= TRACE, json
log4perl.appender.json = Log::Log4perl::Appender::File
log4perl.appender.json.layout = Log::Log4perl::Layout::JSON::Readable
log4perl.appender.json.layout.
p}
log4perl.appender.json.layout.field.time = %d
log4perl.appender.json.layout.field.trace-id = %O{opentracing.trace_id}
log4perl.appender.json.layout.field.span-id = %O{o
pentracing.span_id}
log4perl.appender.json.layout.canonical = 1
log4perl.appender.json.layout.first_fields = time, trace-id, span-id
};
Log::Log4perl::init( \$confi