Class: CfndslConverger

Inherits:
Object
  • Object
show all
Defined in:
lib/cfndsl_converger.rb

Instance Method Summary collapse

Instance Method Details

#chain_converge(cfndsl_stacks:, input_bindings: nil) ⇒ Object 



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# File 'lib/cfndsl_converger.rb', line 8

def chain_converge(cfndsl_stacks:,
                   input_bindings: nil)

  previous_output_bindings = input_bindings
  cfndsl_stacks.each do |cfndsl_stack|
    previous_output_bindings = converge stack_name: cfndsl_stack[:stack_name],
                                        path_to_stack: cfndsl_stack[:path_to_stack],
                                        bindings: previous_output_bindings.merge(input_bindings)
  end
  previous_output_bindings
end

#cleanup(cloudformation_stack_name) ⇒ Object

Delete the specified Cloudformation stack by name



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# File 'lib/cfndsl_converger.rb', line 57

def cleanup(cloudformation_stack_name)
  resource = Aws::CloudFormation::Resource.new
  stack_to_delete = resource.stack(cloudformation_stack_name)

  stack_to_delete.delete
  begin
    stack_to_delete.wait_until(max_attempts:100, delay:15) do |stack|
      stack.stack_status.match /DELETE_COMPLETE/
    end
  rescue
    #squash any errors - when stack is gone, the waiter might freak
  end
end

#converge(stack_name:, path_to_stack:, bindings: nil, fail_on_changes_to_immutable_resource: false) ⇒ Object 



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# File 'lib/cfndsl_converger.rb', line 20

def converge(stack_name:,
             path_to_stack:,
             bindings: nil,
             fail_on_changes_to_immutable_resource: false)
  extras = []
  unless bindings.nil?
    temp_file = Tempfile.new(['cfnstackfortesting', '.yml'])
    temp_file.write bindings.to_yaml
    temp_file.close

    extras << [:yaml,File.expand_path(temp_file)]
  end

  verbose = false
  model = CfnDsl::eval_file_with_extras(File.expand_path(path_to_stack),
                                        extras,
                                        verbose)

  if fail_on_changes_to_immutable_resource and stack_exists?(stack_name)
    unsafe_logical_resource_id = ChangesetUtil.new.immutable_resources_that_would_change stack_name: stack_name,
                                                                                         template_body: model.to_json
    if unsafe_logical_resource_id.nil?
      outputs = converge_stack stack_name: stack_name,
                               stack_body: model.to_json
    else
      raise "update would modify or delete immutable resource #{unsafe_logical_resource_id}"
    end
  else
    outputs = converge_stack stack_name: stack_name,
                             stack_body: model.to_json
  end
  outputs
end