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Contents
# frozen_string_literal: true
module Facter
module Resolvers
module Linux
class Memory < BaseResolver
@semaphore = Mutex.new
@fact_list ||= {}
@log = Facter::Log.new(self)
class << self
private
def post_resolve(fact_name)
@fact_list.fetch(fact_name) { read_meminfo_file(fact_name) }
end
def read_meminfo_file(fact_name)
meminfo_output = Util::FileHelper.safe_read('/proc/meminfo', nil)
return unless meminfo_output
read_system(meminfo_output)
read_swap(meminfo_output)
@fact_list[fact_name]
end
def read_system(output)
@fact_list[:total] = kilobytes_to_bytes(output.match(/MemTotal:\s+(\d+)\s/)[1])
@fact_list[:memfree] = kilobytes_to_bytes(output.match(/MemFree:\s+(\d+)\s/)[1])
@fact_list[:used_bytes] = compute_used(@fact_list[:total], @fact_list[:memfree])
@fact_list[:capacity] = compute_capacity(@fact_list[:used_bytes], @fact_list[:total])
end
def read_swap(output)
total = output.match(/SwapTotal:\s+(\d+)\s/)[1]
return if total.to_i.zero?
@fact_list[:swap_total] = kilobytes_to_bytes(total)
@fact_list[:swap_free] = kilobytes_to_bytes(output.match(/SwapFree:\s+(\d+)\s/)[1])
@fact_list[:swap_used_bytes] = compute_used(@fact_list[:swap_total], @fact_list[:swap_free])
@fact_list[:swap_capacity] = compute_capacity(@fact_list[:swap_used_bytes], @fact_list[:swap_total])
end
def kilobytes_to_bytes(quantity)
quantity.to_i * 1024
end
def compute_capacity(used, total)
format('%<computed_capacity>.2f', computed_capacity: (used / total.to_f * 100)) + '%'
end
def compute_used(total, free)
total - free
end
end
end
end
end
end
Version data entries
19 entries across 19 versions & 1 rubygems