【网络通信】跨服路由：跨服消息的转发链路设计

local ROUTE = { ["S1"] = "chan_s1", ["S2"] = "chan_s2", ["S3"] = "chan_s3" }
local function routeMsg(dstSrv, kind, payload)
    local chan = ROUTE[dstSrv]
    if chan == nil then
        sendmail("#运维老张", 918, "跨服路由异常", "未知目标服 " .. dstSrv .. "，消息已拦截", "")
        return false
    end
    sendluamsg(dstSrv, 7350, 0, 0, 0, kind .. "|" .. payload)
    return true
end

local PENDING = {}
local function sendTracked(dstSrv, kind, payload)
    local msgId = os.time() .. "|" .. dstSrv
    PENDING[msgId] = { t = os.time(), retry = 0 }
    routeMsg(dstSrv, kind, payload)
    return msgId
end
local function ackMsg(msgId)
    PENDING[msgId] = nil
end