PHP 简单实现延时操作
场景:在业务中有时会碰到延迟操作,如下单后半小时未支付则取消订单、下单后十五分钟未支付则发短信提醒等等。那这样的需求如何去实现呢。
实现方式
第一个简单的方式就是用一个后台进程死循环去查订单,根据下单时间去做不同的操作
第二种就是使用消息队列的定时消息,下单之后发送定时消息,不同的定时队列去处理不同的逻辑
第三种可以使用框架提供的一些既有功能去做
实现代码
我们以订单创建15分钟后未支付,给用户发送邮件为场景进行学习
准备工作:
简单的订单表:order
各种需要的composer包
rabbitMq本地服务
开通阿里云RocketMq服务
第一种
代码逻辑很简单就直接死循环就行了
启动这个脚本进程,可以用supervisor配置
部分代码
- //创建订单的逻辑/**
- * 随机创建订单
- */$order = [
- 'order_number' => mt_rand(100,10000).date("YmdHis"),
- 'user_id' => mt_rand(1, 100),
- 'order_amount' => mt_rand(100, 1000),];
- /**@var $manager Illuminate\Database\Capsule\Manager **/
- $conn = $manager;$insertResult = $conn::table("order")
- ->insert($order);print_r($insertResult);
延迟处理逻辑
- while(true) {
- // 未支付订单列表
- $orderList = $conn::table("order")
- ->where("created_time", '<=', date("Y-m-d H:i:s", strtotime("-15 minutes")))
- ->where('sended_need_pay_notify', '=', 2)
- ->where('status', '=', 1)
- ->select(['user_id', 'id'])
- ->orderBy("id", 'asc')
- ->get();
- $orderList = json_decode(json_encode($orderList), true);
- foreach ($orderList as $orderInfo) {
- sendEmail($orderInfo['user_id']);
- $conn::table('order')
- ->where('id', '=', $orderInfo['id'])
- ->update(['sended_need_pay_notify' => 1]);
- logs("update-success-orderId-". $orderInfo['id']."-userId-".$orderInfo['user_id']);
- }
- sleep(10);}
gaoz@nobodyMBP delay_mq_demo % php first_while_handler.php
send email to 73 success ...
2020-06-24 11:37:36:update-success-orderId-3-userId-73
这种方式吧实现简单,但是不优雅,同时大批量订单产生也会遇到问题。
第二种
比如使用阿里云的MQ服务,目前rocketMq与rabbitMq版本支持延迟消息,但是rabbit的延时消息收费太高了
这里先使用rocketMq的延迟消息去实现
需要开通阿里云的服务
- // 创建订单的逻辑try
- {
- /**
- * 随机创建订单
- */
- $order = [
- 'order_number' => mt_rand(100,10000).date("YmdHis"),
- 'user_id' => mt_rand(1, 100),
- 'order_amount' => mt_rand(100, 1000),
- ];
- /**@var $manager Illuminate\Database\Capsule\Manager **/
- $conn = $manager;
- $insertId = $conn::table("order")
- ->insertGetId($order);
- $body = json_encode(['order_id' => $insertId, 'created_time' => date("Y-m-d H:i:s")]);
- $publishMessage = new TopicMessage(
- $body );
- // 设置消息KEY
- $publishMessage->setMessageKey("MessageKey");
- // 定时消息, 定时时间为3分钟后
- $publishMessage->setStartDeliverTime(time() * 1000 + 3 * 60 * 1000);
- $result = $this->producer->publishMessage($publishMessage);
- print "Send mq message success. msgId is:" . $result->getMessageId() . ", bodyMD5 is:" . $result
- -
- >getMessageBodyMD5() . "\n";
- } catch (\Exception $e) {
- print_r($e->getMessage() . "\n");
- }
消费逻辑 同样是在消费者中处理
- foreach ($messages as $message) {
- $receiptHandles[] = $message->getReceiptHandle();
- $messageBody = $message->getMessageBody();
- $orderInfo = json_decode($messageBody, true);
- if (!emptyempty($orderInfo['order_id'])) {
- $orderId = $orderInfo['order_id'];
- /**@var $manager Illuminate\Database\Capsule\Manager * */
- $conn = $manager;
- $orderInfo = $conn::table("order")
- ->select(['id', 'user_id'])
- ->where('id', '=', $orderId)
- ->where('status', '=', 1)
- ->first();
- if (!emptyempty($orderInfo)) {
- $orderInfo = json_decode(json_encode($orderInfo), true);
- sendEmail($orderInfo['user_id']);
- $conn::table('order')
- ->where('id', '=', $orderInfo['id'])
- ->update(['sended_need_pay_notify' => 1]);
- logs("update-success-orderId-" . $orderInfo['id'] .
- "-userId-" . $orderInfo['user_id']);
- }
- }
- }
启动生产一条消息
gaoz@nobodyMBP delay_mq_demo % php rocket_mq_handler_producer.php
Send mq message success. msgId is:76CF2135696C3D4EAC698A9FA1E1879D, bodyMD5
is:63448B50AA7B8AF47B07AA7CE807E3D3
gaoz@nobodyMBP delay_mq_demo %
启动消费者慢慢等待
gaoz@nobodyMBP delay_mq_demo % php rocket_mq_handler_consumer.php
No message, contine long polling!RequestId:5EF752583441411C74869BA9
No message, contine long polling!RequestId:5EF7525B3441411C74869FE2
No message, contine long polling!RequestId:5EF7525E3441411C7486A42C
No message, contine long polling!RequestId:5EF752613441411C7486A7D9
consume finish, messages:send email to 95 success ...2020-06-27 12:08:05:update-success-orderId-8-userId-95
Array(
ack
这种方式有现有的服务可以使用,减少开发时间
第三种 使用rabbitMq去实现
查阅文档没有找到rabbitMq支持延迟队列的原生功能,但是可以通过消息的ttl+死信队列实现
私信队列就是用来存放没有被消费或者消费失败等消息的队列
当设置消息的有效期内没有被消费消息就会被转发到死信队列
通过设置消息的有效期实现延时功能
- // 生产者$exchange = 'order15min_notify_exchange';
- $queue = 'order15minx_notify_queue';$dlxExchange = "dlx_order15min_exchange";
- $dlxQueue = "dlx_order15min_queue";
- $connection = new AMQPStreamConnection(getenv('RABBIT_HOST'), getenv('RABBIT_PORT'), getenv("RABBIT_USER"), getenv("RABBIT_PASS"), getenv("RABBIT_VHOST"));
- $channel = $connection->channel();$channel->exchange_declare($exchange, AMQPExchangeType::DIRECT, false, true, false);
- $channel->exchange_declare($dlxExchange, AMQPExchangeType::DIRECT, false, true, false);// 设置队列的过期时间// 正常队列$table = new \PhpAmqpLib\Wire\AMQPTable();// 消息有效期$table->set('x-message-ttl', 3*60*1000);$table->set("x-dead-letter-exchange", $dlxExchange);$channel->queue_declare($queue, false, true, false, false, false, $table);$channel->queue_bind($queue, $exchange);// 死信队列$channel->queue_declare($dlxQueue, false, true, false, false, false);$channel->queue_bind($dlxQueue, $dlxExchange);/**
- * 随机创建订单
- */$order = [
- 'order_number' => mt_rand(100,10000).date("YmdHis"),
- 'user_id' => mt_rand(1, 100),
- 'order_amount' => mt_rand(100, 1000),];/**@var $manager Illuminate\Database\Capsule\Manager **/$conn = $manager;$insertId = $conn::table("order")
- ->insertGetId($order);$messageBody = json_encode(['order_id' => $insertId, 'created_time' => date("Y-m-d H:i:s")]);
- $message = new AMQPMessage($messageBody, array('content_type' => 'text/plain', 'delivery_mode' => AMQPMessage::DELIVERY_MODE_PERSISTENT));
- $channel->basic_publish($message, $exchange);
消费者
- $dlxExchange = "dlx_order15min_exchange";$dlxQueue = "dlx_order15min_queue";
- $connection = new AMQPStreamConnection(getenv('RABBIT_HOST'), getenv('RABBIT_PORT'), getenv("RABBIT_USER"), getenv("RABBIT_PASS"), getenv("RABBIT_VHOST"));
- $channel = $connection->channel();
- $channel->queue_declare($dlxQueue, false, true, false, false);$channel->exchange_declare($dlxExchange, AMQPExchangeType::DIRECT, false, true, false);
- $channel->queue_bind($dlxQueue, $dlxExchange);/**
- * @param \PhpAmqpLib\Message\AMQPMessage $message
- */function process_message($message){
- echo "\n--------\n";
- echo $message->body;
- echo "\n--------\n";
- $orderInfo = json_decode($message->body, true);
- if (!emptyempty($orderInfo['order_id'])) {
- $orderId = $orderInfo['order_id'];
- /**@var $conn Illuminate\Database\Capsule\Manager * */
- $conn = getdb();
- $orderInfo = $conn::table("order")
- ->select(['id', 'user_id'])
- ->where('id', '=', $orderId)
- ->where('status', '=', 1)
- ->first();
- if (!emptyempty($orderInfo)) {
- $orderInfo = json_decode(json_encode($orderInfo), true);
- sendEmail($orderInfo['user_id']);
- $conn::table('order')
- ->where('id', '=', $orderInfo['id'])
- ->update(['sended_need_pay_notify' => 1]);
- logs("update-success-orderId-" . $orderInfo['id'] . "-userId-" . $orderInfo['user_id']);
- }
- }
- $message->delivery_info['channel']->basic_ack(
- $message->delivery_info['delivery_tag']);}$channel->basic_consume($dlxQueue, $consumerTag, false, false, false, false, 'process_message');
启动消费者
- gaoz@nobodyMBP delay_mq_demo % php rabbit_mq_handler_consumer.php
- --------
- {"order_id":7,"created_time":"2020-06-27 11:50:08"}
- --------
- send email to 2 success ...
- 2020-06-27 11:56:55:update-success-orderId-7-userId-2
分别启动消费者、生产者就可以了,这里面消息的流转可以看到
消息先进入到正常队列,过期后进入了死信队列而被消费
第四种
使用laravel自带的Queue去实现
这里没有整理详细代码,后面更新出来
可以查看官方文档 队列《Laravel 5.7 中文文档》
代码示例:github.com/nobody05/delay_mq_demo