【数据存储】日结对账：跨天结算数据的对账流程

local function countGive(n)
    local v = tonumber(getsysvar("DAY_GIVE") or "0") + n
    setsysvarex("DAY_GIVE", v, 1)
end
local function countCost(n)
    local v = tonumber(getsysvar("DAY_COST") or "0") + n
    setsysvarex("DAY_COST", v, 1)
end

setontimerex(154, 1800)
function ontimer154()
    if os.date("%H%M") ~= "0030" then return end
    local give = tonumber(getsysvar("DAY_GIVE") or "0")
    local cost = tonumber(getsysvar("DAY_COST") or "0")
    local diff = math.abs(give - cost)
    if diff > cost * 0.005 then
        sendmail("#值班老张", 901, "日结对账差异告警",
            "今日发放 " .. give .. "，消耗 " .. cost .. "，差异 " .. diff, "")
    end
    setsysvarex("DAY_GIVE", 0, 1)
    setsysvarex("DAY_COST", 0, 1)
end