While working in the OT <> Zipkin bridge I found very inconvenient the fact that I should always need to pass a value for $spanOptions even if there is no values on it.
Another important concern here is the default start timestamp in the SpanOptions. As a vendor agnostic spec we can not set a default timestamp as of the unit depends on the vendor: ex. Zipkin uses microtime by default whereas datadog uses nanotime and other vendors could use a different one so I added documentation to the startSpan method.
While working in the
OT<>Zipkinbridge I found very inconvenient the fact that I should always need to pass a value for$spanOptionseven if there is no values on it.Another important concern here is the default start timestamp in the
SpanOptions. As a vendor agnostic spec we can not set a default timestamp as of the unit depends on the vendor: ex. Zipkin uses microtime by default whereas datadog uses nanotime and other vendors could use a different one so I added documentation to thestartSpanmethod.Ping @yurishkuro @felixfbecker @beberlei