* fix: Use simple function name for tracing operation name
Every span has an operation name, which shows up in multiple places in
the Jaeger UI. Verbose function names like
`github.com/influxdata/influxdb/kit/tracing.StartSpanFromContext`
are not readable in this UI. Shorter function names like
`StartSpanFromContext` improve UX. Context is not lost because (1) the
filename and line number are logged with the span and (2) spans are
understood in the context of other spans, marked with service name and
operation name.
Extra cost is ~22 ns per call to StartSpanFromContext. No additional
memory is allocated.
* goimports
* slice more than function name as span operatio name
Jacob Marble
Jacob Marble
Stuart Carnie