WrightKD commented on issue #11646:
URL: https://github.com/apache/apisix/issues/11646#issuecomment-2416515511
The issue seems to be linked to the usage of xml2lua.
```lua
local decoders = {
xml = function(data)
local handler = xmlhandler:new()
local parser = xml2lua.parser(handler)
local ok, err = pcall(parser.parse, parser, data)
if ok then
return remove_namespace(handler.root)
else
return nil, err
end
end,
json = function(data)
return core.json.decode(data)
end,
encoded = function(data)
return decode_args(data)
end,
args = function()
return req_get_uri_args()
end,
}
```
If the [hander
](https://github.com/apache/apisix/blob/695ea3c29d067d3a445872974e59dff99b505499/apisix/plugins/body-transformer.lua#L103)
is still in memory for a given request, the previous result from the parser
will be appended to the result and break the transform. This can be reproduce
by calling the parser twice as per the issue manoelcampos/xml2lua#29 and
manoelcampos/xml2lua#92
```lua
local decoders = {
xml = function(data)
local handler = xmlhandler:new()
local parser = xml2lua.parser(handler)
local ok, err = pcall(parser.parse, parser, data)
ok, err = pcall(parser.parse, parser, data)
if ok then
return remove_namespace(handler.root)
else
return nil, err
end
end,
json = function(data)
return core.json.decode(data)
end,
encoded = function(data)
return decode_args(data)
end,
args = function()
return req_get_uri_args()
end,
}
```
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