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# Author:: Steven Danna (<steve@chef.io>)
# Copyright:: Copyright 2015-2016, 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/version"
class Chef
class Knife
class SubcommandLoader
#
# Load a subcommand from a pre-computed path
# for the given command.
#
class HashedCommandLoader < Chef::Knife::SubcommandLoader
KEY = "_autogenerated_command_paths".freeze
attr_accessor :manifest
def initialize(chef_config_dir, plugin_manifest)
super(chef_config_dir)
@manifest = plugin_manifest
end
def guess_category(args)
category_words = positional_arguments(args)
category_words.map! { |w| w.split("-") }.flatten!
find_longest_key(manifest[KEY]["plugins_by_category"], category_words, " ")
end
def list_commands(pref_category = nil)
if pref_category || manifest[KEY]["plugins_by_category"].key?(pref_category)
commands = { pref_category => manifest[KEY]["plugins_by_category"][pref_category] }
else
commands = manifest[KEY]["plugins_by_category"]
end
# If any of the specified plugins in the manifest dont have a valid path we will
# eventually get an error and the user will need to rehash - instead, lets just
# print out 1 error here telling them to rehash
errors = {}
commands.collect { |k, v| v }.flatten.each do |command|
paths = manifest[KEY]["plugins_paths"][command]
if paths && paths.is_a?(Array)
# It is only an error if all the paths don't exist
if paths.all? { |sc| !File.exists?(sc) }
errors[command] = paths
end
end
end
if errors.empty?
commands
else
Chef::Log.error "There are files specified in the manifest that are missing. Please rehash to update the subcommands cache. If you see this error after rehashing delete the cache at #{Chef::Knife::SubcommandLoader.plugin_manifest_path}"
Chef::Log.error "Missing files:\n\t#{errors.values.flatten.join("\n\t")}"
{}
end
end
def subcommand_files
manifest[KEY]["plugins_paths"].values.flatten
end
def load_command(args)
paths = manifest[KEY]["plugins_paths"][subcommand_for_args(args)]
if paths.nil? || paths.empty? || (! paths.is_a? Array)
false
else
paths.each do |sc|
if File.exists?(sc)
Kernel.load sc
else
return false
end
end
true
end
end
def subcommand_for_args(args)
if manifest[KEY]["plugins_paths"].key?(args)
args
else
find_longest_key(manifest[KEY]["plugins_paths"], args, "_")
end
end
end
end
end
end
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