Class: PackerTemplate

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

Overview

instance of a single packer template with methods to validate and extract data

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(path) ⇒ PackerTemplate 



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# File 'lib/template.rb', line 25

def initialize(path)
  @path = File.expand_path(path)
  @name = File.basename(@path, '.json')
  @file = File.read(path)
end

Instance Attribute Details

#name ⇒ Object

Returns the value of attribute name.



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# File 'lib/template.rb', line 23

def name
  @name
end

#path ⇒ Object

Returns the value of attribute path.



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# File 'lib/template.rb', line 23

def path
  @path
end

Instance Method Details

#builders ⇒ Object 



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# File 'lib/template.rb', line 35

def builders
  json['builders'].map { |b| b['name'] }
end

#builders_hash ⇒ Object 



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# File 'lib/template.rb', line 39

def builders_hash
  builders = {}
  json['builders'].each do |builder|
    builders[builder['name']] = builder['type']
  end
  builders
end

#json ⇒ Object 



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# File 'lib/template.rb', line 31

def json
  @parsed || @parsed = JSON.parse(@file)
end

#validates? ⇒ Boolean

shell out to packer to validate the config files for correctness



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# File 'lib/template.rb', line 48

def validates?
  Dir.chdir(File.dirname(@path))
  `packer validate #{@path} 2>&1`
  $CHILD_STATUS.success? ? true : false
end