Package and directory structure

[c24t]

Decide on the directory structure and packages for the new repo. Borrowing from OpenCensus, this might look like:

context/
contrib/
opentelemetry/
  api/
    logs/
    metrics/
    tags/
    trace/
  sdk/
    common/
    logs/
    metrics/
    tags/
    trace/

Changes as compared to OC:

• api and sdk are separate packages
• stats has been merged into metrics

Open questions:

• What do we want to name the new packages: opentelemetry-api and opentelemetry-sdk, or just opentelemetry for the implementation package?
• Should we continue to package context separately?
• Should we distinguish between exporters and integrations (or "adapters") in contrib?

This assumes that we're still using namespace packages to create multiple distributions from the same codebase.

[c24t]

See also @mayurkale22's proposal for opentelemetry-node.

[carlosalberto]

Hey hey,

What do we want to name the new packages: opentelemetry-api and opentelemetry-sdk, or just opentelemetry for the implementation package?

As some vendors may need to only consume (implement) the API, I'd personally stick to opentelemetry-sdk for the SDK, to avoid confusion. For the API, either opentelemetry-api or opentelemetry would be fine.

The rest look fine to me (although I'm still getting familiar with the existing codebase ;) )