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<?php
namespace Illuminate\Redis\Connections;
use Closure;
use Illuminate\Contracts\Events\Dispatcher;
use Illuminate\Redis\Events\CommandExecuted;
use Illuminate\Redis\Limiters\DurationLimiterBuilder;
use Illuminate\Redis\Limiters\ConcurrencyLimiterBuilder;
/**
* @mixin \Predis\Client
*/
abstract class Connection
{
/**
* The Predis client.
*
* @var \Predis\Client
*/
protected $client;
/**
* The Redis connection name.
*
* @var string|null
*/
protected $name;
/**
* The event dispatcher instance.
*
* @var \Illuminate\Contracts\Events\Dispatcher
*/
protected $events;
/**
* Subscribe to a set of given channels for messages.
*
* @param array|string $channels
* @param \Closure $callback
* @param string $method
* @return void
*/
abstract public function createSubscription($channels, Closure $callback, $method = 'subscribe');
/**
* Funnel a callback for a maximum number of simultaneous executions.
*
* @param string $name
* @return \Illuminate\Redis\Limiters\ConcurrencyLimiterBuilder
*/
public function funnel($name)
{
return new ConcurrencyLimiterBuilder($this, $name);
}
/**
* Throttle a callback for a maximum number of executions over a given duration.
*
* @param string $name
* @return \Illuminate\Redis\Limiters\DurationLimiterBuilder
*/
public function throttle($name)
{
return new DurationLimiterBuilder($this, $name);
}
/**
* Get the underlying Redis client.
*
* @return mixed
*/
public function client()
{
return $this->client;
}
/**
* Subscribe to a set of given channels for messages.
*
* @param array|string $channels
* @param \Closure $callback
* @return void
*/
public function subscribe($channels, Closure $callback)
{
return $this->createSubscription($channels, $callback, __FUNCTION__);
}
/**
* Subscribe to a set of given channels with wildcards.
*
* @param array|string $channels
* @param \Closure $callback
* @return void
*/
public function psubscribe($channels, Closure $callback)
{
return $this->createSubscription($channels, $callback, __FUNCTION__);
}
/**
* Run a command against the Redis database.
*
* @param string $method
* @param array $parameters
* @return mixed
*/
public function command($method, array $parameters = [])
{
$start = microtime(true);
$result = $this->client->{$method}(...$parameters);
$time = round((microtime(true) - $start) * 1000, 2);
if (isset($this->events)) {
$this->event(new CommandExecuted($method, $parameters, $time, $this));
}
return $result;
}
/**
* Fire the given event if possible.
*
* @param mixed $event
* @return void
*/
protected function event($event)
{
if (isset($this->events)) {
$this->events->dispatch($event);
}
}
/**
* Register a Redis command listener with the connection.
*
* @param \Closure $callback
* @return void
*/
public function listen(Closure $callback)
{
if (isset($this->events)) {
$this->events->listen(CommandExecuted::class, $callback);
}
}
/**
* Get the connection name.
*
* @return string|null
*/
public function getName()
{
return $this->name;
}
/**
* Set the connections name.
*
* @param string $name
* @return $this
*/
public function setName($name)
{
$this->name = $name;
return $this;
}
/**
* Get the event dispatcher used by the connection.
*
* @return \Illuminate\Contracts\Events\Dispatcher
*/
public function getEventDispatcher()
{
return $this->events;
}
/**
* Set the event dispatcher instance on the connection.
*
* @param \Illuminate\Contracts\Events\Dispatcher $events
* @return void
*/
public function setEventDispatcher(Dispatcher $events)
{
$this->events = $events;
}
/**
* Unset the event dispatcher instance on the connection.
*
* @return void
*/
public function unsetEventDispatcher()
{
$this->events = null;
}
/**
* Pass other method calls down to the underlying client.
*
* @param string $method
* @param array $parameters
* @return mixed
*/
public function __call($method, $parameters)
{
return $this->command($method, $parameters);
}
}