Class: ScoutApm::Instruments::NetHttp

Inherits:
Object
  • Object
show all
Defined in:
lib/scout_apm/instruments/net_http.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(context) ⇒ NetHttp

Returns a new instance of NetHttp.



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# File 'lib/scout_apm/instruments/net_http.rb', line 6

def initialize(context)
  @context = context
  @installed = false
end

Instance Attribute Details

#context ⇒ Object (readonly)

Returns the value of attribute context.



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# File 'lib/scout_apm/instruments/net_http.rb', line 4

def context
  @context
end

Instance Method Details

#install(prepend:) ⇒ Object 



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# File 'lib/scout_apm/instruments/net_http.rb', line 19

def install(prepend:)
  if defined?(::Net) && defined?(::Net::HTTP)
    @installed = true

    logger.info "Instrumenting Net::HTTP. Prepend: #{prepend}"

    if prepend
      ::Net::HTTP.send(:include, ScoutApm::Tracer)
      ::Net::HTTP.send(:prepend, NetHttpInstrumentationPrepend)
    else
      ::Net::HTTP.class_eval do
        include ScoutApm::Tracer

        def request_with_scout_instruments(*args, &block)
          self.class.instrument("HTTP", "request", :ignore_children => true, :desc => request_scout_description(args.first)) do
            request_without_scout_instruments(*args, &block)
          end
        end

        def request_scout_description(req)
          path = req.path
          path = path.path if path.respond_to?(:path)

          # Protect against a nil address value
          if @address.nil?
            return "No Address Found"
          end

          max_length = ScoutApm::Agent.instance.context.config.value('instrument_http_url_length')
          (@address + path.split('?').first)[0..(max_length - 1)]
        rescue
          ""
        end

        alias request_without_scout_instruments request
        alias request request_with_scout_instruments
      end
    end
  end
end

#installed? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/scout_apm/instruments/net_http.rb', line 15

def installed?
  @installed
end

#logger ⇒ Object 



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# File 'lib/scout_apm/instruments/net_http.rb', line 11

def logger
  context.logger
end