PHP cleanup_contexts函数代码示例

//.........这里部分代码省略.........
            $context = context::instance_by_id($contextid);
            $this->assertSame(get_context_instance_by_id($contextid), $context);
            $this->assertSame(get_context_instance($record->contextlevel, $record->instanceid), $context);
            $this->assertSame(get_parent_contexts($context), $context->get_parent_context_ids());
            if ($context->id == SYSCONTEXTID) {
                $this->assertSame(get_parent_contextid($context), false);
            } else {
                $this->assertSame(get_parent_contextid($context), $context->get_parent_context()->id);
            }
        }

        $CFG->debug = 0;
        $children = get_child_contexts($systemcontext);
        $CFG->debug = DEBUG_DEVELOPER;
        $this->assertEquals(count($children), $DB->count_records('context')-1);
        unset($children);

        $DB->delete_records('context', array('contextlevel'=>CONTEXT_BLOCK));
        create_contexts();
        $this->assertFalse($DB->record_exists('context', array('contextlevel'=>CONTEXT_BLOCK)));

        $DB->set_field('context', 'depth', 0, array('contextlevel'=>CONTEXT_BLOCK));
        build_context_path();
        $this->assertFalse($DB->record_exists('context', array('depth'=>0)));

        $lastcourse = $DB->get_field_sql("SELECT MAX(id) FROM {course}");
        $DB->delete_records('course', array('id'=>$lastcourse));
        $lastcategory = $DB->get_field_sql("SELECT MAX(id) FROM {course_categories}");
        $DB->delete_records('course_categories', array('id'=>$lastcategory));
        $lastuser = $DB->get_field_sql("SELECT MAX(id) FROM {user} WHERE deleted=0");
        $DB->delete_records('user', array('id'=>$lastuser));
        $DB->delete_records('block_instances', array('parentcontextid'=>$frontpagepagecontext->id));
        $DB->delete_records('course_modules', array('id'=>$frontpagepagecontext->instanceid));
        cleanup_contexts();
        $count = 1; //system
        $count += $DB->count_records('user', array('deleted'=>0));
        $count += $DB->count_records('course_categories');
        $count += $DB->count_records('course');
        $count += $DB->count_records('course_modules');
        $count += $DB->count_records('block_instances');
        $this->assertEquals($DB->count_records('context'), $count);

        context_helper::reset_caches();
        preload_course_contexts($SITE->id);
        $this->assertEquals(context_inspection::test_context_cache_size(), 1);

        context_helper::reset_caches();
        list($select, $join) = context_instance_preload_sql('c.id', CONTEXT_COURSECAT, 'ctx');
        $sql = "SELECT c.id $select FROM {course_categories} c $join";
        $records = $DB->get_records_sql($sql);
        foreach ($records as $record) {
            context_instance_preload($record);
            $record = (array)$record;
            $this->assertEquals(1, count($record)); // only id left
        }
        $this->assertEquals(count($records), context_inspection::test_context_cache_size());

        accesslib_clear_all_caches(true);
        $DB->delete_records('cache_flags', array());
        mark_context_dirty($systemcontext->path);
        $dirty = get_cache_flags('accesslib/dirtycontexts', time()-2);
        $this->assertTrue(isset($dirty[$systemcontext->path]));

        accesslib_clear_all_caches(false);
        $DB->delete_records('cache_flags', array());
        $course = $DB->get_record('course', array('id'=>$testcourses[2]));

//.........这里部分代码省略.........
        $index->setAttributes(XMLDB_INDEX_UNIQUE, array('idnumber'));
        /// Launch drop index idnumber
        $result = $result && drop_index($table, $index);
        /// Define index idnumber-course (not unique) to be added to course_modules
        $table = new XMLDBTable('course_modules');
        $index = new XMLDBIndex('idnumber-course');
        $index->setAttributes(XMLDB_INDEX_NOTUNIQUE, array('idnumber', 'course'));
        /// Launch add index idnumber-course
        $result = $result && add_index($table, $index);
        /// Define index idnumber-courseid (not unique) to be added to grade_items
        $table = new XMLDBTable('grade_items');
        $index = new XMLDBIndex('idnumber-courseid');
        $index->setAttributes(XMLDB_INDEX_NOTUNIQUE, array('idnumber', 'courseid'));
        /// Launch add index idnumber-courseid
        $result = $result && add_index($table, $index);
        upgrade_main_savepoint($result, 2007090600);
    }
    /// Create the permanent context_temp table to be used by build_context_path()
    if ($result && $oldversion < 2007092001) {
        /// Define table context_temp to be created
        $table = new XMLDBTable('context_temp');
        /// Adding fields to table context_temp
        $table->addFieldInfo('id', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, null, null, null);
        $table->addFieldInfo('path', XMLDB_TYPE_CHAR, '255', null, XMLDB_NOTNULL, null, null, null, null);
        $table->addFieldInfo('depth', XMLDB_TYPE_INTEGER, '2', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, null, null, null);
        /// Adding keys to table context_temp
        $table->addKeyInfo('primary', XMLDB_KEY_PRIMARY, array('id'));
        /// Launch create table for context_temp
        $result = $result && create_table($table);
        /// make sure category depths, parents and paths are ok, categories from 1.5 may not be properly initialized (MDL-12585)
        upgrade_fix_category_depths();
        /// Recalculate depths, paths and so on
        if (!empty($CFG->rolesactive)) {
            cleanup_contexts();
            // make sure all course, category and user contexts exist - we need it for grade letter upgrade, etc.
            create_contexts(CONTEXT_COURSE, false, true);
            create_contexts(CONTEXT_USER, false, true);
            // we need all contexts path/depths filled properly
            build_context_path(true, true);
            load_all_capabilities();
        } else {
            // upgrade from 1.6 - build all contexts
            create_contexts(null, true, true);
        }
        upgrade_main_savepoint($result, 2007092001);
    }
    /**
     * Merging of grade_grades_text back into grade_grades
     */
    if ($result && $oldversion < 2007092002) {
        /// Define field feedback to be added to grade_grades
        $table = new XMLDBTable('grade_grades');
        $field = new XMLDBField('feedback');
        $field->setAttributes(XMLDB_TYPE_TEXT, 'medium', null, null, null, null, null, null, 'excluded');
        if (!field_exists($table, $field)) {
            /// Launch add field feedback
            $result = $result && add_field($table, $field);
        }
        /// Define field feedbackformat to be added to grade_grades
        $table = new XMLDBTable('grade_grades');
        $field = new XMLDBField('feedbackformat');
        $field->setAttributes(XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, null, null, '0', 'feedback');
        if (!field_exists($table, $field)) {
            /// Launch add field feedbackformat
            $result = $result && add_field($table, $field);
        }

//.........这里部分代码省略.........
            if ($DB->delete_records_select('cache_text', "timemodified < ?", array($cachelifetime))) {
                mtrace("Deleted old cache_text records");
            }
        }
        flush();
        if (!empty($CFG->notifyloginfailures)) {
            notify_login_failures();
            mtrace('Notified login failured');
        }
        flush();
        //
        // generate new password emails for users
        //
        mtrace('checking for create_password');
        if ($DB->count_records('user_preferences', array('name' => 'create_password', 'value' => '1'))) {
            mtrace('creating passwords for new users');
            $newusers = $DB->get_records_sql("SELECT u.id as id, u.email, u.firstname,\n                                                     u.lastname, u.username,\n                                                     p.id as prefid\n                                                FROM {user} u\n                                                JOIN {user_preferences} p ON u.id=p.userid\n                                               WHERE p.name='create_password' AND p.value='1' AND u.email !='' ");
            foreach ($newusers as $newuserid => $newuser) {
                // email user
                if (setnew_password_and_mail($newuser)) {
                    // remove user pref
                    $DB->delete_records('user_preferences', array('id' => $newuser->prefid));
                } else {
                    trigger_error("Could not create and mail new user password!");
                }
            }
        }
        if (!empty($CFG->usetags)) {
            require_once $CFG->dirroot . '/tag/lib.php';
            tag_cron();
            mtrace('Executed tag cron');
        }
        // Accesslib stuff
        cleanup_contexts();
        mtrace('Cleaned up contexts');
        gc_cache_flags();
        mtrace('Cleaned cache flags');
        // If you suspect that the context paths are somehow corrupt
        // replace the line below with: build_context_path(true);
        build_context_path();
        mtrace('Built context paths');
        if (!empty($CFG->messagingdeletereadnotificationsdelay)) {
            $notificationdeletetime = time() - $CFG->messagingdeletereadnotificationsdelay;
            $DB->delete_records_select('message_read', 'notification=1 AND timeread<:notificationdeletetime', array('notificationdeletetime' => $notificationdeletetime));
            mtrace('Cleaned up read notifications');
        }
        mtrace("Finished clean-up tasks...");
    }
    // End of occasional clean-up tasks
    // Run automated backups if required.
    require_once $CFG->dirroot . '/backup/util/includes/backup_includes.php';
    require_once $CFG->dirroot . '/backup/util/helper/backup_cron_helper.class.php';
    backup_cron_automated_helper::run_automated_backup();
    /// Run the auth cron, if any
    /// before enrolments because it might add users that will be needed in enrol plugins
    $auths = get_enabled_auth_plugins();
    mtrace("Running auth crons if required...");
    foreach ($auths as $auth) {
        $authplugin = get_auth_plugin($auth);
        if (method_exists($authplugin, 'cron')) {
            mtrace("Running cron for auth/{$auth}...");
            $authplugin->cron();
            if (!empty($authplugin->log)) {
                mtrace($authplugin->log);
            }
        }

/**
 * Upgrade moodle core
 * @param float $version target version
 * @param bool $verbose
 * @return void, may throw exception
 */
function upgrade_core($version, $verbose)
{
    global $CFG;
    raise_memory_limit(MEMORY_EXTRA);
    require_once $CFG->libdir . '/db/upgrade.php';
    // Defines upgrades
    try {
        // Reset caches before any output
        purge_all_caches();
        // Upgrade current language pack if we can
        if (empty($CFG->skiplangupgrade)) {
            if (get_string_manager()->translation_exists(current_language())) {
                upgrade_language_pack(false);
            }
        }
        print_upgrade_part_start('moodle', false, $verbose);
        // one time special local migration pre 2.0 upgrade script
        if ($version < 2007101600) {
            $pre20upgradefile = "{$CFG->dirrot}/local/upgrade_pre20.php";
            if (file_exists($pre20upgradefile)) {
                set_time_limit(0);
                require $pre20upgradefile;
                // reset upgrade timeout to default
                upgrade_set_timeout();
            }
        }
        $result = xmldb_main_upgrade($CFG->version);
        if ($version > $CFG->version) {
            // store version if not already there
            upgrade_main_savepoint($result, $version, false);
        }
        // perform all other component upgrade routines
        update_capabilities('moodle');
        log_update_descriptions('moodle');
        external_update_descriptions('moodle');
        events_update_definition('moodle');
        message_update_providers('moodle');
        // Reset caches again, just to be sure
        purge_all_caches();
        // Clean up contexts - more and more stuff depends on existence of paths and contexts
        cleanup_contexts();
        create_contexts();
        build_context_path();
        $syscontext = get_context_instance(CONTEXT_SYSTEM);
        mark_context_dirty($syscontext->path);
        print_upgrade_part_end('moodle', false, $verbose);
    } catch (Exception $ex) {
        upgrade_handle_exception($ex);
    }
}

//.........这里部分代码省略.........
     $prevsize = context_inspection::test_context_cache_size();
     for ($i = 0; $i < 100; $i++) {
         context_user::instance($testusers[$i]);
         $this->assertEqual(context_inspection::test_context_cache_size(), $prevsize);
     }
     context_user::instance($testusers[102]);
     $this->assertEqual(context_inspection::test_context_cache_size(), $prevsize + 1);
     unset($testusers);
     // =================================================================
     // ======= basic test of legacy functions ==========================
     // =================================================================
     // note: watch out, the fake site might be pretty borked already
     $this->assertIdentical(get_system_context(), context_system::instance());
     foreach ($DB->get_records('context') as $contextid => $record) {
         $context = context::instance_by_id($contextid);
         $this->assertIdentical(get_context_instance_by_id($contextid), $context);
         $this->assertIdentical(get_context_instance($record->contextlevel, $record->instanceid), $context);
         $this->assertIdentical(get_parent_contexts($context), $context->get_parent_context_ids());
         if ($context->id == SYSCONTEXTID) {
             $this->assertIdentical(get_parent_contextid($context), false);
         } else {
             $this->assertIdentical(get_parent_contextid($context), $context->get_parent_context()->id);
         }
     }
     $children = get_child_contexts($systemcontext);
     $this->assertEqual(count($children), $DB->count_records('context') - 1);
     unset($children);
     $DB->delete_records('context', array('contextlevel' => CONTEXT_BLOCK));
     create_contexts();
     $this->assertFalse($DB->record_exists('context', array('contextlevel' => CONTEXT_BLOCK)));
     $DB->set_field('context', 'depth', 0, array('contextlevel' => CONTEXT_BLOCK));
     build_context_path();
     $this->assertFalse($DB->record_exists('context', array('depth' => 0)));
     $lastcourse = $DB->get_field_sql("SELECT MAX(id) FROM {course}");
     $DB->delete_records('course', array('id' => $lastcourse));
     $lastcategory = $DB->get_field_sql("SELECT MAX(id) FROM {course_categories}");
     $DB->delete_records('course_categories', array('id' => $lastcategory));
     $lastuser = $DB->get_field_sql("SELECT MAX(id) FROM {user} WHERE deleted=0");
     $DB->delete_records('user', array('id' => $lastuser));
     $DB->delete_records('block_instances', array('parentcontextid' => $frontpagepagecontext->id));
     $DB->delete_records('course_modules', array('id' => $frontpagepagecontext->instanceid));
     cleanup_contexts();
     $count = 1;
     //system
     $count += $DB->count_records('user', array('deleted' => 0));
     $count += $DB->count_records('course_categories');
     $count += $DB->count_records('course');
     $count += $DB->count_records('course_modules');
     $count += $DB->count_records('block_instances');
     $this->assertEqual($DB->count_records('context'), $count);
     context_helper::reset_caches();
     preload_course_contexts($SITE->id);
     $this->assertEqual(context_inspection::test_context_cache_size(), 1);
     context_helper::reset_caches();
     list($select, $join) = context_instance_preload_sql('c.id', CONTEXT_COURSECAT, 'ctx');
     $sql = "SELECT c.id {$select} FROM {course_categories} c {$join}";
     $records = $DB->get_records_sql($sql);
     foreach ($records as $record) {
         context_instance_preload($record);
         $record = (array) $record;
         $this->assertEqual(1, count($record));
         // only id left
     }
     $this->assertEqual(count($records), context_inspection::test_context_cache_size());
     accesslib_clear_all_caches(true);
     $DB->delete_records('cache_flags', array());
     mark_context_dirty($systemcontext->path);
     $dirty = get_cache_flags('accesslib/dirtycontexts', time() - 2);
     $this->assertTrue(isset($dirty[$systemcontext->path]));
     accesslib_clear_all_caches(false);
     $DB->delete_records('cache_flags', array());
     $course = $DB->get_record('course', array('id' => $testcourses[2]));
     $context = get_context_instance(CONTEXT_COURSE, $course->id);
     $oldpath = $context->path;
     $miscid = $DB->get_field_sql("SELECT MIN(id) FROM {course_categories}");
     $categorycontext = context_coursecat::instance($miscid);
     $course->category = $miscid;
     $DB->update_record('course', $course);
     context_moved($context, $categorycontext);
     $context = get_context_instance(CONTEXT_COURSE, $course->id);
     $this->assertIdentical($context->get_parent_context(), $categorycontext);
     $this->assertTrue($DB->record_exists('context', array('contextlevel' => CONTEXT_COURSE, 'instanceid' => $testcourses[2])));
     delete_context(CONTEXT_COURSE, $testcourses[2]);
     $this->assertFalse($DB->record_exists('context', array('contextlevel' => CONTEXT_COURSE, 'instanceid' => $testcourses[2])));
     $name = get_contextlevel_name(CONTEXT_COURSE);
     $this->assertFalse(empty($name));
     $context = get_context_instance(CONTEXT_COURSE, $testcourses[2]);
     $name = print_context_name($context);
     $this->assertFalse(empty($name));
     $url = get_context_url($coursecontext);
     $this->assertFalse($url instanceof modole_url);
     $page = $DB->get_record('page', array('id' => $testpages[7]));
     $context = get_context_instance(CONTEXT_MODULE, $page->id);
     $coursecontext = get_course_context($context);
     $this->assertEqual($coursecontext->contextlevel, CONTEXT_COURSE);
     $this->assertEqual(get_courseid_from_context($context), $page->course);
     $caps = fetch_context_capabilities($systemcontext);
     $this->assertTrue(is_array($caps));
     unset($caps);
 }