box-server/common/utils/redisUtil.lua

--[[
Descripttion:
version:
Author: Neo,Huang
Date: 2022-01-06 16:50:11
LastEditors: Neo,Huang
LastEditTime: 2022-01-25 16:30:38
--]]
local lib_game_redis = require("lib_game_redis")

-- redis基础操作
-- 本文件所有处理不会对module对应的数据库进行操作，玩家个人数据请使用 data.module
local root = {}

----------------------------------------
-- main key
----------------------------------------
function root.get_int(key)
    local val = lib_game_redis:get(key)
    return val and tonumber(val) or 0
end
function root.get_json(key)
    local val = lib_game_redis:get(key)
    val = val and cjson_decode(val) or {}
    -- 主要针对C++中的NULL
    if is_empty(val) then
        val = {}
    end
    return val
end
----------------------------------------
-- subKey
----------------------------------------
function root.hset(tb, key, val)
    if is_empty(tb) or is_empty(key) then
        return
    end
    if is_nil(val) then
        return root.hdel(tb, key)
    end
    local info = val
    if type(val) == "table" then
        info = cjson_encode(val)
    end
    return lib_game_redis:hset(tb, key, info)
end

function root.hget_int(tb, key)
    local val = lib_game_redis:hget(tb, key)
    return val and tonumber(val) or 0
end

function root.hget_json(tb, key)
    local val = lib_game_redis:hget(tb, key)
    val = val and cjson_decode(val) or {}
    -- 主要针对C++中的NULL
    if is_empty(val) then
        val = {}
    end
    return val
end

function root.hmset(key, mapData)
    if is_empty(key) or is_empty(mapData) then
        return false
    end
    local res = {}
    for k, v in pairs(mapData) do
        table.insert(res, k)
        table.insert(res, v)
    end

    return lib_game_redis:hmset(key, table.unpack(res))
end
-- 获取模块所有数据
function root.hgetall(key)
    local data = lib_game_redis:hgetall(key)
    if not is_empty(data) then
        local ret = {}
        for i = 1, #data, 2 do
            ret[data[i]] = data[i + 1]
        end

        return ret
    end
end
-- 自增
function root.hincrby(key, subKey, steps)
    if is_nil(key) or is_nil(subKey) then
        return
    end
    steps = steps or 1
    return lib_game_redis:hincrby(key, subKey, steps)
end

function root.do_eval(evalkey, keyCount, ...)
    local data = lib_game_redis:eval(root.evalStr[evalkey], keyCount, ...)
    return data
end

-- redis 执行 lua 脚本.
root.evalStr = {
    ["aaa"] = [[redis.call('lpush', KEYS[1], ARGV[1]); redis.call('ltrim', KEYS[1], 0, ARGV[2]);]],
    ["bbb"] = [["redis.call('zincrby',KEYS[1], ARGV[1], ARGV[2]);
        local scores    = redis.call('zscore', KEYS[1], ARGV[2]);
        local rank      = redis.call('zrevrank', KEYS[1], ARGV[2]);
        return {rank, scores};]]
}

return root