Class: OpenTelemetry::Instrumentation::Rage::Handlers::Deferred

Inherits:
Rage::Telemetry::Handler
  • Object
show all
Defined in:
lib/opentelemetry/instrumentation/rage/handlers/deferred.rb

Overview

The class propagates OpenTelemetry context to deferred tasks and wraps the enqueuing and processing of deferred tasks in spans.

Class Method Summary collapse

Class Method Details

.create_enqueue_span(task_class:, task_context:) ⇒ Object

Parameters:

  • task_class (Class) —

    the class of the deferred task

  • task_context (Hash) —

    the context for the deferred task



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# File 'lib/opentelemetry/instrumentation/rage/handlers/deferred.rb', line 22

def self.create_enqueue_span(task_class:, task_context:)
  Rage::Instrumentation.instance.tracer.in_span("#{task_class} enqueue", kind: :producer) do |span|
    OpenTelemetry.propagation.inject(task_context)

    result = yield

    if result.error?
      span.record_exception(result.exception)
      span.status = OpenTelemetry::Trace::Status.error
    end
  end
end

.create_perform_span(task_class:, task:, task_context:) ⇒ Object

Parameters:

  • task_class (Class) —

    the class of the deferred task

  • task (Rage::Deferred::Task) —

    the deferred task instance

  • task_context (Hash) —

    the context for the deferred task



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# File 'lib/opentelemetry/instrumentation/rage/handlers/deferred.rb', line 38

def self.create_perform_span(task_class:, task:, task_context:)
  otel_context = OpenTelemetry.propagation.extract(task_context)

  OpenTelemetry::Context.with_current(otel_context) do
    parent_span_context = OpenTelemetry::Trace.current_span(otel_context).context
    links = [OpenTelemetry::Trace::Link.new(parent_span_context)] if parent_span_context.valid?

    span = Rage::Instrumentation.instance.tracer.start_root_span(
      "#{task_class} perform",
      links:,
      kind: :consumer
    )

    OpenTelemetry::Trace.with_span(span) do
      result = yield

      if result.error?
        span.record_exception(result.exception)
        span.status = OpenTelemetry::Trace::Status.error
      end
    ensure
      span.finish
    end
  end
end