Refactor/deprecate trace config

[pitoniak32]

resolves: #2294

Changes

Moving away from trace::Config and .with_config(...) to remain consistent with the MeterProvider, and LoggerProvider.

Migration Guide

Moving away from TracerProvider::builder().with_config(trace::Config::default()).

Simple Example

The provider interface should be similar to the old method. For example, a TracerProvider being configured.

// old
let tracer_provider: TracerProvider = TracerProvider::builder()
    .with_config(Config::default().with_resource(Resource::empty()))
    .build();

// new
let tracer_provider: TracerProvider = TracerProvider::builder()
    .with_resource(Resource::empty())
    .build();

Advanced Example

// old
let tracer_provider = TracerProvider::builder()
    .with_config(
        Config::default()
            .with_resource(Resource::empty())
            .with_sampler(Sampler::AlwaysOn)
            .with_max_events_per_span(16),
    )
    .build();

// new
let tracer_provider = TracerProvider::builder()
    .with_resource(Resource::empty())
    .with_sampler(Sampler::AlwaysOn)
    .with_max_events_per_span(16)
    .build();

Merge requirement checklist

• CONTRIBUTING guidelines followed
• Unit tests added/updated (if applicable)
• Appropriate CHANGELOG.md files updated for non-trivial, user-facing changes
• Changes in public API reviewed (if applicable)

[codecov]

Codecov Report

Attention: Patch coverage is 50.00000% with 29 lines in your changes missing coverage. Please review.

Project coverage is 79.5%. Comparing base (41afd7f) to head (7e6645c).
Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
opentelemetry-sdk/src/trace/provider.rs	40.4%	28 Missing ⚠️
opentelemetry-zipkin/src/exporter/mod.rs	0.0%	1 Missing ⚠️

Additional details and impacted files

@@           Coverage Diff           @@
##            main   #2303     +/-   ##
=======================================
- Coverage   79.6%   79.5%   -0.2%     
=======================================
  Files        123     123             
  Lines      21263   21293     +30     
=======================================
- Hits       16940   16938      -2     
- Misses      4323    4355     +32     

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[cijothomas]

we could potentially offer an easier ways for users who is just trying to add service name. For another time!

[cijothomas]

Please add a changelog too.

[cijothomas]

LGTM. Lets add changelog too, will merge after one more approval.

Note: This will be part of 0.27.1 as there is no actual method removal, just deprecation warning this time. Actual removal will be 0.28.0 time only

[lalitb]

LGTM, with nit comments.

[lalitb]

Would be good to cleanup this instead of having deprecated code. Not a blocker for this PR though :)

[pitoniak32]

it seems like Zipkin needs to be updated to follow the builder pattern that was added for otlp also, its currently using the pipeline version.

I will try and get this refactored to not use the allow.

[pitoniak32]

maybe there can be a followup for the zipkin to match the otlp crate.

[cijothomas]

Its best to do as a follow up to keep the scope for this PR smaller.

[pitoniak32]

yup, that's what I was thinking. I went simple with the approach on this PR, but I would like to open another to move to the Builder pattern if that would be welcomed

[pitoniak32]

my current change actually ignores the config, I'm going to revert to using the deprecated annotation, and then do a followup PR to move to the builder pattern to avoid too many changes in this PR.