Module: Axn::Internal::Tracing

Defined in:
lib/axn/internal/tracing.rb

Class Method Summary collapse

Class Method Details

.supports_record_exception_option? ⇒ Boolean

Check if the OpenTelemetry tracer supports the record_exception option for in_span. This was added in opentelemetry-api 1.7.0 (2025-09-17). We cache the result since method signature doesn’t change at runtime.

Returns:

  • (Boolean) 


26
27
28
29
30
31
32
33
34
35
 
# File 'lib/axn/internal/tracing.rb', line 26

def supports_record_exception_option?
  return @supports_record_exception if defined?(@supports_record_exception)
  return @supports_record_exception = false unless defined?(OpenTelemetry)

  @supports_record_exception = begin
    OpenTelemetry::Trace::Tracer.instance_method(:in_span).parameters.any? { |_, name| name == :record_exception }
  rescue StandardError
    false
  end
end

.tracer ⇒ Object

Cache the tracer instance to avoid repeated lookups The tracer provider may cache internally, but we avoid the method call overhead We check defined?(OpenTelemetry) each time to handle cases where it’s loaded lazily



12
13
14
15
16
17
18
19
20
21
 
# File 'lib/axn/internal/tracing.rb', line 12

def tracer
  return nil unless defined?(OpenTelemetry)

  # Re-fetch if the tracer provider has changed (e.g., in tests with mocks)
  current_provider = OpenTelemetry.tracer_provider
  return @tracer if defined?(@tracer) && defined?(@tracer_provider) && @tracer_provider == current_provider

  @tracer_provider = current_provider
  @tracer = current_provider.tracer("axn", Axn::VERSION)
end