45 lines
1.3 KiB
PHP
45 lines
1.3 KiB
PHP
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<?php
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/**
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* Class for detecting and applying migrations to the database.
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*/
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class MigrationDirectory extends DBDirectory {
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/**
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* Increment this constant to activate a new migration from the migrations directory
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*/
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const LAST_MIGRATION = 3;
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public function __construct() {
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parent::__construct();
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try {
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$stmt = $this->database->prepare('SELECT MAX(id) FROM migration');
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$stmt->execute();
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$result = $stmt->get_result();
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list($current_migration) = $result->fetch_row();
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} catch(mysqli_sql_exception $e) {
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if($e->getCode() === 1146) {
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$current_migration = 0;
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} else {
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throw $e;
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}
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}
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if($current_migration < self::LAST_MIGRATION) {
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$this->apply_pending_migrations($current_migration);
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}
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}
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private function apply_pending_migrations($current_migration) {
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openlog('dnsui', LOG_ODELAY, LOG_USER);
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for($migration_id = $current_migration + 1; $migration_id <= self::LAST_MIGRATION; $migration_id++) {
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$filename = str_pad($migration_id, 3, '0', STR_PAD_LEFT).'.php';
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syslog(LOG_INFO, "migration={$filename};object=database;action=apply");
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$migration_name = $filename;
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include('migrations/'.$filename);
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$stmt = $this->database->prepare('INSERT INTO migration VALUES (?, ?, NOW())');
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$stmt->bind_param('ds', $migration_id, $migration_name);
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$stmt->execute();
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}
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closelog();
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}
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}
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