Module: Puppet_X::Elastic::SortedHash

Defined in:
lib/puppet_x/elastic/hash.rb

Overview

Utility extension for consistent to_yaml behavior.

Class Method Summary collapse

Instance Method Summary collapse

Class Method Details

.extended(base) ⇒ Object

Upon extension, modify the hash appropriately to render sorted yaml dependent upon whichever way is supported for this version of Puppet/Ruby’s yaml implementation. rubocop:disable Metrics/AbcSize rubocop:disable Metrics/PerceivedComplexity



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
 
# File 'lib/puppet_x/elastic/hash.rb', line 12

def self.extended(base)
  if RUBY_VERSION >= '1.9'
    # We can sort the hash in Ruby >= 1.9 by recursively
    # re-inserting key/values in sorted order. Native to_yaml will
    # call .each and get sorted pairs back.
    tmp = base.to_a.sort
    base.clear
    tmp.each do |key, val|
      if val.is_a? base.class
        val.extend Puppet_X::Elastic::SortedHash
      elsif val.is_a? Array
        val.map do |elem|
          if elem.is_a? base.class
            elem.extend(Puppet_X::Elastic::SortedHash)
          else
            elem
          end
        end
      end
      base[key] = val
    end
  else
    # Otherwise, recurse into the hash to extend all nested
    # hashes with the sorted each_pair method.
    #
    # Ruby < 1.9 doesn't support any notion of sorted hashes,
    # so we have to expressly monkey patch each_pair, which is
    # called by ZAML (the yaml library used in Puppet < 4; Puppet
    # >= 4 deprecates Ruby 1.8)
    #
    # Note that respond_to? is used here as there were weird
    # problems with .class/.is_a?
    base.merge! base do |_, ov, _|
      if ov.respond_to? :each_pair
        ov.extend Puppet_X::Elastic::SortedHash
      elsif ov.is_a? Array
        ov.map do |elem|
          if elem.respond_to? :each_pair
            elem.extend Puppet_X::Elastic::SortedHash
          else
            elem
          end
        end
      else
        ov
      end
    end
  end
end

Instance Method Details

#each_pair ⇒ Object

Override each_pair with a method that yields key/values in sorted order.



64
65
66
67
68
 
# File 'lib/puppet_x/elastic/hash.rb', line 64

def each_pair
  keys.sort.each do |key|
    yield key, self[key]
  end
end