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fix(logger): fix json formatter 

crash when invalid string as json key.
This commit is contained in:
Zaiming Shi 2021-05-06 14:05:35 +02:00 committed by Zaiming (Stone) Shi
parent eb0488828b
commit cfec4c9690
1 changed files with 8 additions and 6 deletions
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14
src/emqx_logger_jsonfmt.erl
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@ -55,7 +55,7 @@ format(Msg, Meta, Config) ->
try Meta#{msg => format_msg(Msg, Meta, Config)}
catch
C:R:S ->
Meta#{ msg => "emqx_logger_jsfmt_format_error"
Meta#{ msg => "emqx_logger_jsonfmt_format_error"
, fmt_raw_input => Msg
, fmt_error => C
, fmt_reason => R
@ -203,13 +203,15 @@ json_kv('$kind', Kind, Data, Config) -> %% snabbkaffe
json_kv(K0, V, Data, Config) ->
K = json_key(K0),
case is_map(V) of
true -> maps:put(json(K, Config), json_obj(V, Config), Data);
true -> maps:put(json(K, Config), best_effort_json_obj(V, Config), Data);
false -> maps:put(json(K, Config), json(V, Config), Data)
end.
json_key('') -> throw({badkey, ''});
json_key("") -> throw({badkey, ""});
json_key(<<>>) -> throw({badkey, <<>>});
json_key('' = K) -> throw({badkey, K});
json_key("" = K) -> throw({badkey, K});
json_key("\"\"" = K) -> throw({badkey, K});
json_key(<<>> = K) -> throw({badkey, K});
json_key(<<"\"\"">> = K) -> throw({badkey, K});
json_key(A) when is_atom(A) -> atom_to_binary(A, utf8);
json_key(Term) ->
try unicode:characters_to_binary(Term, utf8) of
@ -249,7 +251,7 @@ filter(Map) ->
Keys = lists:filter(
fun(K) ->
try json_key(K), true
catch _ : _ -> false
catch throw : {badkey, _} -> false
end
end, maps:keys(Map)),
maps:with(Keys, Map).