Class: CfnFlow::CachedStack

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

Defined Under Namespace

Classes: MissingOutput

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(stack_name) ⇒ CachedStack

Returns a new instance of CachedStack.



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# File 'lib/cfn_flow/cached_stack.rb', line 16

def initialize(stack_name)
  @stack_name = stack_name
end

Instance Attribute Details

#stack_name ⇒ Object (readonly)

Returns the value of attribute stack_name.



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# File 'lib/cfn_flow/cached_stack.rb', line 14

def stack_name
  @stack_name
end

Class Method Details

.get_output(stack:, output:) ⇒ Object 



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# File 'lib/cfn_flow/cached_stack.rb', line 10

def self.get_output(stack:, output:)
  new(stack).output(output)
end

.stack_cache ⇒ Object 



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# File 'lib/cfn_flow/cached_stack.rb', line 6

def self.stack_cache
  @stack_cache ||= {}
end

Instance Method Details

#output(name) ⇒ Object 



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# File 'lib/cfn_flow/cached_stack.rb', line 20

def output(name)
  output = stack_cache.outputs.detect{|out| out.output_key == name }
  unless output
    raise MissingOutput.new("Can't find outpout #{name} for stack #{stack_name}")
  end
  output.output_value
end

#stack_cache ⇒ Object 



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# File 'lib/cfn_flow/cached_stack.rb', line 28

def stack_cache
  self.class.stack_cache[stack_name] ||= CfnFlow.cfn_resource.stack(stack_name).load
end