Class: Enviera::Subcommands::Lookup

Inherits:
Enviera::Subcommand show all
Defined in:
lib/enviera/subcommands/lookup.rb

Class Method Summary collapse

Methods inherited from Enviera::Subcommand

all_options, attach_option, find, hidden?, load_config_file, parse, prettyname

Class Method Details

.description ⇒ Object 



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# File 'lib/enviera/subcommands/lookup.rb', line 43

def self.description
  "lookup hiera data for environment"
end

.execute ⇒ Object 



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# File 'lib/enviera/subcommands/lookup.rb', line 64

def self.execute
  begin
    environment = JSON.parse(Enviera::Options[:input_data])
  rescue
    raise "Unable to parse input as valid JSON. Please ensure structure is proper."
  end
  keys_to_merge = Enviera::Options[:merged_keys].split(',')
  hiera_config = Hiera::Config.load(Enviera::Options[:hiera_config])
  hiera= Hiera.new(:config=>hiera_config)
  keys = {}
  hiera.config[:backends].each do |backend|
    Hiera::Backend.datasources(environment) { |source|
      # Presently I'm only handling 'yaml' extensions. I hope someday this works for other stuff
      # But I haven't figured out a smart way to do this with the tools available
      # And it's not urgent for me
      sourcefile = Hiera::Backend.datafile(backend,environment,source,"yaml") or next
      source = YAML.load_file(sourcefile)
      source.each_key do |key|
        if !keys.has_key?(key) then
          keys[key] = source[key]
        elsif keys_to_merge.include?(key) then
          keys[key] = (keys[key] + source[key]).uniq
        end
      end
    }
  end
  keys = Hash[ keys.sort{ |v0, v1| v0[0] <=> v1[0] } ]
  case Enviera::Options[:output]
  when "block"
    keys
  when "json"
    keys.to_json
  when "yaml"
    keys.to_yaml
  else
    keys.to_yaml
  end
end

.options ⇒ Object 



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# File 'lib/enviera/subcommands/lookup.rb', line 13

def self.options
  [{:name => :string,
    :description => "Source input is a json string provided as an argument",
    :short => 's',
    :type => :string},
   {:name => :file,
    :description => "Source input is a regular json file",
    :short => 'f',
    :type => :string},
   {:name => :stdin,
    :description => "Source input is taken from stdin (json string)",
    :short => :none},
   {:name => :hiera_config,
    :description => "Path to your hiera config yaml file",
    :short => 'c',
    :type => :string,
    :default => '/etc/puppet/hiera.yaml'},
   {:name => :merged_keys,
    :description => "Keys that should be merged (i.e. hiera_include style) separated by commas",
    :short => 'm',
    :type => :string,
    :default => ''},
   {:name => :output,
    :description => "What format to output in. [json|yaml|block]",
    :short => 'o',
    :type => :string,
    :default => 'yaml'}
  ]
end

.validate(options) ⇒ Object 



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# File 'lib/enviera/subcommands/lookup.rb', line 47

def self.validate options
  sources = [:string, :file, :stdin].collect {|x| x if options[x]}.compact
  Trollop::die "You must specify a source (I.E. -s '{}')" if sources.count.zero?
  Trollop::die "You can only specify one of (#{sources.join(', ')})" if sources.count > 1
  options[:source] = sources.first

  options[:input_data] = case options[:source]
  when :stdin
    STDIN.read
  when :string
    options[:string]
  when :file
    File.read options[:file]
  end
  options
end