Nginx与Lua开发
Nginx与Lua开发
1.Lua - 一个简洁,轻量,可扩展的脚本语言
2.Nginx+Lua优势 - 充分的结合nginx的并发处理epool优势和Lua的轻量实现简单的功能高并发的场景
3.安装Lua - yum install lua
[root@t work]# lua
Lua 5.1.4 Copyright (C) 1994-2008 Lua.org, PUC-Rio
> print("hello world")
hello world
>
通过文件的形式
#!/usr/bin/lua
print("I'm Tncs!")
4.Nginx+Lua开发环境
LuaJIT, ngx_devel_kit和lua-nginx-module, 重新编译nginx
5.Nginx编译安装Lua模块
(1)安装Lua环境及相关库
官方网站:https://github.com/openresty/lua-nginx-module
(2)LuaJIT
官方网站:http://luajit.org/download.html
下载:wget http://luajit.org/download/LuaJIT-2.0.2.tar.gz
make install PREFIX=/usr/local/LuaJIT
export LUAJIT_LIB=/usr/local/LuaJIT/lib
export LUAJIT_INC=/usr/local/LuaJIT/include/luajit-2.0
(3)ngx_devel_kit和lua-nginx-module
cd /opt/download
wget https://github.com/simplresty/ngx_devel_kit/archive/v0.3.0.tar.gz
wget https://github.com/openresty/lua-nginx-module/archive/v0.10.9rc7.tar.gz
(4)解压上述两个tar包,然后重新编译nginx
wget http://nginx.org/download/nginx-1.12.2.tar.gz
wget http://nginx.org/download/nginx-1.12.1.tar.gz
./configure --prefix=/etc/nginx --sbin-path=/usr/sbin/nginx --modules-path=/usr/lib64/nginx/modules --conf-path=/etc/nginx/nginx.conf --error-log-path=/var/log/nginx/error.log --http-log-path=/var/log/nginx/access.log --pid-path=/var/run/nginx.pid --lock-path=/var/run/nginx.lock --http-client-body-temp-path=/var/cache/nginx/client_temp --http-proxy-temp-path=/var/cache/nginx/proxy_temp --http-fastcgi-temp-path=/var/cache/nginx/fastcgi_temp --http-uwsgi-temp-path=/var/cache/nginx/uwsgi_temp --http-scgi-temp-path=/var/cache/nginx/scgi_temp --user=nginx --group=nginx --with-compat --with-file-aio --with-threads --with-http_addition_module --with-http_auth_request_module --with-http_dav_module --with-http_flv_module --with-http_gunzip_module --with-http_gzip_static_module --with-http_mp4_module --with-http_random_index_module --with-http_realip_module --with-http_secure_link_module --with-http_slice_module --with-http_ssl_module --with-http_stub_status_module --with-http_sub_module --with-http_v2_module --with-mail --with-mail_ssl_module --with-stream --with-stream_realip_module --with-stream_ssl_module --with-stream_ssl_preread_module --with-cc-opt='-O2 -g -pipe -Wall -Wp,-D_FORTIFY_SOURCE=2 -fexceptions -fstack-protector-strong --param=ssp-buffer-size=4 -grecord-gcc-switches -m64 -mtune=generic -fPIC' --with-ld-opt='-Wl,-z,relro -Wl,-z,now -pie' --add-module=/opt/download/ngx_devel_kit-0.3.0 --add-module=/opt/download/lua-nginx-module-0.10.9rc7
make -j 4 && make install
(5)加载lua库,加入到ld.so.conf文件
# echo "/usr/local/LuaJIT/lib" >> /etc/ld.so.conf
# ldconfig
推荐:http://www.imooc.com/article/19597
6.nginx调用lua模块指令
set_by_lua 设置nginx变量,可以实现复杂的复制逻辑
set_by_lua_file
access_by_lua 请求访问阶段处理,用于访问控制
access_by_lua_file
content_by_lua 内容处理器,接收请求处理并输出响应
content_by_lua_file
7.nginx lua api
ngx.var nginx变量
ngx.req.get_headers 获取请求头
ngx.req.get_uri_args 获取URL请求参数
ngx.redirect 重定向
ngx.print 输出响应内容体
ngx.say 同ngx.print,但是会在最后输出一个换行符
ngx.header 输出响应头