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Differences Between: [Versions 39 and 310] [Versions 39 and 311] [Versions 39 and 400] [Versions 39 and 401] [Versions 39 and 402] [Versions 39 and 403]

   1  <?php
   2  // This file is part of Moodle - http://moodle.org/
   3  //
   4  // Moodle is free software: you can redistribute it and/or modify
   5  // it under the terms of the GNU General Public License as published by
   6  // the Free Software Foundation, either version 3 of the License, or
   7  // (at your option) any later version.
   8  //
   9  // Moodle is distributed in the hope that it will be useful,
  10  // but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  // GNU General Public License for more details.
  13  //
  14  // You should have received a copy of the GNU General Public License
  15  // along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
  16  
  17  /**
  18   * Database logger for task logging.
  19   *
  20   * @package    core
  21   * @copyright  2018 Andrew Nicols <andrew@nicols.co.uk>
  22   * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  23   */
  24  namespace core\task;
  25  
  26  defined('MOODLE_INTERNAL') || die();
  27  
  28  /**
  29   * Database logger for task logging.
  30   *
  31   * @copyright  2018 Andrew Nicols <andrew@nicols.co.uk>
  32   * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  33   */
  34  class database_logger implements task_logger {
  35  
  36      /** @var int Type constant for a scheduled task */
  37      const TYPE_SCHEDULED = 0;
  38  
  39      /** @var int Type constant for an adhoc task */
  40      const TYPE_ADHOC = 1;
  41  
  42      /**
  43       * Whether the task is configured and ready to log.
  44       *
  45       * @return  bool
  46       */
  47      public static function is_configured() : bool {
  48          return true;
  49      }
  50  
  51      /**
  52       * Store the log for the specified task.
  53       *
  54       * @param   task_base   $task The task that the log belongs to.
  55       * @param   string      $logpath The path to the log on disk
  56       * @param   bool        $failed Whether the task failed
  57       * @param   int         $dbreads The number of DB reads
  58       * @param   int         $dbwrites The number of DB writes
  59       * @param   float       $timestart The start time of the task
  60       * @param   float       $timeend The end time of the task
  61       */
  62      public static function store_log_for_task(task_base $task, string $logpath, bool $failed,
  63              int $dbreads, int $dbwrites, float $timestart, float $timeend) {
  64          global $DB;
  65  
  66          // Write this log to the database.
  67          $logdata = (object) [
  68              'type' => is_a($task, scheduled_task::class) ? self::TYPE_SCHEDULED : self::TYPE_ADHOC,
  69              'component' => $task->get_component(),
  70              'classname' => get_class($task),
  71              'userid' => 0,
  72              'timestart' => $timestart,
  73              'timeend' => $timeend,
  74              'dbreads' => $dbreads,
  75              'dbwrites' => $dbwrites,
  76              'result' => (int) $failed,
  77              'output' => file_get_contents($logpath),
  78          ];
  79  
  80          if (is_a($task, adhoc_task::class) && $userid = $task->get_userid()) {
  81              $logdata->userid = $userid;
  82          }
  83  
  84          $logdata->id = $DB->insert_record('task_log', $logdata);
  85      }
  86  
  87      /**
  88       * Whether this task logger has a report available.
  89       *
  90       * @return  bool
  91       */
  92      public static function has_log_report() : bool {
  93          return true;
  94      }
  95  
  96      /**
  97       * Get any URL available for viewing relevant task log reports.
  98       *
  99       * @param   string      $classname The task class to fetch for
 100       * @return  \moodle_url
 101       */
 102      public static function get_url_for_task_class(string $classname) : \moodle_url {
 103          global $CFG;
 104  
 105          return new \moodle_url("/{$CFG->admin}/tasklogs.php", [
 106                  'filter' => $classname,
 107              ]);
 108      }
 109  
 110      /**
 111       * Cleanup old task logs.
 112       */
 113      public static function cleanup() {
 114          global $CFG, $DB;
 115  
 116          // Delete logs older than the retention period.
 117          $params = [
 118              'retentionperiod' => time() - $CFG->task_logretention,
 119          ];
 120          $logids = $DB->get_fieldset_select('task_log', 'id', 'timestart < :retentionperiod', $params);
 121          self::delete_task_logs($logids);
 122  
 123          // Delete logs to retain a minimum number of logs.
 124          $sql = "SELECT classname FROM {task_log} GROUP BY classname HAVING COUNT(classname) > :retaincount";
 125          $params = [
 126              'retaincount' => $CFG->task_logretainruns,
 127          ];
 128          $classes = $DB->get_fieldset_sql($sql, $params);
 129  
 130          foreach ($classes as $classname) {
 131              $notinsql = "";
 132              $params = [
 133                  'classname' => $classname,
 134              ];
 135  
 136              $retaincount = (int) $CFG->task_logretainruns;
 137              if ($retaincount) {
 138                  $keeplogs = $DB->get_records('task_log', [
 139                          'classname' => $classname,
 140                      ], 'timestart DESC', 'id', 0, $retaincount);
 141  
 142                  if ($keeplogs) {
 143                      list($notinsql, $params) = $DB->get_in_or_equal(array_keys($keeplogs), SQL_PARAMS_NAMED, 'p', false);
 144                      $params['classname'] = $classname;
 145                      $notinsql = " AND id {$notinsql}";
 146                  }
 147              }
 148  
 149              $logids = $DB->get_fieldset_select('task_log', 'id', "classname = :classname {$notinsql}", $params);
 150              self::delete_task_logs($logids);
 151          }
 152      }
 153  
 154      /**
 155       * Delete task logs for the specified logs.
 156       *
 157       * @param   array   $logids
 158       */
 159      public static function delete_task_logs(array $logids) {
 160          global $DB;
 161  
 162          if (empty($logids)) {
 163              return;
 164          }
 165  
 166          $chunks = array_chunk($logids, 1000);
 167          foreach ($chunks as $chunk) {
 168              $DB->delete_records_list('task_log', 'id', $chunk);
 169          }
 170      }
 171  }