Class: PuppetBox::NodeSet

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

Constant Summary collapse

NODESET_FILE = 
"spec/acceptance/nodesets/puppetbox.yaml"
VERSION_KEY = 
"puppetbox_nodeset"
UNDERSTANDS_VERSION = 
[1]
REQUIRED_KEYS = 
["config", "driver"]
NODE_ELEMENT = 
"nodes"

Instance Method Summary collapse

Constructor Details

#initialize(nodeset_file = nil) ⇒ NodeSet

Returns a new instance of NodeSet.



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# File 'lib/puppetbox/nodeset.rb', line 11

def initialize(nodeset_file=nil)
  @nodeset_file = nodeset_file || NODESET_FILE

  # parse the yaml file and simplify to human readable errors
  begin
    @nodeset = YAML.load(IO.read(@nodeset_file))
  rescue Errno::ENOENT
    raise "File not found: #{@nodeset_file}"
  rescue Psych::SyntaxError
    raise "Syntax error reading #{@nodeset_file}"
  end
  if @nodeset.has_key?(VERSION_KEY)
    if UNDERSTANDS_VERSION.include?(@nodeset[VERSION_KEY])
      if @nodeset.has_key?(NODE_ELEMENT)
        hosts = @nodeset[NODE_ELEMENT]
        hosts.each { |node_name, data|
          # check each node has required keys
          REQUIRED_KEYS.each { |required_key|
            if ! data.has_key?(required_key)
              raise "Nodeset file #{@nodeset_file} missing required key #{required_key} for node #{node_name}"
            end
          }
        }
      else
        raise "Nodeset file #{@nodeset_file} missing root element `nodes`"
      end
    else
      raise "Nodeset file format is #{@nodeset[VERSION_KEY]} but PuppetBox only supports versions #{UNDERSTANDS_VERSION}"
    end
  else
    raise "Nodeset file #{@nodeset_file} does not contain #{VERSION_KEY} - check syntax"
  end

end

Instance Method Details

#get_node(node_name) ⇒ Object 



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# File 'lib/puppetbox/nodeset.rb', line 50

def get_node(node_name)
  if has_node?(node_name)
    @nodeset[NODE_ELEMENT][node_name]
  else
    raise "Node #{node_name} is not defined in nodset file: #{@nodeset_file}"
  end
end

#has_node?(node_name) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/puppetbox/nodeset.rb', line 46

def has_node?(node_name)
  @nodeset[NODE_ELEMENT].has_key?(node_name)
end