class Facter::Resolvers::Macosx::SystemMemory

Private Class Methods

calculate_system_memory(fact_name) click to toggle source
# File lib/facter/resolvers/macosx/system_memory_resolver.rb, line 14
def calculate_system_memory(fact_name)
  read_total_memory_in_bytes
  read_available_memory_in_bytes

  @fact_list[:used_bytes] = @fact_list[:total_bytes] - @fact_list[:available_bytes]
  @fact_list[:capacity] = compute_capacity(@fact_list[:used_bytes], @fact_list[:total_bytes])

  @fact_list[fact_name]
end
compute_capacity(used, total) click to toggle source
# File lib/facter/resolvers/macosx/system_memory_resolver.rb, line 36
def compute_capacity(used, total)
  "#{format('%<value>.2f', value: (used / total.to_f * 100))}%"
end
post_resolve(fact_name) click to toggle source
# File lib/facter/resolvers/macosx/system_memory_resolver.rb, line 10
def post_resolve(fact_name)
  @fact_list.fetch(fact_name) { calculate_system_memory(fact_name) }
end
read_available_memory_in_bytes() click to toggle source
# File lib/facter/resolvers/macosx/system_memory_resolver.rb, line 24
def read_available_memory_in_bytes
  output = Facter::Core::Execution.execute('vm_stat', logger: log)
  page_size = output.match(/page size of (\d+) bytes/)[1].to_i
  pages_free = output.match(/Pages free:\s+(\d+)/)[1].to_i

  @fact_list[:available_bytes] = page_size * pages_free
end
read_total_memory_in_bytes() click to toggle source
# File lib/facter/resolvers/macosx/system_memory_resolver.rb, line 32
def read_total_memory_in_bytes
  @fact_list[:total_bytes] = Facter::Core::Execution.execute('sysctl -n hw.memsize', logger: log).to_i
end