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# Author:: Steven Danna (<steve@chef.io>)
# Copyright:: Copyright (c) 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_relative "../../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 don't 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 plugin files specified in the knife cache that cannot be found. Please run knife 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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