Handle Guzzle Exception and Get Http Body

Handle Guzzle exception and get HTTP body

Guzzle 3.x

Per the docs, you can catch the appropriate exception type (ClientErrorResponseException for 4xx errors) and call its getResponse() method to get the response object, then call getBody() on that:

use Guzzle\Http\Exception\ClientErrorResponseException;

...

try {
    $response = $request->send();
} catch (ClientErrorResponseException $exception) {
    $responseBody = $exception->getResponse()->getBody(true);
}

Passing true to the getBody function indicates that you want to get the response body as a string. Otherwise you will get it as instance of class Guzzle\Http\EntityBody.

Catch Guzzle Exception and return string

Try to use exception hierarchy to catch any exception. ClientException only catches status code between 400x-499. To catch other exception or catch within the same Exception you can use RequestException.

public static function get_list($list_id)
    {
        $lists = self::get_lists();
        $params = [
            'list.fields' => 'created_at,follower_count,member_count,private,description,owner_id',
            'user.fields' => 'created_at,description,entities,id,location,name,pinned_tweet_id,profile_image_url,protected,public_metrics,url,username,verified,withheld'
        ];
        try {
            $list = $lists->get($list_id, $params);
            if($list->getStatusCode() == 200)){
                $return_list = json_decode($list->getBody(),true);
            }
        } catch (\GuzzleHttp\Exception\ClientException $e) {
            $error['error'] = $e->getMessage();
            $error['request'] = $e->getRequest();
            if($e->hasResponse()){
              // you can pass a specific status code to catch a particular error here I have catched 400 Bad Request. 
              if ($e->getResponse()->getStatusCode() == '400'){
                 $error['response'] = $e->getResponse(); 
              }
            }
            return $error;
        } catch(\GuzzleHttp\Exception\RequestException $se){
            $error['error'] = $e->getMessage();
            $error['request'] = $e->getRequest();
            return $error;
        } catch(Exception $e){
           //other errors 
        }

        return $list;
    }

Catching exceptions from Guzzle

If the Exception is being thrown in that try block then at worst case scenario Exception should be catching anything uncaught.

Consider that the first part of the test is throwing the Exception and wrap that in the try block as well.

How to Retrieve Form Parameters sent on a Guzzle Exception?

The form encoded parameters can be found on Request Body.

try {
    $reponse = $this->client->post($uri, [
        'form_params' => $params,
        'headers' => $this->getHeaders()
    ]);
} catch (RequestException $e){
     echo (string) $e->getRequest()->getBody();
}

Guzzle: Can't catch exception details

The exception should be an instance of BadResponseException which has a getResponse method. You can then cast the response body to a string.

$response = json_decode($ex->getResponse()->getBody()->getContents(), true);

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