Module: KnifeWip::Helpers

Included in:
NodeUnwip, NodeWip, Plugin
Defined in:
lib/chef/knife/knife-wip.rb

Overview

Public: collection namespace for some helper functions and methods

Instance Method Summary collapse

Instance Method Details

#app_config ⇒ Object

Public: get the configuration loaded from the yaml files

Returns the appconf object with config loaded



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# File 'lib/chef/knife/knife-wip.rb', line 37

def app_config
  return @app_config unless @app_config.nil?

  @app_config = ::AppConf.new
  load_paths = []
  # first look for configuration in the cookbooks folder
  load_paths << File.expand_path("#{cookbook_path.gsub('cookbooks','')}/config/knife-wip-config.yml")
  # or see if we are in the cookbooks repo
  load_paths << File.expand_path('config/knife-wip-config.yml')
  # global config in /etc has higher priority
  load_paths << '/etc/knife-wip-config.yml'
  # finally the user supplied config file is loaded
  load_paths << File.expand_path('~/.chef/knife-wip-config.yml')

  # load all the paths
  load_paths.each do |load_path|
    if File.exists?(load_path)
      @app_config.load(load_path)
    end
  end

  @app_config
end

#cookbook_path ⇒ Object 



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# File 'lib/chef/knife/knife-wip.rb', line 69

def cookbook_path
  ensure_cookbook_path!
  [config[:cookbook_path] ||= ::Chef::Config.cookbook_path].flatten[0]
end

#ensure_cookbook_path! ⇒ Object 



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# File 'lib/chef/knife/knife-wip.rb', line 61

def ensure_cookbook_path!
  if config[:cookbook_path].nil?
    ui.fatal "No default cookbook_path; Specify with -o or fix your knife.rb."
    show_usage
    exit(1)
  end
end

#load_plugins ⇒ Object

Public: load all plugins that are configured

this method merely tries to require the plugin files, instantiates an object from them and then stores it in @plugins. That way the knife commands can just call all plugins however they want from there.

Returns nothing



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# File 'lib/chef/knife/knife-wip.rb', line 17

def load_plugins

  @plugins ||= []

  app_config[:plugins].to_hash.each do |plugin, plugin_config|
    begin
      require "knife-wip/plugins/#{plugin.downcase}"
      # apparently this is the way to dynamically instantiate ruby objects
      @plugins << KnifeWip::Plugins.const_get(plugin.capitalize).new(plugin_config)
    rescue LoadError
      ui.warn "Configured plugin '#{plugin}' doesn't exist."
    end

  end

end