/**
* Source: http://fideloper.com/laravel-http-middleware.
*/
public function handle($request, Closure $next)
{
$limit = $this->config->get('api.ratelimit.requests');
$time = $this->config->get('api.ratelimit.time');
// Rate limit by IP address
$key = sprintf('api:%s', $request->get('key'));
// Add if doesn't exist
$this->cache->add($key, 0, $time);
// Add to count
$count = $this->cache->increment($key);
if ($count > $limit) {
throw new TooManyRequestsHttpException($time * 60, 'Rate limit exceed.');
}
return $next($request);
}
/**
* Increment the hit counter for the cache key.
*
* @param string $key
*
* @return bool
*/
public function addHit($key)
{
if (!$this->cache->has($this->getKey($key))) {
return $this->cache->add($this->getKey($key), 1, 1);
}
return $this->cache->increment($this->getKey($key), 1);
}
/**
* Increment the counter for a given key for a given decay time.
*
* @param string $key
* @param int $decayMinutes
* @return int
*/
public function hit($key, $decayMinutes = 1)
{
$this->cache->add($key, 1, $decayMinutes);
return (int) $this->cache->increment($key);
}
/**
* Increment the number of failed attempts.
*
* @author Andrea Marco Sartori
* @return void
*/
public function incrementAttempts()
{
$this->cache->add($this->key, 0, $this->getExpiry());
$this->cache->increment($this->key);
}
