Module: Kubes::Compiler::Dsl::Core::Fields

Included in:
Base, Shared::Helpers, Strategy::Erb
Defined in:
lib/kubes/compiler/dsl/core/fields.rb

Instance Method Summary collapse

Instance Method Details

#field(name) ⇒ Object

Defines field methods. Example:

field :spec

Results in:

def spec(value=nil)
  value.nil? ? spec_reader : spec_writer(value)
end

def spec_reader
  default = default_spec if respond_to?(:default_spec)
  @spec || default
end

def spec_writer(value)
  case type # captured by closure. IE: labels:hash => type = hash
  when 'hash'
    spec_writer_hash(value)
  else
    @spec = value
  end
end

def spec_writer_hash(value)
  mode = value.delete(:_mode)
  @spec = {} if mode == "reset"
  @spec ||= {}
  @spec.deeper_merge!(value)
end



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# File 'lib/kubes/compiler/dsl/core/fields.rb', line 34

def field(name)
  name, type = name.to_s.split(':')
  type ||= 'string'

  reader = "#{name}_reader"
  writer = "#{name}_writer"
  ivar = "@#{name}"
  writer_hash = "#{name}_writer_hash"

  define_method(name) do |value=nil|
    value.nil? ? send(reader) : send(writer, value)
  end

  define_method(reader) do
    default_meth = "default_#{name}" # IE: default_spec, default_apiVersion etc
    default = send(default_meth) if respond_to?(default_meth.to_sym)
    instance_variable_get(ivar) || default
  end

  define_method(writer) do |value|
    case type
    when 'hash'
      send(writer_hash, value)
    else # string, object, etc
      instance_variable_set(ivar, value)
    end
  end

  define_method(writer_hash) do |value|
    mode = value.delete(:_mode) # special treatment
    result = instance_variable_get(ivar)
    result = {} if mode == "reset" # allow user to override with mode: reset option
    result ||= {} # maintain value for layering
    Kubes.deep_merge!(result, value)
    instance_variable_set(ivar, result)
  end
end

#fields(*names) ⇒ Object 



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# File 'lib/kubes/compiler/dsl/core/fields.rb', line 72

def fields(*names)
  names.each do |name|
    field(name)
  end
end