Contents

# frozen_string_literal: true

module Zipkin
  # SpanContext holds the data for a span that gets inherited to child spans
  class SpanContext
    def self.create_parent_context(sampler = Samplers::Const.new(true))
      trace_id = TraceId.generate
      sampled = sampler.sample?(trace_id: trace_id)
      new(trace_id: trace_id, span_id: trace_id, sampled: sampled)
    end

    def self.create_from_parent_context(span_context)
      new(
        span_id: TraceId.generate,
        parent_id: span_context.span_id,
        trace_id: span_context.trace_id,
        sampled: span_context.sampled?
      )
    end

    attr_reader :span_id, :parent_id, :trace_id, :baggage

    def initialize(span_id:, parent_id: nil, trace_id:, sampled:, baggage: {})
      @span_id = span_id
      @parent_id = parent_id
      @trace_id = trace_id
      @sampled = sampled
      @baggage = baggage
    end

    def sampled?
      @sampled
    end

    # NOTE: This method is not defined in OpenTracing Ruby spec. Use with
    # caution.
    def to_h
      {
        span_id: @span_id,
        parent_id: @parent_id,
        trace_id: @trace_id,
        sampled: @sampled
      }
    end
  end
end

Version data entries

4 entries across 4 versions & 1 rubygems

Version	Path
zipkin-1.6.3	lib/zipkin/span_context.rb
zipkin-1.6.2	lib/zipkin/span_context.rb
zipkin-1.6.1	lib/zipkin/span_context.rb
zipkin-1.6.0	lib/zipkin/span_context.rb