mirror of
https://github.com/alextselegidis/easyappointments.git
synced 2024-11-23 00:13:21 +03:00
364 lines
8.3 KiB
PHP
364 lines
8.3 KiB
PHP
<?php
|
|
/**
|
|
* CodeIgniter
|
|
*
|
|
* An open source application development framework for PHP
|
|
*
|
|
* This content is released under the MIT License (MIT)
|
|
*
|
|
* Copyright (c) 2014 - 2019, British Columbia Institute of Technology
|
|
*
|
|
* Permission is hereby granted, free of charge, to any person obtaining a copy
|
|
* of this software and associated documentation files (the "Software"), to deal
|
|
* in the Software without restriction, including without limitation the rights
|
|
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
|
|
* copies of the Software, and to permit persons to whom the Software is
|
|
* furnished to do so, subject to the following conditions:
|
|
*
|
|
* The above copyright notice and this permission notice shall be included in
|
|
* all copies or substantial portions of the Software.
|
|
*
|
|
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
|
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
|
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
|
|
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
|
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
|
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
|
|
* THE SOFTWARE.
|
|
*
|
|
* @package CodeIgniter
|
|
* @author EllisLab Dev Team
|
|
* @copyright Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
|
|
* @copyright Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
|
|
* @license https://opensource.org/licenses/MIT MIT License
|
|
* @link https://codeigniter.com
|
|
* @since Version 3.0.0
|
|
* @filesource
|
|
*/
|
|
defined('BASEPATH') OR exit('No direct script access allowed');
|
|
|
|
/**
|
|
* CodeIgniter Redis Caching Class
|
|
*
|
|
* @package CodeIgniter
|
|
* @subpackage Libraries
|
|
* @category Core
|
|
* @author Anton Lindqvist <anton@qvister.se>
|
|
* @link
|
|
*/
|
|
class CI_Cache_redis extends CI_Driver
|
|
{
|
|
/**
|
|
* Default config
|
|
*
|
|
* @static
|
|
* @var array
|
|
*/
|
|
protected static $_default_config = array(
|
|
'host' => '127.0.0.1',
|
|
'password' => NULL,
|
|
'port' => 6379,
|
|
'timeout' => 0,
|
|
'database' => 0
|
|
);
|
|
|
|
/**
|
|
* Redis connection
|
|
*
|
|
* @var Redis
|
|
*/
|
|
protected $_redis;
|
|
|
|
|
|
/**
|
|
* del()/delete() method name depending on phpRedis version
|
|
*
|
|
* @var string
|
|
*/
|
|
protected static $_delete_name;
|
|
|
|
/**
|
|
* sRem()/sRemove() method name depending on phpRedis version
|
|
*
|
|
* @var string
|
|
*/
|
|
protected static $_sRemove_name;
|
|
|
|
// ------------------------------------------------------------------------
|
|
|
|
/**
|
|
* Class constructor
|
|
*
|
|
* Setup Redis
|
|
*
|
|
* Loads Redis config file if present. Will halt execution
|
|
* if a Redis connection can't be established.
|
|
*
|
|
* @return void
|
|
* @see Redis::connect()
|
|
*/
|
|
public function __construct()
|
|
{
|
|
if ( ! $this->is_supported())
|
|
{
|
|
log_message('error', 'Cache: Failed to create Redis object; extension not loaded?');
|
|
return;
|
|
}
|
|
|
|
if ( ! isset(static::$_delete_name, static::$_sRemove_name))
|
|
{
|
|
if (version_compare(phpversion('redis'), '5', '>='))
|
|
{
|
|
static::$_delete_name = 'del';
|
|
static::$_sRemove_name = 'sRem';
|
|
}
|
|
else
|
|
{
|
|
static::$_delete_name = 'delete';
|
|
static::$_sRemove_name = 'sRemove';
|
|
}
|
|
}
|
|
|
|
$CI =& get_instance();
|
|
|
|
if ($CI->config->load('redis', TRUE, TRUE))
|
|
{
|
|
$config = array_merge(self::$_default_config, $CI->config->item('redis'));
|
|
}
|
|
else
|
|
{
|
|
$config = self::$_default_config;
|
|
}
|
|
|
|
$this->_redis = new Redis();
|
|
|
|
try
|
|
{
|
|
if ( ! $this->_redis->connect($config['host'], ($config['host'][0] === '/' ? 0 : $config['port']), $config['timeout']))
|
|
{
|
|
log_message('error', 'Cache: Redis connection failed. Check your configuration.');
|
|
}
|
|
|
|
if (isset($config['password']) && ! $this->_redis->auth($config['password']))
|
|
{
|
|
log_message('error', 'Cache: Redis authentication failed.');
|
|
}
|
|
|
|
if (isset($config['database']) && $config['database'] > 0 && ! $this->_redis->select($config['database']))
|
|
{
|
|
log_message('error', 'Cache: Redis select database failed.');
|
|
}
|
|
}
|
|
catch (RedisException $e)
|
|
{
|
|
log_message('error', 'Cache: Redis connection refused ('.$e->getMessage().')');
|
|
}
|
|
}
|
|
|
|
// ------------------------------------------------------------------------
|
|
|
|
/**
|
|
* Get cache
|
|
*
|
|
* @param string $key Cache ID
|
|
* @return mixed
|
|
*/
|
|
public function get($key)
|
|
{
|
|
$data = $this->_redis->hMGet($key, array('__ci_type', '__ci_value'));
|
|
|
|
if ($value !== FALSE && $this->_redis->sIsMember('_ci_redis_serialized', $key))
|
|
{
|
|
return FALSE;
|
|
}
|
|
|
|
switch ($data['__ci_type'])
|
|
{
|
|
case 'array':
|
|
case 'object':
|
|
return unserialize($data['__ci_value']);
|
|
case 'boolean':
|
|
case 'integer':
|
|
case 'double': // Yes, 'double' is returned and NOT 'float'
|
|
case 'string':
|
|
case 'NULL':
|
|
return settype($data['__ci_value'], $data['__ci_type'])
|
|
? $data['__ci_value']
|
|
: FALSE;
|
|
case 'resource':
|
|
default:
|
|
return FALSE;
|
|
}
|
|
}
|
|
|
|
// ------------------------------------------------------------------------
|
|
|
|
/**
|
|
* Save cache
|
|
*
|
|
* @param string $id Cache ID
|
|
* @param mixed $data Data to save
|
|
* @param int $ttl Time to live in seconds
|
|
* @param bool $raw Whether to store the raw value (unused)
|
|
* @return bool TRUE on success, FALSE on failure
|
|
*/
|
|
public function save($id, $data, $ttl = 60, $raw = FALSE)
|
|
{
|
|
switch ($data_type = gettype($data))
|
|
{
|
|
case 'array':
|
|
case 'object':
|
|
$data = serialize($data);
|
|
break;
|
|
case 'boolean':
|
|
case 'integer':
|
|
case 'double': // Yes, 'double' is returned and NOT 'float'
|
|
case 'string':
|
|
case 'NULL':
|
|
break;
|
|
case 'resource':
|
|
default:
|
|
return FALSE;
|
|
}
|
|
|
|
if ( ! $this->_redis->hMSet($id, array('__ci_type' => $data_type, '__ci_value' => $data)))
|
|
{
|
|
return FALSE;
|
|
}
|
|
else
|
|
{
|
|
$this->_redis->{static::$_sRemove_name}('_ci_redis_serialized', $id);
|
|
}
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
// ------------------------------------------------------------------------
|
|
|
|
/**
|
|
* Delete from cache
|
|
*
|
|
* @param string $key Cache key
|
|
* @return bool
|
|
*/
|
|
public function delete($key)
|
|
{
|
|
if ($this->_redis->{static::$_delete_name}($key) !== 1)
|
|
{
|
|
return FALSE;
|
|
}
|
|
|
|
$this->_redis->{static::$_sRemove_name}('_ci_redis_serialized', $key);
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
// ------------------------------------------------------------------------
|
|
|
|
/**
|
|
* Increment a raw value
|
|
*
|
|
* @param string $id Cache ID
|
|
* @param int $offset Step/value to add
|
|
* @return mixed New value on success or FALSE on failure
|
|
*/
|
|
public function increment($id, $offset = 1)
|
|
{
|
|
return $this->_redis->incrBy($id, $offset);
|
|
}
|
|
|
|
// ------------------------------------------------------------------------
|
|
|
|
/**
|
|
* Decrement a raw value
|
|
*
|
|
* @param string $id Cache ID
|
|
* @param int $offset Step/value to reduce by
|
|
* @return mixed New value on success or FALSE on failure
|
|
*/
|
|
public function decrement($id, $offset = 1)
|
|
{
|
|
return $this->_redis->decrBy($id, $offset);
|
|
}
|
|
|
|
// ------------------------------------------------------------------------
|
|
|
|
/**
|
|
* Clean cache
|
|
*
|
|
* @return bool
|
|
* @see Redis::flushDB()
|
|
*/
|
|
public function clean()
|
|
{
|
|
return $this->_redis->flushDB();
|
|
}
|
|
|
|
// ------------------------------------------------------------------------
|
|
|
|
/**
|
|
* Get cache driver info
|
|
*
|
|
* @param string $type Not supported in Redis.
|
|
* Only included in order to offer a
|
|
* consistent cache API.
|
|
* @return array
|
|
* @see Redis::info()
|
|
*/
|
|
public function cache_info($type = NULL)
|
|
{
|
|
return $this->_redis->info();
|
|
}
|
|
|
|
// ------------------------------------------------------------------------
|
|
|
|
/**
|
|
* Get cache metadata
|
|
*
|
|
* @param string $key Cache key
|
|
* @return array
|
|
*/
|
|
public function get_metadata($key)
|
|
{
|
|
$value = $this->get($key);
|
|
|
|
if ($value !== FALSE)
|
|
{
|
|
return array(
|
|
'expire' => time() + $this->_redis->ttl($key),
|
|
'data' => $value
|
|
);
|
|
}
|
|
|
|
return FALSE;
|
|
}
|
|
|
|
// ------------------------------------------------------------------------
|
|
|
|
/**
|
|
* Check if Redis driver is supported
|
|
*
|
|
* @return bool
|
|
*/
|
|
public function is_supported()
|
|
{
|
|
return extension_loaded('redis');
|
|
}
|
|
|
|
// ------------------------------------------------------------------------
|
|
|
|
/**
|
|
* Class destructor
|
|
*
|
|
* Closes the connection to Redis if present.
|
|
*
|
|
* @return void
|
|
*/
|
|
public function __destruct()
|
|
{
|
|
if ($this->_redis)
|
|
{
|
|
$this->_redis->close();
|
|
}
|
|
}
|
|
}
|