Class: Bosh::Director::Changeset

Inherits:
Object
  • Object
show all
Defined in:
lib/bosh/director/manifest/changeset.rb

Constant Summary collapse

KEY_NAME = 
'name'
REDACT_KEY_NAMES = 
%w(
  properties
  bosh
)

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(before, after, redacted_before = nil, redacted_after = nil) ⇒ Changeset

Returns a new instance of Changeset.



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# File 'lib/bosh/director/manifest/changeset.rb', line 10

def initialize(before, after, redacted_before = nil, redacted_after = nil)
  @redacted_before = redacted_before.nil? ? Changeset.redact_properties!(Bosh::Common::DeepCopy.copy(before)) : redacted_before
  @redacted_after = redacted_after.nil? ? Changeset.redact_properties!(Bosh::Common::DeepCopy.copy(after)) : redacted_after

  @before = before
  @after = after

  if @before && @after
    @merged = deep_merge(@before, @after)
  elsif @before
    @merged = @before
  else
    @merged = @after
  end
end

Class Method Details

.redact_properties!(obj, redact_key_is_ancestor = false) ⇒ Object

redacts properties from ruby object to avoid having to use a regex to redact properties from diff output please do not use regexes for diffing/redacting



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# File 'lib/bosh/director/manifest/changeset.rb', line 28

def self.redact_properties!(obj, redact_key_is_ancestor = false)
  if redact_key_is_ancestor
    if obj.respond_to?(:key?)
      obj.keys.each{ |key|
        if obj[key].respond_to?(:each)
          redact_properties!(obj[key], true)
        else
          obj[key] = '<redacted>'
        end
      }
    elsif obj.respond_to?(:each_index)
      obj.each_index { |i|
        if obj[i].respond_to?(:each)
          redact_properties!(obj[i], true)
        else
          obj[i] = '<redacted>'
        end
      }
    end
  else
    if obj.respond_to?(:each)
      obj.each{ |a|
        if obj.respond_to?(:key?) && REDACT_KEY_NAMES.any? { |key| key == a.first } && a.last.respond_to?(:key?)
          redact_properties!(a.last, true)
        else
          redact_properties!(a.respond_to?(:last) ? a.last : a)
        end

      }
    end
  end

  obj
end

Instance Method Details

#diff(redact = true, indent = 0) ⇒ Object 



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# File 'lib/bosh/director/manifest/changeset.rb', line 63

def diff(redact=true, indent = 0)
  lines = DiffLines.new

  if redact
    output_values_before = @redacted_before
    output_values_after = @redacted_after
  else
    output_values_before = @before
    output_values_after = @after
  end

  @merged.each_pair do |key, value|
    if @before[key] != @after[key]
      if @before.nil? || @before[key].nil?
        lines.concat(yaml_lines({key => output_values_after[key]}, indent, 'added'))

      elsif @after.nil? || @after[key].nil?
        lines.concat(yaml_lines({key => output_values_before[key]}, indent, 'removed'))

      elsif @before[key].is_a?(Array) && @after[key].is_a?(Array)
        lines.concat(compare_arrays(@before[key], @after[key], output_values_before[key], output_values_after[key], key, redact, indent))

      elsif @before[key].is_a?(Hash) && @after[key].is_a?(Hash)
        changeset = Changeset.new(@before[key], @after[key], output_values_before[key], output_values_after[key])
        diff_lines = changeset.diff(redact, indent+1)
        unless diff_lines.empty?
          lines << Line.new(indent, "#{key}:", nil)
          lines.concat(diff_lines)
        end

      else
        lines.concat(yaml_lines({key => output_values_before[key]}, indent, 'removed'))
        lines.concat(yaml_lines({key => output_values_after[key]}, indent, 'added'))
      end
    end
  end
  lines
end