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
162
163
164
165
166
167
168
169
|
#
# Author:: Doug MacEachern (<dougm@vmware.com>)
# Copyright:: Copyright 2010-2016, VMware, 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 "chef/provider"
require "chef/mixin/command"
require "chef/resource/env"
class Chef
class Provider
class Env < Chef::Provider
include Chef::Mixin::Command
attr_accessor :key_exists
provides :env, os: "!windows"
def initialize(new_resource, run_context)
super
@key_exists = true
end
def load_current_resource
@current_resource = Chef::Resource::Env.new(@new_resource.name)
@current_resource.key_name(@new_resource.key_name)
if env_key_exists(@new_resource.key_name)
@current_resource.value(env_value(@new_resource.key_name))
else
@key_exists = false
Chef::Log.debug("#{@new_resource} key does not exist")
end
@current_resource
end
def env_value(key_name)
raise Chef::Exceptions::Env, "#{self} provider does not implement env_value!"
end
def env_key_exists(key_name)
env_value(key_name) ? true : false
end
# Check to see if value needs any changes
#
# ==== Returns
# <true>:: If a change is required
# <false>:: If a change is not required
def requires_modify_or_create?
if @new_resource.delim
#e.g. check for existing value within PATH
new_values.inject(0) do |index, val|
next_index = current_values.find_index val
return true if next_index.nil? || next_index < index
next_index
end
false
else
@new_resource.value != @current_resource.value
end
end
alias_method :compare_value, :requires_modify_or_create?
def action_create
if @key_exists
if requires_modify_or_create?
modify_env
Chef::Log.info("#{@new_resource} altered")
@new_resource.updated_by_last_action(true)
end
else
create_env
Chef::Log.info("#{@new_resource} created")
@new_resource.updated_by_last_action(true)
end
end
#e.g. delete a PATH element
#
# ==== Returns
# <true>:: If we handled the element case and caller should not delete the key
# <false>:: Caller should delete the key, either no :delim was specific or value was empty
# after we removed the element.
def delete_element
return false unless @new_resource.delim #no delim: delete the key
needs_delete = new_values.any? { |v| current_values.include?(v) }
if !needs_delete
Chef::Log.debug("#{@new_resource} element '#{@new_resource.value}' does not exist")
return true #do not delete the key
else
new_value =
current_values.select do |item|
not new_values.include?(item)
end.join(@new_resource.delim)
if new_value.empty?
return false #nothing left here, delete the key
else
old_value = @new_resource.value(new_value)
create_env
Chef::Log.debug("#{@new_resource} deleted #{old_value} element")
@new_resource.updated_by_last_action(true)
return true #we removed the element and updated; do not delete the key
end
end
end
def action_delete
if @key_exists && !delete_element
delete_env
Chef::Log.info("#{@new_resource} deleted")
@new_resource.updated_by_last_action(true)
end
end
def action_modify
if @key_exists
if requires_modify_or_create?
modify_env
Chef::Log.info("#{@new_resource} modified")
@new_resource.updated_by_last_action(true)
end
else
raise Chef::Exceptions::Env, "Cannot modify #{@new_resource} - key does not exist!"
end
end
def create_env
raise Chef::Exceptions::UnsupportedAction, "#{self} does not support :#{@new_resource.action}"
end
def delete_env
raise Chef::Exceptions::UnsupportedAction, "#{self} does not support :delete"
end
def modify_env
if @new_resource.delim
@new_resource.value((new_values + current_values).uniq.join(@new_resource.delim))
end
create_env
end
# Returns the current values to split by delimiter
def current_values
@current_values ||= @current_resource.value.split(@new_resource.delim)
end
# Returns the new values to split by delimiter
def new_values
@new_values ||= @new_resource.value.split(@new_resource.delim)
end
end
end
end
|
