Class: Puppet::ResourceApi::SimpleProvider

Inherits:
Object
  • Object
show all
Defined in:
lib/puppet/resource_api/simple_provider.rb

Overview

This class provides a default implementation for set(), when your resource does not benefit from batching. Instead of processing changes yourself, the ‘create`, `update`, and `delete` functions, are called for you, with proper logging already set up. Note that your type needs to use `name` as its namevar, and `ensure` in the conventional way to signal presence and absence of resources.

Class Method Summary collapse

Instance Method Summary collapse

Class Method Details

.create_absent(namevar, title) ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future. 



68
69
70
71
72
73
74
75
76
 
# File 'lib/puppet/resource_api/simple_provider.rb', line 68

def self.create_absent(namevar, title)
  result = if title.is_a? Hash
             title.dup
           else
             { namevar => title }
           end
  result[:ensure] = 'absent'
  result
end

Instance Method Details

#create(_context, _name, _should) ⇒ Object 



55
56
57
 
# File 'lib/puppet/resource_api/simple_provider.rb', line 55

def create(_context, _name, _should)
  raise "#{self.class} has not implemented `create`"
end

#delete(_context, _name) ⇒ Object 



63
64
65
 
# File 'lib/puppet/resource_api/simple_provider.rb', line 63

def delete(_context, _name)
  raise "#{self.class} has not implemented `delete`"
end

#set(context, changes) ⇒ Object 



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
 
# File 'lib/puppet/resource_api/simple_provider.rb', line 12

def set(context, changes)
  changes.each do |name, change|
    is = if context.type.feature?('simple_get_filter')
           change.key?(:is) ? change[:is] : (get(context, [name]) || []).find { |r| r[:name] == name }
         else
           change.key?(:is) ? change[:is] : (get(context) || []).find { |r| r[:name] == name }
         end
    context.type.check_schema(is) unless change.key?(:is)

    should = change[:should]

    raise 'SimpleProvider cannot be used with a Type that is not ensurable' unless context.type.ensurable?

    is = SimpleProvider.create_absent(:name, name) if is.nil?
    should = SimpleProvider.create_absent(:name, name) if should.nil?

    name_hash = if context.type.namevars.length > 1
                  # pass a name_hash containing the values of all namevars
                  name_hash = {}
                  context.type.namevars.each do |namevar|
                    name_hash[namevar] = change[:should][namevar]
                  end
                  name_hash
                else
                  name
                end

    if is[:ensure].to_s == 'absent' && should[:ensure].to_s == 'present'
      context.creating(name) do
        create(context, name_hash, should)
      end
    elsif is[:ensure].to_s == 'present' && should[:ensure].to_s == 'absent'
      context.deleting(name) do
        delete(context, name_hash)
      end
    elsif is[:ensure].to_s == 'present'
      context.updating(name) do
        update(context, name_hash, should)
      end
    end
  end
end

#update(_context, _name, _should) ⇒ Object 



59
60
61
 
# File 'lib/puppet/resource_api/simple_provider.rb', line 59

def update(_context, _name, _should)
  raise "#{self.class} has not implemented `update`"
end