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maxious
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<?php |
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/* |
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Authored by Fabian Franz (www.lionsad.de) |
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Released under Apache License 2.0 |
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$Id$ |
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*/ |
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class RollingCurlGroupException extends Exception {} |
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/** |
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* @throws RollingCurlGroupException |
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*/ |
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abstract class RollingCurlGroupRequest extends RollingCurlRequest { |
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private $group = null; |
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/** |
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* Set group for this request |
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* |
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* @param group The group to be set |
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*/ |
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function setGroup($group) { |
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if (!($group instanceof RollingCurlGroup)) |
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throw new RollingCurlGroupException("setGroup: group needs to be of instance RollingCurlGroup"); |
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$this->group = $group; |
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} |
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/** |
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* Process the request |
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* |
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* |
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*/ |
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function process($output, $info) { |
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if ($this->group) |
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$this->group->process($output, $info, $this); |
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} |
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/** |
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* @return void |
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*/ |
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public function __destruct() { |
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unset($this->group); |
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parent::__destruct(); |
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} |
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} |
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/** |
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* A group of curl requests. |
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* |
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* @throws RollingCurlGroupException * |
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*/ |
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class RollingCurlGroup { |
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/** |
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* @var string group name |
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*/ |
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protected $name; |
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/** |
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* @var int total number of requests in a group |
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*/ |
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protected $num_requests = 0; |
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/** |
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* @var int total number of finished requests in a group |
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*/ |
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protected $finished_requests = 0; |
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/** |
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* @var array requests array |
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*/ |
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private $requests = array(); |
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/** |
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* @param string $name group name |
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* @return void |
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*/ |
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function __construct($name) { |
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$this->name = $name; |
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} |
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/** |
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* @return void |
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*/ |
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public function __destruct() { |
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unset($this->name, $this->num_requests, $this->finished_requests, $this->requests); |
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} |
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/** |
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* Adds request to a group |
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* |
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* @throws RollingCurlGroupException |
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* @param RollingCurlGroupRequest|array $request |
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* @return bool |
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*/ |
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function add($request) { |
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if ($request instanceof RollingCurlGroupRequest) { |
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$request->setGroup($this); |
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$this->num_requests++; |
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$this->requests[] = $request; |
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} |
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else if (is_array($request)) { |
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foreach ($request as $req) |
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$this->add($req); |
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} |
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else |
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throw new RollingCurlGroupException("add: Request needs to be of instance RollingCurlGroupRequest"); |
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return true; |
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} |
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/** |
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* @throws RollingCurlGroupException |
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* @param RollingCurl $rc |
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* @return bool |
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*/ |
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function addToRC(RollingCurl $rc){ |
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$ret = true; |
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while (count($this->requests) > 0){ |
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$ret1 = $rc->add(array_shift($this->requests)); |
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if (!$ret1) |
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$ret = false; |
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} |
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return $ret; |
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} |
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/** |
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* Override to implement custom response processing. |
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* |
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* Don't forget to call parent::process(). |
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* |
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* @param string $output received page body |
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* @param array $info holds various information about response such as HTTP response code, content type, time taken to make request etc. |
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* @param RollingCurlRequest $request request used |
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* @return void |
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*/ |
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function process($output, $info, $request) { |
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$this->finished_requests++; |
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if ($this->finished_requests >= $this->num_requests) |
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$this->finished(); |
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} |
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/** |
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* Override to execute code after all requests in a group are processed. |
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* |
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* @return void |
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*/ |
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function finished() { |
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} |
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} |
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/** |
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* Group version of rolling curl |
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*/ |
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class GroupRollingCurl extends RollingCurl { |
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/** |
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* @var mixed common callback for all groups |
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*/ |
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private $group_callback = null; |
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/** |
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* @param string $output received page body |
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* @param array $info holds various information about response such as HTTP response code, content type, time taken to make request etc. |
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* @param RollingCurlRequest $request request used |
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* @return void |
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*/ |
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protected function process($output, $info, $request) { |
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if ($request instanceof RollingCurlGroupRequest) |
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$request->process($output, $info); |
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if (is_callable($this->group_callback)) |
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call_user_func($this->group_callback, $output, $info, $request); |
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} |
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/** |
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* @param mixed $callback common callback for all groups |
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* @return void |
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*/ |
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function __construct($callback = null) { |
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$this->group_callback = $callback; |
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parent::__construct(array(&$this, "process")); |
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} |
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/** |
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* Adds a group to processing queue |
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* |
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* @param RollingCurlGroup|Request $request |
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* @return bool |
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*/ |
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public function add($request) { |
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if ($request instanceof RollingCurlGroup) |
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return $request->addToRC($this); |
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else |
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return parent::add($request); |
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} |
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/** |
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* Execute processing |
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* |
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* @param int $window_size Max number of simultaneous connections |
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* @return bool|string |
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*/ |
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public function execute($window_size = null) { |
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if (count($this->requests) == 0) |
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return false; |
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return parent::execute($window_size); |
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} |
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} |
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