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nginx_lua fastdfs module
function query_update_storage(self, fileid)
local pos = fileid:find('/')
if not pos then
return nil
else
local group_name = fileid:sub(1, pos-1)
local file_name = fileid:sub(pos + 1)
local res = self:query_update_storage_ex(group_name, file_name)
res.file_name = file_name
return res
end
end
query_update_storage调用了 query_update_storage_ex,而后者会有一些情况会返回nil,但在query_update_storage中,却并没有对返回nil的情况作出判断:
local res = self:query_update_storage_ex(group_name, file_name)
res.file_name = file_name
当res为nil时,是不应该进行res.file_name = file_name操作的吧?
https://github.com/azurewang/Nginx_Lua-FastDFS/blob/master/resty/fastdfs.lua
18 local TRACKER_PROTO_CMD_SERVICE_QUERY_UPDATE = 103query_update
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