module Ohai::Common::DMI

Constants

ID_TO_CAPTURE

list of IDs to collect, otherwise we generate pages of hashes about cache chip size and whatnot See OHAI-260. When we can give the user a choice, this will be a default.

ID_TO_DESCRIPTION

List of IDs and what they translate to from 'man 8 dmidecode' all-lowercase, all non-alphanumeric converted to '_' 128-255 are 'oem_data_' Everything else is 'unknown'

Public Class Methods

convenience_keys(dmi) click to toggle source

create simplified convenience access keys for each record type for single occurrences of one type, copy to top level all fields and values for multiple occurrences of same type, copy to top level all fields and values that are common to all records

# File lib/ohai/common/dmi.rb, line 98
def convenience_keys(dmi)
  dmi.each do |type, records|
    in_common = Mash.new
    next unless records.class.to_s == "Mash"
    next unless records.has_key?("all_records")
    records[:all_records].each do |record|
      record.each do |field, value|
        next if value.class.to_s == "Mash"
        next if field.to_s == "application_identifier"
        next if field.to_s == "size"
        next if field.to_s == "record_id"
        translated = field.downcase.gsub(/[^a-z0-9]/, "_")
        value      = value.strip
        if in_common.has_key?(translated)
          in_common[translated] = nil unless in_common[translated] == value
        else
          in_common[translated] = value
        end
      end
    end
    in_common.each do |field, value|
      next if value.nil?
      dmi[type][field] = value.strip
    end
  end
end
id_lookup(id) click to toggle source

look up DMI ID

# File lib/ohai/common/dmi.rb, line 80
def id_lookup(id)
  id = id.to_i
  if (id >= 128) && (id <= 255)
    id = "oem_data_#{id}"
  elsif DMI::ID_TO_DESCRIPTION.has_key?(id)
    id = DMI::ID_TO_DESCRIPTION[id]
  else
    Ohai::Log.debug("unrecognized header id; falling back to 'unknown'")
    id = "unknown"
  end
rescue
  Ohai::Log.debug("failed to look up id #{id}, returning unchanged")
  id
end

Private Instance Methods

convenience_keys(dmi) click to toggle source

create simplified convenience access keys for each record type for single occurrences of one type, copy to top level all fields and values for multiple occurrences of same type, copy to top level all fields and values that are common to all records

# File lib/ohai/common/dmi.rb, line 98
def convenience_keys(dmi)
  dmi.each do |type, records|
    in_common = Mash.new
    next unless records.class.to_s == "Mash"
    next unless records.has_key?("all_records")
    records[:all_records].each do |record|
      record.each do |field, value|
        next if value.class.to_s == "Mash"
        next if field.to_s == "application_identifier"
        next if field.to_s == "size"
        next if field.to_s == "record_id"
        translated = field.downcase.gsub(/[^a-z0-9]/, "_")
        value      = value.strip
        if in_common.has_key?(translated)
          in_common[translated] = nil unless in_common[translated] == value
        else
          in_common[translated] = value
        end
      end
    end
    in_common.each do |field, value|
      next if value.nil?
      dmi[type][field] = value.strip
    end
  end
end
id_lookup(id) click to toggle source

look up DMI ID

# File lib/ohai/common/dmi.rb, line 80
def id_lookup(id)
  id = id.to_i
  if (id >= 128) && (id <= 255)
    id = "oem_data_#{id}"
  elsif DMI::ID_TO_DESCRIPTION.has_key?(id)
    id = DMI::ID_TO_DESCRIPTION[id]
  else
    Ohai::Log.debug("unrecognized header id; falling back to 'unknown'")
    id = "unknown"
  end
rescue
  Ohai::Log.debug("failed to look up id #{id}, returning unchanged")
  id
end