Remove domain from event api.

[breedx-splk]

See open-telemetry/semantic-conventions#473 for details. The events working group has combined the event.name and event.domain by just having dot-separated prefixes on event names. This updates the API to match that expectation.

[codecov]

Codecov Report

Attention: Patch coverage is 85.71429% with 1 lines in your changes are missing coverage. Please review.

Project coverage is 91.05%. Comparing base (1d4a2f4) to head (f57a52a).
Report is 1 commits behind head on main.

Files	Patch %	Lines
...try/sdk/logs/internal/SdkEventEmitterProvider.java	80.00%	1 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff              @@
##               main    #6253      +/-   ##
============================================
- Coverage     91.06%   91.05%   -0.01%     
  Complexity     5695     5695              
============================================
  Files           621      621              
  Lines         16667    16658       -9     
  Branches       1707     1707              
============================================
- Hits          15177    15168       -9     
+ Misses          997      996       -1     
- Partials        493      494       +1     

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[jack-berg]

In #6001 I made this change, along with other changes reflecting spec changes like adding a payload field, setters for severity, context, etc. There are still a couple of open questions whose answers would churn the API / user experience:

• Should event fields be part of the global attribute registry? semantic-conventions#505: The answer will dictate how the event API is used, and how we design / document the API for body and attributes.
• Add Provider to the Event API opentelemetry-specification#3878: Could potentially change how the API is structured.
• Rename EventLogger to EventEmitter opentelemetry-specification#3869: Could confirm the existing naming or cause it to need to be changed.
• Merge opentelemetry-api-events into opentelemetry-extension-incubator #6121: Would change the artifact location of the event API.

I think making all of these changes in one release would be optimal from the users standpoint, since they only need to digest the breaking changes once. But there is also an advantage to staying relatively in line with the spec, even if all the questions haven't been hashed out. WDYT?

cc @open-telemetry/java-approvers

[trask]

I think making all of these changes in one release would be optimal from the users standpoint, since they only need to digest the breaking changes once.

👍

but also ok with me to merge if someone wants this particular change sooner

[breedx-splk]

I think making all of these changes in one release would be optimal from the users standpoint, since they only need to digest the breaking changes once.

Looking for input from other approvers as well. I definitely wanted to align the API with the spec, since it was one of the first decisions the event WG made. My thinking is that users would hopefully favor changes in unstable APIs over having APIs that don't match the spec.

[trask]

we've gotten feedback from @brunobat and @jonatan-ivanov that breaking changes in unstable APIs has created a lot of extra work for them, but I'm not sure if there's much use of the event api yet, so maybe no need to consolidate breaking changes into a single release

[brunobat]

We are not using it yet, but we plan to. It should be fine.

[jonatan-ivanov]

Thanks for the heads-up, it should be ok from Micrometer perspective too.

[breedx-splk]

Now that the EventLogger name is decided, there are going to be a series of changes around events. Would be nice to get this going as a start...

[jack-berg]

What do you think about targeting the April release to group these changes together?

[breedx-splk]

What do you think about targeting the April release to group these changes together?

Works for me. 👍🏻