Developer
<?php
namespace GuzzleHttp;
use GuzzleHttp\Promise as P;
use GuzzleHttp\Promise\PromiseInterface;
use Psr\Http\Message\RequestInterface;
use Psr\Http\Message\ResponseInterface;
/**
* Middleware that retries requests based on the boolean result of
* invoking the provided "decider" function.
*
* @final
*/
class RetryMiddleware
{
/**
* @var callable(RequestInterface, array): PromiseInterface
*/
private $nextHandler;
/**
* @var callable
*/
private $decider;
/**
* @var callable(int)
*/
private $delay;
/**
* @param callable $decider Function that accepts the number of retries,
* a request, [response], and [exception] and
* returns true if the request is to be
* retried.
* @param callable(RequestInterface, array): PromiseInterface $nextHandler Next handler to invoke.
* @param (callable(int): int)|null $delay Function that accepts the number of retries
* and returns the number of
* milliseconds to delay.
*/
public function __construct(callable $decider, callable $nextHandler, callable $delay = null)
{
$this->decider = $decider;
$this->nextHandler = $nextHandler;
$this->delay = $delay ?: __CLASS__.'::exponentialDelay';
}
/**
* Default exponential backoff delay function.
*
* @return int milliseconds.
*/
public static function exponentialDelay(int $retries): int
{
return (int) 2 ** ($retries - 1) * 1000;
}
public function __invoke(RequestInterface $request, array $options): PromiseInterface
{
if (!isset($options['retries'])) {
$options['retries'] = 0;
}
$fn = $this->nextHandler;
return $fn($request, $options)
->then(
$this->onFulfilled($request, $options),
$this->onRejected($request, $options)
);
}
/**
* Execute fulfilled closure
*/
private function onFulfilled(RequestInterface $request, array $options): callable
{
return function ($value) use ($request, $options) {
if (!($this->decider)(
$options['retries'],
$request,
$value,
null
)) {
return $value;
}
return $this->doRetry($request, $options, $value);
};
}
/**
* Execute rejected closure
*/
private function onRejected(RequestInterface $req, array $options): callable
{
return function ($reason) use ($req, $options) {
if (!($this->decider)(
$options['retries'],
$req,
null,
$reason
)) {
return P\Create::rejectionFor($reason);
}
return $this->doRetry($req, $options);
};
}
private function doRetry(RequestInterface $request, array $options, ResponseInterface $response = null): PromiseInterface
{
$options['delay'] = ($this->delay)(++$options['retries'], $response, $request);
return $this($request, $options);
}
}
Developer
Get access token to initiates payment transaction.
| Parameter | Type | Comments |
|---|---|---|
| client_id | string | Enter merchant API client/primary key |
| secret_id | string | Enter merchant API secret key |
| env | string | Enter merchant API environment |
| merchant_id | string | Enter merchant API merchant id |
Request Example (guzzle)
<?php
require_once('vendor/autoload.php');
$client = new \GuzzleHttp\Client();
$response = $client->request('POST', $base_url. 'v1/generate-token', [
'headers' => [
'accept' => 'application/json',
'content-type' => 'application/json',
],
'form_params' => [
'client_id' => '$client_id',
'secret_id' => 'secret_id',
'env' => 'env',
'merchant_id' => 'merchant_id',
],
]);
echo $response->getBody();
**Response: SUCCESS (200 OK)**
{
"message": {
"success": [
"Successfully token is generated"
]
},
"data": {
"token":"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
IyZmQzNDY1IiwidGFnIjoiIn0=",
},
"type": "success"
}
**Response: ERROR (400 FAILED)**
{
"message": {
"error": [
"Invalid credentials."
]
},
"data": null,
"type": "error"
}