Module: Coral::Mixin::Lookup

Included in:
Config
Defined in:
lib/coral_core/mixin/lookup.rb

Constant Summary collapse

@@hiera =

Hiera configuration

nil

Instance Method Summary collapse

Instance Method Details

#hiera ⇒ Object 



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# File 'lib/coral_core/mixin/lookup.rb', line 33

def hiera
  @@hiera = Hiera.new(:config => hiera_config) unless @@hiera
  return @@hiera
end

#hiera_config ⇒ Object 



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# File 'lib/coral_core/mixin/lookup.rb', line 17

def hiera_config
  config_file = Puppet.settings[:hiera_config]
  config      = {}

  if File.exist?(config_file)
    config = Hiera::Config.load(config_file)
  else
    ui.warn("Config file #{config_file} not found, using Hiera defaults")
  end

  config[:logger] = 'puppet'
  return config
end

#initialized?(options = {}) ⇒ Boolean

Configuration lookup interface

Returns:

  • (Boolean) 


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# File 'lib/coral_core/mixin/lookup.rb', line 41

def initialized?(options = {})
  config   = Config.ensure(options)
  
  begin
    require 'hiera'
    puppet_scope = config.get(:puppet_scope, scope)
  
    prefix_text = config.get(:prefix_text, '::')  
    init_fact   = prefix_text + config.get(:init_fact, 'hiera_ready')
    
    if Puppet::Parser::Functions.function('hiera') && puppet_scope.respond_to?('[]')
      return true if Util::Data.true?(puppet_scope[init_fact])
    end
    return false
  
  rescue Exception # Prevent abortions.
  end    
  return false
end

#lookup(properties, default = nil, options = {}) ⇒ Object 



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# File 'lib/coral_core/mixin/lookup.rb', line 63

def lookup(properties, default = nil, options = {})
  config          = Config.ensure(options)
  value           = nil
  
  hiera_scope     = config.get(:hiera_scope, {})
  context         = config.get(:context, :priority)    
  override        = config.get(:override, nil)
  
  puppet_scope    = config.get(:puppet_scope, scope)
  
  base_names      = config.get(:search, nil)
   
  search_name     = config.get(:search_name, true)
  reverse_lookup  = config.get(:reverse_lookup, true)
  
  return_property = config.get(:return_property, false)
  
  unless properties.is_a?(Array)
    properties = [ properties ].flatten
  end

  first_property = nil
  properties.each do |property|
    first_property = property unless first_property
        
    if initialized?(config)
      unless hiera_scope.respond_to?('[]')
        hiera_scope = Hiera::Scope.new(hiera_scope)
      end
      value = hiera.lookup(property, nil, hiera_scope, override, context)
    end 
  
    if Util::Data.undef?(value)    
      log_level = Puppet::Util::Log.level
      Puppet::Util::Log.level = :err # Don't want failed parameter lookup warnings here.
    
      if base_names
        if base_names.is_a?(String)
          base_names = [ base_names ]
        end
        base_names = base_names.reverse if reverse_lookup
      
        base_names.each do |base|
          value = puppet_scope.lookupvar("::#{base}::#{property}")
          break unless Util::Data.undef?(value)  
        end
      end
      if Util::Data.undef?(value) && search_name
        value = puppet_scope.lookupvar("::#{property}")
      end
      Puppet::Util::Log.level = log_level
    end
  end
  value = default if Util::Data.undef?(value)
  value = Util::Data.value(value)
  
  if ! @@properties.has_key?(first_property) || ! Util::Data.undef?(value)
    Config::Collection.set(first_property, value)
  end
  return value, first_property if return_property
  return value
end

#lookup_array(properties, default = [], options = {}) ⇒ Object 



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# File 'lib/coral_core/mixin/lookup.rb', line 128

def lookup_array(properties, default = [], options = {})
  config          = Config.ensure(options) 
  value, property = lookup(properties, nil, config.import({ :return_property => true }))
  
  if Util::Data.undef?(value)
    value = default
      
  elsif ! Util::Data.empty?(default)
    if config.get(:merge, false)
      value = Util::Data.merge([default, value], config)
    end
  end
  
  unless value.is_a?(Array)
    value = ( Util::Data.empty?(value) ? [] : [ value ] )
  end
  
  Config::Collection.set(property, value)
  return value
end

#lookup_hash(properties, default = {}, options = {}) ⇒ Object 



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# File 'lib/coral_core/mixin/lookup.rb', line 151

def lookup_hash(properties, default = {}, options = {})
  config          = Config.ensure(options) 
  value, property = lookup(properties, nil, config.import({ :return_property => true }))
  
  if Util::Data.undef?(value)
    value = default
      
  elsif ! Util::Data.empty?(default)
    if config.get(:merge, false)
      value = Util::Data.merge([default, value], config)
    end
  end
  
  unless value.is_a?(Hash)
    value = ( Util::Data.empty?(value) ? {} : { :value => value } )
  end
  
  Config::Collection.set(property, value)
  return value
end

#normalize(data, override = nil, options = {}) ⇒ Object 



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# File 'lib/coral_core/mixin/lookup.rb', line 174

def normalize(data, override = nil, options = {})
  config  = Config.ensure(options)
  results = {}
  
  unless Util::Data.undef?(override)
    case data
    when String, Symbol
      data = [ data, override ] if data != override
    when Array
      data << override unless data.include?(override)
    when Hash
      data = [ data, override ]
    end
  end
  
  case data
  when String, Symbol
    results = lookup(data.to_s, {}, config)
    
  when Array
    data.each do |item|
      if item.is_a?(String) || item.is_a?(Symbol)
        item = lookup(item.to_s, {}, config)
      end
      unless Util::Data.undef?(item)
        results = Util::Data.merge([ results, item ], config)
      end
    end

  when Hash
    results = data
  end
  
  return results
end