Module: RailsOpentracer

Defined in:
lib/rails_opentracer.rb,
lib/rails_opentracer/version.rb,
lib/rails_opentracer/middleware.rb,
lib/rails_opentracer/span_helpers.rb,
lib/rails_opentracer/zipkin_config.rb

Defined Under Namespace

Modules: SpanHelpers Classes: Middleware, Railtie, ZipkinConfig

Constant Summary collapse

VERSION = 
'0.1.40'.freeze

Instance Method Summary collapse

Instance Method Details

#get(url) ⇒ Object 



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# File 'lib/rails_opentracer.rb', line 11

def get(url)
  connection =
    Faraday.new do |con|
      con.use Faraday::Adapter::NetHttp
    end
  if ZipkinConfig.opentracer_enabled_and_zipkin_url_present?
    carrier = {}
    OpenTracing.inject(@span.context, OpenTracing::FORMAT_RACK, carrier)
    connection.headers = denilize(carrier)
  elsif ZipkinConfig.opentracer_enabled?
    Rails.logger.error 'TRACER_ERROR: `ZIPKIN_SERVICE_URL` environment variable is not defined'
  end
  connection.get(url)
end

#with_span(name) ⇒ Object 



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# File 'lib/rails_opentracer.rb', line 26

def with_span(name)
  if ZipkinConfig.opentracer_enabled_and_zipkin_url_present?
    @span =
      if $active_span.present?
        OpenTracing.start_span(name, child_of: $active_span)
      else
        OpenTracing.start_span(name)
      end
    yield if block_given?
    @span.finish
  elsif block_given?
    yield
  end
end