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<?php |
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namespace ClickHouseDB\Transport; |
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use ClickHouseDB\Exception\TransportException; |
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class CurlerRolling |
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{ |
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const SLEEP_DELAY = 1000; // 1ms |
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/** |
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* @var int |
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* |
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* Max number of simultaneous requests. |
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*/ |
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private $simultaneousLimit = 10; |
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/** |
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* @var array |
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* |
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* Requests currently being processed by curl |
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*/ |
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private $activeRequests = []; |
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/** |
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* @var int |
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*/ |
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private $runningRequests = 0; |
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/** |
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* @var CurlerRequest[] |
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* |
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* Requests queued to be processed |
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*/ |
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private $pendingRequests = []; |
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/** |
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* @return int |
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*/ |
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private $completedRequestCount = 0; |
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/** |
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* @var null|resource |
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*/ |
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private $_pool_master = null; |
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/** |
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* @var int |
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*/ |
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private $waitRequests = 0; |
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/** |
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* @var array |
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*/ |
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private $handleMapTasks = []; |
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/** |
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* |
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*/ |
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public function __destruct() |
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{ |
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$this->close(); |
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} |
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/** |
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* @return resource |
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*/ |
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10 |
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private function handlerMulti() |
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{ |
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10 |
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if (!$this->_pool_master) { |
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$this->_pool_master = curl_multi_init(); |
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if (function_exists('curl_multi_setopt')) { |
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curl_multi_setopt($this->_pool_master, CURLMOPT_MAXCONNECTS, $this->simultaneousLimit); |
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} |
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} |
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return $this->_pool_master; |
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} |
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/** |
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* |
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*/ |
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public function close() |
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{ |
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if ($this->_pool_master) { |
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curl_multi_close($this->handlerMulti()); |
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} |
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} |
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/** |
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* @param CurlerRequest $req |
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* @param bool $checkMultiAdd |
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* @param bool $force |
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* @return bool |
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* @throws TransportException |
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*/ |
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public function addQueLoop(CurlerRequest $req, $checkMultiAdd = true, $force = false) |
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{ |
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$id = $req->getId(); |
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if (!$id) { |
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$id = $req->getUniqHash($this->completedRequestCount); |
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} |
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if (!$force && isset($this->pendingRequests[$id])) { |
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if (!$checkMultiAdd) { |
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return false; |
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} |
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throw new TransportException("Cant add exists que - cant overwrite : $id!\n"); |
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} |
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$this->pendingRequests[$id] = $req; |
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return true; |
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} |
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/** |
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* @param resource $oneHandle |
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* @return CurlerResponse |
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*/ |
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private function makeResponse($oneHandle) |
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{ |
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$response = curl_multi_getcontent($oneHandle); |
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$header_size = curl_getinfo($oneHandle, CURLINFO_HEADER_SIZE); |
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$header = substr($response ?? '', 0, $header_size); |
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$body = substr($response ?? '', $header_size); |
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$n = new CurlerResponse(); |
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$n->_headers = $this->parse_headers_from_curl_response($header); |
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$n->_body = $body; |
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$n->_info = curl_getinfo($oneHandle); |
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$n->_error = curl_error($oneHandle); |
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$n->_errorNo = curl_errno($oneHandle); |
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$n->_useTime = 0; |
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return $n; |
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} |
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/** |
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* @return bool |
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* @throws TransportException |
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*/ |
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public function execLoopWait() |
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{ |
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do { |
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$this->exec(); |
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usleep(self::SLEEP_DELAY); |
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} while (($this->countActive() + $this->countPending()) > 0); |
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return true; |
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} |
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/** |
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* @param string $response |
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* @return array |
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*/ |
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private function parse_headers_from_curl_response($response) |
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{ |
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$headers = []; |
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$header_text = $response; |
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foreach (explode("\r\n", $header_text) as $i => $line) { |
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if ($i === 0) { |
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$headers['http_code'] = $line; |
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} else { |
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$r = explode(': ', $line); |
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if (sizeof($r) == 2) { |
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$headers[$r[0]] = $r[1]; |
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} |
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} |
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} |
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return $headers; |
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} |
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/** |
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* @return int |
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*/ |
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public function countPending() |
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{ |
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return sizeof($this->pendingRequests); |
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} |
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/** |
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* @return int |
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*/ |
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public function countActive() |
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{ |
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return count($this->activeRequests); |
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} |
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195
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/** |
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* @return int |
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*/ |
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public function countCompleted() |
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{ |
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return $this->completedRequestCount; |
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} |
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203
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/** |
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* Set the limit for how many cURL requests will be execute simultaneously. |
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* |
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* Please be mindful that if you set this too high, requests are likely to fail |
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207
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* more frequently or automated software may perceive you as a DOS attack and |
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* automatically block further requests. |
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* |
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* @param int $count |
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* @throws \InvalidArgumentException |
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* @return $this |
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*/ |
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public function setSimultaneousLimit($count) |
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{ |
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if (!is_int($count) || $count < 2) { |
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throw new \InvalidArgumentException("setSimultaneousLimit count must be an int >= 2"); |
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} |
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$this->simultaneousLimit = $count; |
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return $this; |
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} |
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224
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/** |
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* @return int |
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*/ |
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10 |
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public function getSimultaneousLimit() |
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{ |
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10 |
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return $this->simultaneousLimit; |
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} |
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/** |
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* @return int |
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234
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*/ |
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public function getRunningRequests() |
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236
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{ |
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return $this->runningRequests; |
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} |
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240
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/** |
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* @param CurlerRequest $request |
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242
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* @param bool $auto_close |
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243
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* @return mixed |
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244
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* @throws TransportException |
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245
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*/ |
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246
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49 |
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public function execOne(CurlerRequest $request, $auto_close = false) |
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247
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{ |
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248
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49 |
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$h = $request->handle(); |
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249
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49 |
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curl_exec($h); |
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250
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251
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49 |
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$request->setResponse($this->makeResponse($h)); |
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252
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253
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49 |
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if ($auto_close) { |
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254
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4 |
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$request->close(); |
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255
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} |
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256
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257
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49 |
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return $request->response()->http_code(); |
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258
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} |
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259
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260
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/** |
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261
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* @return string |
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262
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*/ |
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263
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public function getInfo() |
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264
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{ |
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265
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return "runningRequests = {$this->runningRequests} , pending=" . sizeof($this->pendingRequests) . " "; |
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266
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} |
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267
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268
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/** |
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269
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* @throws TransportException |
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270
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*/ |
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271
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10 |
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public function exec() |
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272
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{ |
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273
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10 |
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$this->makePendingRequestsQue(); |
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274
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275
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// ensure we're running |
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276
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// a request was just completed -- find out which one |
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277
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278
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10 |
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while (($execrun = curl_multi_exec($this->handlerMulti(), $running)) == CURLM_CALL_MULTI_PERFORM); |
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279
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280
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10 |
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if ($execrun != CURLM_OK) { |
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281
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throw new TransportException("[ NOT CURLM_OK ]"); |
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282
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} |
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283
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284
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10 |
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$this->runningRequests = $running; |
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285
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286
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10 |
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while ($done = curl_multi_info_read($this->handlerMulti())) { |
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287
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10 |
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$response = $this->makeResponse($done['handle']); |
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288
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289
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// send the return values to the callback function. |
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290
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291
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292
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10 |
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if (is_object($done['handle'])) { |
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293
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$key = spl_object_id( $done['handle'] ); |
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294
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} else { |
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295
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10 |
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$key = (string) $done['handle'] ; |
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296
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} |
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297
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298
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10 |
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$task_id = $this->handleMapTasks[$key]; |
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299
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10 |
|
$request = $this->pendingRequests[$this->handleMapTasks[$key]]; |
|
300
|
|
|
|
|
301
|
10 |
|
unset($this->handleMapTasks[$key]); |
|
302
|
10 |
|
unset($this->activeRequests[$task_id]); |
|
|
|
|
|
|
303
|
|
|
|
|
304
|
10 |
|
$this->pendingRequests[$task_id]->setResponse($response); |
|
|
|
|
|
|
305
|
10 |
|
$this->pendingRequests[$task_id]->onCallback(); |
|
|
|
|
|
|
306
|
|
|
|
|
|
|
|
|
|
307
|
|
|
|
|
308
|
10 |
|
if (!$request->isPersistent()) { |
|
|
|
|
|
|
309
|
10 |
|
unset($this->pendingRequests[$task_id]); |
|
|
|
|
|
|
310
|
|
|
} |
|
311
|
|
|
|
|
312
|
10 |
|
$this->completedRequestCount++; |
|
313
|
|
|
|
|
314
|
|
|
// remove the curl handle that just completed |
|
315
|
10 |
|
curl_multi_remove_handle($this->handlerMulti(), $done['handle']); |
|
|
|
|
|
|
316
|
|
|
|
|
317
|
|
|
// if something was requeued, this will get it running/update our loop check values |
|
318
|
10 |
|
$status = curl_multi_exec($this->handlerMulti(), $active); |
|
|
|
|
|
|
319
|
|
|
} |
|
320
|
|
|
|
|
321
|
|
|
// see if there is anything to read |
|
322
|
10 |
|
curl_multi_select($this->handlerMulti(), 0.01); |
|
|
|
|
|
|
323
|
10 |
|
return $this->countActive(); |
|
|
|
|
|
|
324
|
|
|
} |
|
325
|
|
|
|
|
326
|
10 |
|
public function makePendingRequestsQue() |
|
|
|
|
|
|
327
|
|
|
{ |
|
328
|
10 |
|
$max = $this->getSimultaneousLimit(); |
|
|
|
|
|
|
329
|
10 |
|
$active = $this->countActive(); |
|
330
|
|
|
|
|
|
|
|
|
|
331
|
|
|
|
|
332
|
10 |
|
if ($active < $max) { |
|
333
|
10 |
|
$canAdd = $max - $active; |
|
334
|
|
|
// $pending = sizeof($this->pendingRequests); |
|
335
|
|
|
|
|
336
|
10 |
|
$add = []; |
|
337
|
|
|
|
|
|
|
|
|
|
338
|
|
|
|
|
339
|
10 |
|
foreach ($this->pendingRequests as $task_id => $params) { |
|
|
|
|
|
|
340
|
10 |
|
if (empty($this->activeRequests[$task_id])) { |
|
|
|
|
|
|
341
|
10 |
|
$add[$task_id] = $task_id; |
|
|
|
|
|
|
342
|
|
|
} |
|
343
|
|
|
} |
|
344
|
|
|
|
|
|
|
|
|
|
345
|
|
|
|
|
346
|
10 |
|
if (sizeof($add)) { |
|
|
|
|
|
|
347
|
10 |
|
if ($canAdd >= sizeof($add)) { |
|
|
|
|
|
|
348
|
10 |
|
$ll = $add; |
|
349
|
|
|
} else { |
|
350
|
1 |
|
$ll = array_rand($add, $canAdd); |
|
|
|
|
|
|
351
|
1 |
|
if (!is_array($ll)) { |
|
|
|
|
|
|
352
|
1 |
|
$ll = array($ll => $ll); |
|
|
|
|
|
|
353
|
|
|
} |
|
354
|
|
|
} |
|
355
|
|
|
|
|
356
|
10 |
|
foreach ($ll as $task_id) { |
|
|
|
|
|
|
357
|
10 |
|
$this->_prepareLoopQue($task_id); |
|
|
|
|
|
|
358
|
|
|
} |
|
359
|
|
|
}// if add |
|
360
|
|
|
}// if can add |
|
361
|
10 |
|
} |
|
362
|
|
|
|
|
363
|
|
|
/** |
|
364
|
|
|
* @param string $task_id |
|
365
|
|
|
*/ |
|
366
|
10 |
|
private function _prepareLoopQue($task_id) |
|
|
|
|
|
|
367
|
|
|
{ |
|
368
|
10 |
|
$this->activeRequests[$task_id] = 1; |
|
|
|
|
|
|
369
|
10 |
|
$this->waitRequests++; |
|
370
|
|
|
|
|
371
|
10 |
|
$h = $this->pendingRequests[$task_id]->handle(); |
|
|
|
|
|
|
372
|
|
|
|
|
373
|
|
|
// pool |
|
374
|
10 |
|
curl_multi_add_handle($this->handlerMulti(), $h); |
|
|
|
|
|
|
375
|
|
|
|
|
376
|
10 |
|
if (is_object($h)) { |
|
|
|
|
|
|
377
|
|
|
$key = spl_object_id( $h ); |
|
|
|
|
|
|
378
|
|
|
} else { |
|
379
|
10 |
|
$key = (string) $h ; |
|
|
|
|
|
|
380
|
|
|
} |
|
381
|
|
|
|
|
382
|
10 |
|
$this->handleMapTasks[$key] = $task_id; |
|
|
|
|
|
|
383
|
10 |
|
} |
|
384
|
|
|
} |
|
385
|
|
|
|