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<?php
namespace Illuminate\Support;
use Closure;
use InvalidArgumentException;
use RuntimeException;
abstract class MultipleInstanceManager
{
/**
* The application instance.
*
* @var \Illuminate\Contracts\Foundation\Application
*/
protected $app;
/**
* The array of resolved instances.
*
* @var array
*/
protected $instances = [];
/**
* The registered custom instance creators.
*
* @var array
*/
protected $customCreators = [];
/**
* Create a new manager instance.
*
* @param \Illuminate\Contracts\Foundation\Application $app
* @return void
*/
public function __construct($app)
{
$this->app = $app;
}
/**
* Get the default instance name.
*
* @return string
*/
abstract public function getDefaultInstance();
/**
* Set the default instance name.
*
* @param string $name
* @return void
*/
abstract public function setDefaultInstance($name);
/**
* Get the instance specific configuration.
*
* @param string $name
* @return array
*/
abstract public function getInstanceConfig($name);
/**
* Get an instance instance by name.
*
* @param string|null $name
* @return mixed
*/
public function instance($name = null)
{
$name = $name ?: $this->getDefaultInstance();
return $this->instances[$name] = $this->get($name);
}
/**
* Attempt to get an instance from the local cache.
*
* @param string $name
* @return mixed
*/
protected function get($name)
{
return $this->instances[$name] ?? $this->resolve($name);
}
/**
* Resolve the given instance.
*
* @param string $name
* @return mixed
*
* @throws \InvalidArgumentException
*/
protected function resolve($name)
{
$config = $this->getInstanceConfig($name);
if (is_null($config)) {
throw new InvalidArgumentException("Instance [{$name}] is not defined.");
}
if (! array_key_exists('driver', $config)) {
throw new RuntimeException("Instance [{$name}] does not specify a driver.");
}
if (isset($this->customCreators[$config['driver']])) {
return $this->callCustomCreator($config);
} else {
$driverMethod = 'create'.ucfirst($config['driver']).'Driver';
if (method_exists($this, $driverMethod)) {
return $this->{$driverMethod}($config);
} else {
throw new InvalidArgumentException("Instance driver [{$config['driver']}] is not supported.");
}
}
}
/**
* Call a custom instance creator.
*
* @param array $config
* @return mixed
*/
protected function callCustomCreator(array $config)
{
return $this->customCreators[$config['driver']]($this->app, $config);
}
/**
* Unset the given instances.
*
* @param array|string|null $name
* @return $this
*/
public function forgetInstance($name = null)
{
$name ??= $this->getDefaultInstance();
foreach ((array) $name as $instanceName) {
if (isset($this->instances[$instanceName])) {
unset($this->instances[$instanceName]);
}
}
return $this;
}
/**
* Disconnect the given instance and remove from local cache.
*
* @param string|null $name
* @return void
*/
public function purge($name = null)
{
$name ??= $this->getDefaultInstance();
unset($this->instances[$name]);
}
/**
* Register a custom instance creator Closure.
*
* @param string $name
* @param \Closure $callback
* @return $this
*/
public function extend($name, Closure $callback)
{
$this->customCreators[$name] = $callback->bindTo($this, $this);
return $this;
}
/**
* Dynamically call the default instance.
*
* @param string $method
* @param array $parameters
* @return mixed
*/
public function __call($method, $parameters)
{
return $this->instance()->$method(...$parameters);
}
}
Blog Section
Dive into our blog to explore the cutting-edge trends in digital payments and NFC technology. Stay updated on the innovations that are revolutionizing transactions, boosting security, and making payments quicker and more convenient. Learn how these advancements are shaping the future of financial interactions and driving the global transition towards a cashless world.
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