设计中国北京2021,金华seo建站,seo品牌优化整站优化,安全的赣州网站建设1. 安装必要的工具和库
apt-get install capnproto luarocksluarocks install lua-capnproto
luarocks install lua-cjsonlua-cjson 库不是必须的#xff0c;是由于后面的演示程序要使用#xff0c;就一起装上了。
可以看下库的安装位置#xff1a;
root350983744ebf:~# …1. 安装必要的工具和库
apt-get install capnproto luarocksluarocks install lua-capnproto
luarocks install lua-cjsonlua-cjson 库不是必须的是由于后面的演示程序要使用就一起装上了。
可以看下库的安装位置
root350983744ebf:~# luarocks show lua-capnprotolua-capnproto 0.1.4-5 - Lua-capnproto is a pure lua implementation of capnproto based on LuaJIT.Lua-capnproto is a pure lua implementation of capnproto based on LuaJIT.License: BSD
Homepage: https://github.com/calio/lua-capnproto
Installed in: /usr/localModules:capnp (/usr/local/share/lua/5.1/capnp.lua)capnp.compile (/usr/local/share/lua/5.1/capnp/compile.lua)capnp.util (/usr/local/share/lua/5.1/capnp/util.lua)handwritten_capnp (/usr/local/share/lua/5.1/handwritten_capnp.lua)handwritten_data_generator (/usr/local/share/lua/5.1/handwritten_data_generator.lua)random (/usr/local/share/lua/5.1/random.lua)schema_capnp (/usr/local/share/lua/5.1/schema_capnp.lua)test (/usr/local/share/lua/5.1/test.lua)tool (/usr/local/share/lua/5.1/tool.lua)Depends on:lua ~ 5.1 (using 5.1-1)默认库都是安装到了 /usr/local/share/lua/5.1/ 目录下。
2. 编译 capnp 文件
先将 openresty 自带的 luajit 程序目录加入 PATH 路径中
export PATH$PATH:/usr/local/openresty/luajit/bin新建一个AddressBook.capnp 文件内容如下
0xdbb9ad1f14bf0b36; # unique file ID, generated by capnp idstruct Person {id 0 :UInt32;name 1 :Text;email 2 :Text;phones 3 :List(PhoneNumber);struct PhoneNumber {number 0 :Text;type 1 :Type;enum Type {mobile 0;home 1;work 2;}}employment :union {unemployed 4 :Void;employer 5 :Text;school 6 :Text;selfEmployed 7 :Void;# We assume that a person is only one of these.}
}struct AddressBook {people 0 :List(Person);
}
然后编译 capnp 文件
root350983744ebf:~# capnp compile -olua AddressBook.capnp
root350983744ebf:~# ls -lh
total 36K
-rw-r--r-- 1 root root 532 Oct 22 21:18 AddressBook.capnp
-rw-r--r-- 1 root root 21K Oct 22 21:20 AddressBook_capnp.lua得到 AddressBook_capnp.lua 文件。
3. 写一个测试程序
新建一个目录将 AddressBook_capnp.lua 文件放到这个目录。
root350983744ebf:~# mkdir /usr/local/openresty/lua
root350983744ebf:~# cd /usr/local/openresty/lua
root350983744ebf:/usr/local/openresty/lua# cp /root/AddressBook_capnp.lua .在这目录新建一个 lua 程序文件 main.lua内容如下
local addressBook require AddressBook_capnp
local capnp require capnp
local cjson require cjson
local util require capnp.utillocal data {people {{id 123,name Alice,email aliceexample.com,phones {{number 555-1212,[type] MOBILE,},},employment {school MIT,},},{id 456,name Bob,email bobexample.com,phones {{number 555-4567,[type] HOME,},{number 555-7654,[type] WORK,},},employment {unemployed Void,},},}
}local bin addressBook.AddressBook.serialize(data)
local decoded addressBook.AddressBook.parse(bin)ngx.say(cjson.encode(decoded))这个程序将一个 lua 数据【数据格式是按照 AddressBook.capnp 文件定义的】序列化成 capnp 二进制数据然后将二进制数据反序列化成 lua 数据最后使用 cjson 库将 lua 数据序列化成 json 格式使用 nginx 输出。
4. 验证程序
修改 nginx 配置文件【 /usr/local/openresty/nginx/conf/nginx.conf】内容为
worker_processes 1;events {worker_connections 1024;
}http {lua_package_path /usr/local/openresty/lua/?.lua;;;server {listen 80;server_name localhost;location /capnp {content_by_lua_file /usr/local/openresty/lua/main.lua;}}
}启动 nginx 并验证结果
root350983744ebf:~# /usr/local/openresty/nginx/sbin/nginx root350983744ebf:~#
root350983744ebf:~# curl 127.0.0.1/capnp
{people:[{phones:[{number:555-1212,type:MOBILE}],id:123,name:Alice,employment:{school:MIT},email:aliceexample.com},{phones:[{number:555-4567,type:HOME},{number:555-7654,type:WORK}],id:456,name:Bob,employment:{unemployed:Void},email:bobexample.com}]}和预期相符。
