应用:
业务解耦:订单业务后续关联其他小组服务,需要同步更新,但不能影响下单主流程,需要通过消息队列去解耦业务
涉及到的服务:
- redis
- supervisor
- PHP:Predis/Predis第三方包
使用Docker部署
-
PHP镜像配置
FROM php:7.3-fpm
MAINTAINER oomcc <baqianxin@163.com>
ARG PHALCON_VERSION=3.4.2
ARG PHALCON_EXT_PATH=php7/64bits
RUN cp /usr/share/zoneinfo/Asia/Shanghai /etc/localtime \
&& echo "Asia/Shanghai" > /etc/timezone
RUN set -xe && \
# Compile Phalcon
curl -LO https://github.com/phalcon/cphalcon/archive/v${PHALCON_VERSION}.tar.gz && \
tar xzf ${PWD}/v${PHALCON_VERSION}.tar.gz && \
docker-php-ext-install -j $(getconf _NPROCESSORS_ONLN) ${PWD}/cphalcon-${PHALCON_VERSION}/build/${PHALCON_EXT_PATH} && \
# Remove all temp files
rm -r \
${PWD}/v${PHALCON_VERSION}.tar.gz \
${PWD}/cphalcon-${PHALCON_VERSION}
ADD sources.list /etc/apt/sources.list
RUN apt-get update \
# 相关依赖必须手动安装
&& apt-get install -y \
libfreetype6-dev \
libjpeg62-turbo-dev \
libmcrypt-dev \
libpng-dev \
supervisor \
git \
# 安装扩展
&& docker-php-ext-install -j$(nproc) iconv \
# 如果安装的扩展需要自定义配置时
&& docker-php-ext-configure gd --with-freetype-dir=/usr/include/ --with-jpeg-dir=/usr/include/ \
&& docker-php-ext-install -j$(nproc) gd
RUN docker-php-ext-install pdo_mysql bcmath \
&& docker-php-ext-enable pdo_mysql bcmath
RUN pecl install redis \
&& docker-php-ext-enable redis
COPY extension/docker-php-ext-tideways.ini /usr/local/etc/php/conf.d/docker-php-ext-tideways.ini
COPY extension/tideways_xhprof.so /usr/local/lib/php/extensions/no-debug-non-zts-20180731/tideways.so
COPY extension/docker-php-ext-mongodb.ini /usr/local/etc/php/conf.d/docker-php-ext-mongodb.ini
COPY extension/mongodb.so /usr/local/lib/php/extensions/no-debug-non-zts-20180731/mongodb.so
RUN apt-get clean \
&& apt-get autoremove
WORKDIR /opt
# Write Permission
RUN usermod -u 1000 www-data
EXPOSE 9000
VOLUME [ "/opt" ]
-
supervisor 服务配置
[program:mqworker]
directory = /opt/htdocs/shop.doing ; 程序的启动目录
command = php app/console/cli.php redisSub ; 启动命令,可以看出与手动在命令行启动的命令是一样的
autostart = true ; 在 supervisord 启动的时候也自动启动
startsecs = 5 ; 启动 5 秒后没有异常退出,就当作已经正常启动了
autorestart = true ; 程序异常退出后自动重启
startretries = 3 ; 启动失败自动重试次数,默认是 3
redirect_stderr = true ; 把 stderr 重定向到 stdout,默认 false
stdout_logfile_maxbytes = 20MB ; stdout 日志文件大小,默认 50MB
stdout_logfile_backups = 20 ; stdout 日志文件备份数
; stdout 日志文件,需要注意当指定目录不存在时无法正常启动,所以需要手动创建目录(supervisord 会自动创建日志文件)
stdout_logfile = /data/logs/mqworker_stdout.log
; 启动进程数量
numprocs = 2 ;
process_name = %(process_num)2xxxre
- Docker-compose服务启动配置
version: "2"
services:
nginx:
build: ./nginx
ports:
- "80:80"
links:
- "php"
- "redis"
volumes:
- ./www:/opt
- ./etc/nginx/conf.d:/etc/nginx/conf.d:rw
php:
build: ./php
ports:
- "9000:9000"
links:
- "mysql"
- "redis"
volumes:
- ./www:/opt
- ./supervisor/conf.d:/etc/supervisor/conf.d
mysql:
build: ./mysql
ports:
- "3306:3306"
volumes:
- ./www/data/mysql:/var/lib/mysql
environment:
MYSQL_ROOT_PASSWORD: 123456
redis:
build: ./redis
ports:
- "6379:6379"
networks:
sonarnet:
driver: bridge
使用Predis
composer install predis/predis
发布:
//命令行发布
docker exec -it product_redis_1 redis-cli
127.0.0.1:6379> PUBLISH notifications "this is a test"
(integer) 0 //订阅者数量
127.0.0.1:6379> PUBLISH notifications "this is a test"
(integer) 1 //订阅者数量
127.0.0.1:6379>
//Predis的发布
$redisClient = new Predis\Client($single_server + array('read_write_timeout' => 0));
$redisClient->publish('control_channel', '来自XXX的消息');
订阅:
- read_write_timeout 设为0不超时一直等待消息
// Create a client and disable r/w timeout on the socket
$redisClient = new Predis\Client($single_server + array('read_write_timeout' => 0));
// Initialize a new pubsub consumer.
$pubsub = $redisClient->pubSubLoop();
// Subscribe to your channels
$pubsub->subscribe('control_channel', 'notifications');
// Start processing the pubsup messages.
/** @var object $message */
foreach ($pubSub as $message) {
if ($message->channel == 'control_channel' && $message->payload == 'unsub') {
print_r('收到取消订阅的命令:unsub');
$pubSub->unsubscribe($message->channel);
print_r('不再订阅:' . $message->kind);
}
print_r($message);
}
unset($pubSub);
接收示例:
php /opt/htdocs/shop.doing/app/console/cli.php redisSub
stdClass Object
(
[kind] => subscribe //订阅成功响应的消息类型
[channel] => control_channel
[payload] => 1
)
stdClass Object
(
[kind] => subscribe
[channel] => notifications
[payload] => 2
)
stdClass Object
(
[kind] => message //发布的消息类型
[channel] => notifications
[payload] => this is a test
)
消息发布/订阅成功之后再通过Supervisor服务去启动守护