Contents

#
# Author: Seth Vargo <[e-mail]>
#
# Copyright 2014 Chef Software, Inc.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
#

module Falcore
  class Dumper::Base
    class << self
      def run(&block)
        block ? @run = block : @run || Proc.new
      end

      def validate(&block)
        block ? @validate = block : @validate || Proc.new
      end
    end

    # @return [Falcore::Config]
    attr_reader :config

    # @return [Falcore::Node::Master]
    attr_reader :master

    #
    # @param [Config] config
    #   the config object
    # @param [Node::Master] master
    #   the master node
    #
    def initialize(config, master)
      unless config.is_a?(Config)
        raise ArgumentError, "#{config.class} is not an Falcore::Config"
      end

      unless master.is_a?(Node::Master)
        raise ArgumenError, "#{config.class} is not an Falcore::Node::Master"
      end

      @config = config
      @master = master
    end

    #
    # Run this dumper. This method should be overridden in subclasses.
    #
    def run
      instance_eval(&self.class.validate)
      instance_eval(&self.class.run)
    end

    private

    #
    # Ensure the thing called in the block is not +nil+.
    #
    # @param [String] thing
    #   the thing to check (used for the error message)
    # @param [Proc] block
    #   the block to call
    #
    # @return [true]
    #
    def presence!(thing, &block)
      if block.call(self).nil?
        raise "Expected '#{thing}' to be set!"
      end

      true
    end
  end
end

Version data entries

3 entries across 3 versions & 1 rubygems

Version	Path
falcore-0.2.0	lib/falcore/dumpers/base.rb
falcore-0.1.1	lib/falcore/dumpers/base.rb
falcore-0.1.0	lib/falcore/dumpers/base.rb