Module DMI
In: lib/ohai/plugins/dmi_common.rb
DMI dot/f_31.png
Author:Kurt Yoder (ktyopscode@yoderhome.com)
Copyright:Copyright (c) 2010 Kurt Yoder
License:Apache License, Version 2.0

Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at

    http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.

Methods

Constants

IdToDescription = { 0 => 'bios', 1 => 'system', 2 => 'base_board', 3 => 'chassis', 4 => 'processor', 5 => 'memory_controller', 6 => 'memory_module', 7 => 'cache', 8 => 'port_connector', 9 => 'system_slots', 10 => 'on_board_devices', 11 => 'oem_strings', 12 => 'system_configuration_options', 13 => 'bios_language', 14 => 'group_associations', 15 => 'system_event_log', 16 => 'physical_memory_array', 17 => 'memory_device', 18 => '32_bit_memory_error', 19 => 'memory_array_mapped_address', 20 => 'memory_device_mapped_address', 21 => 'built_in_pointing_device', 22 => 'portable_battery', 23 => 'system_reset', 24 => 'hardware_security', 25 => 'system_power_controls', 26 => 'voltage_probe', 27 => 'cooling_device', 28 => 'temperature_probe', 29 => 'electrical_current_probe', 30 => 'out_of_band_remote_access', 31 => 'boot_integrity_services', 32 => 'system_boot', 33 => '64_bit_memory_error', 34 => 'management_device', 35 => 'management_device_component', 36 => 'management_device_threshold_data', 37 => 'memory_channel', 38 => 'ipmi_device', 39 => 'power_supply', 126 => 'disabled_entries', 127 => 'end_of_table_marker', }   List of IDs and what they translate to from ‘man 8 dmidecode’ all-lowercase, all non-alphanumeric converted to ‘_’ 128-255 are ‘oem_data_[id]’ Everything else is ‘unknown‘
IdToCapture = [ 0, 1, 2, 3, 4, 6, 11 ]   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.

Public Class methods

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

[Source]

     # File lib/ohai/plugins/dmi_common.rb, line 95
 95:   def DMI.convenience_keys(dmi)
 96:     dmi.each{ |type, records|
 97:       in_common = Mash.new
 98:       next unless records.class.to_s == 'Mash'
 99:       next unless records.has_key?('all_records')
100:       records[:all_records].each{ |record| 
101:         record.each{ |field, value| 
102:           next if value.class.to_s == 'Mash'
103:           next if field.to_s == 'application_identifier'
104:           next if field.to_s == 'size'
105:           next if field.to_s == 'record_id'
106:           translated = field.downcase.gsub(/[^a-z0-9]/, '_')
107:           if in_common.has_key?(translated)
108:             in_common[translated] = nil unless in_common[translated] == value
109:           else
110:             in_common[translated] = value
111:           end
112:         }
113:       }
114:       in_common.each{ |field, value|
115:         next if value == nil
116:         dmi[type][field] = value
117:       }
118:     }
119:   end

look up DMI ID

[Source]

    # File lib/ohai/plugins/dmi_common.rb, line 75
75:   def DMI.id_lookup(id)
76:     begin
77:       id = id.to_i
78:       if (id >= 128) and (id <= 255)
79:         id = "oem_data_#{id}"
80:       elsif DMI::IdToDescription.has_key?(id)
81:         id = DMI::IdToDescription[id]
82:       else
83:         Ohai::Log.debug("unrecognized header id; falling back to 'unknown'")
84:         id = 'unknown'
85:       end
86:     rescue
87:       Ohai::Log.debug("failed to look up id #{id}, returning unchanged")
88:       id
89:     end
90:   end

[Validate]