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
