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- 06.01.2017
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Middleware.php
01 <?php
02 namespace GuzzleHttp\Ring\Client;
03
04 /**
05 * Provides basic middleware wrappers.
06 *
07 * If a middleware is more complex than a few lines of code, then it should
08 * be implemented in a class rather than a static method.
09 */
10 class Middleware
11 {
12 /**
13 * Sends future requests to a future compatible handler while sending all
14 * other requests to a default handler.
15 *
16 * When the "future" option is not provided on a request, any future responses
17 * are automatically converted to synchronous responses and block.
18 *
19 * @param callable $default Handler used for non-streaming responses
20 * @param callable $future Handler used for future responses
21 *
22 * @return callable Returns the composed handler.
23 */
24 public static function wrapFuture(
25 callable $default,
26 callable $future
27 ) {
28 return function (array $request) use ($default, $future) {
29 return empty($request['client']['future'])
30 ? $default($request)
31 : $future($request);
32 };
33 }
34
35 /**
36 * Sends streaming requests to a streaming compatible handler while sendin
37 * all other requests to a default handler.
38 *
39 * This, for example, could be useful for taking advantage of the
40 * performance benefits of curl while still supporting true streaming
41 * through the StreamHandler.
42 *
43 * @param callable $default Handler used for non-streaming responses
44 * @param callable $streaming Handler used for streaming responses
45 *
46 * @return callable Returns the composed handler.
47 */
48 public static function wrapStreaming(
49 callable $default,
50 callable $streaming
51 ) {
52 return function (array $request) use ($default, $streaming) {
53 return empty($request['client']['stream'])
54 ? $default($request)
55 : $streaming($request);
56 };
57 }
58 }
59