Class: RequestQueueTime::AutoScalingMetrics::Reporter

Inherits:
Object
  • Object
show all
Includes:
Singleton
Defined in:
lib/services/auto_scaling_metrics/reporter.rb

Constant Summary collapse

DIMENSIONS = 
[
  {name: "service", value: ENV["DD_SERVICE"]},
  {name: "environment", value: ENV["DD_ENV"]}
]

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Instance Attribute Details

#collector ⇒ Object

Returns the value of attribute collector.



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# File 'lib/services/auto_scaling_metrics/reporter.rb', line 19

def collector
  @collector
end

Class Method Details

.add_metric(metric) ⇒ Object 



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# File 'lib/services/auto_scaling_metrics/reporter.rb', line 60

def self.add_metric(metric)
  instance.add_metric(metric)
end

.start ⇒ Object 



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# File 'lib/services/auto_scaling_metrics/reporter.rb', line 21

def self.start(&)
  return false if instance.started?

  instance.start!(&)
end

.stop ⇒ Object 



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# File 'lib/services/auto_scaling_metrics/reporter.rb', line 27

def self.stop
  return unless instance.started?
  instance.stop!
end

Instance Method Details

#add_metric(metric) ⇒ Object 



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# File 'lib/services/auto_scaling_metrics/reporter.rb', line 64

def add_metric(metric)
  metric[:dimensions] = (metric[:dimensions] || []) + DIMENSIONS
  @buffer << metric
end

#start! {|_self| ... } ⇒ Object

Yields:

  • (_self)

Yield Parameters:



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# File 'lib/services/auto_scaling_metrics/reporter.rb', line 32

def start!(&block)
  Rails.logger.info "Starting AutoScalingMetrics::Reporter"
  @interval = 30
  @buffer = Queue.new
  @buffer_size_limit = 1000
  @cloudwatch = Aws::CloudWatch::Client.new
  @last_flush_time = Time.now
  @pid = Process.pid

  yield self if block

  start_flush_thread
end

#started? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/services/auto_scaling_metrics/reporter.rb', line 46

def started?
  @pid == Process.pid
end

#stop! ⇒ Object 



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# File 'lib/services/auto_scaling_metrics/reporter.rb', line 50

def stop!
  @_thread&.terminate
  @_thread = nil
  @pid = nil
end

#track_request_queue_time(time) ⇒ Object 



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# File 'lib/services/auto_scaling_metrics/reporter.rb', line 56

def track_request_queue_time(time)
  add_metric(metric_name: "request_queue_time", value: time, unit: "Milliseconds", timestamp: Time.now)
end