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[Fix] CacheStore-Redis 修复 RemoveElementByIndex 脚本中对无效项判断的错误;

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[Fix] RemoveElementByIndex.lua 修复范围溢出, 不存在键检查失效的问题;
This commit is contained in:
LamGC 2021-01-11 16:24:55 +08:00
parent e270c6cb1d
commit f1e76092a0
Signed by: LamGC
GPG Key ID: 6C5AE2A913941E1D
1 changed files with 13 additions and 10 deletions
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23
ContentGrabbingJi-CacheStore-redis/src/main/lua/RemoveElementByIndex.lua
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@ -1,10 +1,3 @@
local key = tostring(KEYS[1])
local index = tonumber(ARGV[1])
if (key == nil) or (index == nil) then
return 0
end
local function getRandom(n)
local t = {
"0","1","2","3","4","5","6","7","8","9",
@ -16,13 +9,23 @@ local function getRandom(n)
s = s .. t[math.random(#t)]
end;
return s
end;
end
local flag = getRandom(24)
local key = tostring(KEYS[1])
local index = tonumber(ARGV[1])
if (redis.call("llen", key) <= index) or redis.call("lIndex", key, index) == nil then
if (key == nil) or (index == nil) or (redis.call("exists", key) == false) then
return 0
end
local listLength = redis.call("llen", key)
if listLength == 0 then
return 0
end
if (index < 0) or (index >= listLength) or redis.call("lIndex", key, index) == nil then
return 0
else
local flag = getRandom(24)
redis.call("lSet", key, index, flag);
return redis.call("lRem", key, 0, flag);
end