Class: SnowmanIO::Spider::Mps

Inherits:
Object
  • Object
show all
Defined in:
lib/snowman-io/spider/mps.rb

Overview

Metrics per second

Instance Method Summary collapse

Instance Method Details

#grab ⇒ Object 



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# File 'lib/snowman-io/spider/mps.rb', line 5

def grab
  # work with raw datapoints for simplicity
  key = Utils.floor_5min(Time.now)
  value = Aggregation.where(precision: "5min", at: key).map(&:count).sum/300.0
  prev_value = Aggregation.where(precision: "5min", at: key - 5.minutes).map(&:count).sum/300.0
  name = "Metrics Per Second"

  app = App.where(system: true).first
  metric = app.metrics.where(name: name, kind: "amount").first_or_create!
  metric.update_attributes!(last_value: value, last_value_updated_at: Time.now)
  point = metric.data_points.where(at: key).first_or_create!
  point.update_attributes!(value: value)
  prev_point = metric.data_points.where(at: key - 5.minutes).first_or_create!
  prev_point.update_attributes!(value: prev_value)
  app.touch
end