Class: EZmetrics

Inherits:
Object
  • Object
show all
Defined in:
lib/ezmetrics.rb

Defined Under Namespace

Classes: Benchmark

Constant Summary collapse

METRICS = 
[:duration, :views, :db, :queries].freeze
AGGREGATION_FUNCTIONS = 
[:max, :avg].freeze
PARTITION_UNITS = 
[:second, :minute, :hour, :day].freeze

Instance Method Summary collapse

Constructor Details

#initialize(interval_seconds = 60) ⇒ EZmetrics

Returns a new instance of EZmetrics.



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# File 'lib/ezmetrics.rb', line 10

def initialize(interval_seconds=60)
  @interval_seconds = interval_seconds.to_i
  @redis            = Redis.new(driver: :hiredis)
  @schema           = redis_schema
end

Instance Method Details

#flatten ⇒ Object 



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# File 'lib/ezmetrics.rb', line 84

def flatten
  @flat = true
  self
end

#log(payload = {duration: 0.0, views: 0.0, db: 0.0, queries: 0, status: 200, store_each_value: false}) ⇒ Object 



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# File 'lib/ezmetrics.rb', line 16

def log(payload={duration: 0.0, views: 0.0, db: 0.0, queries: 0, status: 200, store_each_value: false})
  @safe_payload = {
    duration:         payload[:duration].to_f,
    views:            payload[:views].to_f,
    db:               payload[:db].to_f,
    queries:          payload[:queries].to_i,
    status:           payload[:status].to_i,
    store_each_value: payload[:store_each_value].to_s == "true"
  }

  this_second          = Time.now.to_i
  status_group         = "#{payload[:status].to_s[0]}xx"
  @this_second_metrics = redis.get(this_second)

  if this_second_metrics
    @this_second_metrics = Oj.load(this_second_metrics)

    METRICS.each do |metrics_type|
      update_sum(metrics_type)
      update_max(metrics_type)
      store_value(metrics_type) if safe_payload[:store_each_value]
    end

    this_second_metrics[schema["all"]]        += 1
    this_second_metrics[schema[status_group]] += 1
  else
    @this_second_metrics = {
      "second"       => this_second,
      "duration_sum" => safe_payload[:duration],
      "duration_max" => safe_payload[:duration],
      "views_sum"    => safe_payload[:views],
      "views_max"    => safe_payload[:views],
      "db_sum"       => safe_payload[:db],
      "db_max"       => safe_payload[:db],
      "queries_sum"  => safe_payload[:queries],
      "queries_max"  => safe_payload[:queries],
      "2xx"          => 0,
      "3xx"          => 0,
      "4xx"          => 0,
      "5xx"          => 0,
      "all"          => 1
    }

    if safe_payload[:store_each_value]
      this_second_metrics.merge!(
        "duration_values" => [safe_payload[:duration]],
        "views_values"    => [safe_payload[:views]],
        "db_values"       => [safe_payload[:db]],
        "queries_values"  => [safe_payload[:queries]]
      )
    end

    this_second_metrics[status_group] = 1

    @this_second_metrics = this_second_metrics.values
  end

  redis.setex(this_second, interval_seconds, Oj.dump(this_second_metrics))
  true
rescue => error
  formatted_error(error)
end

#partition_by(time_unit = :minute) ⇒ Object 



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# File 'lib/ezmetrics.rb', line 89

def partition_by(time_unit=:minute)
  time_unit = PARTITION_UNITS.include?(time_unit) ? time_unit : :minute
  @partitioned_metrics = interval_metrics.group_by { |array| second_to_partition_unit(time_unit, array[schema["second"]]) }
  self
end

#show(options = nil) ⇒ Object 



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# File 'lib/ezmetrics.rb', line 79

def show(options=nil)
  @options = options || default_options
  partitioned_metrics ? aggregate_partitioned_data : aggregate_data
end