Marshal log record as JSON

[corentinmusard]

Problem Statement

I want to write log record to a file in JSON format, is there any way to do it?

I saw in #5172 (comment) that this feature has been postponed.

Proposed Solution

Export this method: func (e *Exporter) newRecordJSON(r sdklog.Record) recordJSON

[pellared]

This is not a stable JSON representation. See https://pkg.go.dev/go.opentelemetry.io/otel/exporters/stdout/stdoutlog#pkg-overview:

it does not provide an interchange format for OpenTelemetry that is supported with any stability or compatibility guarantees

However, it is possible we could provide such functionality as part of otlplogfile package. Reference:

• Add otlplogfile exporter #5408