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<?php |
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namespace cvweiss; |
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class Guzzler |
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{ |
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private $curl; |
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private $handler; |
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private $client; |
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private $concurrent = 0; |
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private $maxConcurrent; |
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private $usleep; |
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private $lastHeaders = []; |
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public function __construct($maxConcurrent = 10, $usleep = 100000, $userAgent = 'cvweiss/guzzler/', $curlOptions = []) |
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{ |
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$curlOptions = $curlOptions == [] ? [CURLOPT_FRESH_CONNECT => false] : $curlOptions; |
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$this->curl = new \GuzzleHttp\Handler\CurlMultiHandler(); |
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$this->handler = \GuzzleHttp\HandlerStack::create($this->curl); |
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$this->client = new \GuzzleHttp\Client(['curl' => $curlOptions, 'connect_timeout' => 10, 'timeout' => 10, 'handler' => $this->handler, 'User-Agent' => $userAgent]); |
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$this->maxConcurrent = max($maxConcurrent, 1); |
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$this->usleep = max(0, min(1000000, (int) $usleep)); |
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} |
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public function isSetDefault($arr, $key, $default) |
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{ |
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return isset($arr[$key]) ? $arr[$key] : $default; |
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} |
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public function tick() |
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{ |
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$ms = microtime(); |
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do { |
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$this->curl->tick(); |
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if ($this->concurrent >= $this->maxConcurrent) usleep(max(1, min(1000000, $this->usleep))); |
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} while ($this->concurrent >= $this->maxConcurrent); |
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return max(0, microtime() - $ms); |
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} |
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public function finish() |
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{ |
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$ms = microtime(); |
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$this->curl->execute(); |
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return max(0, microtime() - $ms); |
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} |
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public function inc() |
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{ |
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$this->concurrent++; |
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} |
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public function dec() |
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{ |
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$this->concurrent--; |
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} |
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public function call($uri, $fulfilled, $rejected, $params = [], $setup = [], $callType = 'GET', $body = null) |
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{ |
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$this->verifyCallable($fulfilled); |
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$this->verifyCallable($rejected); |
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$params['uri'] = $uri; |
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$params['fulfilled'] = $fulfilled; |
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$params['rejected'] = $rejected; |
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$params['setup'] = $setup; |
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$params['callType'] = $callType; |
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$params['body'] = $body; |
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$redis = $this->applyEtag($setup, $params); |
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$guzzler = $this; |
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$request = new \GuzzleHttp\Psr7\Request($callType, $uri, $setup, $body); |
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$this->client->sendAsync($request)->then( |
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function($response) use (&$guzzler, $fulfilled, &$params, $redis) { |
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$guzzler->dec(); |
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$content = (string) $response->getBody(); |
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$this->lastHeaders = array_change_key_case($response->getHeaders()); |
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$this->applyEtagPost($this->lastHeaders, $params['uri'], $content, $redis); |
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$fulfilled($guzzler, $params, $content); |
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}, |
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function($connectionException) use (&$guzzler, &$rejected, &$params) { |
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$guzzler->dec(); |
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$response = $connectionException->getResponse(); |
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$this->lastHeaders = $response == null ? [] : array_change_key_case($response->getHeaders()); |
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$params['content'] = method_exists($response, "getBody") ? (string) $response->getBody() : ""; |
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$rejected($guzzler, $params, $connectionException); |
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}); |
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$this->inc(); |
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$this->tick(); |
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} |
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protected function applyEtag(&$setup, $params) |
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{ |
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$redis = isset($setup['etag']) ? $setup['etag'] : null; |
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if ($redis !== null && $params['callType'] == 'GET') { |
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$etag = $redis->get("guzzler:etags:" . $params['uri']); |
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if ($etag != "") $setup['If-None-Match'] = $etag; |
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} |
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unset($setup['etag']); |
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return $redis; |
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} |
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protected function applyEtagPost($headers, $uri, $content, $redis) |
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{ |
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if (isset($headers['etag']) && strlen($content) == 0 && $redis !== null) { |
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$redis->setex("guzzler:etags:$uri", 604800, $headers['etag'][0]); |
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} |
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} |
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public function verifyCallable($callable) |
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{ |
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if (!is_callable($callable)) { |
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throw new \InvalidArgumentException(print_r($callable, true) . " is not a callable function"); |
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} |
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} |
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public function getLastHeaders() |
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{ |
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return $this->lastHeaders; |
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} |
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} |
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cvweiss /
guzzler
