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jsonlog

0.1.0
0.1.0 0.0.1

A custom formatter for the logger application that turns maps into json logs

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jsonlog src jsonlog_jsx_encoder.erl
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src/jsonlog_jsx_encoder.erl 

-module(jsonlog_jsx_encoder).



-export([custom_encode/1]).

%% custom encoder callback

-export([encode/2]).



%% the parser is unmodified but the term passed to the parser instance is

%% preencoded by the custom `encode/2` function below

custom_encode(Term) ->

    (jsx:parser(jsx_to_json, [], [escaped_strings]))(encode(Term, ?MODULE) ++ [end_json]).



%% this captures any instance that matches the record as a top level term, the value

%% for a map or proplist entry or a member of a list and returns a map to the parser

%% instead. anything else is handled by the default parser in `jsx_encoder`

encode(Pid, _EntryPoint) when is_pid(Pid) ->

    [jsonlog_utils:to_string(Pid)];

encode(Ref, _EntryPoint) when is_reference(Ref) ->

    [jsonlog_utils:to_string(Ref)];

encode(Tuple, _EntryPoint) when erlang:is_tuple(Tuple) , erlang:tuple_size(Tuple) > 2 ->

    %% should tuples be converted to lists or just turned into strings

    [jsonlog_utils:to_string(Tuple)];

encode(Term, EntryPoint) ->

    jsx_encoder:encode(Term, EntryPoint).