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Add reconnectable statement

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This commit is contained in:
Nicolas Le Goff
2014-04-01 22:24:43 +02:00
parent cc276db6bd
commit 6f66f1de19
12 changed files with 314 additions and 293 deletions
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42
lib/classes/connection/abstract.php
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@@ -9,18 +9,16 @@
* file that was distributed with this source code.
*/
/**
*
*
* @license http://opensource.org/licenses/gpl-3.0 GPLv3
* @link www.phraseanet.com
*/
abstract class connection_abstract
{
protected $name;
protected $name = null;
protected $dsn = null;
protected $credentials = array();
protected $multi_db = true;
protected $connection;
protected $connection = null;
abstract public function close();
abstract public function connect();
public function get_credentials()
{
@@ -32,10 +30,6 @@ abstract class connection_abstract
return $this->multi_db;
}
/**
*
* @return string
*/
public function get_name()
{
return $this->name;
@@ -43,29 +37,35 @@ abstract class connection_abstract
public function ping()
{
if (null === $this->connection) {
$this->initConn();
if (false === $this->is_connected()) {
return false;
}
try {
$this->connection->query('SELECT 1');
} catch (PDOException $e) {
} catch (\PDOException $e) {
return false;
}
return true;
}
/**
*
* @return string
*/
public function server_info()
{
if (null === $this->connection) {
$this->initConn();
if (false === $this->ping()) {
throw new \Exception('Mysql server is not reachable');
}
return $this->connection->getAttribute(constant("PDO::ATTR_SERVER_VERSION"));
}
public function __destruct()
{
$this->close();
}
protected function is_connected()
{
return $this->connection !== null;
}
}

6
lib/classes/connection/interface.php
View File

@@ -9,12 +9,6 @@
* file that was distributed with this source code.
*/
/**
*
*
* @license http://opensource.org/licenses/gpl-3.0 GPLv3
* @link www.phraseanet.com
*/
interface connection_interface
{
public function ping();

203
lib/classes/connection/pdo.php
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@@ -9,134 +9,163 @@
* file that was distributed with this source code.
*/
/**
*
* @package connection
* @license http://opensource.org/licenses/gpl-3.0 GPLv3
* @link www.phraseanet.com
*/
class connection_pdo extends connection_abstract implements connection_interface
{
protected $debug;
protected $retryFrequency = 2;
protected $retryNumber = 1;
/**
*
* @param string $name
* @param string $hostname
* @param int $port
* @param string $user
* @param string $passwd
* @param string $dbname
* @param array $options
* @param Boolean $debug
*
* @return connection_pdo
*/
public function __construct($name, $hostname, $port, $user, $passwd, $dbname = false, $options = array(), $debug = false)
public function __construct($name, $hostname, $port, $user, $password, $databaseName = false, $options = array(), $debug = false)
{
$this->debug = $debug;
$this->name = $name;
$this->credentials['hostname'] = $hostname;
$this->credentials['port'] = $port;
$this->credentials['user'] = $user;
$this->credentials['password'] = $passwd;
$this->credentials['password'] = $password;
if ($databaseName) {
$this->credentials['dbname'] = $databaseName;
}
if ($dbname)
$this->credentials['dbname'] = $dbname;
$this->dsn = $this->buildDataSourceName($hostname, $port, $databaseName);
$this->initConn();
$this->connect();
return $this;
}
protected function initConn()
public function setRetryNumber($retryNumber)
{
$this->connection = null;
if (isset($this->credentials['dbname']))
$dsn = 'mysql:dbname=' . $this->credentials['dbname'] . ';host=' . $this->credentials['hostname'] . ';port=' . $this->credentials['port'] . ';';
else
$dsn = 'mysql:host=' . $this->credentials['hostname'] . ';port=' . $this->credentials['port'] . ';';
$this->connection = new \PDO($dsn, $this->credentials['user'], $this->credentials['password'], array());
$this->connection->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
$this->connection->exec("
SET character_set_results = 'utf8', character_set_client = 'utf8',
character_set_connection = 'utf8', character_set_database = 'utf8',
character_set_server = 'utf8'");
$this->retryNumber = $retryNumber;
}
/**
*
* @return void
*/
public function disconnect()
public function setRetryFrequency($retryFrequency)
{
$this->connection = null;
$this->retryFrequency = $retryFrequency;
}
public function connect()
{
// already connected do not reconnect
if ($this->ping()) {
return;
}
// if disconnected close connection
$this->close();
$tries = $this->retryNumber;
$infiniteMode = $this->retryNumber <= 0;
$lastException = null;
do {
if (!$infiniteMode) {
$tries--;
}
try {
$this->init();
} catch (\PDOException $e) {
$this->connection = null;
$lastException = $e;
// wait only if there is at least one try remaining or in infinite mode
// && connection has not been initialized
if ($infiniteMode || (!$infiniteMode && $tries !== 0)) {
sleep($this->retryFrequency);
}
}
} while (!$this->is_connected() && ($infiniteMode || (!$infiniteMode && $tries > 0)));
if (!$this->is_connected()) {
throw new Exception(sprintf('Failed to connect to "%s" database', $this->dsn), 0, $lastException);
}
}
/**
*
* @return void
*/
public function close()
{
connection::close_PDO_connection($this->name);
$this->connection = null;
}
public function __call($method, $args)
{
if (null === $this->connection) {
$this->initConn();
if (false === $this->is_connected()) {
throw new \LogicException('No connection available');
}
if (!method_exists($this->connection, $method)) {
throw new \BadMethodCallException(sprintf('Method %s does not exist', $method));
}
$tries = 0;
do {
$tries++;
try {
set_error_handler(function ($errno, $errstr) {
if (false !== strpos($errstr, 'Error while sending QUERY packet')) {
throw new \Exception('MySQL server has gone away');
}
throw new \Exception($errstr);
});
if ('prepare' === $method && $this->debug) {
$ret = new connection_pdoStatementDebugger(call_user_func_array(array($this->connection, $method), $args));
} else {
$ret = call_user_func_array(array($this->connection, $method), $args);
try {
set_error_handler(function ($errno, $errstr) {
if (false !== strpos($errstr, 'Error while sending QUERY packet')) {
throw new \Exception('MySQL server has gone away');
}
restore_error_handler();
throw new \Exception($errstr);
});
return $ret;
} catch (\Exception $e) {
restore_error_handler();
$returnValue = $this->doMethodCall($method, $args);
$found = (false !== strpos($e->getMessage(), 'MySQL server has gone away')) || (false !== strpos($e->getMessage(), 'errno=32 Broken pipe'));
if ($tries >= 2 || !$found) {
throw $e;
}
$this->initConn();
restore_error_handler();
return $returnValue;
} catch (\Exception $e) {
restore_error_handler();
$unreachable = (false !== strpos($e->getMessage(), 'MySQL server has gone away')) || (false !== strpos($e->getMessage(), 'errno=32 Broken pipe'));
if (!$unreachable) {
throw $e;
}
} while (true);
$this->connect();
}
return $this->doMethodCall($method, $args);
}
/**
*
* @param string $message
* @return connection_pdo
*/
protected function log($message)
protected function init()
{
file_put_contents(__DIR__ . '/../../../logs/sql_log.log', $message . "\n", FILE_APPEND);
if ($this->is_connected()) {
return;
}
return $this;
$this->connection = new \PDO($this->dsn, $this->credentials['user'], $this->credentials['password'], array());
$this->connection->setAttribute(\PDO::ATTR_ERRMODE, \PDO::ERRMODE_EXCEPTION);
$this->connection->exec("
SET character_set_results = 'utf8', character_set_client = 'utf8',
character_set_connection = 'utf8', character_set_database = 'utf8',
character_set_server = 'utf8'
");
}
private function doMethodCall($method, $args)
{
if ('prepare' === $method) {
$pdoStatement = call_user_func_array(array($this->connection, $method), $args);
$statement = new connection_pdoStatement($pdoStatement);
// decorate statement with reconnectable statement
$statement = new connection_pdoStatementReconnectable($statement, $this);
if ($this->debug) {
// decorate reconnectable statement with debugger one
$statement = new connection_pdoStatementDebugger($statement);
}
return $statement;
}
return call_user_func_array(array($this->connection, $method), $args);
}
private function buildDataSourceName($host, $port, $databaseName = null)
{
if (isset($databaseName)) {
return sprintf('mysql:dbname=%s;host=%s;port=%s;', $databaseName, $host, $port);
}
return sprintf('host=%s;port=%s;', $host, $port);
}
}

37
lib/classes/connection/pdoStatement.php Normal file
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@@ -0,0 +1,37 @@
<?php
/*
* This file is part of Phraseanet
*
* (c) 2005-2014 Alchemy
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
class connection_pdoStatement implements \connection_statement
{
protected $statement;
public function __construct(\PDOStatement $statement)
{
$this->statement = $statement;
return $this;
}
public function getQueryString()
{
return $this->statement->queryString;
}
public function execute($params = array())
{
return $this->statement->execute($params);
}
public function __call($function_name, $parameters)
{
return call_user_func_array(array($this->statement, $function_name), $parameters);
}
}

43
lib/classes/connection/pdoStatementDebugger.php
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@@ -9,26 +9,27 @@
* file that was distributed with this source code.
*/
/**
*
* @license http://opensource.org/licenses/gpl-3.0 GPLv3
* @link www.phraseanet.com
*/
class connection_pdoStatementDebugger
{
/**
*
* @var PDOStatement
*/
protected $statement;
use Monolog\Logger;
use Monolog\Handler\StreamHandler;
public function __construct(PDOStatement $statement)
class connection_pdoStatementDebugger implements connection_statement
{
protected $statement;
protected $logger;
public function __construct(\connection_statement $statement, Logger $logger = null)
{
$this->statement = $statement;
$this->logger = $logger ?: new Logger('sql-query', [new StreamHandler(__DIR__ . '/../../../logs/mysql_log.log')]);
return $this;
}
public function getQueryString()
{
return $this->statement->getQueryString();
}
public function execute($params = array())
{
$start = microtime(true);
@@ -38,13 +39,17 @@ class connection_pdoStatementDebugger
} catch (\Exception $e) {
$exception = $e;
}
$time = microtime(true) - $start;
connection::$log[] = array(
'query' => '' . str_replace(array_keys($params), array_values($params), $this->statement->queryString),
'time' => $time
);
if ($exception instanceof Exception)
$this->logger->addInfo(sprintf(
'%s sec - %s - %s',
round(microtime(true) - $start, 4),
$exception !== null ? 'ERROR QUERY' : 'OK QUERY',
str_replace(array_keys($params), array_values($params), $this->getQueryString())
));
if ($exception instanceof \Exception) {
throw $exception;
}
return $result;
}

52
lib/classes/connection/pdoStatementReconnectable.php Normal file
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@@ -0,0 +1,52 @@
<?php
/*
* This file is part of Phraseanet
*
* (c) 2005-2014 Alchemy
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
class connection_pdoStatementReconnectable implements \connection_statement
{
protected $queryString;
protected $statement;
protected $conn;
public function __construct(\connection_statement $statement, \connection_pdo $conn)
{
$this->statement = $statement;
$this->conn = $conn;
return $this;
}
public function getQueryString()
{
return $this->statement->getQueryString();
}
public function execute($params = array())
{
try {
return $this->statement->execute($params);
} catch (\Exception $e) {
$unreachable = ($e->getCode() === 2006) || (false !== strpos($e->getMessage(), 'MySQL server has gone away')) || (false !== strpos($e->getMessage(), 'errno=32 Broken pipe'));
if (!$unreachable) {
throw $e;
}
$this->conn->connect();
}
// retry query with update statement
$this->statement = $this->conn->prepare($this->getQueryString());
return $this->statement->execute($params);
}
public function __call($function_name, $parameters)
{
return call_user_func_array(array($this->statement, $function_name), $parameters);
}
}

16
lib/classes/connection/statement.php Normal file
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@@ -0,0 +1,16 @@
<?php
/*
* This file is part of Phraseanet
*
* (c) 2005-2014 Alchemy
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
interface connection_statement
{
public function execute($params = array());
public function getQueryString();
}