<?php
+use Friendica\App;
use Friendica\Core\L10n;
use Friendica\Core\System;
use Friendica\Database\DBM;
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, $install = false) {
- if (!is_null(self::$db)) {
+ public static function connect($serveraddr, $user, $pass, $db) {
+ if (!is_null(self::$db) && self::connected()) {
return true;
}
$stamp1 = microtime(true);
+ // We are storing these values for being able to perform a reconnect
+ self::$db_serveraddr = $serveraddr;
+ self::$db_user = $user;
+ self::$db_pass = $pass;
+ self::$db_name = $db;
+
$serveraddr = trim($serveraddr);
$serverdata = explode(':', $serveraddr);
return false;
}
- if ($install) {
- // server has to be a non-empty string that is not 'localhost' and not an IP
- if (strlen($server) && ($server !== 'localhost') && filter_var($server, FILTER_VALIDATE_IP) === false) {
- if (! dns_get_record($server, DNS_A + DNS_CNAME)) {
- self::$error = L10n::t('Cannot locate DNS info for database server \'%s\'', $server);
- return false;
- }
- }
- }
-
if (class_exists('\PDO') && in_array('mysql', PDO::getAvailableDrivers())) {
self::$driver = 'pdo';
$connect = "mysql:host=".$server.";dbname=".$db;
return self::$connected;
}
+ /**
+ * Disconnects the current database connection
+ */
+ public static function disconnect()
+ {
+ if (is_null(self::$db)) {
+ return;
+ }
+
+ switch (self::$driver) {
+ case 'pdo':
+ self::$db = null;
+ break;
+ case 'mysqli':
+ self::$db->close();
+ self::$db = null;
+ break;
+ }
+ }
+
+ /**
+ * 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 $ret;
+ }
+
+ /**
+ * Return the database object.
+ * @return PDO|mysqli
+ */
+ public static function get_db()
+ {
+ return self::$db;
+ }
+
/**
* @brief Returns the MySQL server version string
*
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);
}
$errorno = self::$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;
*
* @param string $table Table name
* @param array $conditions Field condition(s)
+ * @param array $options
+ * - cascade: If true we delete records in other tables that depend on the one we're deleting through
+ * relations (default: true)
* @param boolean $in_process Internal use: Only do a commit after the last delete
* @param array $callstack Internal use: prevent endless loops
*
* @return boolean|array was the delete successful? When $in_process is set: deletion data
*/
- public static function delete($table, array $conditions, $in_process = false, array &$callstack = [])
+ public static function delete($table, array $conditions, array $options = [], $in_process = false, array &$callstack = [])
{
if (empty($table) || empty($conditions)) {
logger('Table and conditions have to be set');
$commands[$key] = ['table' => $table, 'conditions' => $conditions];
+ $cascade = defaults($options, 'cascade', true);
+
// To speed up the whole process we cache the table relations
- if (count(self::$relation) == 0) {
+ if ($cascade && count(self::$relation) == 0) {
self::buildRelationData();
}
// Is there a relation entry for the table?
- if (isset(self::$relation[$table])) {
+ if ($cascade && isset(self::$relation[$table])) {
// We only allow a simple "one field" relation.
$field = array_keys(self::$relation[$table])[0];
$rel_def = array_values(self::$relation[$table])[0];
if ((count($conditions) == 1) && ($field == array_keys($conditions)[0])) {
foreach ($rel_def AS $rel_table => $rel_fields) {
foreach ($rel_fields AS $rel_field) {
- $retval = self::delete($rel_table, [$rel_field => array_values($conditions)[0]], true, $callstack);
+ $retval = self::delete($rel_table, [$rel_field => array_values($conditions)[0]], $options, true, $callstack);
$commands = array_merge($commands, $retval);
}
}
while ($row = self::fetch($data)) {
// Now we accumulate the delete commands
- $retval = self::delete($table, [$field => $row[$field]], true, $callstack);
+ $retval = self::delete($table, [$field => $row[$field]], $options, true, $callstack);
$commands = array_merge($commands, $retval);
}
// Split the SQL queries in chunks of 100 values
// We do the $i stuff here to make the code better readable
$i = $counter[$key_table][$key_condition];
- if (count($compacted[$key_table][$key_condition][$i]) > 100) {
+ if (isset($compacted[$key_table][$key_condition][$i]) && count($compacted[$key_table][$key_condition][$i]) > 100) {
++$i;
}
$condition_string = self::buildCondition($condition);
- $order_string = '';
- if (isset($params['order'])) {
- $order_string = " ORDER BY ";
- foreach ($params['order'] AS $fields => $order) {
- if (!is_int($fields)) {
- $order_string .= "`" . $fields . "` " . ($order ? "DESC" : "ASC") . ", ";
- } else {
- $order_string .= "`" . $order . "`, ";
- }
- }
- $order_string = substr($order_string, 0, -2);
- }
-
- $limit_string = '';
- if (isset($params['limit']) && is_int($params['limit'])) {
- $limit_string = " LIMIT " . $params['limit'];
- }
-
- if (isset($params['limit']) && is_array($params['limit'])) {
- $limit_string = " LIMIT " . intval($params['limit'][0]) . ", " . intval($params['limit'][1]);
- }
+ $param_string = self::buildParameter($params);
- $sql = "SELECT " . $select_fields . " FROM `" . $table . "`" . $condition_string . $order_string . $limit_string;
+ $sql = "SELECT " . $select_fields . " FROM `" . $table . "`" . $condition_string . $param_string;
$result = self::p($sql, $condition);
* @param array $condition
* @return string
*/
- private static function buildCondition(array &$condition = [])
+ public static function buildCondition(array &$condition = [])
{
$condition_string = '';
if (count($condition) > 0) {
reset($condition);
$first_key = key($condition);
if (is_int($first_key)) {
- $condition_string = " WHERE ".array_shift($condition);
+ $condition_string = " WHERE (" . array_shift($condition) . ")";
} else {
$new_values = [];
$condition_string = "";
$condition_string .= "`" . $field . "` = ?";
}
}
- $condition_string = " WHERE " . $condition_string;
+ $condition_string = " WHERE (" . $condition_string . ")";
$condition = $new_values;
}
}
return $condition_string;
}
+ /**
+ * @brief Returns the SQL parameter string built from the provided parameter array
+ *
+ * @param array $params
+ * @return string
+ */
+ public static function buildParameter(array $params = [])
+ {
+ $order_string = '';
+ if (isset($params['order'])) {
+ $order_string = " ORDER BY ";
+ foreach ($params['order'] AS $fields => $order) {
+ if (!is_int($fields)) {
+ $order_string .= "`" . $fields . "` " . ($order ? "DESC" : "ASC") . ", ";
+ } else {
+ $order_string .= "`" . $order . "`, ";
+ }
+ }
+ $order_string = substr($order_string, 0, -2);
+ }
+
+ $limit_string = '';
+ if (isset($params['limit']) && is_int($params['limit'])) {
+ $limit_string = " LIMIT " . $params['limit'];
+ }
+
+ if (isset($params['limit']) && is_array($params['limit'])) {
+ $limit_string = " LIMIT " . intval($params['limit'][0]) . ", " . intval($params['limit'][1]);
+ }
+
+ return $order_string.$limit_string;
+ }
+
/**
* @brief Fills an array with data from a query
*
https://reisub.nsupdate.info/git / friendica.git / .git / blobdiff