Method: OneApm::Agent::Datastore.trace

Defined in:
lib/one_apm/agent/datastore.rb

.trace(clazz, method_name, product, operation = method_name) ⇒ Object



17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
# File 'lib/one_apm/agent/datastore.rb', line 17

def self.trace(clazz, method_name, product, operation = method_name)
  clazz.class_eval do
    method_name_without_oneapm = "#{method_name}_without_oneapm"

    if OneApm::Helper.instance_methods_include?(clazz, method_name) &&
       !OneApm::Helper.instance_methods_include?(clazz, method_name_without_oneapm)

      visibility = OneApm::Helper.instance_method_visibility(clazz, method_name)

      alias_method method_name_without_oneapm, method_name

      define_method(method_name) do |*args, &blk|
        metrics = MetricHelper.metrics_for(product, operation)
        OneApm::Support::MethodTracer.trace_execution_scoped(metrics) do
          send(method_name_without_oneapm, *args, &blk)
        end
      end

      send visibility, method_name
      send visibility, method_name_without_oneapm
    end
  end
end