You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
45 lines
1.3 KiB
PHP
45 lines
1.3 KiB
PHP
<?php
|
|
|
|
/**
|
|
* Class for detecting and applying migrations to the database.
|
|
*/
|
|
class MigrationDirectory extends DBDirectory {
|
|
/**
|
|
* Increment this constant to activate a new migration from the migrations directory
|
|
*/
|
|
const LAST_MIGRATION = 3;
|
|
|
|
public function __construct() {
|
|
parent::__construct();
|
|
try {
|
|
$stmt = $this->database->prepare('SELECT MAX(id) FROM migration');
|
|
$stmt->execute();
|
|
$result = $stmt->get_result();
|
|
list($current_migration) = $result->fetch_row();
|
|
} catch(mysqli_sql_exception $e) {
|
|
if($e->getCode() === 1146) {
|
|
$current_migration = 0;
|
|
} else {
|
|
throw $e;
|
|
}
|
|
}
|
|
if($current_migration < self::LAST_MIGRATION) {
|
|
$this->apply_pending_migrations($current_migration);
|
|
}
|
|
}
|
|
|
|
private function apply_pending_migrations($current_migration) {
|
|
openlog('dnsui', LOG_ODELAY, LOG_USER);
|
|
for($migration_id = $current_migration + 1; $migration_id <= self::LAST_MIGRATION; $migration_id++) {
|
|
$filename = str_pad($migration_id, 3, '0', STR_PAD_LEFT).'.php';
|
|
syslog(LOG_INFO, "migration={$filename};object=database;action=apply");
|
|
$migration_name = $filename;
|
|
include('migrations/'.$filename);
|
|
$stmt = $this->database->prepare('INSERT INTO migration VALUES (?, ?, NOW())');
|
|
$stmt->bind_param('ds', $migration_id, $migration_name);
|
|
$stmt->execute();
|
|
}
|
|
closelog();
|
|
}
|
|
}
|