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MultipleInstanceManager.php
169 lines
| 1 | <?php |
| 2 | |
| 3 | namespace IAWP_SCOPED\Illuminate\Support; |
| 4 | |
| 5 | use Closure; |
| 6 | use InvalidArgumentException; |
| 7 | use RuntimeException; |
| 8 | /** @internal */ |
| 9 | abstract class MultipleInstanceManager |
| 10 | { |
| 11 | /** |
| 12 | * The application instance. |
| 13 | * |
| 14 | * @var \Illuminate\Contracts\Foundation\Application |
| 15 | */ |
| 16 | protected $app; |
| 17 | /** |
| 18 | * The array of resolved instances. |
| 19 | * |
| 20 | * @var array |
| 21 | */ |
| 22 | protected $instances = []; |
| 23 | /** |
| 24 | * The registered custom instance creators. |
| 25 | * |
| 26 | * @var array |
| 27 | */ |
| 28 | protected $customCreators = []; |
| 29 | /** |
| 30 | * Create a new manager instance. |
| 31 | * |
| 32 | * @param \Illuminate\Contracts\Foundation\Application $app |
| 33 | * @return void |
| 34 | */ |
| 35 | public function __construct($app) |
| 36 | { |
| 37 | $this->app = $app; |
| 38 | } |
| 39 | /** |
| 40 | * Get the default instance name. |
| 41 | * |
| 42 | * @return string |
| 43 | */ |
| 44 | public abstract function getDefaultInstance(); |
| 45 | /** |
| 46 | * Set the default instance name. |
| 47 | * |
| 48 | * @param string $name |
| 49 | * @return void |
| 50 | */ |
| 51 | public abstract function setDefaultInstance($name); |
| 52 | /** |
| 53 | * Get the instance specific configuration. |
| 54 | * |
| 55 | * @param string $name |
| 56 | * @return array |
| 57 | */ |
| 58 | public abstract function getInstanceConfig($name); |
| 59 | /** |
| 60 | * Get an instance instance by name. |
| 61 | * |
| 62 | * @param string|null $name |
| 63 | * @return mixed |
| 64 | */ |
| 65 | public function instance($name = null) |
| 66 | { |
| 67 | $name = $name ?: $this->getDefaultInstance(); |
| 68 | return $this->instances[$name] = $this->get($name); |
| 69 | } |
| 70 | /** |
| 71 | * Attempt to get an instance from the local cache. |
| 72 | * |
| 73 | * @param string $name |
| 74 | * @return mixed |
| 75 | */ |
| 76 | protected function get($name) |
| 77 | { |
| 78 | return $this->instances[$name] ?? $this->resolve($name); |
| 79 | } |
| 80 | /** |
| 81 | * Resolve the given instance. |
| 82 | * |
| 83 | * @param string $name |
| 84 | * @return mixed |
| 85 | * |
| 86 | * @throws \InvalidArgumentException |
| 87 | */ |
| 88 | protected function resolve($name) |
| 89 | { |
| 90 | $config = $this->getInstanceConfig($name); |
| 91 | if (\is_null($config)) { |
| 92 | throw new InvalidArgumentException("Instance [{$name}] is not defined."); |
| 93 | } |
| 94 | if (!\array_key_exists('driver', $config)) { |
| 95 | throw new RuntimeException("Instance [{$name}] does not specify a driver."); |
| 96 | } |
| 97 | if (isset($this->customCreators[$config['driver']])) { |
| 98 | return $this->callCustomCreator($config); |
| 99 | } else { |
| 100 | $driverMethod = 'create' . \ucfirst($config['driver']) . 'Driver'; |
| 101 | if (\method_exists($this, $driverMethod)) { |
| 102 | return $this->{$driverMethod}($config); |
| 103 | } else { |
| 104 | throw new InvalidArgumentException("Instance driver [{$config['driver']}] is not supported."); |
| 105 | } |
| 106 | } |
| 107 | } |
| 108 | /** |
| 109 | * Call a custom instance creator. |
| 110 | * |
| 111 | * @param array $config |
| 112 | * @return mixed |
| 113 | */ |
| 114 | protected function callCustomCreator(array $config) |
| 115 | { |
| 116 | return $this->customCreators[$config['driver']]($this->app, $config); |
| 117 | } |
| 118 | /** |
| 119 | * Unset the given instances. |
| 120 | * |
| 121 | * @param array|string|null $name |
| 122 | * @return $this |
| 123 | */ |
| 124 | public function forgetInstance($name = null) |
| 125 | { |
| 126 | $name = $name ?? $this->getDefaultInstance(); |
| 127 | foreach ((array) $name as $instanceName) { |
| 128 | if (isset($this->instances[$instanceName])) { |
| 129 | unset($this->instances[$instanceName]); |
| 130 | } |
| 131 | } |
| 132 | return $this; |
| 133 | } |
| 134 | /** |
| 135 | * Disconnect the given instance and remove from local cache. |
| 136 | * |
| 137 | * @param string|null $name |
| 138 | * @return void |
| 139 | */ |
| 140 | public function purge($name = null) |
| 141 | { |
| 142 | $name = $name ?? $this->getDefaultInstance(); |
| 143 | unset($this->instances[$name]); |
| 144 | } |
| 145 | /** |
| 146 | * Register a custom instance creator Closure. |
| 147 | * |
| 148 | * @param string $name |
| 149 | * @param \Closure $callback |
| 150 | * @return $this |
| 151 | */ |
| 152 | public function extend($name, Closure $callback) |
| 153 | { |
| 154 | $this->customCreators[$name] = $callback->bindTo($this, $this); |
| 155 | return $this; |
| 156 | } |
| 157 | /** |
| 158 | * Dynamically call the default instance. |
| 159 | * |
| 160 | * @param string $method |
| 161 | * @param array $parameters |
| 162 | * @return mixed |
| 163 | */ |
| 164 | public function __call($method, $parameters) |
| 165 | { |
| 166 | return $this->instance()->{$method}(...$parameters); |
| 167 | } |
| 168 | } |
| 169 |