Method: Sentry::PropagationContext#initialize

Defined in:
lib/sentry/propagation_context.rb

#initialize(scope, env = nil) ⇒ PropagationContext 



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# File 'lib/sentry/propagation_context.rb', line 83

def initialize(scope, env = nil)
  @scope = scope
  @parent_span_id = nil
  @parent_sampled = nil
  @baggage = nil
  @incoming_trace = false
  @sample_rand = nil

  if env
    sentry_trace_header = env["HTTP_SENTRY_TRACE"] || env[SENTRY_TRACE_HEADER_NAME]
    baggage_header = env["HTTP_BAGGAGE"] || env[BAGGAGE_HEADER_NAME]

    if sentry_trace_header
      sentry_trace_data = self.class.extract_sentry_trace(sentry_trace_header)

      if sentry_trace_data
        @trace_id, @parent_span_id, @parent_sampled = sentry_trace_data

        @baggage =
          if baggage_header && !baggage_header.empty?
            Baggage.from_incoming_header(baggage_header)
          else
            # If there's an incoming sentry-trace but no incoming baggage header,
            # for instance in traces coming from older SDKs,
            # baggage will be empty and frozen and won't be populated as head SDK.
            Baggage.new({})
          end

        @sample_rand = self.class.extract_sample_rand_from_baggage(@baggage, @trace_id)

        @baggage.freeze!
        @incoming_trace = true
      end
    end
  end

  @trace_id ||= Utils.uuid
  @span_id = Utils.uuid.slice(0, 16)
  @sample_rand ||= self.class.generate_sample_rand(@baggage, @trace_id, @parent_sampled)
end