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<?php |
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/** |
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* @link http://www.tintsoft.com/ |
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* @copyright Copyright (c) 2012 TintSoft Technology Co. Ltd. |
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* @license http://www.tintsoft.com/license/ |
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*/ |
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namespace yuncms\broadcast; |
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use Yii; |
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use yii\base\Component; |
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/** |
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* 广播组件 |
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* |
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* @author Tongle Xu <[email protected]> |
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* @since 3.0 |
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*/ |
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abstract class BaseBroadcast extends Component implements BroadcastInterface |
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{ |
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/** |
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* @event BroadcastEvent an event raised right before send. |
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* You may set [[BroadcastEvent::isValid]] to be false to cancel the send. |
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*/ |
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const EVENT_BEFORE_SEND = 'beforeSend'; |
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/** |
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* @event BroadcastEvent an event raised right after send. |
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*/ |
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const EVENT_AFTER_SEND = 'afterSend'; |
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/** |
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* @var string the default class name of the new message instances created by [[createMessage()]] |
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*/ |
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public $messageClass = 'yuncms\broadcast\BaseMessage'; |
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/** |
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* @var bool whether to save broadcast messages as files under [[fileTransportPath]] instead of sending them |
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* to the actual recipients. This is usually used during development for debugging purpose. |
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* @see fileTransportPath |
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*/ |
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public $useFileTransport = false; |
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/** |
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* @var string the directory where the broadcast messages are saved when [[useFileTransport]] is true. |
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*/ |
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public $fileTransportPath = '@runtime/broadcast'; |
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/** |
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* @var callable a PHP callback that will be called by [[send()]] when [[useFileTransport]] is true. |
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* The callback should return a file name which will be used to save the broadcast message. |
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* If not set, the file name will be generated based on the current timestamp. |
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* |
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* The signature of the callback is: |
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* |
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* ```php |
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* function ($broadcast, $message) |
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* ``` |
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*/ |
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public $fileTransportCallback; |
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/** |
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* Creates a new message instance and optionally composes its body content via view rendering. |
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* |
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* @param array $message message payload. |
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* @return MessageInterface|object message instance. |
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* @throws \yii\base\InvalidConfigException |
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*/ |
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public function createMessage($message): MessageInterface |
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{ |
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$config = [ |
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'class' => $this->messageClass, |
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'broadcast' => $this, |
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'body' => $message, |
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]; |
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return Yii::createObject($config); |
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} |
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/** |
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* Sends the given broadcast message. |
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* This method will log a message about the broadcast being sent. |
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* If [[useFileTransport]] is true, it will save the broadcast as a file under [[fileTransportPath]]. |
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* Otherwise, it will call [[sendMessage()]] to send the broadcast to its recipient(s). |
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* Child classes should implement [[sendMessage()]] with the actual broadcast sending logic. |
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* @param MessageInterface $message broadcast message instance to be sent |
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* @return bool whether the message has been sent successfully |
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*/ |
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public function send($message) |
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{ |
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if (!$this->beforeSend($message)) { |
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return false; |
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} |
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Yii::info('Sending broadcast :' . $message->toString(), __METHOD__); |
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if ($this->useFileTransport) { |
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$isSuccessful = $this->saveMessage($message); |
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} else { |
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$isSuccessful = $this->sendMessage($message); |
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} |
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$this->afterSend($message, $isSuccessful); |
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return $isSuccessful; |
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} |
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/** |
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* Sends multiple messages at once. |
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* |
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* The default implementation simply calls [[send()]] multiple times. |
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* Child classes may override this method to implement more efficient way of |
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* sending multiple messages. |
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* |
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* @param array $messages list of broadcast messages, which should be sent. |
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* @return int number of messages that are successfully sent. |
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*/ |
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public function sendMultiple(array $messages) |
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{ |
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$successCount = 0; |
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foreach ($messages as $message) { |
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if ($this->send($message)) { |
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$successCount++; |
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} |
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} |
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return $successCount; |
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} |
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/** |
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* Sends the specified message. |
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* This method should be implemented by child classes with the actual broadcast sending logic. |
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* @param MessageInterface $message the message to be sent |
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* @return bool whether the message is sent successfully |
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*/ |
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abstract protected function sendMessage($message); |
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/** |
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* Saves the message as a file under [[fileTransportPath]]. |
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* @param MessageInterface $message |
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* @return bool whether the message is saved successfully |
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*/ |
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protected function saveMessage($message) |
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{ |
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$path = Yii::getAlias($this->fileTransportPath); |
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if (!is_dir($path)) { |
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mkdir($path, 0777, true); |
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} |
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if ($this->fileTransportCallback !== null) { |
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$file = $path . '/' . call_user_func($this->fileTransportCallback, $this, $message); |
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} else { |
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$file = $path . '/' . $this->generateMessageFileName(); |
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} |
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file_put_contents($file, $message->toString()); |
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return true; |
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} |
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/** |
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* @return string the file name for saving the message when [[useFileTransport]] is true. |
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*/ |
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public function generateMessageFileName() |
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{ |
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$time = microtime(true); |
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return date('Ymd-His-', $time) . sprintf('%04d', (int)(($time - (int)$time) * 10000)) . '-' . sprintf('%04d', mt_rand(0, 10000)) . '.eml'; |
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} |
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/** |
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* This method is invoked right before mail send. |
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* You may override this method to do last-minute preparation for the message. |
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* If you override this method, please make sure you call the parent implementation first. |
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* @param MessageInterface $message |
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* @return bool whether to continue sending an broadcast. |
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*/ |
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public function beforeSend($message) |
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{ |
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$event = new BroadcastEvent(['message' => $message]); |
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$this->trigger(self::EVENT_BEFORE_SEND, $event); |
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return $event->isValid; |
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} |
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/** |
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* This method is invoked right after mail was send. |
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* You may override this method to do some postprocessing or logging based on mail send status. |
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* If you override this method, please make sure you call the parent implementation first. |
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* @param MessageInterface $message |
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* @param bool $isSuccessful |
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*/ |
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public function afterSend($message, $isSuccessful) |
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{ |
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$event = new BroadcastEvent(['message' => $message, 'isSuccessful' => $isSuccessful]); |
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$this->trigger(self::EVENT_AFTER_SEND, $event); |
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} |
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} |