Class: BuilderApm::Methods::Instrumenter

Inherits:
Object
  • Object
show all
Defined in:
lib/builder_apm/methods/instrumenter.rb

Instance Method Summary collapse

Constructor Details

#initialize(root_path: Rails.root.to_s) ⇒ Instrumenter

Returns a new instance of Instrumenter.



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# File 'lib/builder_apm/methods/instrumenter.rb', line 4

def initialize(root_path: Rails.root.to_s)
  @root_path = root_path
  @call_times = {}
end

Instance Method Details

#process_trace_point(tp) ⇒ Object 



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# File 'lib/builder_apm/methods/instrumenter.rb', line 29

def process_trace_point(tp)
  if tp.event == :call
    process_call_event(tp)
  elsif tp.event == :return
    process_return_event(tp)
  end
end

#setup_trace ⇒ Object 



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# File 'lib/builder_apm/methods/instrumenter.rb', line 18

def setup_trace
  me = self
  TracePoint.new(:call, :return) do |tp|
    me.process_trace_point(tp) if me.valid_trace_point?(tp)
  end
end

#start ⇒ Object 



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# File 'lib/builder_apm/methods/instrumenter.rb', line 9

def start
  @trace = setup_trace
  @trace.enable
end

#stop ⇒ Object 



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# File 'lib/builder_apm/methods/instrumenter.rb', line 14

def stop
  @trace.disable unless @trace.nil?
end

#valid_trace_point?(tp) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/builder_apm/methods/instrumenter.rb', line 25

def valid_trace_point?(tp)
  !Thread.current[:request_id].nil? && tp.path.start_with?(@root_path) && !tp.path.include?('controller.rb')
end