openresty 集成lua-resty-mail +smtp2http 扩展灵活的mail 服务

lua-resty-mail 是一个不错的openresty mail 扩展，我们可以用来进行邮件发送，支持附件功能
smtp2http 是一个smtp 服务，可以将smtp 请求数据转换为http rest 请求，这个在我们的实际应用
中还是很方便的，比如需要mail 服务，但是我们需要进行一些灵活的控制，比如一些devops平台
我们需要监控的报警处理，同时想对于内容进行一些处理
备注： 测试使用openresty + docker-compose 的方式运行,同时使用了一个webhook 的工具

环境准备

  • docker-compose 文件
 
version: "3"
services:
  app:
   build: ./
   ports:
   - "8080:80"
   volumes:
   - "./app/:/opt/app/"
   - "./nginx.conf:/usr/local/openresty/nginx/conf/nginx.conf"
  benthos:
    image: jeffail/benthos
    volumes:
    - "./conf/webhook.yaml:/benthos.yaml"
    ports:
    - "4195:4195"
  smtp2http:
    image: uflare/smtp2http
    command: --listen=:25 --webhook=http://benthos:4195/ --strict=false
 
 
  • nginx 配置
worker_processes 1;
user root;  
events {
    worker_connections 1024;
}
http {
    include mime.types;
    default_type application/octet-stream;
    sendfile on;
    keepalive_timeout 65;
    lua_code_cache off;
    gzip on;
    resolver 127.0.0.11;      # 注意dns 的地址    
    real_ip_header X-Forwarded-For;
    real_ip_recursive on;
    lua_package_path '/opt/app/?.lua;;';
    server {
        listen 80;
        server_name localhost;
        charset utf-8;
        root html;
        default_type text/html;
        location / {
           default_type text/html;
           index index.html;
​
        }
        location /mail {
          content_by_lua_block {
            require("mail/init")();
          }
        }
        location /info {
          more_set_headers 'Content-Type application/json';
          content_by_lua_block {
             require("app/init")("dalong","admin");
          }
       }
        error_page 500 502 503 504 /50x.html;
        location = /50x.html {
            root html;
        }
    }
}
 
 
  • webhook 配置
    conf/webhook.yaml
 
input:
  type: broker
  broker:
    inputs:
      - type: http_server
        http_server:
          path: /
        processors:
          - type: text
            text:
              operator: prepend
              value: "get email message: "
output:
  type: stdout
 
 
  • dockerfile
    安装mail 包
 
FROM openresty/openresty:alpine-fat
LABEL author="1141591465@qq.com"
RUN /usr/local/openresty/luajit/bin/luarocks install lua-rocks-app-project
RUN /usr/local/openresty/luajit/bin/luarocks install lua-resty-mail
 

mail 调用代码

参考官方的demo，简单修改几个参数

local mail = require "resty.mail"
function send()
    local mailer, err = mail.new({
        host = "smtp2http",
        port = 25,
        ssl=false,
      })
      if err then
        ngx.log(ngx.ERR, "mail.new error: ", err)
        return ngx.exit(ngx.HTTP_INTERNAL_SERVER_ERROR)
      end
​
      local ok, err = mailer:send({
        from = "dalongrong <rongfl@demo.com>",
        to = { "1141591465@qq.com" },
        subject = "荣锋亮测试!",
        text = "There's pizza in the sewer.",
        html = "<h1>There's pizza in the sewer.</h1>",
      })
      if err then
        ngx.log(ngx.ERR, "mailer:send error: ", err)
        return ngx.exit(ngx.HTTP_INTERNAL_SERVER_ERROR)
      end
end
return send
​

启动&&测试

  • 启动
docker-compose up -d
 
  • 效果
    使用docker-compose logs -f 查看日志
 
curl -i http://localhost:8080/mail
​
HTTP/1.1 200 OK
Server: openresty/1.13.6.2
Date: Fri, 04 Jan 2019 01:01:56 GMT
Content-Type: text/html; charset=utf-8
Transfer-Encoding: chunked
Connection: keep-alive
 
 

日志信息：

Attaching to openresty-my-luarocks-demo-mail_benthos_1, openresty-my-luarocks-demo-mail_app_1, openresty-my-luarocks-demo-mail_smtp2http_1
benthos_1 | {"@timestamp":"2019-01-04T01:01:29Z","@service":"benthos","level":"INFO","component":"benthos","message":"Launching a benthos instance, use CTRL+C to close."}
benthos_1 | {"@timestamp":"2019-01-04T01:01:29Z","@service":"benthos","level":"INFO","component":"benthos","message":"Listening for HTTP requests at: http://0.0.0.0:4195\n"}
smtp2http_1 | start the smtp server on address: :25
smtp2http_1 | specified maximum body size: 2097152 bytes
smtp2http_1 | specified server name: smtp2http
smtp2http_1 | specified webhook: http://benthos:4195/
smtp2http_1 | validating the incoming FROM header: false
app_1 | 2019/01/04 01:01:29 [alert] 1#1: lua_code_cache is off; this will hurt performance in /usr/local/openresty/nginx/conf/nginx.conf:11
app_1 | nginx: [alert] lua_code_cache is off; this will hurt performance in /usr/local/openresty/nginx/conf/nginx.conf:11
benthos_1 | get email message: addresses%5Bbcc%5D=&addresses%5Bcc%5D=&addresses%5Bfrom%5D=rongfl%40demo.com&addresses%5Bto%5D=1141591465%40qq.com&body%5Bhtml%5D=PGgxPlRoZXJlJ3MgcGl6emEgaW4gdGhlIHNld2VyLjwvaDE%2B&body%5Btext%5D=VGhlcmUncyBwaXp6YSBpbiB0aGUgc2V3ZXIu&id=%3C1546563716.18541b6b1bdaf9deea2f3c73908a2b94e63a432d%40localhost.localdomain%3E&subject=%E8%8D%A3%E9%94%8B%E4%BA%AE%E6%B5%8B%E8%AF%95%21
app_1 | 172.26.0.1 - - [04/Jan/2019:01:01:56 +0000] "GET /mail HTTP/1.1" 200 5 "-" "curl/7.54.0"
 

说明

上边的邮件内容是url+base64编码了的，实际内容可以通过base64 编码的工具处理下就可以了，使用openresty 的mail 模块我们
可以方便的搞好多事情

参考资料

https://github.com/GUI/lua-resty-mail
https://github.com/rongfengliang/openresty_luarocksmodule-demo
https://github.com/Jeffail/benthos
https://github.com/uflare/smtp2http

posted on 2019-01-04 09:10  荣锋亮  阅读(1703)  评论(0)  编辑  收藏  举报

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