feat(propagation): otel baggage support

[ZStriker19]

What does this PR do?
Following the spec here: https://www.w3.org/TR/baggage/ we implement baggage propagation for the Ruby tracer
Motivation:

Change log entry

Additional Notes:

How to test the change?

[github-actions]

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^{Visited at: 2025-02-11 22:38:59 UTC}

[datadog-datadog-prod-us1]

Datadog Report

Branch report: zachg/baggage_support
Commit report: eee20a9
Test service: dd-trace-rb

❌ 2207 Failed (15 Known Flaky), 17720 Passed, 1395 Skipped, 10m 23.12s Total Time
❄️ 5 New Flaky

❌ Failed Tests (2207)

This report shows up to 5 failed tests.

• Auto Instrumentation of non Rails request which runs a query auto_instruments all relevant gems automatically - rspec - Details

  Expand for error

   Please invoke Datadog.configure at least once before calling this method
   
   Failure/Error: raise 'Please invoke Datadog.configure at least once before calling this method' unless @propagation
   
   RuntimeError:
     Please invoke Datadog.configure at least once before calling this method
   ./lib/datadog/tracing/contrib/http.rb:26:in \`extract'
   ./lib/datadog/tracing/contrib/rack/middlewares.rb:45:in \`call'
   /usr/local/bundle/gems/sinatra-2.2.4/lib/sinatra/base.rb:2004:in \`call'
   /usr/local/bundle/gems/sinatra-2.2.4/lib/sinatra/base.rb:1564:in \`block in call'
   ...
  

• ConcurrentRuby integration tests Concurrent::Async when context propagation is enabled behaves like deferred execution creates outer span without a parent - rspec - Details

  Expand for error

   unknown keyword: :baggage
   
   Failure/Error:
     def initialize(
       span_id: nil,
       span_name: nil,
       span_resource: nil,
       span_service: nil,
       span_type: nil,
       trace_distributed_tags: nil,
   ...
  

• ConcurrentRuby integration tests Concurrent::Async when context propagation is enabled behaves like deferred execution writes inner span to tracer - rspec - Details

  Expand for error

   unknown keyword: :baggage
   
   Failure/Error:
     def initialize(
       span_id: nil,
       span_name: nil,
       span_resource: nil,
       span_service: nil,
       span_type: nil,
       trace_distributed_tags: nil,
   ...
  

• ConcurrentRuby integration tests Concurrent::Async when context propagation is enabled behaves like deferred execution writes outer span to tracer - rspec - Details

  Expand for error

   unknown keyword: :baggage
   
   Failure/Error:
     def initialize(
       span_id: nil,
       span_name: nil,
       span_resource: nil,
       span_service: nil,
       span_type: nil,
       trace_distributed_tags: nil,
   ...
  

• ConcurrentRuby integration tests Concurrent::Async when context propagation is enabled inner span parent should be included in outer span - rspec - Details

  Expand for error

   unknown keyword: :baggage
   
   Failure/Error:
     def initialize(
       span_id: nil,
       span_name: nil,
       span_resource: nil,
       span_service: nil,
       span_type: nil,
       trace_distributed_tags: nil,
   ...
  

New Flaky Tests (5)

• Datadog::Tracing::Distributed::Datadog behaves like Datadog distributed format #extract with trace_id and span_id with trace_distributed_tags within an active trace with invalid tags sets error tag - rspec - Last Failure

  Expand for error

     expected: (/Failed to extract/)
          got: ("Error configuring integration http: uninitialized constant Datadog::Tracing::Distributed::Propagation::Baggage")
   Diff:
   @@ -1 +1 @@
   -[/Failed to extract/]
   +["Error configuring integration http: uninitialized constant Datadog::Tracing::Distributed::Propagation::Baggage"]
   
   
       expected: (/Failed to extract/)
            got: ("Error configuring integration http: uninitialized constant Datadog::Tracing::Distributed::Propagation::Baggage")
   ...
  

• Datadog::Tracing::Distributed::Datadog behaves like Datadog distributed format #extract with trace_id and span_id with trace_distributed_tags within an active trace with tags too large sets error tag - rspec - Last Failure

  Expand for error

     expected: (/tags are too large/)
          got: ("Error configuring integration http: uninitialized constant Datadog::Tracing::Distributed::Propagation::Baggage")
   Diff:
   @@ -1 +1 @@
   -[/tags are too large/]
   +["Error configuring integration http: uninitialized constant Datadog::Tracing::Distributed::Propagation::Baggage"]
   
   
       expected: (/tags are too large/)
            got: ("Error configuring integration http: uninitialized constant Datadog::Tracing::Distributed::Propagation::Baggage")
   ...
  

• Datadog::Tracing::Distributed::Datadog behaves like Datadog distributed format #inject! with TraceDigest with trace_distributed_tags within an active trace with invalid tags sets error tag - rspec - Last Failure

  Expand for error

     expected: (/Failed to inject/)
          got: ("Error configuring integration http: uninitialized constant Datadog::Tracing::Distributed::Propagation::Baggage")
   Diff:
   @@ -1 +1 @@
   -[/Failed to inject/]
   +["Error configuring integration http: uninitialized constant Datadog::Tracing::Distributed::Propagation::Baggage"]
   
   
       expected: (/Failed to inject/)
            got: ("Error configuring integration http: uninitialized constant Datadog::Tracing::Distributed::Propagation::Baggage")
   ...
  

• Datadog::Tracing::Distributed::Datadog behaves like Datadog distributed format #inject! with TraceDigest with trace_distributed_tags within an active trace with tags too large sets error tag - rspec - Last Failure

  Expand for error

     expected: (/tags are too large/)
          got: ("Error configuring integration http: uninitialized constant Datadog::Tracing::Distributed::Propagation::Baggage")
   Diff:
   @@ -1 +1 @@
   -[/tags are too large/]
   +["Error configuring integration http: uninitialized constant Datadog::Tracing::Distributed::Propagation::Baggage"]
   
   
       expected: (/tags are too large/)
            got: ("Error configuring integration http: uninitialized constant Datadog::Tracing::Distributed::Propagation::Baggage")
   ...
  

• Datadog::Tracing::Workers::AsyncTransport callbacks when raising errors does not re-raise - rspec - Last Failure

  Expand for error

   Failure/Error: expect(lines.count).to eq(1), "Expected single line, got #{lines.inspect}"
   ./spec/datadog/tracing/workers_spec.rb:37:in \`block in <main>'
   ./spec/spec_helper.rb:238:in \`block in <main>'
   ./spec/spec_helper.rb:123:in \`block in <main>'
   /usr/local/bundle/gems/webmock-3.13.0/lib/webmock/rspec.rb:37:in \`block in <main>'
   /usr/local/bundle/gems/rspec-wait-0.0.9/lib/rspec/wait.rb:46:in \`block in <main>'