Complex classes like HttpClient often do a lot of different things. To break such a class down, we need to identify a cohesive component within that class. A common approach to find such a component is to look for fields/methods that share the same prefixes, or suffixes. You can also have a look at the cohesion graph to spot any un-connected, or weakly-connected components.
Once you have determined the fields that belong together, you can apply the Extract Class refactoring. If the component makes sense as a sub-class, Extract Subclass is also a candidate, and is often faster.
While breaking up the class, it is a good idea to analyze how other classes use HttpClient, and based on these observations, apply Extract Interface, too.
| 1 | <?php |
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| 68 | class HttpClient |
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| 69 | { |
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| 70 | /** |
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| 71 | * The default request options. |
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| 72 | * |
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| 73 | * @var array |
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| 74 | */ |
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| 75 | protected static $defaultOptions = [ |
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| 76 | 'connect_timeout' => 5, |
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| 77 | 'timeout' => 30, |
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| 78 | ]; |
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| 79 | |||
| 80 | /** |
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| 81 | * The Guzzle client. |
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| 82 | * |
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| 83 | * @var \GuzzleHttp\Client |
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| 84 | */ |
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| 85 | protected $client; |
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| 86 | |||
| 87 | /** |
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| 88 | * The request options. |
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| 89 | * |
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| 90 | * @var array |
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| 91 | */ |
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| 92 | protected $options = []; |
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| 93 | |||
| 94 | /** |
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| 95 | * The Guzzle response. |
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| 96 | * |
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| 97 | * @var \GuzzleHttp\Psr7\Response |
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| 98 | */ |
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| 99 | protected $response; |
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| 100 | |||
| 101 | /** |
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| 102 | * Indicate whether to catch Guzzle exceptions. |
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| 103 | * |
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| 104 | * @var bool |
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| 105 | */ |
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| 106 | protected $catchExceptions = true; |
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| 107 | |||
| 108 | /** |
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| 109 | * Get the default request options. |
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| 110 | * |
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| 111 | * @return array |
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| 112 | */ |
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| 113 | 26 | public static function defaultOptions() |
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| 114 | { |
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| 115 | 26 | return static::$defaultOptions; |
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| 116 | } |
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| 117 | |||
| 118 | /** |
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| 119 | * Set the default request options. |
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| 120 | * |
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| 121 | * @param array $options |
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| 122 | * @return void |
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| 123 | */ |
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| 124 | 27 | public static function setDefaultOptions(array $options) |
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| 125 | { |
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| 126 | 27 | static::$defaultOptions = $options; |
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| 127 | 27 | } |
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| 128 | |||
| 129 | /** |
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| 130 | * Create a http client instance. |
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| 131 | * |
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| 132 | * @param array|string|\Psr\Http\Message\UriInterface $options base URI or any request options |
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| 133 | * |
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| 134 | * @throws \InvalidArgumentException |
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| 135 | */ |
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| 136 | 26 | public function __construct($options = []) |
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| 137 | { |
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| 138 | 26 | if (is_string($options) || $options instanceof UriInterface) { |
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| 139 | 1 | $options = ['base_uri' => $options]; |
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| 140 | 25 | } elseif (! is_array($options)) { |
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| 141 | 1 | throw new InvalidArgumentException('Options must be a string, UriInterface, or an array'); |
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| 142 | } |
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| 143 | |||
| 144 | 25 | $this->client = new Client( |
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| 145 | 25 | array_replace_recursive(static::defaultOptions(), $options) |
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| 146 | ); |
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| 147 | |||
| 148 | 25 | $this->options = $this->client->getConfig(); |
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| 149 | 25 | } |
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| 150 | |||
| 151 | /** |
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| 152 | * Get the Guzzle client instance. |
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| 153 | * |
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| 154 | * @return \GuzzleHttp\Client |
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| 155 | */ |
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| 156 | 4 | public function getClient() |
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| 157 | { |
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| 158 | 4 | return $this->client; |
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| 159 | } |
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| 160 | |||
| 161 | /** |
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| 162 | * Get whether to catch Guzzle exceptions or not. |
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| 163 | * |
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| 164 | * @return bool |
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| 165 | */ |
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| 166 | 1 | public function areExceptionsCaught() |
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| 167 | { |
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| 168 | 1 | return $this->catchExceptions; |
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| 169 | } |
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| 170 | |||
| 171 | /** |
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| 172 | * Set whether to catch Guzzle exceptions or not. |
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| 173 | * |
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| 174 | * @param bool $catch |
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| 175 | * @return $this |
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| 176 | */ |
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| 177 | 2 | public function catchExceptions($catch) |
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| 178 | { |
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| 179 | 2 | $this->catchExceptions = (bool) $catch; |
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| 180 | |||
| 181 | 2 | return $this; |
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| 182 | } |
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| 183 | |||
| 184 | /** |
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| 185 | * Get the request options using "dot" notation. |
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| 186 | * |
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| 187 | * @param string|null $key |
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| 188 | * @return mixed |
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| 189 | */ |
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| 190 | 11 | public function getOption($key = null) |
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| 194 | |||
| 195 | /** |
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| 196 | * Set the request options using "dot" notation. |
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| 197 | * |
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| 198 | * @param string|array $key |
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| 199 | * @param mixed $value |
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| 200 | * @return $this |
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| 201 | */ |
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| 202 | 8 | public function option($key, $value = null) |
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| 212 | |||
| 213 | /** |
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| 214 | * Merge the given options to the request options. |
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| 215 | * |
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| 216 | * @param array ...$options |
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| 217 | * @return $this |
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| 218 | */ |
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| 219 | 1 | public function mergeOptions(array ...$options) |
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| 225 | |||
| 226 | /** |
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| 227 | * Remove one or many request options using "dot" notation. |
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| 228 | * |
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| 229 | * @param array|string $keys |
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| 230 | * @return $this |
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| 231 | */ |
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| 232 | 2 | public function removeOption($keys) |
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| 238 | |||
| 239 | /** |
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| 240 | * Set a request header. |
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| 241 | * |
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| 242 | * @param string $name |
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| 243 | * @param mixed $value |
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| 244 | * @return $this |
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| 245 | */ |
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| 246 | 5 | public function header($name, $value) |
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| 250 | |||
| 251 | /** |
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| 252 | * Set the request content type. |
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| 253 | * |
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| 254 | * @param string $type |
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| 255 | * @return $this |
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| 256 | */ |
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| 257 | 1 | public function contentType($type) |
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| 261 | |||
| 262 | /** |
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| 263 | * Set the request accept type. |
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| 264 | * |
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| 265 | * @param string $type |
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| 266 | * @return $this |
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| 267 | */ |
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| 268 | 3 | public function accept($type) |
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| 272 | |||
| 273 | /** |
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| 274 | * Set the request accept type to "application/json". |
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| 275 | * |
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| 276 | * @return $this |
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| 277 | */ |
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| 278 | 1 | public function acceptJson() |
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| 282 | |||
| 283 | /** |
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| 284 | * Specify where the body of the response will be saved. |
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| 285 | * Set the "sink" option. |
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| 286 | * |
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| 287 | * @param string|resource|\Psr\Http\Message\StreamInterface $dest |
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| 288 | * @return $this |
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| 289 | */ |
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| 290 | 1 | public function saveTo($dest) |
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| 294 | |||
| 295 | /** |
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| 296 | * Get the Guzzle response instance. |
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| 297 | * |
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| 298 | * @return \GuzzleHttp\Psr7\Response|null |
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| 299 | */ |
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| 300 | 3 | public function getResponse() |
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| 304 | |||
| 305 | /** |
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| 306 | * Get data from the response. |
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| 307 | * |
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| 308 | * @param string|\Closure $callback |
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| 309 | * @param array $parameters |
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| 310 | * @param mixed $default |
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| 311 | * @return mixed |
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| 312 | */ |
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| 313 | 5 | protected function getResponseData($callback, array $parameters = [], $default = null) |
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| 323 | |||
| 324 | /** |
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| 325 | * Get the response content. |
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| 326 | * |
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| 327 | * @return string |
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| 328 | */ |
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| 329 | 4 | public function getContent() |
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| 333 | |||
| 334 | /** |
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| 335 | * Get the JSON-decoded response content. |
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| 336 | * |
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| 337 | * @param bool $assoc |
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| 338 | * @return mixed |
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| 339 | */ |
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| 340 | 2 | public function getJsonContent($assoc = true) |
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| 344 | |||
| 345 | /** |
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| 346 | * Make request to a URI. |
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| 347 | * |
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| 348 | * @param string|\Psr\Http\Message\UriInterface $uri |
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| 349 | * @param string $method |
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| 350 | * @param array $options |
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| 351 | * @return $this |
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| 352 | */ |
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| 353 | 10 | public function request($uri = '', $method = 'GET', array $options = []) |
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| 370 | |||
| 371 | /** |
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| 372 | * Make request to a URI, expecting JSON content. |
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| 373 | * |
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| 374 | * @param string|\Psr\Http\Message\UriInterface $uri |
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| 375 | * @param string $method |
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| 376 | * @param array $options |
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| 377 | * @return $this |
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| 378 | */ |
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| 379 | 4 | public function requestJson($uri = '', $method = 'GET', array $options = []) |
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| 387 | |||
| 388 | /** |
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| 389 | * Add JSON type to the "Accept" header for the request options. |
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| 390 | * |
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| 391 | * @param array $options |
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| 392 | * @return array |
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| 393 | */ |
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| 394 | 4 | protected function addAcceptableJsonType(array $options) |
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| 405 | |||
| 406 | /** |
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| 407 | * Request the URI and return the response content. |
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| 408 | * |
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| 409 | * @param string|\Psr\Http\Message\UriInterface $uri |
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| 410 | * @param string $method |
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| 411 | * @param array $options |
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| 412 | * @return string |
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| 413 | */ |
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| 414 | 1 | public function fetchContent($uri = '', $method = 'GET', array $options = []) |
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| 418 | |||
| 419 | /** |
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| 420 | * Request the URI and return the JSON-decoded response content. |
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| 421 | * |
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| 422 | * @param string|\Psr\Http\Message\UriInterface $uri |
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| 423 | * @param string $method |
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| 424 | * @param array $options |
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| 425 | * @return mixed |
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| 426 | */ |
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| 427 | 1 | public function fetchJson($uri = '', $method = 'GET', array $options = []) |
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| 431 | |||
| 432 | /** |
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| 433 | * Get all allowed magic request methods. |
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| 434 | * |
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| 435 | * @return array |
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| 436 | */ |
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| 437 | 9 | protected function getMagicRequestMethods() |
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| 443 | |||
| 444 | /** |
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| 445 | * Determine if the given method is a magic request method. |
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| 446 | * |
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| 447 | * @param string $method |
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| 448 | * @param string &$requestMethod |
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| 449 | * @param string &$httpMethod |
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| 450 | * @return bool |
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| 451 | */ |
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| 452 | 9 | protected function isMagicRequestMethod($method, &$requestMethod, &$httpMethod) |
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| 470 | |||
| 471 | /** |
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| 472 | * Get parameters for $this->request() from the magic request methods. |
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| 473 | * |
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| 474 | * @param string $httpMethod |
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| 475 | * @param array $parameters |
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| 476 | * @return array |
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| 477 | */ |
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| 478 | 2 | protected function getRequestParameters($httpMethod, array $parameters) |
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| 488 | |||
| 489 | /** |
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| 490 | * Get all allowed magic response methods. |
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| 491 | * |
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| 492 | * @return array |
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| 493 | */ |
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| 494 | 7 | protected function getMagicResponseMethods() |
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| 501 | |||
| 502 | /** |
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| 503 | * Get all allowed magic option methods. |
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| 504 | * |
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| 505 | * @return array |
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| 506 | */ |
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| 507 | 2 | protected function getMagicOptionMethods() |
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| 521 | |||
| 522 | /** |
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| 523 | * Get the option key for the given magic option method. |
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| 524 | * |
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| 525 | * @param string $method |
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| 526 | * @return string|null |
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| 527 | */ |
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| 528 | 2 | protected function getOptionKeyForMethod($method) |
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| 534 | |||
| 535 | /** |
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| 536 | * Handle magic method to send request, get response data, or set |
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| 537 | * request options. |
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| 538 | * |
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| 539 | * @param string $method |
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| 540 | * @param array $parameters |
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| 541 | * @return mixed |
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| 542 | * |
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| 543 | * @throws \InvalidArgumentException |
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| 544 | * @throws \BadMethodCallException |
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| 545 | */ |
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| 546 | 9 | public function __call($method, $parameters) |
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| 568 | } |
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| 569 |
Our type inference engine has found an assignment to a property that is incompatible with the declared type of that property.
Either this assignment is in error or the assigned type should be added to the documentation/type hint for that property..