diff --git a/bin/daemon.php b/bin/daemon.php index b8c8d2e34..acb26d819 100755 --- a/bin/daemon.php +++ b/bin/daemon.php @@ -119,6 +119,7 @@ if ($pid = pcntl_fork()) { // We lose the database connection upon forking dba::connect($db_host, $db_user, $db_pass, $db_data); +unset($db_host, $db_user, $db_pass, $db_data); Config::set('system', 'worker_daemon_mode', true); @@ -143,10 +144,9 @@ while (true) { Worker::spawnWorker($do_cron); if ($do_cron) { - // We force a disconnect and reconnect of the database connection. + // We force a reconnect of the database connection. // This is done to ensure that the connection don't get lost over time. - dba::disconnect(); - dba::connect($db_host, $db_user, $db_pass, $db_data); + dba::reconnect(); $last_cron = time(); } diff --git a/include/dba.php b/include/dba.php index 6b98f243e..c0617af8e 100644 --- a/include/dba.php +++ b/include/dba.php @@ -23,7 +23,12 @@ class dba { private static $errorno = 0; private static $affected_rows = 0; private static $in_transaction = false; + private static $in_retrial = false; private static $relation = []; + private static $db_serveraddr = ''; + private static $db_user = ''; + private static $db_pass = ''; + private static $db_name = ''; public static function connect($serveraddr, $user, $pass, $db) { if (!is_null(self::$db) && self::connected()) { @@ -34,6 +39,12 @@ class dba { $stamp1 = microtime(true); + // We are storing these values for being able to perform a reconnect + self::$db_serveraddr = $serveraddr; + self::$db_user = $user; + self::$db_pass = $pass; + self::$db_name = $db; + $serveraddr = trim($serveraddr); $serverdata = explode(':', $serveraddr); @@ -112,6 +123,16 @@ class dba { } } + /** + * Perform a reconnect of an existing database connection + */ + public static function reconnect() { + self::disconnect(); + + $ret = self::connect(self::$db_serveraddr, self::$db_user, self::$db_pass, self::$db_name); + return $ret; + } + /** * Return the database object. * @return PDO|mysqli @@ -451,23 +472,23 @@ class dba { break; } - $params = ''; + $param_types = ''; $values = []; foreach ($args AS $param => $value) { if (is_int($args[$param])) { - $params .= 'i'; + $param_types .= 'i'; } elseif (is_float($args[$param])) { - $params .= 'd'; + $param_types .= 'd'; } elseif (is_string($args[$param])) { - $params .= 's'; + $param_types .= 's'; } else { - $params .= 'b'; + $param_types .= 'b'; } $values[] = &$args[$param]; } if (count($values) > 0) { - array_unshift($values, $params); + array_unshift($values, $param_types); call_user_func_array([$stmt, 'bind_param'], $values); } @@ -490,7 +511,27 @@ class dba { $errorno = self::$errorno; logger('DB Error '.self::$errorno.': '.self::$error."\n". - System::callstack(8)."\n".self::replaceParameters($sql, $params)); + System::callstack(8)."\n".self::replaceParameters($sql, $args)); + + // On a lost connection we try to reconnect - but only once. + if ($errorno == 2006) { + if (self::$in_retrial || !self::reconnect()) { + // It doesn't make sense to continue when the database connection was lost + if (self::$in_retrial) { + logger('Giving up retrial because of database error '.$errorno.': '.$error); + } else { + logger("Couldn't reconnect after database error ".$errorno.': '.$error); + } + exit(1); + } else { + // We try it again + logger('Reconnected after database error '.$errorno.': '.$error); + self::$in_retrial = true; + $ret = self::p($sql, $args); + self::$in_retrial = false; + return $ret; + } + } self::$error = $error; self::$errorno = $errorno; @@ -557,6 +598,13 @@ class dba { logger('DB Error '.self::$errorno.': '.self::$error."\n". System::callstack(8)."\n".self::replaceParameters($sql, $params)); + // On a lost connection we simply quit. + // A reconnect like in self::p could be dangerous with modifications + if ($errorno == 2006) { + logger('Giving up because of database error '.$errorno.': '.$error); + exit(1); + } + self::$error = $error; self::$errorno = $errorno; }