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<?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 mysqli_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
*/
namespace core;
use moodle_database;
defined('MOODLE_INTERNAL') || die();
require_once(__DIR__.'/fixtures/read_slave_moodle_database_mock_mysqli.php');
/**
* DML mysqli_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
* @covers \mysqli_native_moodle_database
*/
class dml_mysqli_read_slave_test extends \base_testcase {
/**
* 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_lock(): void {
$DB = new read_slave_moodle_database_mock_mysqli();
$this->assertEquals(0, $DB->perf_get_reads_slave());
$DB->query_start("SELECT GET_LOCK('lock',1)", null, SQL_QUERY_SELECT);
$this->assertTrue($DB->db_handle_is_rw());
$DB->query_end(null);
$this->assertEquals(0, $DB->perf_get_reads_slave());
$DB->query_start("SELECT RELEASE_LOCK('lock',1)", null, SQL_QUERY_SELECT);
$this->assertTrue($DB->db_handle_is_rw());
$DB->query_end(null);
$this->assertEquals(0, $DB->perf_get_reads_slave());
}
/**
* Test readonly handle is used for SQL_QUERY_AUX_READONLY queries.
*
* @return void
*/
public function test_aux_readonly(): void {
global $DB;
if ($DB->get_dbfamily() != 'mysql') {
$this->markTestSkipped("Not mysql");
}
// Open second connection.
$cfg = $DB->export_dbconfig();
if (!isset($cfg->dboptions)) {
$cfg->dboptions = [];
}
$cfg->dboptions['readonly'] = [
'instance' => [$cfg->dbhost]
];
$cfg->dboptions['dbengine'] = null;
$cfg->dboptions['bulkinsertsize'] = null;
// Get a separate disposable db connection handle with guaranteed 'readonly' config.
$db2 = moodle_database::get_driver_instance($cfg->dbtype, $cfg->dblibrary);
$db2->connect($cfg->dbhost, $cfg->dbuser, $cfg->dbpass, $cfg->dbname, $cfg->prefix, $cfg->dboptions);
$reads = $db2->perf_get_reads();
$readsprimary = $reads - $db2->perf_get_reads_slave();
// Readonly handle queries.
$db2->setup_is_unicodedb();
$this->assertGreaterThan($reads, $reads = $db2->perf_get_reads());
$this->assertEquals($readsprimary, $reads - $db2->perf_get_reads_slave());
$db2->get_tables();
$this->assertGreaterThan($reads, $reads = $db2->perf_get_reads());
$this->assertEquals($readsprimary, $reads - $db2->perf_get_reads_slave());
$db2->get_indexes('course');
$this->assertGreaterThan($reads, $reads = $db2->perf_get_reads());
$this->assertEquals($readsprimary, $reads - $db2->perf_get_reads_slave());
$db2->get_columns('course');
$this->assertGreaterThan($reads, $reads = $db2->perf_get_reads());
$this->assertEquals($readsprimary, $reads - $db2->perf_get_reads_slave());
// Readwrite handle queries.
if (PHP_INT_SIZE !== 4) {
$rc = new \ReflectionClass(\mysqli_native_moodle_database::class);
$rcm = $rc->getMethod('insert_chunk_size');
$rcm->setAccessible(true);
$rcm->invoke($db2);
$this->assertGreaterThan($reads, $reads = $db2->perf_get_reads());
$this->assertGreaterThan($readsprimary, $readsprimary = $reads - $db2->perf_get_reads_slave());
}
$db2->get_dbengine();
$this->assertGreaterThan($reads, $reads = $db2->perf_get_reads());
$this->assertGreaterThan($readsprimary, $readsprimary = $reads - $db2->perf_get_reads_slave());
$db2->diagnose();
$this->assertGreaterThan($reads, $reads = $db2->perf_get_reads());
$this->assertGreaterThan($readsprimary, $readsprimary = $reads - $db2->perf_get_reads_slave());
$db2->get_row_format('course');
$this->assertGreaterThan($reads, $reads = $db2->perf_get_reads());
$this->assertGreaterThan($readsprimary, $readsprimary = $reads - $db2->perf_get_reads_slave());
}
/**
* Test readonly connection failure with real mysqli connection
*
* @return void
*/
public function test_real_readslave_connect_fail(): void {
global $DB;
if ($DB->get_dbfamily() != 'mysql') {
$this->markTestSkipped('Not mysql');
}
// Open second connection.
$cfg = $DB->export_dbconfig();
if (!isset($cfg->dboptions)) {
$cfg->dboptions = [];
}
$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);
}
}
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