Exclude metadata

[skeet70]

I have a json subscriber and I'm flattening spans. Instead of ending up with whatever the last spans name was at the top, I'd like to have a collapsed version of all the names along the way. I've written a function to get that collapsed name from whatever the current span is when it's called, but tracing doesn't allow for dynamic span names, so I can't use it directly.

It'd be nice to have an option to skip logging specific metadata fields (like "name"), so I could include my "contexts" field that has all the names collapsed.

[mladedav]

The name is the only additional metadata field other than the fields you explicitly set in the span! macro. Is that what you mean?

Or do you want a way to exclude some normal span fields from the output?