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Contents
# frozen_string_literal: true
module Facter
module Resolvers
class Memory < BaseResolver
@log = Facter::Log.new(self)
@semaphore = Mutex.new
@fact_list ||= {}
class << self
private
def post_resolve(fact_name)
@fact_list.fetch(fact_name) { validate_info(fact_name) }
end
def read_performance_information
require "#{ROOT_DIR}/lib/resolvers/windows/ffi/memory_ffi"
state_ptr = FFI::MemoryPointer.new(PerformanceInformation.size)
if MemoryFFI::GetPerformanceInfo(state_ptr, state_ptr.size) == FFI::WIN32FALSE
@log.debug 'Resolving memory facts failed'
return
end
PerformanceInformation.new(state_ptr)
end
def calculate_memory
state = read_performance_information
return unless state
total_bytes = state[:PhysicalTotal] * state[:PageSize]
available_bytes = state[:PhysicalAvailable] * state[:PageSize]
if total_bytes.zero? || available_bytes.zero?
@log.debug 'Available or Total bytes are zero could not proceed further'
return
end
{ total_bytes: total_bytes, available_bytes: available_bytes, used_bytes: total_bytes - available_bytes }
end
def validate_info(fact_name)
result = calculate_memory
return unless result
build_facts_list(result)
@fact_list[fact_name]
end
def build_facts_list(result)
@fact_list[:total_bytes] = result[:total_bytes]
@fact_list[:available_bytes] = result[:available_bytes]
@fact_list[:used_bytes] = result[:used_bytes]
@fact_list[:capacity] = format('%<capacity>.2f',
capacity: (result[:used_bytes] / result[:total_bytes].to_f * 100)) + '%'
end
end
end
end
end
Version data entries
21 entries across 21 versions & 1 rubygems