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lua 配置nats执行环境

lua 配置nats执行环境

作者: SailSea | 来源:发表于2020-09-29 11:17 被阅读0次

    脚本参考地址:https://github.com/DawnAngel/lua-nats/tree/master/examples
    lua subscribe.lua

    package.path = '../src/?.lua;src/?.lua;' .. package.path
    pcall(require, 'luarocks.require')
    
    local nats = require 'nats'
    
    local params = {
        host = '127.0.0.1',
        port = 4222,
    }
    
    local client = nats.connect(params)
    
    local function subscribe_callback(payload)
        print('Received data: ' .. payload)
    end
    
    -- client:enable_trace()
    client:connect()
    local subscribe_id = client:subscribe('foo', subscribe_callback)
    client:wait(2)
    client:unsubscribe(subscribe_id)
    
    

    publish.lua

    package.path = '../src/?.lua;src/?.lua;' .. package.path
    pcall(require, 'luarocks.require')
    
    local nats = require 'nats'
    
    local params = {
        host = '127.0.0.1',
        port = 4222,
    }
    
    local client = nats.connect(params)
    
    -- client:enable_trace()
    client:connect()
    
    client:publish('foo', 'bar A')
    client:publish('foo', 'bar B')
    

    1.linux安装lua5.3
    参考菜鸟教程:https://www.runoob.com/lua/lua-environment.html

    curl -R -O http://www.lua.org/ftp/lua-5.3.0.tar.gz
    tar zxf lua-5.3.0.tar.gz
    cd lua-5.3.0
    make linux test
    make install
    

    2.lua publish.lua脚本执行
    先看下lua nats_pub脚本
    直接执行lua publish.lua 报错 lua: ../src/nats.lua:10: module 'cjson' not found
    查看nats.lua代码发现缺少cjson,uuid,sockert

    2.安装cjson

    wget https://www.kyne.com.au/~mark/software/download/lua-cjson-2.1.0.zip
    unzip  lua-cjson-2.1.0.zip
    cd cd lua-cjson-2.1.0
    修改Makefile文件
    PREFIX = /usr/local
    LUA_CMODULE_DIR = $(PREFIX)/lib/lua/5.3
    "/usr/local"是安装lua5.3中的Makefile配置INSTALL_TOP= /usr/local
    

    3.使用luarocks安装uuid和socket

    http://luarocks.org/releases/luarocks-2.1.0.tar.gz
    tar zxpf luarocks-3.3.1.tar.gz
    /usr/local/bin/luarocks install uuid
    /usr/local/bin/luarocks install socket
    

    4.执行lua subscribe.lua 和publish.lua成功发送和接收消息

    lua publish.lua
    lua subscribe.lua 
    Received data: bar A
    Received data: bar B
    

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