Module: SignalFx::Tracing::Instrumenter::Rails

Defined in:
lib/signalfx/tracing/instrumentation/rails.rb

Class Method Summary collapse

Class Method Details

.instrument(opts = {}) ⇒ Object 



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# File 'lib/signalfx/tracing/instrumentation/rails.rb', line 10

def instrument(opts = {})
  return if @instrumented

  # check for required gems
  begin
    require 'active_support'
    require 'rails'
  rescue LoadError
    return
  end

  begin
    require 'rails/instrumentation'
    require 'rack/tracer'
  rescue LoadError => e
    puts e.message
    return
  end

  if opts.fetch(:rack_tracer, true)
    # add rack middlewares
    ::Rails.configuration.middleware.insert(0, ::Rack::Tracer)
  end

  exclude_events = opts.fetch(:exclude_events, [])
  tracer = opts.fetch(:tracer, OpenTracing.global_tracer)

  ::Rails::Instrumentation.instrument(tracer: tracer, exclude_events: exclude_events)

  @instrumented = true
end