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

   1  <?php
   2  
   3  // This file is part of Moodle - http://moodle.org/
   4  //
   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.
   9  //
  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.
  14  //
  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/>.
  17  
  18  /**
  19   * Defines restore_activity_task class
  20   *
  21   * @package     core_backup
  22   * @subpackage  moodle2
  23   * @category    backup
  24   * @copyright   2010 onwards Eloy Lafuente (stronk7) {@link http://stronk7.com}
  25   * @license     http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  26   */
  27  
  28  defined('MOODLE_INTERNAL') || die();
  29  
  30  /**
  31   * abstract activity task that provides all the properties and common tasks to be performed
  32   * when one activity is being restored
  33   *
  34   * TODO: Finish phpdocs
  35   */
  36  abstract class restore_activity_task extends restore_task {
  37  
  38      protected $info; // info related to activity gathered from backup file
  39      protected $modulename;  // name of the module
  40      protected $moduleid;    // new (target) id of the course module
  41      protected $oldmoduleid; // old (original) id of the course module
  42      protected $oldmoduleversion; // old (original) version of the module
  43      protected $contextid;   // new (target) context of the activity
  44      protected $oldcontextid;// old (original) context of the activity
  45      protected $activityid;  // new (target) id of the activity
  46      protected $oldactivityid;// old (original) id of the activity
  47  
  48      /**
  49       * Constructor - instantiates one object of this class
  50       */
  51      public function __construct($name, $info, $plan = null) {
  52          $this->info = $info;
  53          $this->modulename = $this->info->modulename;
  54          $this->moduleid = 0;
  55          $this->oldmoduleid = $this->info->moduleid;
  56          $this->oldmoduleversion = 0;
  57          $this->contextid = 0;
  58          $this->oldcontextid = 0;
  59          $this->activityid = 0;
  60          $this->oldactivityid = 0;
  61          parent::__construct($name, $plan);
  62      }
  63  
  64      /**
  65       * Activity tasks have their own directory to read files
  66       */
  67      public function get_taskbasepath() {
  68          return $this->get_basepath() . '/' . $this->info->directory;
  69      }
  70  
  71      public function set_moduleid($moduleid) {
  72          $this->moduleid = $moduleid;
  73      }
  74  
  75      public function set_old_moduleversion($oldmoduleversion) {
  76          $this->oldmoduleversion = $oldmoduleversion;
  77      }
  78  
  79      public function set_activityid($activityid) {
  80          $this->activityid = $activityid;
  81      }
  82  
  83      public function set_old_activityid($activityid) {
  84          $this->oldactivityid = $activityid;
  85      }
  86  
  87      public function set_contextid($contextid) {
  88          $this->contextid = $contextid;
  89      }
  90  
  91      public function set_old_contextid($contextid) {
  92          $this->oldcontextid = $contextid;
  93      }
  94  
  95      public function get_modulename() {
  96          return $this->modulename;
  97      }
  98  
  99      public function get_moduleid() {
 100          return $this->moduleid;
 101      }
 102  
 103      /**
 104       * Returns the old course module id (cmid of activity which will be restored)
 105       *
 106       * @return int
 107       */
 108      public function get_old_moduleid() {
 109          return $this->oldmoduleid;
 110      }
 111  
 112      public function get_old_moduleversion() {
 113          return $this->oldmoduleversion;
 114      }
 115  
 116      public function get_activityid() {
 117          return $this->activityid;
 118      }
 119  
 120      public function get_old_activityid() {
 121          return $this->oldactivityid;
 122      }
 123  
 124      public function get_contextid() {
 125          return $this->contextid;
 126      }
 127  
 128      public function get_old_contextid() {
 129          return $this->oldcontextid;
 130      }
 131  
 132      /**
 133       * Create all the steps that will be part of this task
 134       */
 135      public function build() {
 136  
 137          // If we have decided not to restore activities, prevent anything to be built
 138          if (!$this->get_setting_value('activities')) {
 139              $this->built = true;
 140              return;
 141          }
 142  
 143          // Load he course_module estructure, generating it (with instance = 0)
 144          // but allowing the creation of the target context needed in following steps
 145          $this->add_step(new restore_module_structure_step('module_info', 'module.xml'));
 146  
 147          // Here we add all the common steps for any activity and, in the point of interest
 148          // we call to define_my_steps() is order to get the particular ones inserted in place.
 149          $this->define_my_steps();
 150  
 151          // Roles (optionally role assignments and always role overrides)
 152          $this->add_step(new restore_ras_and_caps_structure_step('course_ras_and_caps', 'roles.xml'));
 153  
 154          // Filters (conditionally)
 155          if ($this->get_setting_value('filters')) {
 156              $this->add_step(new restore_filters_structure_step('activity_filters', 'filters.xml'));
 157          }
 158  
 159          // Comments (conditionally)
 160          if ($this->get_setting_value('comments')) {
 161              $this->add_step(new restore_comments_structure_step('activity_comments', 'comments.xml'));
 162          }
 163  
 164          // Calendar events (conditionally)
 165          if ($this->get_setting_value('calendarevents')) {
 166              $this->add_step(new restore_calendarevents_structure_step('activity_calendar', 'calendar.xml'));
 167          }
 168  
 169          // Grades (module-related, rest of gradebook is restored later if possible: cats, calculations...)
 170          $this->add_step(new restore_activity_grades_structure_step('activity_grades', 'grades.xml'));
 171  
 172          // Advanced grading methods attached to the module
 173          $this->add_step(new restore_activity_grading_structure_step('activity_grading', 'grading.xml'));
 174  
 175          // Grade history. The setting 'grade_history' is handled in the step.
 176          $this->add_step(new restore_activity_grade_history_structure_step('activity_grade_history', 'grade_history.xml'));
 177  
 178          // Userscompletion (conditionally)
 179          if ($this->get_setting_value('userscompletion')) {
 180              $this->add_step(new restore_userscompletion_structure_step('activity_userscompletion', 'completion.xml'));
 181          }
 182  
 183          // Logs (conditionally)
 184          if ($this->get_setting_value('logs')) {
 185              // Legacy logs.
 186              $this->add_step(new restore_activity_logs_structure_step('activity_logs', 'logs.xml'));
 187              // New log stores.
 188              $this->add_step(new restore_activity_logstores_structure_step('activity_logstores', 'logstores.xml'));
 189          }
 190  
 191          // Activity competencies.
 192          $this->add_step(new restore_activity_competencies_structure_step('activity_competencies', 'competencies.xml'));
 193  
 194          // Search reindexing, if enabled and if not restoring entire course.
 195          if (\core_search\manager::is_indexing_enabled()) {
 196              $wholecourse = $this->get_target() == backup::TARGET_NEW_COURSE;
 197              $wholecourse = $wholecourse || ($this->setting_exists('overwrite_conf') && $this->get_setting_value('overwrite_conf'));
 198              if (!$wholecourse) {
 199                  $this->add_step(new restore_activity_search_index('activity_search_index'));
 200              }
 201          }
 202  
 203          // The xAPI state (conditionally).
 204          if ($this->get_setting_value('xapistate')) {
 205              $this->add_step(new restore_xapistate_structure_step('activity_xapistate', 'xapistate.xml'));
 206          }
 207  
 208          // At the end, mark it as built
 209          $this->built = true;
 210      }
 211  
 212      /**
 213       * Exceptionally override the execute method, so, based in the activity_included setting, we are able
 214       * to skip the execution of one task completely
 215       */
 216      public function execute() {
 217  
 218          // Find activity_included_setting
 219          if (!$this->get_setting_value('included')) {
 220              $this->log('activity skipped by _included setting', backup::LOG_DEBUG, $this->name);
 221              $this->plan->set_excluding_activities(); // Inform plan we are excluding actvities
 222  
 223          } else { // Setting tells us it's ok to execute
 224              parent::execute();
 225          }
 226      }
 227  
 228  
 229      /**
 230       * Specialisation that, first of all, looks for the setting within
 231       * the task with the the prefix added and later, delegates to parent
 232       * without adding anything
 233       */
 234      public function get_setting($name) {
 235          $namewithprefix = $this->info->modulename . '_' . $this->info->moduleid . '_' . $name;
 236          $result = null;
 237          foreach ($this->settings as $key => $setting) {
 238              if ($setting->get_name() == $namewithprefix) {
 239                  if ($result != null) {
 240                      throw new base_task_exception('multiple_settings_by_name_found', $namewithprefix);
 241                  } else {
 242                      $result = $setting;
 243                  }
 244              }
 245          }
 246          if ($result) {
 247              return $result;
 248          } else {
 249              // Fallback to parent
 250              return parent::get_setting($name);
 251          }
 252      }
 253  
 254      /**
 255       * Define (add) particular steps that each activity can have
 256       */
 257      abstract protected function define_my_steps();
 258  
 259      /**
 260       * Define the contents in the activity that must be
 261       * processed by the link decoder
 262       */
 263      static public function define_decode_contents() {
 264          throw new coding_exception('define_decode_contents() method needs to be overridden in each subclass of restore_activity_task');
 265      }
 266  
 267      /**
 268       * Define the decoding rules for links belonging
 269       * to the activity to be executed by the link decoder
 270       */
 271      static public function define_decode_rules() {
 272          throw new coding_exception('define_decode_rules() method needs to be overridden in each subclass of restore_activity_task');
 273      }
 274  
 275      /**
 276       * Define the restore log rules that will be applied
 277       * by the {@link restore_logs_processor} when restoring
 278       * activity logs. It must return one array
 279       * of {@link restore_log_rule} objects
 280       */
 281      static public function define_restore_log_rules() {
 282          throw new coding_exception('define_restore_log_rules() method needs to be overridden in each subclass of restore_activity_task');
 283      }
 284  
 285  // Protected API starts here
 286  
 287      /**
 288       * Define the common setting that any restore activity will have
 289       */
 290      protected function define_settings() {
 291  
 292          // All the settings related to this activity will include this prefix
 293          $settingprefix = $this->info->modulename . '_' . $this->info->moduleid . '_';
 294  
 295          // All these are common settings to be shared by all activities
 296  
 297          // Define activity_include (to decide if the whole task must be really executed)
 298          // Dependent of:
 299          // - activities root setting
 300          // - section_included setting (if exists)
 301          $settingname = $settingprefix . 'included';
 302          $activity_included = new restore_activity_generic_setting($settingname, base_setting::IS_BOOLEAN, true);
 303          $activity_included->get_ui()->set_icon(new image_icon('monologo', get_string('pluginname', $this->modulename),
 304              $this->modulename, array('class' => 'iconlarge icon-post ml-1')));
 305          $this->add_setting($activity_included);
 306          // Look for "activities" root setting
 307          $activities = $this->plan->get_setting('activities');
 308          $activities->add_dependency($activity_included);
 309          // Look for "section_included" section setting (if exists)
 310          $settingname = 'section_' . $this->info->sectionid . '_included';
 311          if ($this->plan->setting_exists($settingname)) {
 312              $section_included = $this->plan->get_setting($settingname);
 313              $section_included->add_dependency($activity_included);
 314          }
 315  
 316          // Define activity_userinfo. Dependent of:
 317          // - users root setting
 318          // - section_userinfo setting (if exists)
 319          // - activity_included setting.
 320          $settingname = $settingprefix . 'userinfo';
 321          $defaultvalue = false;
 322          if (isset($this->info->settings[$settingname]) && $this->info->settings[$settingname]) { // Only enabled when available
 323              $defaultvalue = true;
 324          }
 325  
 326          $activity_userinfo = new restore_activity_userinfo_setting($settingname, base_setting::IS_BOOLEAN, $defaultvalue);
 327          if (!$defaultvalue) {
 328              // This is a bit hacky, but if there is no user data to restore, then
 329              // we replace the standard check-box with a select menu with the
 330              // single choice 'No', and the select menu is clever enough that if
 331              // there is only one choice, it just displays a static string.
 332              //
 333              // It would probably be better design to have a special UI class
 334              // setting_ui_checkbox_or_no, rather than this hack, but I am not
 335              // going to do that today.
 336              $activity_userinfo->set_ui(new backup_setting_ui_select($activity_userinfo, '-',
 337                      array(0 => get_string('no'))));
 338          } else {
 339              $activity_userinfo->get_ui()->set_label('-');
 340          }
 341  
 342          $this->add_setting($activity_userinfo);
 343  
 344          // Look for "users" root setting
 345          $users = $this->plan->get_setting('users');
 346          $users->add_dependency($activity_userinfo);
 347  
 348          // Look for "section_userinfo" section setting (if exists)
 349          $settingname = 'section_' . $this->info->sectionid . '_userinfo';
 350          if ($this->plan->setting_exists($settingname)) {
 351              $section_userinfo = $this->plan->get_setting($settingname);
 352              $section_userinfo->add_dependency($activity_userinfo);
 353          }
 354  
 355          // Look for "activity_included" setting.
 356          $activity_included->add_dependency($activity_userinfo);
 357  
 358          // End of common activity settings, let's add the particular ones.
 359          $this->define_my_settings();
 360      }
 361  
 362      /**
 363       * Define (add) particular settings that each activity can have
 364       */
 365      abstract protected function define_my_settings();
 366  }