Class: KnifeNodeAttribute::NodeAttributeDelete

Inherits:
Chef::Knife
  • Object
show all
Includes:
Helpers
Defined in:
lib/chef/knife/knife-node-attribute.rb

Instance Method Summary collapse

Methods included from Helpers

#get_all_attributes, #get_default_attributes, #get_node, #get_normal_attributes, #get_override_attributes

Instance Method Details

#parse_args ⇒ Object 



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# File 'lib/chef/knife/knife-node-attribute.rb', line 105

def parse_args
  unless node_name = name_args[0]
    show_usage
    ui.error "You need to specify a node"
    exit 1
  end
  if name_args[1].nil?
    show_usage
    ui.error "No attribute level given. (e.g. override, normal, default)"
    exit 1
  else
    attribute_class = name_args[1].downcase.to_sym
    # if we passed a valid attribute class, the next one could be an
    # attribute name. If it's invalid, it might be the attribute name
    unless ATTRIBUTE_CLASSES.include? attribute_class
      show_usage
      ui.error "Wrong attribute level given. (e.g. override, normal, default)"
      exit 1
    end
  end

  unless attribute_name = name_args[2]
    show_usage
    ui.error "No attribute name given."
    exit 1
  end

  {:nodename => node_name,
   :class => attribute_class,
   :name => attribute_name.split(":")}
end

#run ⇒ Object 



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# File 'lib/chef/knife/knife-node-attribute.rb', line 137

def run
  args = parse_args
  method = "#{args[:class]}_attrs".to_sym

  node = get_node(args[:nodename])
  # this eval business is awful, I should probably come up with something
  # smarter
  if args[:name].length == 1
    delete_method =  "node.#{method}.delete('#{args[:name].last}')"
  else
    parent_hash = args[:name][0, args[:name].length - 1]
    delete_method =  "node.#{method}['#{parent_hash.join("']['")}'].delete('#{args[:name].last}')"
  end
  begin
    eval delete_method
    node.save
    msg = parent_hash.nil? ? "" : " from parent structure #{parent_hash.join(':')}"
    puts "Key #{args[:name].last}#{msg} deleted."
  rescue StandardError => e
    ui.error "An error occured while trying to delete the node key:"
    puts e.to_s
  end
end