS uniqueid, timeend, roleid, sum(stat2) as line1';
1140 $param->extras = 'GROUP BY timeend,roleid';
1144 case STATS_REPORT_ACTIVITY:
1145 $param->fields = $DB->sql_concat('timeend','roleid').' AS uniqueid, timeend, roleid, sum(stat1+stat2) as line1';
1146 $param->fieldscomplete = true; // set this to true to avoid anything adding stuff to the list and breaking complex queries.
1147 $param->aggregategroupby = 'roleid';
1148 $param->stattype = 'activity';
1149 $param->crosstab = true;
1150 $param->extras = 'GROUP BY timeend,roleid';
1151 if ($courseid == SITEID) {
1152 $param->extras = 'GROUP BY timeend,roleid';
1156 case STATS_REPORT_ACTIVITYBYROLE;
1157 $param->fields = 'stat1 AS line1, stat2 AS line2';
1158 $param->stattype = 'activity';
1159 $role = $DB->get_record('role', array('id' => $roleid));
1160 $rolename = role_get_name($role, context_course::instance($courseid));
1161 $param->line1 = $rolename . get_string('statsreads');
1162 $param->line2 = $rolename . get_string('statswrites');
1163 if ($courseid == SITEID) {
1164 $param->extras = 'GROUP BY timeend';
1168 // ******************** STATS_MODE_DETAILED ******************** //
1169 case STATS_REPORT_USER_ACTIVITY:
1170 $param->fields = 'statsreads as line1, statswrites as line2';
1171 $param->line1 = get_string('statsuserreads');
1172 $param->line2 = get_string('statsuserwrites');
1173 $param->stattype = 'activity';
1176 case STATS_REPORT_USER_ALLACTIVITY:
1177 $param->fields = 'statsreads+statswrites as line1';
1178 $param->line1 = get_string('statsuseractivity');
1179 $param->stattype = 'activity';
1182 case STATS_REPORT_USER_LOGINS:
1183 $param->fields = 'statsreads as line1';
1184 $param->line1 = get_string('statsuserlogins');
1185 $param->stattype = 'logins';
1188 case STATS_REPORT_USER_VIEW:
1189 $param->fields = 'statsreads as line1, statswrites as line2, statsreads+statswrites as line3';
1190 $param->line1 = get_string('statsuserreads');
1191 $param->line2 = get_string('statsuserwrites');
1192 $param->line3 = get_string('statsuseractivity');
1193 $param->stattype = 'activity';
1196 // ******************** STATS_MODE_RANKED ******************** //
1197 case STATS_REPORT_ACTIVE_COURSES:
1198 $param->fields = 'sum(stat1+stat2) AS line1';
1199 $param->stattype = 'activity';
1200 $param->orderby = 'line1 DESC';
1201 $param->line1 = get_string('useractivity');
1202 $param->graphline = 'line1';
1205 case STATS_REPORT_ACTIVE_COURSES_WEIGHTED:
1207 if (!empty($CFG->statsuserthreshold) && is_numeric($CFG->statsuserthreshold)) {
1208 $threshold = $CFG->statsuserthreshold;
1210 $param->fields = '';
1211 $param->sql = 'SELECT activity.courseid, activity.all_activity AS line1, enrolments.highest_enrolments AS line2,
1212 activity.all_activity / enrolments.highest_enrolments as line3
1214 SELECT courseid, sum(stat1+stat2) AS all_activity
1215 FROM {stats_'.$param->table.'}
1216 WHERE stattype=\'activity\' AND timeend >= '.(int)$param->timeafter.' AND roleid = 0 GROUP BY courseid
1220 SELECT courseid, max(stat1) AS highest_enrolments
1221 FROM {stats_'.$param->table.'}
1222 WHERE stattype=\'enrolments\' AND timeend >= '.(int)$param->timeafter.' AND stat1 > '.(int)$threshold.'
1225 ON (activity.courseid = enrolments.courseid)
1226 ORDER BY line3 DESC';
1227 $param->line1 = get_string('useractivity');
1228 $param->line2 = get_string('users');
1229 $param->line3 = get_string('activityweighted');
1230 $param->graphline = 'line3';
1233 case STATS_REPORT_PARTICIPATORY_COURSES:
1235 if (!empty($CFG->statsuserthreshold) && is_numeric($CFG->statsuserthreshold)) {
1236 $threshold = $CFG->statsuserthreshold;
1238 $param->fields = '';
1239 $param->sql = 'SELECT courseid, ' . $DB->sql_ceil('avg(all_enrolments)') . ' as line1, ' .
1240 $DB->sql_ceil('avg(active_enrolments)') . ' as line2, avg(proportion_active) AS line3
1242 SELECT courseid, timeend, stat2 as active_enrolments,
1243 stat1 as all_enrolments, '.$DB->sql_cast_char2real('stat2').'/'.$DB->sql_cast_char2real('stat1').' AS proportion_active
1244 FROM {stats_'.$param->table.'}
1245 WHERE stattype=\'enrolments\' AND roleid = 0 AND stat1 > '.(int)$threshold.'
1247 WHERE timeend >= '.(int)$param->timeafter.'
1249 ORDER BY line3 DESC';
1251 $param->line1 = get_string('users');
1252 $param->line2 = get_string('activeusers');
1253 $param->line3 = get_string('participationratio');
1254 $param->graphline = 'line3';
1257 case STATS_REPORT_PARTICIPATORY_COURSES_RW:
1258 $param->fields = '';
1259 $param->sql = 'SELECT courseid, sum(views) AS line1, sum(posts) AS line2,
1260 avg(proportion_active) AS line3
1262 SELECT courseid, timeend, stat1 as views, stat2 AS posts,
1263 '.$DB->sql_cast_char2real('stat2').'/'.$DB->sql_cast_char2real('stat1').' as proportion_active
1264 FROM {stats_'.$param->table.'}
1265 WHERE stattype=\'activity\' AND roleid = 0 AND stat1 > 0
1267 WHERE timeend >= '.(int)$param->timeafter.'
1269 ORDER BY line3 DESC';
1270 $param->line1 = get_string('views');
1271 $param->line2 = get_string('posts');
1272 $param->line3 = get_string('participationratio');
1273 $param->graphline = 'line3';
1278 if ($courseid == SITEID && $mode != STATS_MODE_RANKED) { // just aggregate all courses.
1279 $param->fields = preg_replace('/(?:sum)([a-zA-Z0-9+_]*)\W+as\W+([a-zA-Z0-9_]*)/i','sum($1) as $2',$param->fields);
1280 $param->extras = ' GROUP BY timeend'.((!empty($param->aggregategroupby)) ? ','.$param->aggregategroupby : '');
1283 //TODO must add the SITEID reports to the rest of the reports.
1287 function stats_get_view_actions() {
1288 return array('view','view all','history');
1291 function stats_get_post_actions() {
1292 return array('add','delete','edit','add mod','delete mod','edit section'.'enrol','loginas','new','unenrol','update','update mod');
1295 function stats_get_action_names($str) {
1298 $mods = $DB->get_records('modules');
1299 $function = 'stats_get_'.$str.'_actions';
1300 $actions = $function();
1301 foreach ($mods as $mod) {
1302 $file = $CFG->dirroot.'/mod/'.$mod->name.'/lib.php';
1303 if (!is_readable($file)) {
1306 require_once($file);
1307 $function = $mod->name.'_get_'.$str.'_actions';
1308 if (function_exists($function)) {
1309 $mod_actions = $function();
1310 if (is_array($mod_actions)) {
1311 $actions = array_merge($actions, $mod_actions);
1316 // The array_values() forces a stack-like array
1317 // so we can later loop over safely...
1318 $actions = array_values(array_unique($actions));
1319 $c = count($actions);
1320 for ($n=0;$n<$c;$n++) {
1321 $actions[$n] = $actions[$n];
1326 function stats_get_time_options($now,$lastweekend,$lastmonthend,$earliestday,$earliestweek,$earliestmonth) {
1328 $now = stats_get_base_daily(time());
1329 // it's really important that it's TIMEEND in the table. ie, tuesday 00:00:00 is monday night.
1330 // so we need to take a day off here (essentially add a day to $now
1333 $timeoptions = array();
1335 if ($now - (60*60*24*7) >= $earliestday) {
1336 $timeoptions[STATS_TIME_LASTWEEK] = get_string('numweeks','moodle',1);
1338 if ($now - (60*60*24*14) >= $earliestday) {
1339 $timeoptions[STATS_TIME_LAST2WEEKS] = get_string('numweeks','moodle',2);
1341 if ($now - (60*60*24*21) >= $earliestday) {
1342 $timeoptions[STATS_TIME_LAST3WEEKS] = get_string('numweeks','moodle',3);
1344 if ($now - (60*60*24*28) >= $earliestday) {
1345 $timeoptions[STATS_TIME_LAST4WEEKS] = get_string('numweeks','moodle',4);// show dailies up to (including) here.
1347 if ($lastweekend - (60*60*24*56) >= $earliestweek) {
1348 $timeoptions[STATS_TIME_LAST2MONTHS] = get_string('nummonths','moodle',2);
1350 if ($lastweekend - (60*60*24*84) >= $earliestweek) {
1351 $timeoptions[STATS_TIME_LAST3MONTHS] = get_string('nummonths','moodle',3);
1353 if ($lastweekend - (60*60*24*112) >= $earliestweek) {
1354 $timeoptions[STATS_TIME_LAST4MONTHS] = get_string('nummonths','moodle',4);
1356 if ($lastweekend - (60*60*24*140) >= $earliestweek) {
1357 $timeoptions[STATS_TIME_LAST5MONTHS] = get_string('nummonths','moodle',5);
1359 if ($lastweekend - (60*60*24*168) >= $earliestweek) {
1360 $timeoptions[STATS_TIME_LAST6MONTHS] = get_string('nummonths','moodle',6); // show weeklies up to (including) here
1362 if (strtotime('-7 months',$lastmonthend) >= $earliestmonth) {
1363 $timeoptions[STATS_TIME_LAST7MONTHS] = get_string('nummonths','moodle',7);
1365 if (strtotime('-8 months',$lastmonthend) >= $earliestmonth) {
1366 $timeoptions[STATS_TIME_LAST8MONTHS] = get_string('nummonths','moodle',8);
1368 if (strtotime('-9 months',$lastmonthend) >= $earliestmonth) {
1369 $timeoptions[STATS_TIME_LAST9MONTHS] = get_string('nummonths','moodle',9);
1371 if (strtotime('-10 months',$lastmonthend) >= $earliestmonth) {
1372 $timeoptions[STATS_TIME_LAST10MONTHS] = get_string('nummonths','moodle',10);
1374 if (strtotime('-11 months',$lastmonthend) >= $earliestmonth) {
1375 $timeoptions[STATS_TIME_LAST11MONTHS] = get_string('nummonths','moodle',11);
1377 if (strtotime('-1 year',$lastmonthend) >= $earliestmonth) {
1378 $timeoptions[STATS_TIME_LASTYEAR] = get_string('lastyear');
1381 $years = (int)date('y', $now) - (int)date('y', $earliestmonth);
1383 for($i = 2; $i <= $years; $i++) {
1384 $timeoptions[$i*12+20] = get_string('numyears', 'moodle', $i);
1388 return $timeoptions;
1391 function stats_get_report_options($courseid,$mode) {
1394 $reportoptions = array();
1397 case STATS_MODE_GENERAL:
1398 $reportoptions[STATS_REPORT_ACTIVITY] = get_string('statsreport'.STATS_REPORT_ACTIVITY);
1399 if ($courseid != SITEID && $context = context_course::instance($courseid)) {
1400 $sql = 'SELECT r.id, r.name FROM {role} r JOIN {stats_daily} s ON s.roleid = r.id WHERE s.courseid = :courseid GROUP BY r.id, r.name';
1401 if ($roles = $DB->get_records_sql($sql, array('courseid' => $courseid))) {
1402 foreach ($roles as $role) {
1403 $reportoptions[STATS_REPORT_ACTIVITYBYROLE.$role->id] = get_string('statsreport'.STATS_REPORT_ACTIVITYBYROLE).
1404 ' ' . format_string($role->name, true, ['context' => $context]);
1408 $reportoptions[STATS_REPORT_READS] = get_string('statsreport'.STATS_REPORT_READS);
1409 $reportoptions[STATS_REPORT_WRITES] = get_string('statsreport'.STATS_REPORT_WRITES);
1410 if ($courseid == SITEID) {
1411 $reportoptions[STATS_REPORT_LOGINS] = get_string('statsreport'.STATS_REPORT_LOGINS);
1415 case STATS_MODE_DETAILED:
1416 $reportoptions[STATS_REPORT_USER_ACTIVITY] = get_string('statsreport'.STATS_REPORT_USER_ACTIVITY);
1417 $reportoptions[STATS_REPORT_USER_ALLACTIVITY] = get_string('statsreport'.STATS_REPORT_USER_ALLACTIVITY);
1418 if (has_capability('report/stats:view', context_system::instance())) {
1420 $reportoptions[STATS_REPORT_USER_LOGINS] = get_string('statsreport'.STATS_REPORT_USER_LOGINS);
1423 case STATS_MODE_RANKED:
1424 if (has_capability('report/stats:view', context_system::instance())) {
1425 $reportoptions[STATS_REPORT_ACTIVE_COURSES] = get_string('statsreport'.STATS_REPORT_ACTIVE_COURSES);
1426 $reportoptions[STATS_REPORT_ACTIVE_COURSES_WEIGHTED] = get_string('statsreport'.STATS_REPORT_ACTIVE_COURSES_WEIGHTED);
1427 $reportoptions[STATS_REPORT_PARTICIPATORY_COURSES] = get_string('statsreport'.STATS_REPORT_PARTICIPATORY_COURSES);
1428 $reportoptions[STATS_REPORT_PARTICIPATORY_COURSES_RW] = get_string('statsreport'.STATS_REPORT_PARTICIPATORY_COURSES_RW);
1433 return $reportoptions;
1437 * Fix missing entries in the statistics.
1439 * This creates a dummy stat when nothing happened during a day/week/month.
1441 * @param array $stats array of statistics.
1442 * @param int $timeafter unused.
1443 * @param string $timestr type of statistics to generate (dayly, weekly, monthly).
1444 * @param boolean $line2
1445 * @param boolean $line3
1446 * @return array of fixed statistics.
1448 function stats_fix_zeros($stats,$timeafter,$timestr,$line2=true,$line3=false) {
1450 if (empty($stats)) {
1454 $timestr = str_replace('user_','',$timestr); // just in case.
1456 // Gets the current user base time.
1457 $fun = 'stats_get_base_'.$timestr;
1460 // Extract the ending time of the statistics.
1461 $actualtimes = array();
1462 $actualtimeshour = null;
1463 foreach ($stats as $statid => $s) {
1464 // Normalise the month date to the 1st if for any reason it's set to later. But we ignore
1465 // anything above or equal to 29 because sometimes we get the end of the month. Also, we will
1466 // set the hours of the result to all of them, that way we prevent DST differences.
1467 if ($timestr == 'monthly') {
1468 $day = date('d', $s->timeend);
1469 if (date('d', $s->timeend) > 1 && date('d', $s->timeend) < 29) {
1472 if (is_null($actualtimeshour)) {
1473 $actualtimeshour = date('H', $s->timeend);
1475 $s->timeend = mktime($actualtimeshour, 0, 0, date('m', $s->timeend), $day, date('Y', $s->timeend));
1477 $stats[$statid] = $s;
1478 $actualtimes[] = $s->timeend;
1481 $actualtimesvalues = array_values($actualtimes);
1482 $timeafter = array_pop($actualtimesvalues);
1484 // Generate a base timestamp for each possible month/week/day.
1486 while ($timeafter < $now) {
1487 $times[] = $timeafter;
1488 if ($timestr == 'daily') {
1489 $timeafter = stats_get_next_day_start($timeafter);
1490 } else if ($timestr == 'weekly') {
1491 $timeafter = stats_get_next_week_start($timeafter);
1492 } else if ($timestr == 'monthly') {
1493 // We can't just simply +1 month because the 31st Jan + 1 month = 2nd of March.
1494 $year = date('Y', $timeafter);
1495 $month = date('m', $timeafter);
1496 $day = date('d', $timeafter);
1497 $dayofnextmonth = $day;
1499 $daysinmonth = date('n', mktime(0, 0, 0, $month+1, 1, $year));
1500 if ($day > $daysinmonth) {
1501 $dayofnextmonth = $daysinmonth;
1504 $timeafter = mktime($actualtimeshour, 0, 0, $month+1, $dayofnextmonth, $year);
1506 // This will put us in a never ending loop.
1511 // Add the base timestamp to the statistics if not present.
1512 foreach ($times as $count => $time) {
1513 if (!in_array($time,$actualtimes) && $count != count($times) -1) {
1514 $newobj = new StdClass;
1515 $newobj->timeend = $time;
1517 $newobj->roleid = 0;
1519 if (!empty($line2)) {
1522 if (!empty($line3)) {
1525 $newobj->zerofixed = true;
1530 usort($stats,"stats_compare_times");
1534 // helper function to sort arrays by $obj->timeend
1535 function stats_compare_times($a,$b) {
1536 if ($a->timeend == $b->timeend) {
1539 return ($a->timeend > $b->timeend) ? -1 : 1;
1542 function stats_check_uptodate($courseid=0) {
1545 if (empty($courseid)) {
1549 $latestday = stats_get_start_from('daily');
1551 if ((time() - 60*60*24*2) < $latestday) { // we're ok
1555 $a = new stdClass();
1556 $a->daysdone = $DB->get_field_sql("SELECT COUNT(DISTINCT(timeend)) FROM {stats_daily}");
1558 // how many days between the last day and now?
1559 $a->dayspending = ceil((stats_get_base_daily() - $latestday)/(60*60*24));
1561 if ($a->dayspending == 0 && $a->daysdone != 0) {
1562 return NULL; // we've only just started...
1565 //return error as string
1566 return get_string('statscatchupmode','error',$a);
1570 * Create temporary tables to speed up log generation
1572 function stats_temp_table_create() {
1575 $dbman = $DB->get_manager(); // We are going to use database_manager services
1577 stats_temp_table_drop();
1581 /// Define tables user to be created
1582 $table = new xmldb_table('temp_stats_daily');
1583 $table->add_field('id', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, XMLDB_SEQUENCE, null);
1584 $table->add_field('courseid', XMLDB_TYPE_INTEGER, 10, null, XMLDB_NOTNULL, null, '0');
1585 $table->add_field('timeend', XMLDB_TYPE_INTEGER, 10, null, XMLDB_NOTNULL, null, '0');
1586 $table->add_field('roleid', XMLDB_TYPE_INTEGER, 10, null, XMLDB_NOTNULL, null, '0');
1587 $table->add_field('stattype', XMLDB_TYPE_CHAR, 20, null, XMLDB_NOTNULL, null, 'activity');
1588 $table->add_field('stat1', XMLDB_TYPE_INTEGER, 10, null, XMLDB_NOTNULL, null, '0');
1589 $table->add_field('stat2', XMLDB_TYPE_INTEGER, 10, null, XMLDB_NOTNULL, null, '0');
1590 $table->add_key('primary', XMLDB_KEY_PRIMARY, array('id'));
1591 $table->add_index('courseid', XMLDB_INDEX_NOTUNIQUE, array('courseid'));
1592 $table->add_index('timeend', XMLDB_INDEX_NOTUNIQUE, array('timeend'));
1593 $table->add_index('roleid', XMLDB_INDEX_NOTUNIQUE, array('roleid'));
1594 $tables['temp_stats_daily'] = $table;
1596 $table = new xmldb_table('temp_stats_user_daily');
1597 $table->add_field('id', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, XMLDB_SEQUENCE, null);
1598 $table->add_field('courseid', XMLDB_TYPE_INTEGER, 10, null, XMLDB_NOTNULL, null, '0');
1599 $table->add_field('userid', XMLDB_TYPE_INTEGER, 10, null, XMLDB_NOTNULL, null, '0');
1600 $table->add_field('roleid', XMLDB_TYPE_INTEGER, 10, null, XMLDB_NOTNULL, null, '0');
1601 $table->add_field('timeend', XMLDB_TYPE_INTEGER, 10, null, XMLDB_NOTNULL, null, '0');
1602 $table->add_field('statsreads', XMLDB_TYPE_INTEGER, 10, null, XMLDB_NOTNULL, null, '0');
1603 $table->add_field('statswrites', XMLDB_TYPE_INTEGER, 10, null, XMLDB_NOTNULL, null, '0');
1604 $table->add_field('stattype', XMLDB_TYPE_CHAR, 30, null, XMLDB_NOTNULL, null, null);
1605 $table->add_key('primary', XMLDB_KEY_PRIMARY, array('id'));
1606 $table->add_index('courseid', XMLDB_INDEX_NOTUNIQUE, array('courseid'));
1607 $table->add_index('userid', XMLDB_INDEX_NOTUNIQUE, array('userid'));
1608 $table->add_index('timeend', XMLDB_INDEX_NOTUNIQUE, array('timeend'));
1609 $table->add_index('roleid', XMLDB_INDEX_NOTUNIQUE, array('roleid'));
1610 $tables['temp_stats_user_daily'] = $table;
1612 $table = new xmldb_table('temp_enroled');
1613 $table->add_field('id', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, XMLDB_SEQUENCE, null);
1614 $table->add_field('userid', XMLDB_TYPE_INTEGER, 10, null, XMLDB_NOTNULL, null, '0');
1615 $table->add_field('courseid', XMLDB_TYPE_INTEGER, 10, null, XMLDB_NOTNULL, null, '0');
1616 $table->add_field('roleid', XMLDB_TYPE_INTEGER, 10, null, XMLDB_NOTNULL, null, null);
1617 $table->add_key('primary', XMLDB_KEY_PRIMARY, array('id'));
1618 $table->add_index('userid', XMLDB_INDEX_NOTUNIQUE, array('userid'));
1619 $table->add_index('courseid', XMLDB_INDEX_NOTUNIQUE, array('courseid'));
1620 $table->add_index('roleid', XMLDB_INDEX_NOTUNIQUE, array('roleid'));
1621 $tables['temp_enroled'] = $table;
1624 $table = new xmldb_table('temp_log1');
1625 $table->add_field('id', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, XMLDB_SEQUENCE, null);
1626 $table->add_field('userid', XMLDB_TYPE_INTEGER, 10, null, XMLDB_NOTNULL, null, '0');
1627 $table->add_field('course', XMLDB_TYPE_INTEGER, 10, null, XMLDB_NOTNULL, null, '0');
1628 $table->add_field('action', XMLDB_TYPE_CHAR, 40, null, XMLDB_NOTNULL, null, null);
1629 $table->add_key('primary', XMLDB_KEY_PRIMARY, array('id'));
1630 $table->add_index('action', XMLDB_INDEX_NOTUNIQUE, array('action'));
1631 $table->add_index('course', XMLDB_INDEX_NOTUNIQUE, array('course'));
1632 $table->add_index('user', XMLDB_INDEX_NOTUNIQUE, array('userid'));
1633 $table->add_index('usercourseaction', XMLDB_INDEX_NOTUNIQUE, array('userid','course','action'));
1634 $tables['temp_log1'] = $table;
1636 /// temp_log2 is exactly the same as temp_log1.
1637 $tables['temp_log2'] = clone $tables['temp_log1'];
1638 $tables['temp_log2']->setName('temp_log2');
1642 foreach ($tables as $table) {
1643 $dbman->create_temp_table($table);
1646 } catch (Exception $e) {
1647 mtrace('Temporary table creation failed: '. $e->getMessage());
1655 * Deletes summary logs table for stats calculation
1657 function stats_temp_table_drop() {
1660 $dbman = $DB->get_manager();
1662 $tables = array('temp_log1', 'temp_log2', 'temp_stats_daily', 'temp_stats_user_daily', 'temp_enroled');
1664 foreach ($tables as $name) {
1666 if ($dbman->table_exists($name)) {
1667 $table = new xmldb_table($name);
1670 $dbman->drop_table($table);
1671 } catch (Exception $e) {
1672 mtrace("Error occured while dropping temporary tables!");
1679 * Fills the temporary stats tables with new data
1681 * This function is meant to be called once at the start of stats generation
1683 * @param int timestart timestamp of the start time of logs view
1684 * @param int timeend timestamp of the end time of logs view
1685 * @return bool success (true) or failure(false)
1687 function stats_temp_table_setup() {
1690 $sql = "INSERT INTO {temp_enroled} (userid, courseid, roleid)
1692 SELECT ue.userid, e.courseid, ra.roleid
1693 FROM {role_assignments} ra
1694 JOIN {context} c ON (c.id = ra.contextid AND c.contextlevel = :courselevel)
1695 JOIN {enrol} e ON e.courseid = c.instanceid
1696 JOIN {user_enrolments} ue ON (ue.enrolid = e.id AND ue.userid = ra.userid)";
1698 return stats_run_query($sql, array('courselevel' => CONTEXT_COURSE));
1702 * Fills the temporary stats tables with new data
1704 * This function is meant to be called to get a new day of data
1706 * @param int timestamp of the start time of logs view
1707 * @param int timestamp of the end time of logs view
1708 * @return bool success (true) or failure(false)
1710 function stats_temp_table_fill($timestart, $timeend) {
1713 // First decide from where we want the data.
1715 $params = array('timestart' => $timestart,
1716 'timeend' => $timeend,
1717 'participating' => \core\event\base::LEVEL_PARTICIPATING,
1718 'teaching' => \core\event\base::LEVEL_TEACHING,
1719 'loginevent1' => '\core\event\user_loggedin',
1720 'loginevent2' => '\core\event\user_loggedin',
1724 $manager = get_log_manager();
1725 $stores = $manager->get_readers();
1726 foreach ($stores as $store) {
1727 if ($store instanceof \core\log\sql_internal_table_reader) {
1728 $logtable = $store->get_internal_log_table_name();
1733 $sql = "SELECT COUNT('x')
1735 WHERE timecreated >= :timestart AND timecreated < :timeend";
1737 if (!$DB->get_field_sql($sql, $params)) {
1741 // Let's fake the old records using new log data.
1742 // We want only data relevant to educational process
1743 // done by real users.
1745 $sql = "INSERT INTO {temp_log1} (userid, course, action)
1749 WHEN courseid IS NULL THEN ".SITEID."
1750 WHEN courseid = 0 THEN ".SITEID."
1754 WHEN eventname = :loginevent1 THEN 'login'
1755 WHEN crud = 'r' THEN 'view'
1759 WHERE timecreated >= :timestart AND timecreated < :timeend
1760 AND (origin = 'web' OR origin = 'ws')
1761 AND (edulevel = :participating OR edulevel = :teaching OR eventname = :loginevent2)";
1763 $DB->execute($sql, $params);
1769 // Fallback to legacy data.
1770 $sql = "INSERT INTO {temp_log1} (userid, course, action)
1772 SELECT userid, course, action
1774 WHERE time >= :timestart AND time < :timeend";
1776 $DB->execute($sql, $params);
1779 $sql = 'INSERT INTO {temp_log2} (userid, course, action)
1781 SELECT userid, course, action FROM {temp_log1}';
1785 // We have just loaded all the temp tables, collect statistics for that.
1786 $DB->update_temp_table_stats();
1793 * Deletes summary logs table for stats calculation
1795 * @return bool success (true) or failure(false)
1797 function stats_temp_table_clean() {
1802 $sql['up1'] = 'INSERT INTO {stats_daily} (courseid, roleid, stattype, timeend, stat1, stat2)
1804 SELECT courseid, roleid, stattype, timeend, stat1, stat2 FROM {temp_stats_daily}';
1806 $sql['up2'] = 'INSERT INTO {stats_user_daily}
1807 (courseid, userid, roleid, timeend, statsreads, statswrites, stattype)
1809 SELECT courseid, userid, roleid, timeend, statsreads, statswrites, stattype
1810 FROM {temp_stats_user_daily}';
1812 foreach ($sql as $id => $query) {
1813 if (! stats_run_query($query)) {
1814 mtrace("Error during table cleanup!");
1819 $tables = array('temp_log1', 'temp_log2', 'temp_stats_daily', 'temp_stats_user_daily');
1821 foreach ($tables as $name) {
1822 $DB->delete_records($name);