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#
# Author:: Daniel DeLeo (<dan@opscode.com>)
# Author:: Jordan Running (<jr@chef.io>)
# Copyright:: Copyright (c) 2011-2016 Chef Software, Inc.
# License:: Apache License, Version 2.0
#
# 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.
#
require 'chef/json_compat'
require 'chef/node'
class Chef
class Knife
class NodeEditor
attr_reader :node, :ui, :config
private :node, :ui, :config
# @param node [Chef::Node]
# @param ui [Chef::Knife::UI]
# @param config [Hash]
def initialize(node, ui, config)
@node, @ui, @config = node, ui, config
end
# Opens the node data (as JSON) in the user's editor and returns a new
# {Chef::Node} reflecting the user's changes.
#
# @return [Chef::Node]
def edit_node
abort "You specified the --disable_editing option, nothing to edit" if config[:disable_editing]
assert_editor_set!
updated_node_data = ui.edit_data(view)
apply_updates(updated_node_data)
@updated_node
end
# Returns an array of the names of properties that have been changed or
# +false+ if none were changed.
#
# @return [Array<String>] if any properties have been changed.
# @return [false] if no properties have been changed.
def updated?
return false if @updated_node.nil?
pristine_copy = Chef::JSONCompat.parse(Chef::JSONCompat.to_json(node))
updated_copy = Chef::JSONCompat.parse(Chef::JSONCompat.to_json(@updated_node))
updated_properties = %w[
name
chef_environment
automatic
default
normal
override
policy_name
policy_group
run_list
].reject do |key|
pristine_copy[key] == updated_copy[key]
end
updated_properties.any? && updated_properties
end
# @api private
def view
result = {
"name" => node.name,
"chef_environment" => node.chef_environment,
"normal" => node.normal_attrs,
"policy_name" => node.policy_name,
"policy_group" => node.policy_group,
"run_list" => node.run_list,
}
if config[:all_attributes]
result["default"] = node.default_attrs
result["override"] = node.override_attrs
result["automatic"] = node.automatic_attrs
end
result
end
# @api private
def apply_updates(updated_data)
if node.name and node.name != updated_data["name"]
ui.warn "Changing the name of a node results in a new node being created, #{node.name} will not be modified or removed."
ui.confirm "Proceed with creation of new node"
end
data = updated_data.dup
unless config[:all_attributes]
data['automatic'] = node.automatic_attrs
data['default'] = node.default_attrs
data['override'] = node.override_attrs
end
@updated_node = Node.from_hash(data)
end
private
def abort(message)
ui.error(message)
exit 1
end
def assert_editor_set!
unless config[:editor]
abort "You must set your EDITOR environment variable or configure your editor via knife.rb"
end
end
end
end
end
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