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<?php
namespace GuzzleHttp\Ring\Client;
/**
* Provides basic middleware wrappers.
*
* If a middleware is more complex than a few lines of code, then it should
* be implemented in a class rather than a static method.
*/
class Middleware
{
/**
* Sends future requests to a future compatible handler while sending all
* other requests to a default handler.
*
* When the "future" option is not provided on a request, any future responses
* are automatically converted to synchronous responses and block.
*
* @param callable $default Handler used for non-streaming responses
* @param callable $future Handler used for future responses
*
* @return callable Returns the composed handler.
*/
public static function wrapFuture(
callable $default,
callable $future
) {
return function (array $request) use ($default, $future) {
return empty($request['client']['future'])
? $default($request)
: $future($request);
};
}
/**
* Sends streaming requests to a streaming compatible handler while sendin
* all other requests to a default handler.
*
* This, for example, could be useful for taking advantage of the
* performance benefits of curl while still supporting true streaming
* through the StreamHandler.
*
* @param callable $default Handler used for non-streaming responses
* @param callable $streaming Handler used for streaming responses
*
* @return callable Returns the composed handler.
*/
public static function wrapStreaming(
callable $default,
callable $streaming
) {
return function (array $request) use ($default, $streaming) {
return empty($request['client']['stream'])
? $default($request)
: $streaming($request);
};
}
}
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