Embed the embedded.Tracer into memTracer, to fulfil the updated interface

[samjewell]

I was trying to use this project go-mysql-server as a dependency alongside github.com/grafana/grafana-plugin-sdk-go/data. But the latter project depends on:

• go.opentelemetry.io/otel v1.31.0
• go.opentelemetry.io/otel/trace v1.31.0

When I updated my go modules with go mod tidy I started to hit a compilation error:

# github.com/dolthub/go-mysql-server/test
/Users/samjewell/go/pkg/mod/github.com/dolthub/[email protected]/test/mem_tracer.go:22:2: could not import go.opentelemetry.io/otel/trace/embedded (open : no such file or directory)
FAIL	github.com/grafana/poc-sql-expressions-embedded-sql/dolthub-go-mysql-server [build failed]
FAIL

Hence this change 🙏

[samjewell]

@jycor / @Hydrocharged any thoughts on this one 🙏 ?

[zachmu]

@max-hoffman you want to take a look at this? Not sure how it affects our upstreams.

[max-hoffman]

@max-hoffman you want to take a look at this? Not sure how it affects our upstreams.

The hosted API and DoltHub remote API are the only services that use OTEL as far as I can tell. So if the version bump is not backwards compatible LD will need a PR for interface changes. Removing the OTEL dependency from GMS would probably also work. Merging this PR as is would probably be OK.