mirror of
https://github.com/itflow-org/itflow
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70 lines
2.9 KiB
PHP
70 lines
2.9 KiB
PHP
<?php
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/*
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* ITFlow
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* Applies pending database migrations from admin/database_updates/
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* Used in conjunction with database_version.php
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*
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* Each file in admin/database_updates/ is named for the database version it
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* upgrades TO (e.g. 2.4.5.php contains the queries that bring 2.4.4 to 2.4.5).
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* This runner applies every file newer than the current database version, in
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* order, and bumps config_current_database_version after each one - so a
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* single run brings the database all the way to the latest version.
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*
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* To add a migration: create admin/database_updates/<new version>.php - that
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* is the whole job. The latest version is derived from the directory listing
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* (see includes/database_version.php) and this runner handles the version
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* bump, so there is no constant to update and no bump query to remember.
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*/
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// Check if our database versions are defined
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// If undefined, the file is probably being accessed directly rather than called via post.php?update_db or update_cli.php
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if (!defined("LATEST_DATABASE_VERSION") || !defined("CURRENT_DATABASE_VERSION") || !isset($mysqli)) {
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echo "Cannot access this file directly.";
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exit();
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}
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// Migration files include-guard against this constant
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define("FROM_DB_UPDATER", true);
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// Outputs for the caller (post/update.php, update_cli.php)
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$database_updates_applied = []; // Versions successfully applied this run
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$database_updates_error = null; // "version: error message" if a migration failed
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// Collect and order the migration files by version (glob sorts alphabetically,
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// which would put 2.4.10 before 2.4.9 - version_compare gets it right)
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$database_update_files = [];
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foreach (glob(__DIR__ . "/database_updates/*.php") as $file) {
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$version = basename($file, ".php");
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if (preg_match('/^\d+(\.\d+)+$/', $version)) {
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$database_update_files[$version] = $file;
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}
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}
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uksort($database_update_files, "version_compare");
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// Apply everything newer than the current database version, in order
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// (CURRENT_DATABASE_VERSION is a constant frozen at page load, so track progress in a variable)
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$database_current_version = CURRENT_DATABASE_VERSION;
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foreach ($database_update_files as $version => $file) {
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if (version_compare($version, $database_current_version, "<=")) {
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continue;
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}
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try {
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require $file;
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} catch (Throwable $e) {
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// Stop here - config_current_database_version still points at the last
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// completed migration, so a re-run resumes at this file
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$database_updates_error = "$version: " . $e->getMessage();
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error_log("ITFlow database update to version $version failed: " . $e->getMessage());
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break;
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}
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// Migration succeeded - bump the database version
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mysqli_query($mysqli, "UPDATE `settings` SET `config_current_database_version` = '" . escapeSql($version) . "'");
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$database_current_version = $version;
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$database_updates_applied[] = $version;
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}
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