【进阶实战】灰度放量失误：比例配置的校验封装

local STAGES = { 5, 25, 50, 100 }
local function validateRatio(ratio, currentStage)
    if type(ratio) ~= "number" or ratio % 1 ~= 0 then
        return false, "比例须为整数"
    end
    if ratio < 0 or ratio > 100 then
        return false, "比例须在 0 到 100 之间"
    end
    local target = STAGES[currentStage + 1]
    if target and ratio > target then
        return false, "超出阶梯上限 " .. target
    end
    return true
end
local function setRatio(ratio, stage)
    local ok, why = validateRatio(ratio, stage)
    if not ok then
        print("灰度比例被拒绝：" .. why)
        return false
    end
    setsysvarex("GrayRatio", ratio, 1)
    print("灰度比例更新为 " .. ratio)
    return true
end

local function alertRejected(ratio, why)
    setsysvarex("GrayAlert_" .. os.time(), ratio .. "|" .. why, 1)
end