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#
# Author:: Daniel DeLeo (<dan@chef.io>)
# Copyright:: Copyright 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 "ffi_yajl" unless defined?(FFI_Yajl)
require_relative "../../util/path_helper"
require_relative "../../data_bag_item"
class Chef
class Knife
module Core
class ObjectLoader
attr_reader :ui
attr_reader :klass
class ObjectType
FILE = 1
FOLDER = 2
end
def initialize(klass, ui)
@klass = klass
@ui = ui
end
def load_from(repo_location, *components)
unless object_file = find_file(repo_location, *components)
ui.error "Could not find or open file '#{components.last}' in current directory or in '#{repo_location}/#{components.join('/')}'"
exit 1
end
object_from_file(object_file)
end
# When someone makes this awesome, please update the above error message.
def find_file(repo_location, *components)
if file_exists_and_is_readable?(File.expand_path( components.last ))
File.expand_path( components.last )
else
relative_path = File.join(Dir.pwd, repo_location, *components)
if file_exists_and_is_readable?(relative_path)
relative_path
else
nil
end
end
end
# Find all objects in the given location
# If the object type is File it will look for all *.{json,rb}
# files, otherwise it will lookup for folders only (useful for
# data_bags)
#
# @param [String] path - base look up location
#
# @return [Array<String>] basenames of the found objects
#
# @api public
def find_all_objects(path)
path = File.join(Chef::Util::PathHelper.escape_glob_dir(File.expand_path(path)), "*")
path << ".{json,rb}"
objects = Dir.glob(path)
objects.map { |o| File.basename(o) }
end
def find_all_object_dirs(path)
path = File.join(Chef::Util::PathHelper.escape_glob_dir(File.expand_path(path)), "*")
objects = Dir.glob(path)
objects.delete_if { |o| !File.directory?(o) }
objects.map { |o| File.basename(o) }
end
def object_from_file(filename)
case filename
when /\.(js|json)$/
r = FFI_Yajl::Parser.parse(IO.read(filename))
# Chef::DataBagItem doesn't work well with the json_create method
if @klass == Chef::DataBagItem
r
else
@klass.from_hash(r)
end
when /\.rb$/
r = klass.new
r.from_file(filename)
r
else
ui.fatal("File must end in .js, .json, or .rb")
exit 30
end
end
def file_exists_and_is_readable?(file)
File.exist?(file) && File.readable?(file)
end
end
end
end
end
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