class StackMaster::StackDiffer
Public Class Methods
new(proposed_stack, current_stack)
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# File lib/stack_master/stack_differ.rb, line 6 def initialize(proposed_stack, current_stack) @proposed_stack = proposed_stack @current_stack = current_stack end
Public Instance Methods
body_diff()
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# File lib/stack_master/stack_differ.rb, line 45 def body_diff @body_diff ||= Diff.new(name: 'Stack', before: current_template, after: proposed_template, context: 7) end
body_different?()
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# File lib/stack_master/stack_differ.rb, line 41 def body_different? body_diff.different? end
current_parameters()
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# File lib/stack_master/stack_differ.rb, line 22 def current_parameters if @current_stack YAML.dump(sort_params(@current_stack.parameters_with_defaults)) else '' end end
current_template()
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# File lib/stack_master/stack_differ.rb, line 16 def current_template return '' unless @current_stack return @current_stack.template_body unless @current_stack.template_format == :json JSON.pretty_generate(TemplateUtils.template_hash(@current_stack.template_body)) + "\n" end
noecho_keys()
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# File lib/stack_master/stack_differ.rb, line 72 def noecho_keys if @current_stack @current_stack.parameters_with_defaults.select do |key, value| value == "****" end.keys else [] end end
output_diff()
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# File lib/stack_master/stack_differ.rb, line 62 def output_diff body_diff.display parameters_diff.display unless noecho_keys.empty? StackMaster.stdout.puts " * can not tell if NoEcho parameters are different." end StackMaster.stdout.puts "No stack found" if @current_stack.nil? end
parameters_diff()
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# File lib/stack_master/stack_differ.rb, line 56 def parameters_diff @param_diff ||= Diff.new(name: 'Parameters', before: current_parameters, after: proposed_parameters) end
params_different?()
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# File lib/stack_master/stack_differ.rb, line 52 def params_different? parameters_diff.different? end
proposed_parameters()
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# File lib/stack_master/stack_differ.rb, line 30 def proposed_parameters # **** out any secret parameters in the current stack. params = @proposed_stack.parameters_with_defaults if @current_stack noecho_keys.each do |key| params[key] = "****" end end YAML.dump(sort_params(params)) end
proposed_template()
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# File lib/stack_master/stack_differ.rb, line 11 def proposed_template return @proposed_stack.template_body unless @proposed_stack.template_format == :json JSON.pretty_generate(JSON.parse(@proposed_stack.template_body)) + "\n" end
single_param_update?(param_name)
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# File lib/stack_master/stack_differ.rb, line 82 def single_param_update?(param_name) return false if param_name.blank? || @current_stack.blank? || body_different? differences = Hashdiff.diff(@current_stack.parameters_with_defaults, @proposed_stack.parameters_with_defaults) return false if differences.count != 1 diff = differences[0] diff[0] == "~" && diff[1] == param_name end
Private Instance Methods
sort_params(hash)
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# File lib/stack_master/stack_differ.rb, line 92 def sort_params(hash) hash.sort.to_h end