Class: Gitlab::Metrics::MethodCall

Inherits:
Object
  • Object
show all
Defined in:
lib/gitlab/metrics/method_call.rb

Overview

Class for tracking timing information about method calls

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(name, module_name, method_name, transaction) ⇒ MethodCall

name - The full name of the method (including namespace) such as

`User#sign_in`.

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# File 'lib/gitlab/metrics/method_call.rb', line 12

def initialize(name, module_name, method_name, transaction)
  @module_name = module_name
  @method_name = method_name
  @transaction = transaction
  @name = name
  @labels = { module: @module_name, method: @method_name }
  @real_time = 0.0
  @cpu_time = 0.0
  @call_count = 0
end

Instance Attribute Details

#call_countObject (readonly)

Returns the value of attribute call_count


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# File 'lib/gitlab/metrics/method_call.rb', line 7

def call_count
  @call_count
end

#cpu_timeObject (readonly)

Returns the value of attribute cpu_time


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# File 'lib/gitlab/metrics/method_call.rb', line 7

def cpu_time
  @cpu_time
end

#real_timeObject (readonly)

Returns the value of attribute real_time


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# File 'lib/gitlab/metrics/method_call.rb', line 7

def real_time
  @real_time
end

Instance Method Details

#above_threshold?Boolean

Returns true if the total runtime of this method exceeds the method call threshold.

Returns:

  • (Boolean)

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# File 'lib/gitlab/metrics/method_call.rb', line 51

def above_threshold?
  real_time.in_milliseconds >= ::Gitlab::Metrics.method_call_threshold
end

#measureObject

Measures the real and CPU execution time of the supplied block.


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# File 'lib/gitlab/metrics/method_call.rb', line 24

def measure
  start_real = System.monotonic_time
  start_cpu = System.cpu_time
  retval = yield

  real_time = System.monotonic_time - start_real
  cpu_time = System.cpu_time - start_cpu

  @real_time += real_time
  @cpu_time += cpu_time
  @call_count += 1

  if above_threshold? && transaction
    label_keys = labels.keys
    transaction.observe(:gitlab_method_call_duration_seconds, real_time, labels) do
      docstring 'Method calls real duration'
      label_keys label_keys
      buckets [0.01, 0.05, 0.1, 0.5, 1]
      with_feature :prometheus_metrics_method_instrumentation
    end
  end

  retval
end