Instrumentation needs to include a version.

[MrAlias]

Tracers and Meters both take instrumentation versions as an option. All instrumentation in this repo should included that. This will help in debugging and when a Views API is created could be used to disable or unify different versions of the same instrumentation running on the same server.

• A version should be defined for all instrumentation in this repository.
• All instrumentation needs to be updated to use this version as a Meter and Tracer instrumentation version.
• The instrumentation guidelines need to be updated to specify that a version should be set for instrumentation.

Instrumentation Punch List

• instrumentation/host
• instrumentation/google.golang.org/grpc/otelgrpc
• instrumentation/go.mongodb.org/mongo-driver/mongo/otelmongo
• instrumentation/net/http/otelhttp
• instrumentation/net/http/httptrace/otelhttptrace
• instrumentation/runtime
• instrumentation/github.com/labstack/echo/otelecho
• instrumentation/github.com/bradfitz/gomemcache/memcache/otelmemcache
• instrumentation/github.com/gin-gonic/gin/otelgin
• instrumentation/github.com/gocql/gocql/otelgocql
• instrumentation/github.com/emicklei/go-restful/otelrestful
• instrumentation/github.com/Shopify/sarama/otelsarama
• instrumentation/github.com/gorilla/mux/otelmux
• instrumentation/github.com/astaxie/beego/otelbeego
• instrumentation/gopkg.in/macaron.v1/otelmacaron

[MrAlias]

Reference example: https://github.com/open-telemetry/opentelemetry-go-contrib/pull/204/files#r470091488

[MrAlias]

From the SIG meeting:

All instrumentation in this repo MUST share the same version and it needs to match repository version. This will unify this repos approach and avoid confusion of how things are versioned. It will also alleviate needing to track which versions are compatible with version of otel.

This also means that a top-level repository version const should be created so all instrumentation can reference it.

[reggiemcdonald]

I could help out with adding versions to the existing instrumentation packages, if help is still needed on this?