Support JSON log format in faro.receiver

[sigurdfalk]

Request

Currently, the only available logging format supported by the Faro Receiver is logfmt. JSON is a widely adopted standard for logging and is also the only structured format supported in addition to logfmt in LogQL queries.

Ref: https://grafana.slack.com/archives/C01050C3D8F/p1728549514784879

Use case

Our concrete use-case is the we use the faro.receiver which uses logfmt , but our developers complains that this makes combined searches hard for them because everything else we have in our company uses json as log format.

[github-actions]

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[ravishankar15]

Hi Team, I would like to work on this issue, I can see logs, traces and metrics exported from receiver. I think this format is applicable only for logs ? I am hoping the format option is only applicable for logs ? Correct me if my understanding is incorrect

[sigurdfalk]

@ravishankar15 Correct, this is only applicable to logs being able to be exported as JSON 👍🏻