The approach I would use is to implement a JSONMessage class or JSONMapMessage class (which seems reasonable that we should have) and then you would do
log.debug(new JSONMapMessage(map)); JSONMapMessage would override MapMessage’s asString() method to have it return asString(MapFormat.JSON); Ralph > On Dec 16, 2015, at 3:29 PM, Sebastian Esponda <[email protected]> wrote: > > Hi, > > When using the JSON layout, we'd like to know if it's possible to log > objects (instead simple Strings) so that the JSON output includes the > object itself (serialised by Jackson, which will discover the properties to > be serialised, adding the fields to the JSON structure accordingly) > > In other words, instead of: > > {...,"message": "some string", ... } > > Something similar this: > > log.debug(MyObj("a","b")) > {...,"MyObj": { "prop1": "a", "prop2": "b"},...} > > Is this possible? Looking at the source code, that would require creating a > LogEvent with extra fields, but it's not clear to me how to inject that > from the Logger.info(...) API. > > I was able to achieve something similar creating a custom marker that just > wraps an object. In this way AbstracJsonLayout class will find it (strictly > speaking, the Jackson mapper will) when "getMarker" is written. However > this results in the following: > > log.info(new EventMarker(MyObj("a","b")),"alfa"); > {.... "marker":{"event":{"prop1":"a","prop2":"b"}, "message":"alfa",....} > > Where "event"(*) and "marker" cannot be customised. Is this a right > approach? Should I try something different? I would appreciate any hints, > thank you. > > Sebastian > > (*) the "event" field is part of my custom EventMarker objects, so this > _could_ be changed dynamically using @JsonAnyGetter and holding a map where > we put(object.class.simpleClassName, object). But I'd like to confirm with > you this is a good approach before moving further... --------------------------------------------------------------------- To unsubscribe, e-mail: [email protected] For additional commands, e-mail: [email protected]
