Current Path : C:/xampp/htdocs/moodle/lib/dml/tests/ |
Current File : C:/xampp/htdocs/moodle/lib/dml/tests/dml_pgsql_read_slave_test.php |
<?php // This file is part of Moodle - http://moodle.org/ // // Moodle is free software: you can redistribute it and/or modify // it under the terms of the GNU General Public License as published by // the Free Software Foundation, either version 3 of the License, or // (at your option) any later version. // // Moodle is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the // GNU General Public License for more details. // // You should have received a copy of the GNU General Public License // along with Moodle. If not, see <http://www.gnu.org/licenses/>. /** * DML read/read-write database handle tests for pgsql_native_moodle_database * * @package core * @category dml * @copyright 2018 Srdjan Janković, Catalyst IT * @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later */ defined('MOODLE_INTERNAL') || die(); require_once(__DIR__.'/fixtures/read_slave_moodle_database_mock_pgsql.php'); /** * DML pgsql_native_moodle_database read slave specific tests * * @package core * @category dml * @copyright 2018 Catalyst IT * @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later */ class core_dml_pgsql_read_slave_testcase extends base_testcase { /** * Test correct database handles are used for cursors * * @return void */ public function test_cursors() : void { $DB = new read_slave_moodle_database_mock_pgsql(); // Declare a cursor on a table that has not been written to. list($sql, $params, $type) = $DB->fix_sql_params("SELECT * FROM {table}"); $sql = "DECLARE crs1 NO SCROLL CURSOR WITH HOLD FOR $sql"; $DB->query_start($sql, null, SQL_QUERY_SELECT); $DB->query_end(null); // Declare a cursor on a table that has been written to. list($sql, $params, $type) = $DB->fix_sql_params("INSERT INTO {table2} (name) VALUES ('blah')"); $DB->query_start($sql, null, SQL_QUERY_INSERT); $DB->query_end(null); list($sql, $params, $type) = $DB->fix_sql_params("SELECT * FROM {table2}"); $sql = "DECLARE crs2 NO SCROLL CURSOR WITH HOLD FOR $sql"; $DB->query_start($sql, null, SQL_QUERY_SELECT); $DB->query_end(null); // Read from the non-written to table cursor. $sql = 'FETCH 1 FROM crs1'; $DB->query_start($sql, null, SQL_QUERY_AUX); $this->assertEquals('test_ro', $DB->get_db_handle()); $DB->query_end(null); // Read from the written to table cursor. $sql = 'FETCH 1 FROM crs2'; $DB->query_start($sql, null, SQL_QUERY_AUX); $this->assertEquals('test_rw', $DB->get_db_handle()); $DB->query_end(null); } /** * Test readonly handle is used for reading from random pg_*() call queries. * * @return void */ public function test_read_pg_table() : void { $DB = new read_slave_moodle_database_mock_pgsql(); $this->assertEquals(0, $DB->perf_get_reads_slave()); $DB->query_start('SELECT pg_whatever(1)', null, SQL_QUERY_SELECT); $this->assertEquals('test_ro', $DB->get_db_handle()); $DB->query_end(null); $this->assertEquals(1, $DB->perf_get_reads_slave()); } /** * Test readonly handle is not used for reading from special pg_*() call queries, * pg_try_advisory_lock and pg_advisory_unlock. * * @return void */ public function test_read_pg_lock_table() : void { $DB = new read_slave_moodle_database_mock_pgsql(); $this->assertEquals(0, $DB->perf_get_reads_slave()); foreach (['pg_try_advisory_lock', 'pg_advisory_unlock'] as $fn) { $DB->query_start("SELECT $fn(1)", null, SQL_QUERY_SELECT); $this->assertEquals('test_rw', $DB->get_db_handle()); $DB->query_end(null); $this->assertEquals(0, $DB->perf_get_reads_slave()); } } /** * Test readonly handle is not used for reading from temptables * and getting temptables metadata. * This test is only possible because of no pg_query error reporting. * It may need to be removed in the future if we decide to handle null * results in pgsql_native_moodle_database differently. * * @return void */ public function test_temp_table() : void { $DB = new read_slave_moodle_database_mock_pgsql(); $this->assertEquals(0, $DB->perf_get_reads_slave()); $dbman = $DB->get_manager(); $table = new xmldb_table('silly_test_table'); $table->add_field('id', XMLDB_TYPE_INTEGER, 10, null, XMLDB_NOTNULL, XMLDB_SEQUENCE); $table->add_field('msg', XMLDB_TYPE_CHAR, 255); $table->add_key('primary', XMLDB_KEY_PRIMARY, ['id']); $dbman->create_temp_table($table); $DB->get_columns('silly_test_table'); $DB->get_records('silly_test_table'); $this->assertEquals(0, $DB->perf_get_reads_slave()); } /** * Test readonly connection failure with real pgsql connection * * @return void */ public function test_real_readslave_connect_fail() : void { global $DB; if ($DB->get_dbfamily() != 'postgres') { $this->markTestSkipped("Not postgres"); } // Open second connection. $cfg = $DB->export_dbconfig(); if (!isset($cfg->dboptions)) { $cfg->dboptions = array(); } $cfg->dboptions['readonly'] = [ 'instance' => ['host.that.is.not'], 'connecttimeout' => 1 ]; $db2 = moodle_database::get_driver_instance($cfg->dbtype, $cfg->dblibrary); $db2->connect($cfg->dbhost, $cfg->dbuser, $cfg->dbpass, $cfg->dbname, $cfg->prefix, $cfg->dboptions); $this->assertTrue(count($db2->get_records('user')) > 0); } }