Class: Nephelae::MemUsage

Inherits:
Plugin
  • Object
show all
Defined in:
lib/nephelae/plugins/mem_usage.rb

Instance Attribute Summary

Attributes inherited from Plugin

#config

Instance Method Summary collapse

Methods inherited from Plugin

#initialize, #namespace

Constructor Details

This class inherits a constructor from Nephelae::Plugin

Instance Method Details

#get_metrics ⇒ Object 



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# File 'lib/nephelae/plugins/mem_usage.rb', line 5

def get_metrics
  metrics = Metrics.new(namespace)
  output = `#{command}`

  if $?.success?
    stats = parse_status(output)

    mem_total = stats[:mem_total]
    metrics.append_metric('MemoryTotal', mem_total, {unit: 'Kilobytes'})

    mem_free = stats[:mem_free] + stats[:buffers] + stats[:cached]
    metrics.append_metric('MemoryFree', mem_free, {unit: 'Kilobytes'})

    mem_used = stats[:mem_total] - mem_free
    metrics.append_metric('MemoryUsed', mem_used, {unit: 'Kilobytes'})

    unless mem_total == 0
      mem_used_percent = (mem_used.to_f / mem_total.to_f * 100).to_i
      metrics.append_metric('MemoryUsedPercentage', mem_used_percent, {unit: 'Percent'})
    end

    metrics.append_metric('SwapTotal', stats[:swap_total], {unit: 'Kilobytes'})
    metrics.append_metric('SwapFree', stats[:swap_free], {unit: 'Kilobytes'})
    swap_used = stats[:swap_total] - stats[:swap_free]

    metrics.append_metric('SwapUsed', swap_used, {unit: 'Kilobytes'})

    unless stats[:swap_total] == 0
      swap_used_percent = (swap_used.to_f / stats[:swap_total].to_f * 100).to_i
      metrics.append_metric('SwapUsedPercentage', swap_used_percent, {unit: 'Percent'})
    end
  end

  return metrics

end