Module: StatsD::Instrument::StrictMetaprogramming

Included in:
StatsD::Instrument
Defined in:
lib/statsd/instrument/strict.rb

Instance Method Summary collapse

Instance Method Details

#statsd_count(method, name, sample_rate: nil, tags: nil, no_prefix: false) ⇒ Object 



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# File 'lib/statsd/instrument/strict.rb', line 204

def statsd_count(method, name, sample_rate: nil, tags: nil, no_prefix: false)
  check_method_and_metric_name(method, name)

  # Unfortunately, we have to inline the new method implementation ebcause we have to fix the
  # Stats.increment call to not use the `prefix` argument.

  add_to_method(method, name, :count) do
    define_method(method) do |*args, &block|
      key = StatsD::Instrument.generate_metric_name(name, self, *args)
      StatsD.increment(key, sample_rate: sample_rate, tags: tags, no_prefix: no_prefix)
      super(*args, &block)
    end
  end
end

#statsd_count_if(method, name, sample_rate: nil, tags: nil, no_prefix: false) ⇒ Object 



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# File 'lib/statsd/instrument/strict.rb', line 172

def statsd_count_if(method, name, sample_rate: nil, tags: nil, no_prefix: false)
  check_method_and_metric_name(method, name)

  # Unfortunately, we have to inline the new method implementation ebcause we have to fix the
  # Stats.increment call to not use the `prefix` argument.

  add_to_method(method, name, :count_if) do
    define_method(method) do |*args, &block|
      begin
        truthiness = result = super(*args, &block)
      rescue
        truthiness = false
        raise
      else
        if block_given?
          begin
            truthiness = yield(result)
          rescue
            truthiness = false
          end
        end
        result
      ensure
        if truthiness
          key = StatsD::Instrument.generate_metric_name(name, self, *args)
          StatsD.increment(key, sample_rate: sample_rate, tags: tags, no_prefix: no_prefix)
        end
      end
    end
  end
end

#statsd_count_success(method, name, sample_rate: nil, tags: nil, no_prefix: false) ⇒ Object 



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# File 'lib/statsd/instrument/strict.rb', line 141

def statsd_count_success(method, name, sample_rate: nil, tags: nil, no_prefix: false)
  check_method_and_metric_name(method, name)

  # Unfortunately, we have to inline the new method implementation ebcause we have to fix the
  # Stats.increment call to not use the `prefix` argument.

  add_to_method(method, name, :count_success) do
    define_method(method) do |*args, &block|
      begin
        truthiness = result = super(*args, &block)
      rescue
        truthiness = false
        raise
      else
        if block_given?
          begin
            truthiness = yield(result)
          rescue
            truthiness = false
          end
        end
        result
      ensure
        suffix = truthiness == false ? 'failure' : 'success'
        key = "#{StatsD::Instrument.generate_metric_name(name, self, *args)}.#{suffix}"
        StatsD.increment(key, sample_rate: sample_rate, tags: tags, no_prefix: no_prefix)
      end
    end
  end
end

#statsd_distribution(method, name, sample_rate: nil, tags: nil, no_prefix: false) ⇒ Object 



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# File 'lib/statsd/instrument/strict.rb', line 125

def statsd_distribution(method, name, sample_rate: nil, tags: nil, no_prefix: false)
  check_method_and_metric_name(method, name)

  # Unfortunately, we have to inline the new method implementation ebcause we have to fix the
  # Stats.distribution call to not use the `prefix` argument.

  add_to_method(method, name, :distribution) do
    define_method(method) do |*args, &block|
      key = StatsD::Instrument.generate_metric_name(name, self, *args)
      StatsD.distribution(key, sample_rate: sample_rate, tags: tags, no_prefix: no_prefix) do
        super(*args, &block)
      end
    end
  end
end

#statsd_measure(method, name, sample_rate: nil, tags: nil, no_prefix: false) ⇒ Object 



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# File 'lib/statsd/instrument/strict.rb', line 110

def statsd_measure(method, name, sample_rate: nil, tags: nil, no_prefix: false)
  check_method_and_metric_name(method, name)

  # Unfortunately, we have to inline the new method implementation ebcause we have to fix the
  # Stats.measure call to not use the `as_dist` and `prefix` arguments.
  add_to_method(method, name, :measure) do
    define_method(method) do |*args, &block|
      key = StatsD::Instrument.generate_metric_name(name, self, *args)
      StatsD.measure(key, sample_rate: sample_rate, tags: tags, no_prefix: no_prefix) do
        super(*args, &block)
      end
    end
  end
end