Class: RSpec::Trace::Consumer

Inherits:
Object
  • Object
show all
Defined in:
lib/rspec/trace/consumer.rb

Instance Method Summary collapse

Constructor Details

#initialize(input, traceparent_string = nil) ⇒ Consumer

Returns a new instance of Consumer.



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# File 'lib/rspec/trace/consumer.rb', line 10

def initialize(input, traceparent_string = nil)
  @input = input
  @tracer_provider = OpenTelemetry.tracer_provider
  @tracer_provider.sampler = OpenTelemetry::SDK::Trace::Samplers::ALWAYS_ON
  @tracer = @tracer_provider.tracer("rspec-trace-formatter", RSpec::Trace::VERSION)
  @spans = []
  @contexts = [load_context_from_traceparent(traceparent_string)]
  @tokens = []
end

Instance Method Details

#run ⇒ Object 



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# File 'lib/rspec/trace/consumer.rb', line 20

def run
  @input.each_line do |line|
    next if line.strip.empty?

    begin
      event = parse_event(line)
    rescue
      warn "invalid line: #{line}"
      next
    end

    case event[:event].to_sym
    when :initiated
      root_span_name = ENV.fetch("RSPEC_TRACE_FORMATTER_ROOT_SPAN_NAME", "rspec")
      create_span(name: root_span_name, timestamp: event[:timestamp])
      create_span(name: "examples loading", timestamp: event[:timestamp]) do |span|
        span.add_attributes("rspec.type" => "loading")
      end
    when :start
      complete_span(timestamp: event[:timestamp])
      create_span(name: "examples running", timestamp: event[:timestamp]) do |span|
        add_attributes_to_span(
          span: span,
          attributes: {count: event[:count], type: "suite"},
          attribute_prefix: "rspec"
        )
      end
    when :example_group_started
      create_span(name: event.dig(:group, :description), timestamp: event[:timestamp]) do |span|
        add_attributes_to_span(
          span: span,
          attributes: event[:group].merge(type: "example_group"),
          attribute_prefix: "rspec",
          exclude_attributes: [:description]
        )
      end
    when :example_group_finished
      complete_span(timestamp: event[:timestamp])
    when :example_started
      create_span(name: event.dig(:example, :description), timestamp: event[:timestamp]) do |span|
        add_attributes_to_span(
          span: span,
          attributes: event[:example].merge(type: "example"),
          attribute_prefix: "rspec",
          exclude_attributes: [:description]
        )
      end
    when :example_passed
      complete_span(timestamp: event[:timestamp]) do |span|
        add_attributes_to_span(
          span: span,
          attributes: event.dig(:example, :result),
          attribute_prefix: "rspec.result"
        )
      end
    when :example_pending
      complete_span(timestamp: event[:timestamp]) do |span|
        add_attributes_to_span(
          span: span,
          attributes: event.dig(:example, :result),
          attribute_prefix: "rspec.result"
        )
      end
    when :example_failed
      complete_span(timestamp: event[:timestamp]) do |span|
        add_attributes_to_span(
          span: span,
          attributes: event.dig(:example, :result),
          attribute_prefix: "rspec.result"
        )
        event_attributes = {
          "exception.type" => event.dig(:exception, :type),
          "exception.message" => event.dig(:exception, :message),
          "exception.stacktrace" => event.dig(:exception, :backtrace)
        }
        span.add_event("exception", attributes: event_attributes, timestamp: event[:timestamp])
        span.status = OpenTelemetry::Trace::Status.error
      end
    when :stop
      complete_span(timestamp: event[:timestamp]) until @spans.empty?
      @tracer_provider.force_flush
      exit
    end
  end
end