Detect embedded JSON

[baelter]

Is your feature request related to a problem? Please describe.
We have log messages with mixed formats. logfmt and json, or plain text and json. I want to be able to use the json function and the "Prettify JSON" feature while keeping the entire log line. I can extract the json part, parse it and get it prettified, but not while preserving the rest of the log line. E.g.

my=mixed format=log line with:some {"embedded": "json"}

regexp (?P<json>\{.*\}) | line_format "{{.json}}" | json

>

{
  "embedded": "json"
}

Describe the solution you'd like

my=mixed format=log line with:some
{
  "embedded": "json"
}

• The json LogQL function should find embedded json.
• The "Prettify JSON" feature should find embedded json.

Describe alternatives you've considered
Using other log services.

Additional context
Expand/Collapse json embedded in log lines in Papertrail: