Function json_thread 

pub fn json_thread() -> DefaultGuard

Turn on json defaults for the local thread returning a guard, when the guard is dropped the layers will be unsubscribed.

Examples

Example of using two subscribers on the same thread, second event loses field from first span

use traceon::{info, info_span};

let _guard = traceon::on_thread();
let _span = info_span!("span_with_field", field = "temp", "cool").entered();
info!("first subscriber");

let _guard = traceon::json_thread();
let _span = info_span!("span_with_no_field").entered();
info!("second subscriber")

output:

11:58:50 INFO first subscriber
    field: temp
    span:  span_with_field

{
  "time": "2023-01-02T04:59:00.841691+00:00",
  "level": "INFO",
  "message": "second subscriber",
  "span": "span_with_no_field"
}