Intercept GuzzleHTTP Request and Response Bodies - php

Question

I have a need to override the GuzzleHTTP\Client to log the request and response bodies. I only have ability to change the client in use. Problem I'm having is these are streams and seems reading the contents (at least for response) breaks the request.
Can you think of another way to intercept request/response bodies via extending the Client?
class MyClient extends GuzzleHTTP\Client {
public function send(RequestInterface $request, array $options = []) {
// This doesn't affect original request for some reason
MyLogger::log($request->getBody()->getContents());
$response = parent::send($request, $options);
// This breaks the original request call, I think because stream is read only once
MyLogger::log($response->getBody()->getContents());
return $response;
}
}

Answer 1

The fix here is to rewind the stream after reading the contents of the response
MyLogger::log($response->getBody()->getContents());
$response->getBody()->rewind();
return $response

Answer 2

Guzzle's middleware framework provides end users with a natural method to perform specific actions under specific criteria without resorting to extending GuzzleHttp\Client
An example of this could be:
use GuzzleHttp\Client;
use GuzzleHttp\HandlerStack;
use GuzzleHttp\MessageFormatter;
use GuzzleHttp\Middleware;
use Monolog\Logger;
$stack = HandlerStack::create();
$stack->push(
Middleware::log(
new Logger('Logger'),
new MessageFormatter('{req_body} - {res_body}')
)
);
$client = new Client([
'debug' => true,
'handler' => $stack,
]);
$r = $client->get('some_random_uri')->getBody();
Documentation is not the best for GuzzleHttp\Middleware::Log() or for GuzzleHttp\MessageFormatter. A complete list of options is available within the MessageFormatter