【高级技巧】蓝绿部署：双环境切换的发布封装

local deploy = { active = "blue", greenReady = false }
local function healthCheck(env)
    local ok, err = pcall(probeEnv, env)
    if not ok then
        print(env .. " 探活失败：" .. tostring(err))
        return false
    end
    return true
end
local function switchToGreen()
    if not deploy.greenReady or not healthCheck("green") then
        print("绿环境未就绪，切换拒绝")
        return false
    end
    deploy.active = "green"
    print("流量已切换至绿环境")
    return true
end
local function rollbackToBlue()
    deploy.active = "blue"
    print("已回滚至蓝环境")
end
local function route(name, payload)
    if deploy.active == "green" then
        return sendToGreen(name, payload)
    end
    return sendToBlue(name, payload)
end

deploy.greenReady = deployGreenAndWarmup()