Investigate improvements to httprequest parsing for logs

[dashpole]

Follow-up to #697

In

opentelemetry-operations-go/exporter/collector/logs.go

Line 540 in 0c4b0bb

func (l logMapper) parseHTTPRequest(httpRequestAttr pcommon.Value) (*logtypepb.HttpRequest, error) {

, we translate the http attribute to the structured fields in the LogRecord.

We might be able to directly unmarshal into https://pkg.go.dev/google.golang.org/genproto/googleapis/logging/type#HttpRequest, as that has the same tags. I wasn't able to get that to work in my experimentation, as I think it used the tags with underscores, rather than the camelCase tag name.

If it is a map, we might be able to go directly from the map to attributes without the conversion to a json string in-between.