Class: MetriksAddons::CloudWatchReporter

Inherits:
BaseReporter show all
Defined in:
lib/metriks-addons/cloudwatch_reporter.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Methods inherited from BaseReporter

#flush, #log, #restart, #start, #stop

Constructor Details

#initialize(access_key, secret_key, namespace, tags, options = {}) ⇒ CloudWatchReporter

Returns a new instance of CloudWatchReporter.



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# File 'lib/metriks-addons/cloudwatch_reporter.rb', line 26

def initialize(access_key, secret_key, namespace, tags, options = {})
  super(options)
  @cw = AWS::CloudWatch.new(:access_key_id => access_key, :secret_access_key => secret_key)
  @namespace = namespace
  @dimensions = get_dimensions(tags)

  @prefix = options[:prefix]
  @source = options[:source]

  @batch_size   = options[:batch_size] || 50
end

Instance Attribute Details

#cw ⇒ Object

Returns the value of attribute cw.



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# File 'lib/metriks-addons/cloudwatch_reporter.rb', line 24

def cw
  @cw
end

#logger ⇒ Object

Returns the value of attribute logger.



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# File 'lib/metriks-addons/cloudwatch_reporter.rb', line 24

def logger
  @logger
end

#prefix ⇒ Object

Returns the value of attribute prefix.



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# File 'lib/metriks-addons/cloudwatch_reporter.rb', line 24

def prefix
  @prefix
end

#source ⇒ Object

Returns the value of attribute source.



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# File 'lib/metriks-addons/cloudwatch_reporter.rb', line 24

def source
  @source
end

#tags ⇒ Object

Returns the value of attribute tags.



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# File 'lib/metriks-addons/cloudwatch_reporter.rb', line 24

def tags
  @tags
end

Instance Method Details

#create_datapoints(base_name, metric, time, keys, keys_unit, snapshot_keys = [], snapshot_keys_unit = []) ⇒ Object 



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# File 'lib/metriks-addons/cloudwatch_reporter.rb', line 103

def create_datapoints(base_name, metric, time, keys, keys_unit, snapshot_keys = [], snapshot_keys_unit = [])
  datapoints = []

  keys.flatten.zip(keys_unit.flatten).each do |key, key_unit|
    name = key.to_s.gsub(/^get_/, '')
    datapoints << {
      :metric_name => "#{base_name}.#{name}",
      :timestamp => time,
      :value => metric.send(key),
      :dimensions => @dimensions,
      :unit => key_unit
    }
  end

  unless snapshot_keys.empty?
    snapshot = metric.snapshot
    snapshot_keys.flatten.zip(snapshot_keys_unit.flatten).each do |key, key_unit|
      name = key.to_s.gsub(/^get_/, '')
      datapoints << {
        :metric_name => "#{base_name}.#{name}",
        :timestamp => time,
        :value => snapshot.send(key),
        :dimensions => @dimensions,
        :unit => key_unit
      }
    end
  end
  datapoints
end

#get_datapoints ⇒ Object 



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# File 'lib/metriks-addons/cloudwatch_reporter.rb', line 46

def get_datapoints
  time = Time.at(@time_tracker.now_floored).iso8601

  datapoints = []
  @registry.each do |name, metric|
    next if name.nil? || name.empty?
    name = name.to_s.gsub(/ +/, '_')
    if @prefix
      name = "#{@prefix}.#{name}"
    end

    case metric
    when Metriks::Meter
      datapoints |= create_datapoints name, metric, time, [
        :count, :mean_rate
      ], [
        'Count', 'Count/Second'
      ]
    when Metriks::Counter
      datapoints |= create_datapoints name, metric, time, [
        :count
      ], [
        'Count'
      ]
    when Metriks::Gauge
      datapoints |= create_datapoints name, metric, time, [
        :value
      ], [
        'Count'
      ]
    when Metriks::Timer
      datapoints |= create_datapoints name, metric, time, [
        :count, :mean_rate, :min, :max, :mean, :stddev
      ], [
        'Count', 'Count/Second', 'Seconds', 'Seconds',
        'Seconds', 'Seconds'
      ], [
        :median
      ], [
        'Seconds'
      ]
    when Metriks::Histogram
      datapoints |= create_datapoints name, metric, time, [
        :count, :min, :max, :mean, :stddev
      ], [
        'Count', 'Count', 'Count', 'Count',
        'Count'
      ], [
        :median
      ], [
        'Count'
      ]
    end
  end
  datapoints
end

#get_dimensions(tags) ⇒ Object 



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# File 'lib/metriks-addons/cloudwatch_reporter.rb', line 133

def get_dimensions(tags)
  dimensions =[]
  tags.each do |name, value|
    dimensions << {
      :name => "#{name}",
      :value => value
    }
  end
  dimensions
end

#submit(datapoints) ⇒ Object 



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# File 'lib/metriks-addons/cloudwatch_reporter.rb', line 38

def submit(datapoints)
  return if datapoints.empty?
  datapoints.each do |datapoint|
    response = @cw.put_metric_data({:namespace => @namespace, :metric_data => [datapoint]})
  end
  log "info", "Sent #{datapoints.size} metrics to CloudWatch"
end