1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
|
#
# Author:: Adam Jacob (<adam@opscode.com>)
# Copyright:: Copyright (c) 2008 Opscode, Inc.
# 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.
#
require 'rubygems'
require 'extlib'
require 'ohai/log'
require 'ohai/mixin/from_file'
require 'ohai/mixin/command'
require 'ohai/mixin/string'
require 'json'
module Ohai
class System
attr_accessor :data, :seen_plugins
include Ohai::Mixin::FromFile
include Ohai::Mixin::Command
def initialize
@data = Mash.new
@seen_plugins = Hash.new
end
def [](key)
@data[key]
end
def []=(key, value)
@data[key] = value
end
def each(&block)
@data.each do |key, value|
block.call(key, value)
end
end
def attribute?(name)
@data.has_key?(name)
end
def set(name, *value)
set_attribute(name, *value)
end
def from(cmd)
status, stdout, stderr = run_command(:command => cmd)
stdout.chomp!
end
# Set the value equal to the stdout of the command, plus run through a regex - the first piece of match data is the value.
def from_with_regex(cmd, *regex_list)
regex_list.flatten.each do |regex|
status, stdout, stderr = run_command(:command => cmd)
stdout.chomp!
md = stdout.match(regex)
return md[1]
end
end
def set_attribute(name, *value)
@data[name] = *value
@data[name]
end
def get_attribute(name)
@data[name]
end
def all_plugins
require_plugin('os')
Ohai::Config[:plugin_path].each do |path|
[
Dir[File.join(path, '*')],
Dir[File.join(path, @data[:os], '**', '*')]
].flatten.each do |file|
file_regex = Regexp.new("#{path}#{File::SEPARATOR}(.+).rb$")
md = file_regex.match(file)
if md
plugin_name = md[1].gsub(File::SEPARATOR, "::")
require_plugin(plugin_name) unless @seen_plugins.has_key?(plugin_name)
end
end
end
end
def require_plugin(plugin_name, force=false)
unless force
return true if @seen_plugins[plugin_name]
end
filename = "#{plugin_name.gsub("::", File::SEPARATOR)}.rb"
Ohai::Config[:plugin_path].each do |path|
check_path = File.expand_path(File.join(path, filename))
begin
@seen_plugins[plugin_name] = true
Ohai::Log.debug("Loading plugin #{plugin_name}")
from_file(check_path)
return true
rescue IOError => e
Ohai::Log.debug("No #{plugin_name} at #{check_path}")
rescue Exception,Errno::ENOENT => e
Ohai::Log.debug("Plugin #{plugin_name} threw exception #{e.inspect}")
end
end
end
# Sneaky! Lets us stub out require_plugin when testing plugins, but still
# call the real require_plugin to kick the whole thing off.
alias :_require_plugin :require_plugin
# Serialize this object as a hash
def to_json(*a)
output = @data.clone
output["json_class"] = self.class.name
output.to_json(*a)
end
# Pretty Print this object as JSON
def json_pretty_print
JSON.pretty_generate(@data)
end
# Create an Ohai::System from JSON
def self.json_create(o)
ohai = new
o.each do |key, value|
ohai.data[key] = value unless key == "json_class"
end
ohai
end
def method_missing(name, *args)
return get_attribute(name) if args.length == 0
set_attribute(name, *args)
end
private
def load_plugin_file
end
end
end
|
