Class: LoadAverage

Inherits:
Object
  • Object
show all
Defined in:
lib/sensu-plugins-load-checks/load-average.rb

Instance Method Summary collapse

Constructor Details

#initialize ⇒ LoadAverage

Returns a new instance of LoadAverage.



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# File 'lib/sensu-plugins-load-checks/load-average.rb', line 2

def initialize
  @cores = cpu_count
  @avg = load_avg
end

Instance Method Details

#cpu_count ⇒ Object 



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# File 'lib/sensu-plugins-load-checks/load-average.rb', line 17

def cpu_count
  if File.exist?('/proc/cpuinfo')
    File.read('/proc/cpuinfo').scan(/^processor/).count
  else
    `sysctl -n hw.ncpu`.to_i
  end
rescue StandardError
  0
end

#exceed?(thresholds) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/sensu-plugins-load-checks/load-average.rb', line 31

def exceed?(thresholds)
  @avg.zip(thresholds).any? { |a, t| a >= t }
end

#failed? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/sensu-plugins-load-checks/load-average.rb', line 27

def failed?
  @avg.nil? || @cores.zero?
end

#load_avg ⇒ Object 



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# File 'lib/sensu-plugins-load-checks/load-average.rb', line 7

def load_avg
  if File.exist?('/proc/loadavg')
    # linux
    File.read('/proc/loadavg').split.take(3).map { |a| (a.to_f / @cores).round(2) } rescue nil # rubocop:disable RescueModifier
  else
    # fallback for FreeBSD
    `uptime`.split(' ')[-3..-1].map(&:to_f).map { |a| (a.to_f / @cores).round(2) } rescue nil # rubocop:disable RescueModifier
  end
end

#to_s ⇒ Object 



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# File 'lib/sensu-plugins-load-checks/load-average.rb', line 35

def to_s
  @avg.join(', ')
end

#total ⇒ Object 



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# File 'lib/sensu-plugins-load-checks/load-average.rb', line 39

def total
  @avg.map { |a| (a / @cores) }.join(', ')
end